KLUH/CYP78A5 promotes organ growth without affecting the size of the early primordium.

Plant Signaling & Behavior
Lena StransfeldMichael Lenhard

Abstract

Mobile signals play a key role in controlling the growth of organisms. In Arabidopsis, the cytochrome P450 CYP78A5/KLUH (KLU) non-cell autonomously stimulates cell proliferation in developing organs. In a recent study, we determined the range of KLU action, using a widely applicable system to generate predictable chimaeric plants. We showed that KLU acts not only within individual floral organs or flowers, but that its overall activity level is integrated across an inflorescence to determine organ size. Here, we address the question at which stage of petal development KLU acts to promote growth. We demonstrate that the size of the very young petal primordium in klu mutants is not altered, supporting the conclusion that KLU acts during later stages of organ outgrowth and a correspondingly longer range of the presumed KLU-dependent growth signal.

References

Aug 30, 2006·Proceedings of the National Academy of Sciences of the United States of America·Olivier SerralboBen Scheres
Dec 7, 2007·Developmental Cell·Elena AnastasiouMichael Lenhard
Mar 2, 2010·Current Biology : CB·Sven ErikssonMichael Lenhard

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Citations

Mar 10, 2012·Trends in Plant Science·Nathalie GonzalezDirk Inzé
Jun 7, 2014·Wiley Interdisciplinary Reviews. Developmental Biology·Ramiro E RodriguezJavier F Palatnik
Sep 27, 2014·Plant, Cell & Environment·Fan XuChengcai Chu
Aug 19, 2014·Frontiers in Plant Science·Shweta KalveGerrit T S Beemster
Feb 23, 2021·Journal of Integrative Plant Biology·Hongfeng WangChuanen Zhou

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