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Nature Plants:局部生长素合成作用于根损伤后的再生

已有 655 次阅读 2020-8-5 09:10 |个人分类:每日摘要|系统分类:论文交流

Local auxin biosynthesis is required for root regeneration after wounding

第一作者Rotem Matosevich


通讯作者Idan Efroni


背景回顾The root meristem can regenerate following removal of its stem-cell niche by recruitment of remnant cells from the stump.

提出问题Regeneration is initiated by rapid accumulation of auxin near the injury site but the source of this auxin is unknown.

主要发现:Here, we show that auxin accumulation arises from the activity of multiple auxin biosynthetic sources that are newly specified near the cut site and that their continuous activity is required for the regeneration process.

结果-Auxin_PIN:Auxin synthesis is highly localized while PIN-mediated transport is dispensable for auxin accumulation and tip regeneration.

结果-ERF115:Roots lacking the activity of the regeneration competence factor ERF115, or that are dissected at a zone of low regeneration potential, fail to activate local auxin sources. Remarkably, restoring auxin supply is sufficient to confer regeneration capacity to these recalcitrant tissues.

结论:We suggest that regeneration competence relies on the ability to specify new local auxin sources in a precise temporal pattern.

 摘  要 



**Idan Efroni**



doi: 10.1038/s41477-020-0737-9

Journal: Nature Plants

Published date: August 03, 2020


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