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The abundance of a single domain cyclophilin in Solanaceae is regulated as a function of organ type and high temperature and not by other environmental constraints
Author(s) -
KiełbowiczMatuk Agnieszka,
Rey Pascal,
Rorat Tadeusz
Publication year - 2007
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.2007.00968.x
Subject(s) - solanaceae , abundance (ecology) , function (biology) , domain (mathematical analysis) , cyclophilin , biology , botany , cyclophilin a , ecology , microbiology and biotechnology , biochemistry , mathematics , mathematical analysis , gene
The abundance of a single domain cyclophilin (CyP), designated as Ss CyP, was investigated in Solanum sogarandinum and Solanum tuberosum plants during development and in response to various environmental constraints. We show that under control conditions, Ss CyP is distributed throughout the plant but in an organ‐specific manner. In both Solanum species, the highest protein levels are observed in transporting organs and in tubers, and substantial amounts are noticed in open flowers and in stamens. We also show that the Ss CyP abundance in leaves strongly decreases with age. In in vitro‐grown plantlets of S. sogarandinum , the SsCyP gene is induced by low temperature at the transcript level but not at the protein level, indicating that post‐transcriptional mechanisms control SsCyP expression under cold conditions. In in vivo‐grown Solanum plants, the organ‐dependent Ss CyP protein distribution and abundance are not modified by cold, drought, salinity and photooxidative treatments. In contrast, the protein abundance substantially decreases in all organs of Solanum plants subjected to heat shock. We conclude that the Ss CyP protein acts mainly during development and does not belong to the group of stress‐induced CyPs.