| Literature DB >> 30833710 |
Shuai Zhang1, Ming Feng1, Wen Chen2, Xiaofeng Zhou1, Jingyun Lu1, Yaru Wang1, Yonghong Li3, Cai-Zhong Jiang4,5, Su-Sheng Gan6, Nan Ma7, Junping Gao8.
Abstract
Plants have evolved sophisticated systems in response to environmental changes, and growth arrest is a common strategy used to enhance stress tolerance. Despite the growth-survival trade-off being essential to the shaping of plant productivity, the mechanisms balancing growth and survival remain largely unknown. Aquaporins play a crucial role in growth and stress responses by controlling water transport across membranes. Here, we show that RhPIP2;1, an aquaporin from rose (Rosa sp.), interacts with a membrane-tethered MYB protein, RhPTM. Water deficiency triggers nuclear translocation of the RhPTM C terminus. Silencing of RhPTM causes continuous growth under drought stress and a consequent decrease in survival rate. RNA sequencing (RNA-seq) indicated that RhPTM influences the expression of genes related to carbohydrate metabolism. Water deficiency induces phosphorylation of RhPIP2;1 at Ser 273, which is sufficient to promote nuclear translocation of the RhPTM C terminus. These results indicate that the RhPIP2;1-RhPTM module serves as a key player in orchestrating the trade-off between growth and stress survival in Rosa.Entities:
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Year: 2019 PMID： 30833710 DOI： 10.1038/s41477-019-0376-1
Source DB: PubMed Journal: Nat Plants ISSN： 2055-0278 Impact factor: 15.793