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PpMAPK6 regulates peach bud endodormancy release through interactions with ppdam6

Journal of Integrative Agriculture 2023年第1期22卷 139-148页

作者： ZHANG Yu-zheng XU Chen LU Wen-li WANG Xiao-zhe WANG Ning MENG Xiang-guang FANG Yu-hui TAN Qiu-ping CHEN Xiu-de FU Xi-ling LI Ling College of Horticultural Science and Engineering Shandong Agricultural UniversityTai’an 271018P.R.China State Key Laboratory of Crop Biology Shandong Agricultural UniversityTai’an 271018P.R.China Shandong Collaborative Innovation Center for Fruit&Vegetable Production with High Quality and Efficiency Tai’an 271018P.R.China

The MADS-box(DAM)gene ppdam6,which is related to dormancy,plays a key role in bud endodormancy release,and the expression of ppdam6 decreases during endodormancy ***,the interaction network that governs its regulation of the endodormancy release of flower buds in peach remains *** this study,we used yeast two-hybrid(Y2H)assays to identify a mitogen-activated protein kinase,PpMAPK6,that interacts with ppdam6 in a peach dormancy-associated SSHcDNA ***6 is primarily located in the nucleus,and Y2H and bimolecular fluorescence complementation(BiFC)assays verified that PpMAPK6 interacts with ppdam6 by binding to the MADS-box domain of *** real-time PCR(qRT-PCR)analysis showed that the expression of PpMAPK6 was opposite that of ppdam6 in the endodormancy release of three cultivars with different chilling requirements(Prunus persica‘Chunjie’,Prunus persica ***‘Zhongyou 5’,Prunus persica‘Qingzhou peach’).In addition,abscisic acid(ABA)inhibited the expression of PpMAPK6 and promoted the expression of ppdam6 in flower *** results indicated that PpMAPK6 might phosphorylate ppdam6 to accelerate its degradation by interacting with *** expression of PpMAPK6 increased with decreasing ABA content during endodormancy release in peach flower buds,which in turn decreased the expression of ppdam6 and promoted endodormancy release.

关键词： peach endodormancy release ppdam6 PpMAPK6 ABA

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