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Complex gene response of herbicide-resistant Enterobacter strain NRS-1 under different glyphosate stresses.


ABSTRACT: Knowledge of biological evolution and genetic mechanisms is gained by studying the adaptation of bacteria to survive in adverse environmental conditions. In this regard, transcriptomic profiling of a glyphosate-tolerant Enterobacter strain NRS-1 was studied under four different treatments to investigate the gene-regulatory system for glyphosate tolerance. A total of 83, 83, 60 and 74 genes were up-regulated and 108, 87, 178 and 117 genes down-regulated under 60-NPG, 110-NPG, NaCl (355 mM) and HCl (pH 4.46) stress treatments, respectively. Complex gene network was identified to be involved in regulating tolerance to glyphosate. This study revealed that NRS-1 has gained glyphosate tolerance at the cost of osmotic and acidic resistance. The 25 differentially expressed genes are reported to may have partly changed the function for providing resistance to glyphosate directly, among them genes metK, mtbK, fdnG and wzb that might detoxify/degrade the glyphosate. However, under 110-NPG condition, NRS-1 might have utilized economical and efficient ways by depressing its metabolism and activity to pass through this stress. Hence, the present study provides insights into the genes involved in glyphosate tolerance, which can be effectively utilized to engineer herbicide-resistant crop varieties after their proper validation to manage weed growth.

SUBMITTER: Fei YY 

PROVIDER: S-EPMC6160373 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Complex gene response of herbicide-resistant <i>Enterobacter</i> strain <i>NRS-1</i> under different glyphosate stresses.

Fei Yun-Yan YY   Bhat Javaid Akhter JA   Zhang Ying-Ying YY   Al Amin G M GM   Gai Jun-Yi JY   Zhao Tuan-Jie TJ  

3 Biotech 20180927 10


Knowledge of biological evolution and genetic mechanisms is gained by studying the adaptation of bacteria to survive in adverse environmental conditions. In this regard, transcriptomic profiling of a glyphosate-tolerant <i>Enterobacter</i> strain <i>NRS-1</i> was studied under four different treatments to investigate the gene-regulatory system for glyphosate tolerance. A total of 83, 83, 60 and 74 genes were up-regulated and 108, 87, 178 and 117 genes down-regulated under 60-NPG, 110-NPG, NaCl (  ...[more]

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