PtoMPO1, a negative mediator, functions in poplar drought tolerance

编号 040036704

推送时间 20221031

研究领域 森林培育 

年份 2022 

类型 期刊 

语种 英语

标题 PtoMPO1, a negative mediator, functions in poplar drought tolerance

来源期刊 Plant Physiology and Biochemistry

期 第367期

发表时间 20220910

关键词 AtMHP1;  Drought stress;  Poplar;  PtoMPO1; 

摘要 Drought, as one of the most severe abiotic stresses in nature, adversely affects plant growth and development. Poplar is a woody plant which is prone to water-deficit sensitivity. Therefore, it is important to improve our understanding of how poplar responds to drought stress. Here, we cloned a gene from Populus tomentosa was a T-DNA insertion mutant lacking AtMHP1, and heteroexpression of PtoMPO1 in Atmhp1-1 significantly alleviated the sensitivity of Atmhp1-1 to ABA and NaCl, implying the functional replacement of PtoMPO1 to AtMHP1. PtoMPO1 overexpression decreased but PtoMPO1 mutation enhanced poplar drought tolerance. Furthermore, the expression of drought-related gene PtoRD26 is markedly lower in PtoMPO1-overexpressing plants and notably higher in Ptompo1 mutants compared to that in the wild type. Overall, these results suggested that PtoMPO1 functions as a novel negative mediator for drought tolerance in poplar.

服务人员 孙小满

服务院士 尹伟伦

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