MdbHLH93, an apple activator regulating leaf senescence, is regulated by ABA and MdBT2 in antagonistic ways

© 2018 Shandong Agricultural University New Phytologist © 2018 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 222(2019), 2 vom: 01. Apr., Seite 735-751
1. Verfasser: An, Jian-Ping (VerfasserIn)
Weitere Verfasser: Zhang, Xiao-Wei, Bi, Si-Qi, You, Chun-Xiang, Wang, Xiao-Fei, Hao, Yu-Jin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't MdBT2 MdbHLH93 abscisic acid (ABA) apple bHLH transcription factor leaf senescence ubiquitination Plant Growth Regulators mehr... Plant Proteins RNA, Messenger Chlorophyll 1406-65-1 Abscisic Acid 72S9A8J5GW
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520 |a The molecular mechanism of leaf senescence in apple (Malus domestica) is still not fully understood. We used gene expression analysis and protein-protein interactions to decipher the relationships of abscisic acid (ABA) and two proteins, MdbHLH93 and MdBT2, in the senescence process. We found that MdbHLH93 promoted leaf senescence and the expression of senescence-related genes, which exhibited similar effects to ABA on leaf senescence. MdbHLH93 activated directly the transcription of MdSAG18. We also found that an ABA-responsive protein, MdBT2, interacted directly with MdbHLH93, and induced the ubiquitination and degradation of the MdbHLH93 protein, and thus delayed leaf senescence. Our findings provide new insights into the regulatory network of leaf senescence through the functional interactions among ABA, MdbHLH93 and MdBT2 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a MdBT2 
650 4 |a MdbHLH93 
650 4 |a abscisic acid (ABA) 
650 4 |a apple 
650 4 |a bHLH transcription factor 
650 4 |a leaf senescence 
650 4 |a ubiquitination 
650 7 |a Plant Growth Regulators  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a RNA, Messenger  |2 NLM 
650 7 |a Chlorophyll  |2 NLM 
650 7 |a 1406-65-1  |2 NLM 
650 7 |a Abscisic Acid  |2 NLM 
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700 1 |a Zhang, Xiao-Wei  |e verfasserin  |4 aut 
700 1 |a Bi, Si-Qi  |e verfasserin  |4 aut 
700 1 |a You, Chun-Xiang  |e verfasserin  |4 aut 
700 1 |a Wang, Xiao-Fei  |e verfasserin  |4 aut 
700 1 |a Hao, Yu-Jin  |e verfasserin  |4 aut 
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773 1 8 |g volume:222  |g year:2019  |g number:2  |g day:01  |g month:04  |g pages:735-751 
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