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Functional analysis of PrkA - a putative serine protein kinase from Mesorhizobium alhagi CCNWXJ12-2 - in stress resistance

Overview of attention for article published in BMC Microbiology, September 2016
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Title
Functional analysis of PrkA - a putative serine protein kinase from Mesorhizobium alhagi CCNWXJ12-2 - in stress resistance
Published in
BMC Microbiology, September 2016
DOI 10.1186/s12866-016-0849-6
Pubmed ID
Authors

Xiaodong Liu, Yantao Luo, Zhefei Li, Gehong Wei

Abstract

Serine/threonine protein kinases are highly conserved kinases with a wide distribution in microbes and with multiple functions. Mesorhizobium alhagi CCNWXJ12-2, a α-proteobacterium which could be able to form symbiosis with Alhagi sparsifolia in northwest of China, contains a putative PrkA-family serine protein kinase, PrkA. In our previous study, the expression of prkA was found to be downregulated in high-salt conditions. To elucidate the function of M. alhagi PrkA, a prkA deletion mutant was constructed and the phenotypes of the mutant were analyzed. The salt and alkaline tolerance and antioxidant capacity of the wild-type strain and the prkA deletion mutant was measured. Our results showed that the deletion mutant had higher salt and alkaline tolerance than the wild-type strain. The total cellular Na(+) content was measured and showed no significant difference between the wild-type strain and the mutant. The prkA deletion mutant also showed a higher H2O2 tolerance than the wild-type strain. Therefore the activities of antioxidant enzymes were measured. Catalase activity was similar in the wild-type and the deletion mutant, while the superoxide dismutase activity in the mutant was higher than that in the wild-type. We firstly analyze the function of a serine protein kinase, PrkA, in M. alhagi. Our data indicate that PrkA could reduce the survival of M. alhagi under environmental stress and deletion of prkA dramatically improved the salt and alkaline tolerance and antioxidant capacity of M. alhagi.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 22 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 6 27%
Student > Ph. D. Student 5 23%
Researcher 3 14%
Student > Bachelor 1 5%
Student > Doctoral Student 1 5%
Other 1 5%
Unknown 5 23%
Readers by discipline Count As %
Agricultural and Biological Sciences 9 41%
Biochemistry, Genetics and Molecular Biology 3 14%
Environmental Science 2 9%
Social Sciences 1 5%
Unknown 7 32%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 06 October 2016.
All research outputs
#20,344,065
of 22,890,496 outputs
Outputs from BMC Microbiology
#2,695
of 3,197 outputs
Outputs of similar age
#279,777
of 322,600 outputs
Outputs of similar age from BMC Microbiology
#58
of 74 outputs
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