Overexpression of a Multiprotein Bridging Factor 1 Gene DgMBF1 Improves the Salinity Tolerance of Chrysanthemum.
作者： Qian Zhao , Ling He , Bei Wang , Qinglin Liu , Yuanzhi Pan
DOI: 10.3390/IJMS20102453
关键词:
摘要: Soil salinity represents a major constraint in the growth of chrysanthemum. Therefore, improving tolerance chrysanthemum has become an important research direction breeding. Multiprotein bridging factor 1 (MBF1) is evolutionarily highly conserved transcriptional co-activator archaea and eukaryotes been reported to play roles respond abiotic stresses. Here, MBF1 gene induced by salt stress was isolated functionally characterized from Dendranthema grandiflorum name as DgMBF1. Overexpression DgMBF1 increased plants high compared wild type (WT). It also showed fewer accumulations hydrogen peroxide (H2O2), superoxide anion (O2−), higher activities antioxidant enzymes, more content proline soluble sugar (SS) favorable K+/Na+ ratio than those WT under stress. In addition, expression level genes related biosynthesis, glyco-metabolism homeostasis statistically significant DgMBF1-overexpressed lines that WT. These results demonstrated positive regulator response could serve new candidate for salt-tolerant plant
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