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27 March 2018 Genome-wide identification and expression analysis of the OSCA gene family in Pyrus bretschneideri
Xiaoyu Gu, Peng Wang, Zhe Liu, Li Wang, Zhi Huang, Shaoling Zhang, Juyou Wu
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Abstract

Responses to osmotic change are critical for plant survival, development, and reproduction. Hyperosmolality-induced cytosolic free calcium concentration [(Ca2+)i] increase (OSCAs) proteins have been described as osmosensors in plants and animals. To investigate functional roles of OSCA genes (PbrOSCAs) in pear (Pyrus bretschneideri Rehd.), bioinformatics, and expression analyses of the PbrOSCAs were performed. Sixteen PbrOSCA members were identified in the pear genome. PbrOSCA family members were classified into four clades by sequence alignment and phylogenetic analysis. Moreover, protein structure analysis indicated that the 16 PbrOSCA members shared similar structures with their homologues in Arabidopsis and rice. Multi-transmembrane patterns and ion transport pore sites of PbrOSCAs were conserved, and expression profiles of PbrOSCA varied among tissues and with osmotic stress conditions. In particular, expression levels of six PbrOSCAs gradually increased with time during osmotic stress, suggesting that PbrOSCAs may play regulatory roles in plant osmotic stress responses.

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Xiaoyu Gu, Peng Wang, Zhe Liu, Li Wang, Zhi Huang, Shaoling Zhang, and Juyou Wu "Genome-wide identification and expression analysis of the OSCA gene family in Pyrus bretschneideri," Canadian Journal of Plant Science 98(4), 918-929, (27 March 2018). https://doi.org/10.1139/cjps-2017-0115
Received: 9 April 2017; Accepted: 22 January 2018; Published: 27 March 2018
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KEYWORDS
Ca2+-permeable channel
OSCA
Osmotic stress
pear
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