Identification and functional analysis of mitogen-activated protein kinase kinase kinase (MAPKKK) genes in canola (Brassica napus L.)

Mitogen-activated protein kinase (MAPK) signalling cascades, consisting of three types of reversibly phosphorylated kinases (MAPKKK, MAPKK, and MAPK), are involved in important processes including plant immunity and hormone responses. The MAPKKKs comprise the largest family in the MAPK cascades, yet...

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Veröffentlicht in:Journal of experimental botany. - 1985. - 65(2014), 8 vom: 01. Mai, Seite 2171-88
1. Verfasser: Sun, Yun (VerfasserIn)
Weitere Verfasser: Wang, Chen, Yang, Bo, Wu, Feifei, Hao, Xueyu, Liang, Wanwan, Niu, Fangfang, Yan, Jingli, Zhang, Hanfeng, Wang, Boya, Deyholos, Michael K, Jiang, Yuan-Qing
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Journal of experimental botany
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Abiotic stress Brassica napus MAPKKK MKK Sclerotinia sclerotiorum. cell death DNA, Complementary Plant Proteins mehr... MAP Kinase Kinase Kinases EC 2.7.11.25
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245 1 0 |a Identification and functional analysis of mitogen-activated protein kinase kinase kinase (MAPKKK) genes in canola (Brassica napus L.) 
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500 |a Date Revised 21.10.2021 
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520 |a Mitogen-activated protein kinase (MAPK) signalling cascades, consisting of three types of reversibly phosphorylated kinases (MAPKKK, MAPKK, and MAPK), are involved in important processes including plant immunity and hormone responses. The MAPKKKs comprise the largest family in the MAPK cascades, yet only a few of these genes have been associated with physiological functions, even in the model plant Arabidopsis thaliana. Canola (Brassica napus L.) is one of the most important oilseed crops in China and worldwide. To explore MAPKKK functions in biotic and abiotic stress responses in canola, 66 MAPKKK genes were identified and 28 of them were cloned. Phylogenetic analysis of these canola MAPKKKs with homologous genes from representative species classified them into three groups (A-C), comprising four MAPKKKs, seven ZIKs, and 17 Raf genes. A further 15 interaction pairs between these MAPKKKs and the downstream BnaMKKs were identified through a yeast two-hybrid assay. The interactions were further validated through bimolecular fluorescence complementation (BiFC) analysis. In addition, by quantitative real-time reverse transcription-PCR, it was further observed that some of these BnaMAPKKK genes were regulated by different hormone stimuli, abiotic stresses, or fungal pathogen treatments. Interestingly, two novel BnaMAPKKK genes, BnaMAPKKK18 and BnaMAPKKK19, which could elicit hypersensitive response (HR)-like cell death when transiently expressed in Nicotiana benthamiana leaves, were successfully identified. Moreover, it was found that BnaMAPKKK19 probably mediated cell death through BnaMKK9. Overall, the present work has laid the foundation for further characterization of this important MAPKKK gene family in canola 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Abiotic stress 
650 4 |a Brassica napus 
650 4 |a MAPKKK 
650 4 |a MKK 
650 4 |a Sclerotinia sclerotiorum. 
650 4 |a cell death 
650 7 |a DNA, Complementary  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a MAP Kinase Kinase Kinases  |2 NLM 
650 7 |a EC 2.7.11.25  |2 NLM 
700 1 |a Wang, Chen  |e verfasserin  |4 aut 
700 1 |a Yang, Bo  |e verfasserin  |4 aut 
700 1 |a Wu, Feifei  |e verfasserin  |4 aut 
700 1 |a Hao, Xueyu  |e verfasserin  |4 aut 
700 1 |a Liang, Wanwan  |e verfasserin  |4 aut 
700 1 |a Niu, Fangfang  |e verfasserin  |4 aut 
700 1 |a Yan, Jingli  |e verfasserin  |4 aut 
700 1 |a Zhang, Hanfeng  |e verfasserin  |4 aut 
700 1 |a Wang, Boya  |e verfasserin  |4 aut 
700 1 |a Deyholos, Michael K  |e verfasserin  |4 aut 
700 1 |a Jiang, Yuan-Qing  |e verfasserin  |4 aut 
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