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PUCHI regulates very long chain fatty acid biosynthesis during lateral root and callus formation

by Lucas, Mikaël , Tellier, Frédérique , Drogue, Quentin , Boutté, Yohann , Goh, Tatsuaki , Trinh, Duy-Chi , Gantet, Pascal , Lavenus, Julien , Guyomarc’h, Soazig , Voß, Ute , Fukaki, Hidehiro , Faure, Jean-Denis , Bennett, Malcolm J. , Vaissayre, Virginie , Dussert, Stéphane , Laplaze, Laurent

in Arabidopsis - genetics / Arabidopsis - growth & development / Arabidopsis Proteins - genetics / Biochemistry, Molecular Biology / Biological Sciences / Biosynthesis / Bony Callus - growth & development / Bony Callus - metabolism / Botanics / Callus / Cell growth / Cell proliferation / Cell Proliferation - genetics / Computer architecture / Deficient mutant / Development Biology / Fatty acids / Fatty Acids - biosynthesis / Fatty Acids - genetics / Genomics / Indoleacetic Acids - metabolism / Life Sciences / Morphogenesis / Organogenesis / Phenotypes / Plant Biology / Plant Development - genetics / Plant roots / Plant Roots - genetics / Plant Roots - growth & development / Primordia / Root development / Roots / Target recognition / Transcription Factors - genetics / Vegetal Biology

2019

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PUCHI regulates very long chain fatty acid biosynthesis during lateral root and callus formation

2019

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PUCHI regulates very long chain fatty acid biosynthesis during lateral root and callus formation

2019

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Journal Article

PUCHI regulates very long chain fatty acid biosynthesis during lateral root and callus formation

Lucas, Mikaël,

Tellier, Frédérique,

Drogue, Quentin,

Boutté, Yohann,

Goh, Tatsuaki,

Trinh, Duy-Chi,

Gantet, Pascal,

Lavenus, Julien,

Guyomarc’h, Soazig,

Voß, Ute,

Fukaki, Hidehiro,

Faure, Jean-Denis,

Bennett, Malcolm J.,

Vaissayre, Virginie,

Dussert, Stéphane,

Laplaze, Laurent

2019

Overview

Lateral root organogenesis plays an essential role in elaborating plant root system architecture. In Arabidopsis, the AP2 family transcription factor PUCHI controls cell proliferation in lateral root primordia. To identify potential targets of PUCHI, we analyzed a time course transcriptomic dataset of lateral root formation. We report that multiple genes coding for very long chain fatty acid (VLCFA) biosynthesis enzymes are induced during lateral root development in a PUCHI-dependent manner. Significantly, several mutants perturbed in VLCFA biosynthesis show similar lateral root developmental defects as puchi-1. Moreover, puchi-1 roots display the same disorganized callus formation phenotype as VLCFA biosynthesis-deficient mutants when grown on auxin-rich callus-inducing medium. Lipidomic profiling of puchi-1 roots revealed reduced VLCFA content compared with WT. We conclude that PUCHI-regulated VLCFA biosynthesis is part of a pathway controlling cell proliferation during lateral root and callus formation.

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Publisher

National Academy of Sciences

Subject

Arabidopsis - genetics

/ Arabidopsis - growth & development

/ Arabidopsis Proteins - genetics

/ Biochemistry, Molecular Biology

/ Biological Sciences

/ Biosynthesis

/ Bony Callus - growth & development