\n
Plant materials and seed sterilization<\/h3>\n
The plant materials used on this research originated from seeds obtained from an experimental nursery. These nursery seeds had been initially sourced from wild populations naturally rising on a copper mine tailings storage facility situated at Planta Manuel Antonio Matta, Atacama Area, northern Chile (27.3\u00b0 S, 70.3\u00b0 W)12. No wild crops had been collected particularly for this research. All plant materials was obtained and utilized in accordance with related institutional, nationwide, and worldwide tips and laws. Seeds from the nursery inhabitants had been used because the beginning materials for all in vitro experiments.<\/p>\n
Seed floor sterilization was carried out following the protocol described by Acemi and \u00d6zen18, with modifications to sodium hypochlorite focus and publicity time. Seeds had been immersed in 70% (v\/v) ethanol for 1 min, adopted by 1% (w\/v) sodium hypochlorite supplemented with one drop of Tween\u2122 20 for 10 min. Subsequently, seeds had been rinsed 3 times with sterile distilled water below aseptic situations.<\/p>\n
Seed germination and early seedling development<\/h3>\n
Floor-sterilized seeds had been cultured on Murashige and Skoog (MS) basal medium19 supplemented with 1% (w\/v) sucrose, MS nutritional vitamins, and 0.43% (w\/v) Phytagel\u00ae (MS+10 S). Roughly 400\u2013500 mg of seeds had been sterilized per batch, and 4 organic replicates containing a median of 190 seeds per Petri dish had been established for the germination assay. Following sowing, plates had been incubated in darkness at 4 \u00b0C for twenty-four h and subsequently transferred to a development chamber maintained at 24 \u00b0C below a 16 h mild\/8 h darkish photoperiod with a lightweight depth of 136 \u00b5mol m\u207b\u00b2 s\u207b\u00b9. The pH of the medium was adjusted to five.75\u20135.8 previous to autoclaving.<\/p>\n
Germination dynamics had been evaluated following the strategy described by Noni-Morales et al.17. Cumulative germination share was recorded at 8, 11, and 15 days after sowing (DAS) and calculated because the variety of germinated seeds relative to the full variety of seeds sown per plate, expressed as a share.<\/p>\n
For early development assessments, germinated seedlings had been transferred to 1-L tradition jars containing recent MS+10\u00a0S medium. 5 seedlings had been cultured per jar, and development was monitored for 50 days. Three impartial organic replicates had been established. Seedling top was recorded on the finish of the analysis interval.<\/p>\n
Callus induction and regeneration effectivity<\/h3>\n
Coleoptile\u2013mesocotyl explants had been excised from 7\u201310-day-old seedlings after emergence of the primary leaf. Roughly 0.5\u00a0cm segments containing the coleoptile\u2013mesocotyl junction had been remoted, and roots had been eliminated previous to tradition.<\/p>\n
Explants had been cultured on callus induction medium (CIM) consisting of MS basal salts supplemented with 3% (w\/v) maltose, 2.5\u00a0mg L\u207b\u00b9 dicamba (11.3 \u00b5M), 0.10% (w\/v) casein hydrolysate, 0.069% (w\/v) L-proline, 0.025% (w\/v) myo-inositol, and 0.0001% (w\/v) thiamine-HCl. The medium was solidified with 0.43% (w\/v) Phytagel\u00ae, and the pH was adjusted to five.75\u20135.8 previous to autoclaving.<\/p>\n
Cultures had been incubated at 24\u00a0\u00b0C in full darkness. Early callus formation was assessed after roughly 12 days of tradition. Explants had been maintained on CIM for 3\u20135 weeks, with periodic subculture onto recent medium when required. Callus induction frequency was calculated as the proportion of explants producing callus relative to the full variety of cultured explants.<\/p>\n
Calli had been subsequently categorised in line with their morphology as embryogenic calli (EC) or non-embryogenic calli (NEC). Embryogenic calli had been recognized by their compact, nodular, and translucent look, whereas non-embryogenic calli exhibited irregular, gentle, and fewer organized morphologies.<\/p>\n
Regeneration of embryogenic calli<\/h3>\n
Embryogenic calli had been able to regenerating full plantlets below the tradition situations employed. The primary organogenic constructions, together with major shoots and roots, emerged immediately from embryogenic calli maintained on CIM supplemented with dicamba below darkness (Fig.\u00a04C). Following the initiation of organogenesis, cultures had been transferred to a 16\u00a0h mild\/8\u00a0h darkish photoperiod whereas remaining on CIM, which supported continued shoot and root improvement (Fig.\u00a04D).<\/p>\n
Regeneration effectivity, calculated as the proportion of embryogenic calli producing shoots and roots relative to the full variety of embryogenic calli evaluated, reached 45.0\u2009\u00b1\u200923.3% (n\u2009=\u20097) (Fig.\u00a03E). Particular person embryogenic calli regularly produced a number of shoots, demonstrating the regenerative competence and totipotency of the induced tissues.<\/p>\n
