Tissues and organs within a living organism are coordinated,but the underlying mechanisms are not well understood.The shoot apical meristem(SAM)continually produces lateral organs,such as leaves,from its peripheral zo...Tissues and organs within a living organism are coordinated,but the underlying mechanisms are not well understood.The shoot apical meristem(SAM)continually produces lateral organs,such as leaves,from its peripheral zone.Because of their close proximity,SAM and lateral organs interact during plant development.Existing lateral organs influence the positions of newly formed organs to determine the phyllotaxis.The SAM not only produces lateral organs,but also influences their morphogenesis.In particular,the SAM promotes leaf polarity determination and leaf blade formation.Furthermore,lateral organs help the SAM to maintain homeostasis by restricting stem cell activity.Recent advances have started to elucidate how SAM and lateral organs patterning and growth are coordinated in the shoot apex.In this review,we discuss recent findings on the interaction between SAM and lateral organs during plant development.In particular,polar auxin transport appears to be a commonly used coordination mechanism.展开更多
基金The work of the authors was funded by the National Natural Science Foundation of China Grants 31872835,31861143021 and 31825002CAS Key Research Project of the Frontier Science Grant ZDBS-LYSM012.YJ is a Newton Advanced Fellow of the Royal Society(NAF\R1\180125).
文摘Tissues and organs within a living organism are coordinated,but the underlying mechanisms are not well understood.The shoot apical meristem(SAM)continually produces lateral organs,such as leaves,from its peripheral zone.Because of their close proximity,SAM and lateral organs interact during plant development.Existing lateral organs influence the positions of newly formed organs to determine the phyllotaxis.The SAM not only produces lateral organs,but also influences their morphogenesis.In particular,the SAM promotes leaf polarity determination and leaf blade formation.Furthermore,lateral organs help the SAM to maintain homeostasis by restricting stem cell activity.Recent advances have started to elucidate how SAM and lateral organs patterning and growth are coordinated in the shoot apex.In this review,we discuss recent findings on the interaction between SAM and lateral organs during plant development.In particular,polar auxin transport appears to be a commonly used coordination mechanism.
