{"id":4278,"date":"2020-06-17T10:54:06","date_gmt":"2020-06-17T08:54:06","guid":{"rendered":"https:\/\/ist.blogs.inrae.fr\/afs\/?p=4278"},"modified":"2020-06-17T10:54:06","modified_gmt":"2020-06-17T08:54:06","slug":"fire-and-seed-maturity-drive-the-viability-dormancy-and-germination-of-two-invasive-species-acacia-longifolia-andrews-willd-and-acacia-mearnsii-de-wild","status":"publish","type":"post","link":"https:\/\/ist.blogs.inrae.fr\/afs\/2020\/06\/17\/fire-and-seed-maturity-drive-the-viability-dormancy-and-germination-of-two-invasive-species-acacia-longifolia-andrews-willd-and-acacia-mearnsii-de-wild\/","title":{"rendered":"Fire and seed maturity drive the viability, dormancy, and germination of two invasive species: Acacia longifolia (Andrews) Willd. and Acacia mearnsii De Wild"},"content":{"rendered":"<script type='text\/javascript' src='https:\/\/d1bxh8uas1mnw7.cloudfront.net\/assets\/embed.js'><\/script><p><strong><a href=\"https:\/\/ist.blogs.inrae.fr\/afs\/wp-content\/uploads\/sites\/5\/2020\/06\/Acacia_2020.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4283 alignleft\" src=\"https:\/\/ist.blogs.inrae.fr\/afs\/wp-content\/uploads\/sites\/5\/2020\/06\/Acacia_2020-300x140.png\" alt=\"\" width=\"300\" height=\"140\" srcset=\"https:\/\/ist.blogs.inrae.fr\/afs\/wp-content\/uploads\/sites\/5\/2020\/06\/Acacia_2020-300x140.png 300w, https:\/\/ist.blogs.inrae.fr\/afs\/wp-content\/uploads\/sites\/5\/2020\/06\/Acacia_2020-1024x479.png 1024w, https:\/\/ist.blogs.inrae.fr\/afs\/wp-content\/uploads\/sites\/5\/2020\/06\/Acacia_2020-768x359.png 768w, https:\/\/ist.blogs.inrae.fr\/afs\/wp-content\/uploads\/sites\/5\/2020\/06\/Acacia_2020-640x299.png 640w, https:\/\/ist.blogs.inrae.fr\/afs\/wp-content\/uploads\/sites\/5\/2020\/06\/Acacia_2020.png 1077w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Key message<\/strong><\/p>\n<p style=\"text-align: left\" align=\"justify\"><em>Acacia longifolia<\/em> and <em>Acacia mearnsii<\/em> exhibit different reproductive behavior (viability, germination, and dormancy) in relation to fire and seed maturation. The potential of invasion of <em>A. longifolia<\/em> is stronger than that of <em>A. mearnsii<\/em> . <em>A. longifolia<\/em> germinates abundantly between fires and after fires, while <em>A. mearnsii<\/em> only germinates after fire and needs higher thermal thresholds to break dormancy.<\/p>\n<p><strong>Abstract<\/strong><\/p>\n<p align=\"justify\"><strong>Context<\/strong> Fire affects environments through the modification of biological processes such as seed viability, dormancy, and germination. Seed maturation stage can modulate seed response to fire. Invasive alien species could be enhanced by forest fires.<br \/>\n<strong>Aims<\/strong> To analyze the viability, germination, and dormancy of two invasive alien species (<em>Acacia longifolia <\/em>and<em> Acacia mearnsii<\/em>) in relation to fire and seed maturation.<br \/>\n<strong>Methods<\/strong> Viability of seeds was obtained performing a tetrazolium test. Additionally, we obtained germination and dormancy in mature and fresh seeds simulating fire conditions through different levels of fire factors (smoke, ash, charcoal, and heat).<br \/>\n<strong>Results<\/strong> Control viability of seeds was 100% in the two <em>Acacia<\/em> species and maturation stages and severe heat reduced it to zero. Germination of <em>A. longifolia<\/em> varied depending on the maturation stage, being higher in fresh seeds. In <em>A. mearnsii<\/em>, germination did not change with maturation. In both species, heat stimulated germination by breaking seed dormancy. Seed maturation stage and fire factors affect the germination speed of each species differently.<br \/>\n<strong>Conclusion<\/strong> Fire reduces viability, stimulates germination, and breaks dormancy of the two species. Seed maturity exerts notable effects on <em>A. longifolia<\/em> reproductive behavior.<\/p>\n<p><strong>Keywords<\/strong><br \/>\nInvasive alien species, Seed maturation, Germination, Fire factors, Seed dormancy, <em>Acacia<\/em><\/p>\n<div class='altmetric-embed' data-badge-type='donut' data-doi='10.1007\/s13595-020-00965-x'  style='float: right; ' ><\/div>\n<p><strong>Publication<\/strong><br \/>\nRiveiro, S.F., Cruz, \u00d3., Casal, M. et al. Fire and seed maturity drive the viability, dormancy, and germination of two invasive species: Acacia longifolia (Andrews) Willd. and Acacia mearnsii De Wild. Annals of Forest Science 77, 60 (2020). <a href=\"https:\/\/doi.org\/10.1007\/s13595-020-00965-x\">https:\/\/doi.org\/10.1007\/s13595-020-00965-x<\/a><\/p>\n<p><strong>For the read-only version of the full text:<\/strong><br \/>\n<a href=\"https:\/\/rdcu.be\/b40ri\">https:\/\/rdcu.be\/b40ri<\/a><\/p>\n<p><strong>Data availability<\/strong><br \/>\nThe datasets generated during and\/or analyzed during the current study are available from the corresponding author on reasonable request.<\/p>\n<p><strong>Handling Editor<\/strong><br \/>\nPaulo Fernandes<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Key message Acacia longifolia and Acacia mearnsii exhibit different reproductive behavior (viability, germination, and dormancy) in relation to fire and seed maturation. The potential of invasion of A. longifolia is stronger than that of A. mearnsii . A. longifolia germinates abundantly between fires and after fires, while A. mearnsii only germinates after fire and needs [&hellip;]<\/p>\n","protected":false},"author":109,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,15],"tags":[],"class_list":["post-4278","post","type-post","status-publish","format-standard","hentry","category-article-type","category-research-paper","cat-14-id","cat-15-id"],"_links":{"self":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/4278","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/users\/109"}],"replies":[{"embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/comments?post=4278"}],"version-history":[{"count":0,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/posts\/4278\/revisions"}],"wp:attachment":[{"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/media?parent=4278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/categories?post=4278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ist.blogs.inrae.fr\/afs\/wp-json\/wp\/v2\/tags?post=4278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}