As soon as regenerated constructions had been established, regenerating calli had been transferred to MS+10\u00a0S medium to advertise additional plantlet development and elongation. Following switch to MS+10\u00a0S medium below a 16\u00a0h mild\/8\u00a0h darkish photoperiod, regenerated plantlets continued shoot and root elongation, reaching roughly 5\u20137\u00a0cm in top and creating a purposeful root system (Fig.\u00a04E). Collectively, these outcomes set up a reproducible regeneration system for P. australis, encompassing seed germination, embryogenic callus induction, and full plant regeneration below managed in vitro situations.<\/p>\n
Statistical evaluation<\/h3>\n
Statistical analyses had been carried out utilizing GraphPad Prism model 8.0.1 (GraphPad Software program, San Diego, CA, USA). Germination percentages had been analyzed utilizing a cumulative Gaussian (inverse regular) mannequin to characterize germination dynamics over time.<\/p>\n
For germination assays, 4 impartial organic replicates had been evaluated. Early development experiments consisted of three organic replicates containing 5 seedlings every. Callus induction assays had been carried out utilizing 5 impartial tradition plates containing 12 explants per plate. Regeneration effectivity was calculated from seven impartial embryogenic calli evaluated for shoot and root formation throughout the regeneration course of.<\/p>\n
Knowledge are offered as imply\u2009\u00b1\u2009commonplace deviation (SD). Variations amongst remedies or analysis occasions had been assessed utilizing one-way evaluation of variance (ANOVA) adopted by Tukey\u2019s a number of comparability check. Statistical significance was established at p\u2009<\u20090.05.<\/p>\n<\/div>\n
\n
Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Plant materials and seed sterilization The plant materials used on this research originated from seeds obtained from an experimental nursery. These nursery seeds had been initially sourced from wild populations naturally rising on a copper mine tailings storage facility situated at Planta Manuel Antonio Matta, Atacama Area, northern Chile (27.3\u00b0 S, 70.3\u00b0 W)12. No wild […]<\/p>\n","protected":false},"author":1,"featured_media":4711,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg","fifu_image_alt":"","jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"jnews_override_bookmark_settings":[],"jnews_social_meta":[],"jnews_override_counter":[],"footnotes":""},"categories":[10],"tags":[4824,4825,4821,3300,4819,4822,1555,4823,342,4820,4279],"class_list":["post-4709","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biotechnology","tag-australis","tag-brong","tag-chilean","tag-culture","tag-establishment","tag-grass","tag-native","tag-polypogon","tag-protocol","tag-regeneration","tag-vitro"],"yoast_head":"\n
Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong - Future News 24<\/title>\n<meta name=\"description\" content=\"Polypogon australis Brong. is a native Chilean grass frequently found colonizing metal-rich mine tailings, yet it lacks an established in vitro regeneration system to support controlled physiological and biotechnological studies. Here, we report a reproducible protocol for seed germination, callus induction, and plant regeneration using coleoptile–mesocotyl explants. Surface-sterilized seeds were germinated on Murashige and Skoog (MS) medium supplemented with sucrose, achieving a cumulative germination percentage of 47.67 ± 3.15% after 15 days. The coleoptile–mesocotyl explant proved highly responsive to culture on callus induction medium (CIM) supplemented with dicamba, resulting in a callus induction frequency of 30.55 ± 11.96% after 3–5 weeks. Induced calli were predominantly embryogenic, with embryogenic calli representing 65.42 ± 8.61% of the total callus population. Embryogenic calli regenerated complete plantlets with a regeneration efficiency of 45.0 ± 23.3%. Organogenic structures, including primary shoots and roots, developed directly from embryogenic calli maintained on callus induction medium (CIM) supplemented with dicamba, without transfer to a specialized regeneration medium containing organogenesis-promoting growth regulators. After the initiation of organogenesis, cultures were exposed to a 16 h light\/8 h dark photoperiod while remaining on CIM, and regenerated plantlets were subsequently transferred to MS+10 S medium for further growth and elongation. This study establishes the first complete in vitro regeneration system for P. australis, providing a practical framework for future physiological studies, large-scale propagation, genetic transformation, and genome engineering applications in this ecologically relevant native Chilean grass.