LBD29 regulates the cell cycle progression in response to auxin during lateral root formation in Arabidopsis thaliana.

Annals of Botany
Zhenhua FengJian Zhu

Abstract

LATERAL ORGAN BOUNDARIES DOMAIN 29 (LBD29), an important molecule downstream of auxin response factors ARF7 and ARF19, has a critical role in lateral root formation in Arabidopsis thaliana. The cell cycle activation of pericycle cells and their specification triggered by auxin are crucial for the initiation of lateral roots. In this study, we attempted to determine whether LBD29 is involved in auxin signalling and/or cell cycle regulation and to characterize the roles of LBD29 in these processes. The impact of LBD29 on cell cycling progression in pericycle cells was investigated in lbd29 loss-of-function mutant or LBD29-over-expressing plants. The cell cycle was determined by measuring the expression of some cell cycle-related genes using in situ hybridization and quantitative real-time reverse transcription-PCR (qRT-PCR). Furthermore, the cell division in the root explants from either the lbd29 mutant, LBD29-over-expressing plants or the wild type grown in auxin-rich media was also analysed and compared by the distribution of DR5:β-glucuronidase (GUS) in the primordia or by the expression of PIN-FORMED (PIN) members and PLETHROA 1 (PLT1) which represented the auxin response by the pericycle cells. lbd29 mutation resulted in red...Continue Reading

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Citations

Nov 22, 2013·Journal of Experimental Botany·Nijat IminMichael A Djordjevic
Jul 7, 2015·Plant Signaling & Behavior·Deepak BhardwajNarendra Tuteja
Jan 24, 2015·Journal of Plant Physiology·Enrique Martínez-de la CruzJosé López-Bucio
Nov 28, 2018·Journal of Experimental Botany·Hans Motte, Tom Beeckman
Apr 1, 2020·International Journal of Molecular Sciences·Yuwen ZhangXiangyuan Wan
Jan 11, 2019·Planta·Chuloh ChoJungmook Kim
Jun 27, 2018·Cellular and Molecular Life Sciences : CMLS·Wu LiuLin Xu
Oct 19, 2020·The New Phytologist·Tomás M TessiMarcelo Desimone
Dec 11, 2021·Plant Biotechnology Journal·Chaonan LiRuilian Jing

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