Universität zu Köln

Frerigmann, Henning ORCID: 0000-0002-7067-2721 and Gigolashvili, Tamara ORCID: 0000-0002-0416-4796 (2014). MYB34, MYB51, and MYB122 Distinctly Regulate Indolic Glucosinolate Biosynthesis in Arabidopsis thaliana. Mol. Plant., 7 (5). S. 814 - 829. CAMBRIDGE: CELL PRESS. ISSN 1752-9867

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Abstract

The MYB34, MYB51, and MYB122 transcription factors are known to regulate indolic glucosinolate (IG) biosynthesis in Arabidopsis thaliana. To determine the distinct regulatory potential of MYB34, MYB51, and MYB122, the accumulation of IGs in different parts of plants and upon treatment with plant hormones were analyzed in A. thaliana seedlings. It was shown that MYB34, MYB51, and MYB122 act together to control the biosynthesis of I3M in shoots and roots, with MYB34 controlling biosynthesis of IGs mainly in the roots, MYB51 regulating biosynthesis in shoots, and MYB122 having an accessory role in the biosynthesis of IGs. Analysis of glucosinolate levels in seedlings of myb34, myb51, myb122, myb34 myb51 double, and myb34 myb51 myb122 triple knockout mutants grown in the presence of abscisic acid (ABA), salicylic acid (SA), jasmonate (JA), or ethylene (ET) revealed that: (1) MYB51 is the central regulator of IG synthesis upon SA and ET signaling, (2) MYB34 is the key regulator upon ABA and JA signaling, and (3) MYB122 plays only a minor role in JA/ET-induced glucosinolate biosynthesis. The myb34 myb51 myb122 triple mutant is devoid of IGs, indicating that these three MYB factors are indispensable for IG production under standard growth conditions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Frerigmann, Henning UNSPECIFIED orcid.org/0000-0002-7067-2721 UNSPECIFIED Gigolashvili, Tamara UNSPECIFIED orcid.org/0000-0002-0416-4796 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-440216
DOI:	10.1093/mp/ssu004
Journal or Publication Title:	Mol. Plant.
Volume:	7
Number:	5
Page Range:	S. 814 - 829
Date:	2014
Publisher:	CELL PRESS
Place of Publication:	CAMBRIDGE
ISSN:	1752-9867
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Biology > Botanical Institute
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language R2R3-MYB TRANSCRIPTION FACTORS; CELL-WALL BIOSYNTHESIS; GREEN PEACH APHID; AUXIN HOMEOSTASIS; COORDINATED CONTROL; NONHOST RESISTANCE; DIRECT TARGET; GENE; ACCUMULATION; RESPONSES Multiple languages Biochemistry & Molecular Biology; Plant Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/44021