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong - Future News 24\" \/>\n<meta property=\"og:description\" content=\"Polypogon australis Brong. is a native Chilean grass frequently found colonizing metal-rich mine tailings, yet it lacks an established in vitro regeneration system to support controlled physiological and biotechnological studies. Here, we report a reproducible protocol for seed germination, callus induction, and plant regeneration using coleoptile–mesocotyl explants. Surface-sterilized seeds were germinated on Murashige and Skoog (MS) medium supplemented with sucrose, achieving a cumulative germination percentage of 47.67 ± 3.15% after 15 days. The coleoptile–mesocotyl explant proved highly responsive to culture on callus induction medium (CIM) supplemented with dicamba, resulting in a callus induction frequency of 30.55 ± 11.96% after 3–5 weeks. Induced calli were predominantly embryogenic, with embryogenic calli representing 65.42 ± 8.61% of the total callus population. Embryogenic calli regenerated complete plantlets with a regeneration efficiency of 45.0 ± 23.3%. Organogenic structures, including primary shoots and roots, developed directly from embryogenic calli maintained on callus induction medium (CIM) supplemented with dicamba, without transfer to a specialized regeneration medium containing organogenesis-promoting growth regulators. After the initiation of organogenesis, cultures were exposed to a 16 h light\/8 h dark photoperiod while remaining on CIM, and regenerated plantlets were subsequently transferred to MS+10 S medium for further growth and elongation. This study establishes the first complete in vitro regeneration system for P. australis, providing a practical framework for future physiological studies, large-scale propagation, genetic transformation, and genome engineering applications in this ecologically relevant native Chilean grass.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/\" \/>\n<meta property=\"og:site_name\" content=\"Future News 24\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-04T00:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-05T08:59:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg\" \/>\n<meta name=\"author\" content=\"Future News 24\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Future News 24\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/\"},\"author\":{\"name\":\"Future News 24\",\"@id\":\"https:\\\/\\\/futurenews24.com\\\/#\\\/schema\\\/person\\\/cecad1bde21cfc357cf70128144d6c83\"},\"headline\":\"Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong\",\"datePublished\":\"2026-09-04T00:00:00+00:00\",\"dateModified\":\"2026-09-05T08:59:30+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/\"},\"wordCount\":902,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/futurenews24.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/media.springernature.com\\\/m685\\\/springer-static\\\/image\\\/art%3A10.1038%2Fs41598-026-61154-w\\\/MediaObjects\\\/41598_2026_61154_Fig1_HTML.jpg\",\"keywords\":[\"australis\",\"Brong\",\"Chilean\",\"culture\",\"Establishment\",\"grass\",\"Native\",\"Polypogon\",\"Protocol\",\"regeneration\",\"vitro\"],\"articleSection\":[\"BioTechnology\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/\",\"url\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/\",\"name\":\"Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong - Future News 24\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/futurenews24.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/futurenews24.com\\\/index.php\\\/2026\\\/09\\\/04\\\/s41598-026-61154-w\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/media.springernature.com\\\/m685\\\/springer-static\\\/image\\\/art%3A10.1038%2Fs41598-026-61154-w\\\/MediaObjects\\\/41598_2026_61154_Fig1_HTML.jpg\",\"datePublished\":\"2026-09-04T00:00:00+00:00\",\"dateModified\":\"2026-09-05T08:59:30+00:00\",\"description\":\"Polypogon australis Brong. is a native Chilean grass frequently found colonizing metal-rich mine tailings, yet it lacks an established in vitro regeneration system to support controlled physiological and biotechnological studies. 