Responses of barley Albina and Xantha mutants deficient in magnesium chelatase to soil salinity

Zhiyu Zuo, Xiangnan Li, Chao Xu, Junjie Yang, Xiancan Zhu, Shengqun Liu, Fengbin Song, Fulai Liu and Hanping Mao
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Zhiyu Zuo: Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/High-tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, School of Agricultural Equipment and Engineering, Jiangsu University, Zhenjiang, P.R. China
Xiangnan Li: Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, P.R. China
Chao Xu: Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/High-tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, School of Agricultural Equipment and Engineering, Jiangsu University, Zhenjiang, P.R. China
Junjie Yang: Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/High-tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, School of Agricultural Equipment and Engineering, Jiangsu University, Zhenjiang, P.R. China
Xiancan Zhu: Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, P.R. China
Shengqun Liu: Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, P.R. China
Fengbin Song: Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, P.R. China
Fulai Liu: Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Taastrup, Denmark
Hanping Mao: Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education/High-tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, School of Agricultural Equipment and Engineering, Jiangsu University, Zhenjiang, P.R. China

Plant, Soil and Environment, 2017, vol. 63, issue 8, 348-354

Abstract: Soil salinity reduces the plant growth and grain yield in barley. The barley mutants Albina and Xantha, deficient in magnesium chelatase, represent a suitable model object for analysis of the roles of chloroplast in salt stress response. Spring barley (Hordeum vulgare cv. Svalofs Bonus) and four nonallelic Albina (alb-e16 and alb-f17) and Xantha (xan-s46 and xan-b12) mutants were used to investigate the effects of soil salinity on physiological traits of plants. Under salt stress, larger reduction in stomatal conductance and higher Na concentration was found in Albina and Xantha mutants compared with wild type (WT). In addition, the Albina and Xantha mutants had lower capacity of reactive oxygen species (ROS) scavenging while higher ROS generation rate compared with WT, exposed to soil salinity. Therefore, the limitations in chloroplast development affected Na+/K+ homeostasis and decreased the oxygen scavenging capacity, hence affecting the salt tolerance in barley.

Keywords: stress condition; ion toxicity; chlorophyll biosynthesis; sugars (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:63:y:2017:i:8:id:329-2017-pse

DOI: 10.17221/329/2017-PSE

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