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Int. J. Mol. Sci. 2016, 17(6), 804; doi:10.3390/ijms17060804

A Chloroplast-Localized Rubredoxin Family Protein Gene from Puccinellia tenuiflora (PutRUB) Increases NaCl and NaHCO3 Tolerance by Decreasing H2O2 Accumulation

Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin Hexing Road, Harbin 150040, China
Asian Natural Environmental Science Center, University of Tokyo, Nishitokyo-shi, Tokyo 188-0002, Japan
Author to whom correspondence should be addressed.
Academic Editor: Setsuko Komatsu
Received: 22 April 2016 / Revised: 13 May 2016 / Accepted: 18 May 2016 / Published: 30 May 2016
(This article belongs to the Section Molecular Botany)
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Rubredoxin is one of the simplest iron–sulfur (Fe–S) proteins. It is found primarily in strict anaerobic bacteria and acts as a mediator of electron transfer participation in different biochemical reactions. The PutRUB gene encoding a chloroplast-localized rubredoxin family protein was screened from a yeast full-length cDNA library of Puccinellia tenuiflora under NaCl and NaHCO3 stress. We found that PutRUB expression was induced by abiotic stresses such as NaCl, NaHCO3, CuCl2 and H2O2. These findings suggested that PutRUB might be involved in plant responses to adversity. In order to study the function of this gene, we analyzed the phenotypic and physiological characteristics of PutRUB transgenic plants treated with NaCl and NaHCO3. The results showed that PutRUB overexpression inhibited H2O2 accumulation, and enhanced transgenic plant adaptability to NaCl and NaHCO3 stresses. This indicated PutRUB might be involved in maintaining normal electron transfer to reduce reactive oxygen species (ROS) accumulation. View Full-Text
Keywords: rubredoxin family protein; Puccinellia tenuiflora; ROS rubredoxin family protein; Puccinellia tenuiflora; ROS

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, Y.; Liu, P.; Takano, T.; Liu, S. A Chloroplast-Localized Rubredoxin Family Protein Gene from Puccinellia tenuiflora (PutRUB) Increases NaCl and NaHCO3 Tolerance by Decreasing H2O2 Accumulation. Int. J. Mol. Sci. 2016, 17, 804.

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