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Divergent evolutionary patterns of the MAPK cascade genes in Brassica rapa and plant phylogenetics.


ABSTRACT: Mitogen-activated protein kinase (MAPK) cascade signal transduction modules play crucial roles in regulating many biological processes in plants. These cascades are composed of three classes of hierarchically organized protein kinases, MAPKKKs, MAPKKs and MAPKs. Here, we analyzed gene retention, phylogenetic, evolution and expression patterns of MAPK cascade genes in Brassica rapa. We further found that the MAPK branches, classes III and IV, appeared after the split of bryophytes and green algae after analyzing the MAPK cascade genes in 8 species, and their rapid expansion led to the great size of the families of MAPKs. In contrast, the ancestral class I subfamily of MAPKK gene families have been highly conserved from algae to angiosperms. For the MAPKKK family, the MEKK and Raf subfamily share a common evolutionary origin, and Raf plays a major role in the expansion of the MAPKKK gene family. The cis-elements and interaction network analyses showed the important function of MAPK cascade genes in development and stress responses in B. rapa. This study provides a solid foundation for molecular evolution analyses of MAPK cascade genes.

SUBMITTER: Wu P 

PROVIDER: S-EPMC5744264 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Divergent evolutionary patterns of the MAPK cascade genes in <i>Brassica rapa</i> and plant phylogenetics.

Wu Peng P   Wang Wenli W   Li Ying Y   Hou Xilin X  

Horticulture research 20171227


Mitogen-activated protein kinase (MAPK) cascade signal transduction modules play crucial roles in regulating many biological processes in plants. These cascades are composed of three classes of hierarchically organized protein kinases, MAPKKKs, MAPKKs and MAPKs. Here, we analyzed gene retention, phylogenetic, evolution and expression patterns of MAPK cascade genes in <i>Brassica rapa</i>. We further found that the MAPK branches, classes III and IV, appeared after the split of bryophytes and gree  ...[more]

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