論文

査読有り
2017年6月

Global profiling of phytohormone dynamics during combined drought and pathogen stress in Arabidopsis thaliana reveals ABA and JA as major regulators

SCIENTIFIC REPORTS
  • Aarti Gupta
  • ,
  • Hiroshi Hisano
  • ,
  • Yuko Hojo
  • ,
  • Takakazu Matsuura
  • ,
  • Yoko Ikeda
  • ,
  • Izumi C. Mori
  • ,
  • Muthappa Senthil-Kumar

7
1
開始ページ
4017
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/s41598-017-03907-2
出版者・発行元
NATURE PUBLISHING GROUP

Global transcriptome studies demonstrated the existence of unique plant responses under combined stress which are otherwise not seen during individual stresses. In order to combat combined stress plants use signaling pathways and 'cross talk' mediated by hormones involved in stress and growth related processes. However, interactions among hormones' pathways in combined stressed plants are not yet known. Here we studied dynamics of different hormones under individual and combined drought and pathogen infection in Arabidopsis thaliana by liquid chromatography-mass spectrometry (LC-MS) based profiling. Our results revealed abscisic acid (ABA) and salicylic acid (SA) as key regulators under individual drought and pathogen stress respectively. Under combined drought and host pathogen stress (DH) we observed non-induced levels of ABA with an upsurge in SA and jasmonic acid (JA) concentrations, underscoring their role in basal tolerance against host pathogen. Under a non-host pathogen interaction with drought (DNH) stressed plants, ABA, SA and JA profiles were similar to those under DH or non-host pathogen alone. We propose that plants use SA/JA dependent signaling during DH stress which antagonize ABA biosynthesis and signaling pathways during early stage of stress. The study provides insights into hormone modulation at different time points during combined stress.

リンク情報
DOI
https://doi.org/10.1038/s41598-017-03907-2
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/28638069
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000403841100023&DestApp=WOS_CPL
ID情報
  • DOI : 10.1038/s41598-017-03907-2
  • ISSN : 2045-2322
  • PubMed ID : 28638069
  • Web of Science ID : WOS:000403841100023

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