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Analysis of Banana MaASR1 Gene Expression Profiles in Arabidopsis Under Drought Stress |
ZHANG Li-li1, XU Bi-yu1, LIU Ju-hua1, JIA Cai-hong1, ZHANG Jian-bin1, JIN Zhi-qiang1,2 |
1. Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Haikou 571101, China; 2. Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences/Hainan Provincial Key Laboratory for Genetics and Breeding of Banana, Haikou 570102, China |
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Abstract Drought is the most important environmental stress. MaASR1 gene of banana plays an important role in plant responding to stress. In order to further study the molecular mechanism of drought resistance for over expressing MaASR1 gene in Arabidopsis thaliana. DNA microarray was used to broad-spectrum screening the differentially expressed genes under natural and drought treatment in wild-type Arabidopsis thaliana and transgenic lines. The results of the DNA microarray were analyzed by bioinformatics and RT-PCR verification of the related genes. The results showed that when the wild-type Arabidopsis thaliana and transgenic lines were all without any treatment, there was a total of 747 differentially expressed genes, including 559 up-regulated genes and 188 down-regulated genes. And when the wild-type Arabidopsis thaliana and transgenic lines were all drought-treated, there was a total of 653 differentially expressed genes, including 256 up-regulated genes and 397 down-regulated genes. MaASR1 gene can increase the drought resistance of Arabidopsis thaliana by affecting the expression of hormone, photosynthesis, zinc finger protein and DREB2A which involved in the ABA-independent pathway. And to lay the foundation for the molecular mechanism of MaASR1 gene as a transcription factor to improve plant drought resistance.
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Received: 14 August 2017
Published: 15 November 2017
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