Ovule initiation:the essential step controlling offspring number in Arabidopsis  

作　　者：Shi-Xia Yu Yu-Tong Jiang Wen-Hui Lin 

机构地区：[1]The Joint International Research Laboratory of Metabolic and Developmental Sciences,School of Life Sciences and Biotechnology,Shanghai Jiao Tong University,Shanghai 200240,China [2]Shanghai Collaborative Innovation Center of Agri‐Seeds/Joint Center for Single Cell Biology,Shanghai Jiao Tong University,Shanghai 200240,China [3]School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Journal of Integrative Plant Biology》2022年第8期1469-1486,共18页植物学报（英文版）

基　　金：the findings from the National Natural Science Foundation of China(32070342 and 31771591);the national basic research program of China(2014CB943404);Shanghai Jiao Tong University Ji RLMDS Joint Research Fund(MDS-JF-2020-8);the Agri-X Interdisciplinary Fund of Shanghai Jiao Tong University(Agri-X20200204 and Agri-X2017006);the Bio-X Interdisciplinary Fund of Shanghai Jiao Tong University(20CX-04);the Scientific and Technological Innovation Funds of Shanghai Jiao Tong University(19×160020009)。

摘　　要：Seed is the offspring of angiosperms.Plants produce large numbers of seeds to ensure effective reproduction and survival in varying environments.Ovule is a fundamentally important organ and is the precursor of the seed.In Arabidopsis and other plants characterized by multi-ovulate ovaries,ovule initiation determines the maximal ovule number,thus greatly affecting seed number per fruit and seed yield.Investigating the regulatory mechanism of ovule initiation has both scientific and economic significance.However,the genetic and molecular basis underlying ovule initiation remains unclear due to technological limitations.Very recently,rules governing the multiple ovules initiation from one placenta have been identified,the individual functions and crosstalk of phytohormones in regulating ovule initiation have been further characterized,and new regulators of ovule boundary are reported,therefore expanding the understanding of this field.In this review,we present an overview of current knowledge in ovule initiation and summarize the significance of ovule initiation in regulating the number of plant offspring,as well as raise insights for the future study in this field that provide potential routes for the improvement of crop yield.

关 键 词：asynchronous initiation of ovule primordia early and late ovule initiation placenta elongation plant hormones seed number per fruit 

分 类 号：Q945[生物学—植物学]