Premium
Reduction in cab and psb A RNA transcripts in response to supplementary ultraviolet‐B radiation
Author(s) -
Jordan Brian R.,
Chow W.S.,
Strid Åke,
Anderson Jan M.
Publication year - 1991
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(91)80748-r
Subject(s) - pisum , sativum , rna , biology , gene expression , messenger rna , ultraviolet b , microbiology and biotechnology , gene , andrology , chemistry , biochemistry , botany , medicine , dermatology
The cab and psb A RNA transcript levels have been determined in Pisum sativum leaves exposed to supplementary ultraviolet‐B radiation. The nuclear‐encoded cab transcripts are reduced to low levels after only 4 h of UV‐B treatment and are undetectable after 3 days exposure. In contrast, the chloroplast‐encoded psb A transcript levels, although reduced, are present for at least 3 days. After short periods of UV‐B exposure (4 h or 8 h), followed by recovery under control conditions, cab RNA transcript levels had not recovered after 1 day, but were re‐established to ca. 60% of control levels after 2 more days. Increased irradiance during exposure to UV‐B reduced the effect upon cab transcripts, although the decrease was still substantial. These results indicate rapid changes in the cellular regulation of gene expression in response to supplementary UV‐B and suggest increased UV‐B radiation may have profound consequences for future productivity of sensitive crop species.