Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
The jasmonic acid signaling pathway is linked to auxin homeostasis through the regulation of YUCCA8 and YUCCA9 gene expression
Year:2013
Research Areas
  • Molecular, cellular and genetic biology
Information
Abstract
Interactions between phytohormones play important roles in the regulation of plant growth and development, but knowledge of the networks controlling hormonal relationships, such as between oxylipins and auxins, is just emerging. Here, we report the transcriptional regulation of two Arabidopsis YUCCA genes, YUC8 and YUC9, by oxylipins. Similar to previously characterized YUCCA family members, we show that both YUC8 and YUC9 are involved in auxin biosynthesis, as demonstrated by the increased auxin contents and auxin-dependent phenotypes displayed by gain-of-function mutants as well as the significantly decreased indole-3-acetic acid (IAA) levels in yuc8 and yuc8/9 knockout lines. Gene expression data obtained by qPCR analysis and microscopic examination of promoter-reporter lines reveal an oxylipin-mediated regulation of YUC9 expression that is dependent on the COI1 signal transduction pathway. In support of these findings, the roots of the analyzed yuc knockout mutants displayed a reduced response to methyl jasmonate (MeJA). The similar response of the yuc8 and yuc9 mutants to MeJA in cotyledons and hypocotyls suggests functional overlap of YUC8 and YUC9 in aerial tissues, while their function in roots shows some specificity, probably in part related to different spatio-temporal expression patterns of the two genes. These results provide evidence for an intimate functional relationship between oxylipin signaling and auxin homeostasis.
International
Si
JCR
Si
Title
The Plant Journal
ISBN
0960-7412
Impact factor JCR
6,16
Impact info
JCR
Volume
74
10.1111/tpj.12152
Journal number
4
From page
626
To page
637
Month
MAYO
Ranking
ISI Journal Citation Reports © Ranking: 2011: 8/190 (Plant Sciences)
Participants
  • Autor: Mathias Hentrich (Ruhr University Bochum)
  • Autor: Christine Böttcher (Ruhr University Bochum)
  • Autor: Petra Düchting (Ruhr University Bochum)
  • Autor: Youfa Cheng (University of California at San Diego)
  • Autor: Yunde Zhao (University of California at San Diego)
  • Autor: Oliver Berkowitz (Australian National University)
  • Autor: Josette Masle (Australian National University)
  • Autor: Joaquin Medina Alcazar (UPM)
  • Autor: Stephan Pollmann (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Redes Reguladoras del Desarrollo y Respuesta a Estrés en Plantas
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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