AP2/ERF transcription factors orchestrate very long chain fatty acid biosynthesis during Arabidopsis lateral root development  

作　　者：Soazig Guyomarc'h Yohann Boutte Laurent Laplaze 

机构地区：[1]UMR DIADE,Universitéde Montpellier,IRD,Montpellier,France [2]LBM,Bordeaux,France

出　　处：《Molecular Plant》2021年第2期205-207,共3页分子植物（英文版）

基　　金：Research in the authors'lab is supported by the ANR projects NewRoot(no.ANR-17-CE13-0004 to S.G.);caLIPSO(ANR-18-CE13-0025 to Y.B.).

摘　　要：One key factor defining root system architecture is root branching,i.e.,the process of the formation of new root axes,called lateral roots(LRs),from an existing root.In the model plant Arabidopsis thaliana,LRs originate from preselected pericycle cells that divide to create an LR primordium(LRP)that grows and eventually forms a new root apical meristem(Banda et al.,2019).During this developmental process,cell-fate acquisition is very plastic and depends on positional information rather than on cell lineage(Banda et al.,2019).Importantly,LR formation occurs inside the parent root,and the LRP must grow through overlying tissues before emerging into the soil.This LR emergence process is controlled by dynamic intercellular signaling and involves a tight coordination of cellular responses in the LRP and surrounding tissues(Banda et al.,2019).In particular,the growing LRP rapidly pushes against the overlying endodermis,a layer of cells mechanically reinforced by the Casparian strip.The crossing of the endodermis by the LRP between stagesⅣand V has been proposed as an important developmental checkpoint during LR development(Banda et al.,2019).

关 键 词：eventually ARABIDOPSIS branching 

分 类 号：Q94[生物学—植物学]