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Here, we report a reproducible protocol for seed germination, callus induction, and plant regeneration using coleoptile–mesocotyl explants. Surface-sterilized seeds were germinated on Murashige and Skoog (MS) medium supplemented with sucrose, achieving a cumulative germination percentage of 47.67 ± 3.15% after 15 days. The coleoptile–mesocotyl explant proved highly responsive to culture on callus induction medium (CIM) supplemented with dicamba, resulting in a callus induction frequency of 30.55 ± 11.96% after 3–5 weeks. Induced calli were predominantly embryogenic, with embryogenic calli representing 65.42 ± 8.61% of the total callus population. Embryogenic calli regenerated complete plantlets with a regeneration efficiency of 45.0 ± 23.3%. Organogenic structures, including primary shoots and roots, developed directly from embryogenic calli maintained on callus induction medium (CIM) supplemented with dicamba, without transfer to a specialized regeneration medium containing organogenesis-promoting growth regulators. After the initiation of organogenesis, cultures were exposed to a 16 h light\/8 h dark photoperiod while remaining on CIM, and regenerated plantlets were subsequently transferred to MS+10 S medium for further growth and elongation. This study establishes the first complete in vitro regeneration system for P. australis, providing a practical framework for future physiological studies, large-scale propagation, genetic transformation, and genome engineering applications in this ecologically relevant native Chilean grass.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/","og_locale":"en_US","og_type":"article","og_title":"Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong - Future News 24","og_description":"Polypogon australis Brong. is a native Chilean grass frequently found colonizing metal-rich mine tailings, yet it lacks an established in vitro regeneration system to support controlled physiological and biotechnological studies. Here, we report a reproducible protocol for seed germination, callus induction, and plant regeneration using coleoptile–mesocotyl explants. Surface-sterilized seeds were germinated on Murashige and Skoog (MS) medium supplemented with sucrose, achieving a cumulative germination percentage of 47.67 ± 3.15% after 15 days. The coleoptile–mesocotyl explant proved highly responsive to culture on callus induction medium (CIM) supplemented with dicamba, resulting in a callus induction frequency of 30.55 ± 11.96% after 3–5 weeks. Induced calli were predominantly embryogenic, with embryogenic calli representing 65.42 ± 8.61% of the total callus population. Embryogenic calli regenerated complete plantlets with a regeneration efficiency of 45.0 ± 23.3%. Organogenic structures, including primary shoots and roots, developed directly from embryogenic calli maintained on callus induction medium (CIM) supplemented with dicamba, without transfer to a specialized regeneration medium containing organogenesis-promoting growth regulators. After the initiation of organogenesis, cultures were exposed to a 16 h light\/8 h dark photoperiod while remaining on CIM, and regenerated plantlets were subsequently transferred to MS+10 S medium for further growth and elongation. This study establishes the first complete in vitro regeneration system for P. australis, providing a practical framework for future physiological studies, large-scale propagation, genetic transformation, and genome engineering applications in this ecologically relevant native Chilean grass.","og_url":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/","og_site_name":"Future News 24","article_published_time":"2026-09-04T00:00:00+00:00","article_modified_time":"2026-09-05T08:59:30+00:00","og_image":[{"url":"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg","type":"","width":"","height":""}],"author":"Future News 24","twitter_card":"summary_large_image","twitter_image":"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg","twitter_misc":{"Written by":"Future News 24","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#article","isPartOf":{"@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/"},"author":{"name":"Future News 24","@id":"https:\/\/futurenews24.com\/#\/schema\/person\/cecad1bde21cfc357cf70128144d6c83"},"headline":"Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong","datePublished":"2026-09-04T00:00:00+00:00","dateModified":"2026-09-05T08:59:30+00:00","mainEntityOfPage":{"@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/"},"wordCount":902,"commentCount":0,"publisher":{"@id":"https:\/\/futurenews24.com\/#organization"},"image":{"@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#primaryimage"},"thumbnailUrl":"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg","keywords":["australis","Brong","Chilean","culture","Establishment","grass","Native","Polypogon","Protocol","regeneration","vitro"],"articleSection":["BioTechnology"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/","url":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/","name":"Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong - Future News 24","isPartOf":{"@id":"https:\/\/futurenews24.