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- Title
A Chrysanthemum Heat Shock Protein Confers Tolerance to Abiotic Stress.
- Authors
Aiping Song; Xirong Zhu; Fadi Chen; Haishun Gao; Jiafu Jiang; Sumei Chen
- Abstract
Heat shock proteins are associated with protection against various abiotic stresses. Here, the isolation of a chrysanthemum cDNA belonging to the HSP70 family is reported. The cDNA, designated CgHSP70, encodes a 647-residue polypeptide, of estimated molecular mass 70.90 kDa and pI 5.12. A sub-cellular localization assay indicated that the cDNA product is deposited in the cytoplasm and nucleus. The performance of Arabidopsis thaliana plants constitutively expressing CgHSP70 demonstrated that the gene enhances tolerance to heat, drought and salinity. When CgHSP70 was stably over-expressed in chrysanthemum, the plants showed an increased peroxidase (POD) activity, higher proline content and inhibited malondialdehyde (MDA) content. After heat stress, drought or salinity the transgenic plants were better able to recover, demonstrating CgHSP70 positive effect.
- Subjects
CHRYSANTHEMUMS; HEAT shock proteins; ABIOTIC stress; POLYPEPTIDES; ARABIDOPSIS thaliana; MALONDIALDEHYDE
- Publication
International Journal of Molecular Sciences, 2014, Vol 15, Issue 3, p5063
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms15035063