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Cyclophilin Participates in Responding to Stress Situations in Porphyra haitanensis (Bangiales, Rhodophyta)
Author(s) -
Jia Zhaojun,
Niu Jianfeng,
Huan Li,
Wu Xiaojie,
Wang Guangce,
Hou Zhaojun
Publication year - 2013
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.2012.01234.x
Subject(s) - gametophyte , biology , porphyra , cyclophilin , sporophyte , botany , pin1 , stress (linguistics) , gene , algae , microbiology and biotechnology , genetics , pollen , isomerase , linguistics , philosophy
Porphyra haitanensis (T. J. Chang & B. F. Zheng) is an important economic alga found off the southern coast of China. It has evolved a strong tolerance against stress, which is an important survival characteristic. Cyclophilin has been shown to be involved in the stress response of plants and algae. To investigate the tolerance against stress in Porphyra , we isolated the cyclophilin Ph CYP 18 gene (Accession number JQ413239 ) and measured its expression over different generations and stress conditions. In P. haitanensis , cyclophilin Ph CYP 18 accumulated more in the filamentous sporophyte generation than in the blade gametophyte generation. This difference was thought to be due to harsh environments and a gene dosage effect. It has been found, however, that Ph CYP 18 expression was dysregulated in blades under high salt stress, strong irradiance stress and multifactorial stress compared to blades under normal conditions. Moreover, the changes were not linearly related to the degree of stress. It was therefore thought that Ph CYP 18 actively responded to stress situations and induced strong stress tolerance, which is evident in P. haitanensis .