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#primaryimage"},"image":{"@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#primaryimage"},"thumbnailUrl":"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg","datePublished":"2026-09-04T00:00:00+00:00","dateModified":"2026-09-05T08:59:30+00:00","description":"Polypogon australis Brong. is a native Chilean grass frequently found colonizing metal-rich mine tailings, yet it lacks an established in vitro regeneration system to support controlled physiological and biotechnological studies. Here, we report a reproducible protocol for seed germination, callus induction, and plant regeneration using coleoptile–mesocotyl explants. Surface-sterilized seeds were germinated on Murashige and Skoog (MS) medium supplemented with sucrose, achieving a cumulative germination percentage of 47.67 ± 3.15% after 15 days. The coleoptile–mesocotyl explant proved highly responsive to culture on callus induction medium (CIM) supplemented with dicamba, resulting in a callus induction frequency of 30.55 ± 11.96% after 3–5 weeks. Induced calli were predominantly embryogenic, with embryogenic calli representing 65.42 ± 8.61% of the total callus population. Embryogenic calli regenerated complete plantlets with a regeneration efficiency of 45.0 ± 23.3%. Organogenic structures, including primary shoots and roots, developed directly from embryogenic calli maintained on callus induction medium (CIM) supplemented with dicamba, without transfer to a specialized regeneration medium containing organogenesis-promoting growth regulators. After the initiation of organogenesis, cultures were exposed to a 16 h light\/8 h dark photoperiod while remaining on CIM, and regenerated plantlets were subsequently transferred to MS+10 S medium for further growth and elongation. This study establishes the first complete in vitro regeneration system for P. australis, providing a practical framework for future physiological studies, large-scale propagation, genetic transformation, and genome engineering applications in this ecologically relevant native Chilean grass.","breadcrumb":{"@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#primaryimage","url":"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg","contentUrl":"https:\/\/media.springernature.com\/m685\/springer-static\/image\/art%3A10.1038%2Fs41598-026-61154-w\/MediaObjects\/41598_2026_61154_Fig1_HTML.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/futurenews24.com\/index.php\/2026\/09\/04\/s41598-026-61154-w\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/futurenews24.com\/"},{"@type":"ListItem","position":2,"name":"Institution of an in vitro tradition and regeneration protocol for the native Chilean grass Polypogon australis Brong"}]},{"@type":"WebSite","@id":"https:\/\/futurenews24.com\/#website","url":"https:\/\/futurenews24.com\/","name":"Future News 24","description":"The Smart Hub for AI and Next-Gen Innovation","publisher":{"@id":"https:\/\/futurenews24.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/futurenews24.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/futurenews24.com\/#organization","name":"Future News 24","url":"https:\/\/futurenews24.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/futurenews24.com\/#\/schema\/logo\/image\/","url":"https:\/\/futurenews24.com\/wp-content\/uploads\/2026\/06\/fn24-favicon.png","contentUrl":"https:\/\/futurenews24.com\/wp-content\/uploads\/2026\/06\/fn24-favicon.png","width":250,"height":250,"caption":"Future News 24"},"image":{"@id":"https:\/\/futurenews24.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/futurenews24.com\/#\/schema\/person\/cecad1bde21cfc357cf70128144d6c83","name":"Future News 24","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/d57f07142d73cb5503ab2446ea7bc9ef3d0a5ba378d64a6157692311e42bf097?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/d57f07142d73cb5503ab2446ea7bc9ef3d0a5ba378d64a6157692311e42bf097?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/d57f07142d73cb5503ab2446ea7bc9ef3d0a5ba378d64a6157692311e42bf097?s=96&d=mm&r=g","caption":"Future News 24"},"sameAs":["https:\/\/futurenews24.com"],"url":"https:\/\/futurenews24.com\/index.php\/author\/mridulpahuja20\/"}]}},"_links":{"self":[{"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/posts\/4709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/comments?post=4709"}],"version-history":[{"count":1,"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/posts\/4709\/revisions"}],"predecessor-version":[{"id":4710,"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/posts\/4709\/revisions\/4710"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/media\/4711"}],"wp:attachment":[{"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/media?parent=4709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/categories?post=4709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/futurenews24.com\/index.php\/wp-json\/wp\/v2\/tags?post=4709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}