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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erv125
|2 doi
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|a pubmed24n0826.xml
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|a (DE-627)NLM248049100
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|a (NLM)25873659
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Cai, Hanyang
|e verfasserin
|4 aut
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|a CaWRKY6 transcriptionally activates CaWRKY40, regulates Ralstonia solanacearum resistance, and confers high-temperature and high-humidity tolerance in pepper
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|c 2015
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 30.03.2016
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|a Date Revised 08.04.2022
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|a published: Print-Electronic
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|a GENBANK: KF736800
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|a Citation Status MEDLINE
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|a © The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.
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|a High temperature (HT), high humidity (HH), and pathogen infection often co-occur and negatively affect plant growth. However, these stress factors and plant responses are generally studied in isolation. The mechanisms of synergistic responses to combined stresses are poorly understood. We isolated the subgroup IIb WRKY family member CaWRKY6 from Capsicum annuum and performed quantitative real-time PCR analysis. CaWRKY6 expression was upregulated by individual or simultaneous treatment with HT, HH, combined HT and HH (HTHH), and Ralstonia solanacearum inoculation, and responded to exogenous application of jasmonic acid (JA), ethephon, and abscisic acid (ABA). Virus-induced gene silencing of CaWRKY6 enhanced pepper plant susceptibility to R. solanacearum and HTHH, and downregulated the hypersensitive response (HR), JA-, ethylene (ET)-, and ABA-induced marker gene expression, and thermotolerance-associated expression of CaHSP24, ER-small CaSHP, and Chl-small CaHSP. CaWRKY6 overexpression in pepper attenuated the HTHH-induced suppression of resistance to R. solanacearum infection. CaWRKY6 bound to and activated the CaWRKY40 promoter in planta, which is a pepper WRKY that regulates heat-stress tolerance and R. solanacearum resistance. CaWRKY40 silencing significantly blocked HR-induced cell death and reduced transcriptional expression of CaWRKY40. These data suggest that CaWRKY6 is a positive regulator of R. solanacearum resistance and heat-stress tolerance, which occurs in part by activating CaWRKY40
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a CaWRKY6
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|a Capsicum annuum
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|a Ralstonia solanacearum.
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|a high temperature and high humidity
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|a Cyclopentanes
|2 NLM
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|a Ethylenes
|2 NLM
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|a Organophosphorus Compounds
|2 NLM
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|a Oxylipins
|2 NLM
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|a Plant Growth Regulators
|2 NLM
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|a Plant Proteins
|2 NLM
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|a Transcription Factors
|2 NLM
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|a jasmonic acid
|2 NLM
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|a 6RI5N05OWW
|2 NLM
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|a Abscisic Acid
|2 NLM
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|a 72S9A8J5GW
|2 NLM
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|a ethylene
|2 NLM
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|a 91GW059KN7
|2 NLM
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|a ethephon
|2 NLM
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|a XU5R5VQ87S
|2 NLM
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|a Yang, Sheng
|e verfasserin
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|a Yan, Yan
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|a Xiao, Zhuoli
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|a Cheng, Junbin
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|a Wu, Ji
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|a Qiu, Ailian
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|a Lai, Yan
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|a Mou, Shaoliang
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|a Guan, Deyi
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|a Huang, Ronghua
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|a He, Shuilin
|e verfasserin
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 66(2015), 11 vom: 14. Juni, Seite 3163-74
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:66
|g year:2015
|g number:11
|g day:14
|g month:06
|g pages:3163-74
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|u http://dx.doi.org/10.1093/jxb/erv125
|3 Volltext
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|d 66
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|e 11
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|h 3163-74
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