2024-03-29T09:17:56Z
https://soar-ir.repo.nii.ac.jp/oai
oai:soar-ir.repo.nii.ac.jp:00010271
2022-12-14T04:28:04Z
1016:1017
Transcriptome Analysis of WIPK/SIPK-Suppressed Plants Reveals Induction by Wounding of Disease Resistance-Related Genes Prior to the Accumulation of Salicylic Acid
Katou, Shinpei
Asakura, Nobuhide
Kojima, Tomoya
Mitsuhara, Ichiro
Seo, Shigemi
This is a pre-copy-editing, author-produced PDF of an article accepted for publication in PLANT AND CELL PHYSIOLOGY following peer review. The definitive publisher-authenticated version Plant Cell Physiol (2013) 54 (6): 1005-1015. is available online at: https://doi.org/10.1093/pcp/pct055 .
MAPK
Nicotiana tabacum
R gene
Salicylate
Wound
Salicylic acid (SA) plays a key role in plant resistance to pathogens. Accumulation of SA is induced by wounding in tobacco plants in which the expression of WIPK and SIPK, two mitogen-activated protein kinases, is suppressed. Here, the mechanisms underlying the abnormal accumulation of SA in WIPK/SIPK-suppressed plants have been characterized. SA accumulation started around 12 h after wounding and was inhibited by cycloheximide (CHX), a protein synthesis inhibitor. SA accumulation, however, was enhanced several fold when leaf discs were transferred onto CHX after floating on water for >= 6 h. Temporal and spatial analyses of wound-induced and CHX-enhanced SA accumulation suggested that wounding induces activators for SA accumulation followed by the generation of repressors, and late CHX treatment inhibits the production of repressors more efficiently than that of activators. Microarray analysis revealed that the expression of many disease resistance-related genes, including N, a Resistance (R) gene for Tobacco mosaic virus and R gene-like genes, was up-regulated in wounded WIPK/SIPK-suppressed plants. Expression of the N gene and R gene-like genes peaked earlier than that of most other genes as well as SA accumulation, and was mainly induced in those parts of leaf discs where SA was highly accumulated. Moreover, wound-induced SA accumulation was decreased by the treatments which compromise the function of R proteins. These results indicate that signaling leading to the expression of disease resistance-related genes is activated by wounding in WIPK/SIPK-suppressed plants, and induction of R gene and R gene-like genes might lead to the biosynthesis of SA.
Article
PLANT AND CELL PHYSIOLOGY. 54(6):1005-1015 (2013)
OXFORD UNIV PRESS
2013-06
eng
journal article
AM
http://hdl.handle.net/10091/17113
https://soar-ir.repo.nii.ac.jp/records/10271
https://pubmed.ncbi.nlm.nih.gov/23574699/
23574699
https://doi.org/10.1093/pcp/pct055
10.1093/pcp/pct055
0032-0781
AA0077511X
PLANT AND CELL PHYSIOLOGY
54
6
1005
1015
https://soar-ir.repo.nii.ac.jp/record/10271/files/Transcriptome_analysis_WIPKSIPK-suppressed_plants_reveals.pdf
application/pdf
1.6 MB
2015-09-25