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- Title
A C2H2-Type Zinc-Finger Protein from Millettia pinnata , MpZFP1, Enhances Salt Tolerance in Transgenic Arabidopsis.
- Authors
Yu, Zhonghua; Yan, Hao; Liang, Ling; Zhang, Yi; Yang, Heng; Li, Wei; Choi, Jaehyuck; Huang, Jianzi; Deng, Shulin
- Abstract
C2H2 zinc finger proteins (ZFPs) play important roles in plant development and response to abiotic stresses, and have been studied extensively. However, there are few studies on ZFPs in mangroves and mangrove associates, which represent a unique plant community with robust stress tolerance. MpZFP1, which is highly induced by salt stress in the mangrove associate Millettia pinnata, was cloned and functionally characterized in this study. MpZFP1 protein contains two zinc finger domains with conserved QALGGH motifs and targets to the nucleus. The heterologous expression of MpZFP1 in Arabidopsis increased the seeds' germination rate, seedling survival rate, and biomass accumulation under salt stress. The transgenic plants also increased the expression of stress-responsive genes, including RD22 and RD29A, and reduced the accumulation of reactive oxygen species (ROS). These results indicate that MpZFP1 is a positive regulator of plant responses to salt stress due to its activation of gene expression and efficient scavenging of ROS.
- Subjects
ZINC-finger proteins; MILLETTIA pinnata; MANGROVE plants; SURVIVAL rate; REACTIVE oxygen species; GENETIC regulation; ARABIDOPSIS
- Publication
International Journal of Molecular Sciences, 2021, Vol 22, Issue 19, p10832
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms221910832