Metallothionein 2 (SaMT2) from Sedum alfredii Hance confers increased Cd tolerance and accumulation in yeast and tobacco.
Metallothionein 2 (SaMT2) from Sedum alfredii Hance confers increased Cd tolerance and accumulation in yeast and tobacco.
复制标题
来自景天的金属硫蛋白 2 (SaMT2) 提高酵母和烟草中的镉耐受性和积累
DOI:
10.1371/journal.pone.0102750
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Yang X
中科院分区:
文献类型:
--
作者:
Zhang J;Zhang M;Tian S;Lu L;Shohag MJ;Yang X
Metallothioneins are cysteine-rich metal-binding proteins. In the present study, SaMT2, a type 2 metallothionein gene, was isolated from Cd/Zn co-hyperaccumulator Sedum alfredii Hance. SaMT2 encodes a putative peptide of 79 amino acid residues including two cysteine-rich domains. The transcript level of SaMT2 was higher in shoots than in roots of S. alfredii, and was significantly induced by Cd and Zn treatments. Yeast expression assay showed SaMT2 significantly enhanced Cd tolerance and accumulation in yeast. Ectopic expression of SaMT2 in tobacco enhanced Cd and Zn tolerance and accumulation in both shoots and roots of the transgenic plants. The transgenic plants had higher antioxidant enzyme activities and accumulated less H2O2 than wild-type plants under Cd and Zn treatment. Thus, SaMT2 could significantly enhance Cd and Zn tolerance and accumulation in transgenic tobacco plants by chelating metals and improving antioxidant system.
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影响因子:
14.8
作者:
Gietz, R. Daniel;Schiestl, Robert H.
通讯作者:
Schiestl, Robert H.
影响因子:
6.5
作者:
Kim, Yeon-Ok;Jung, Sera;Bae, Hyeun-Jong
通讯作者:
Bae, Hyeun-Jong
影响因子:
5.1
作者:
Hsieh, HM;Liu, WK;Huang, PC
通讯作者:
Huang, PC
影响因子:
5.7
作者:
Sekhar, K.;Priyanka, B.;Rao, K. V.
通讯作者:
Rao, K. V.
影响因子:
5.1
作者:
HSIEH, HM;LIU, WK;HUANG, PC
通讯作者:
HUANG, PC