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Stress‐responsive accumulation of plastid chaperonin 60 during seedling development
Author(s) -
Holland Neta,
Belkind Anna,
Holland Doron,
Pick Uri,
Edelman Marvin
Publication year - 1998
Publication title -
the plant journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.058
H-Index - 269
eISSN - 1365-313X
pISSN - 0960-7412
DOI - 10.1046/j.1365-313x.1998.00028.x
Subject(s) - plastid , chaperonin , seedling , chloroplast , biology , botany , protein folding , chaperone (clinical) , microbiology and biotechnology , biochemistry , gene , medicine , pathology
Summary Plastid chaperonin 60 (cpn60) is a chloroplast protein, presumed to assist in assembly and folding of plastid proteins. Although molecular chaperones often accumulate significantly in response to stress, this has never been demonstrated for cpn60. In this study, the accumulation of cpn60 in Nicotiana seedlings during their development was followed under different stress conditions. It was found that cpn60 accumulates markedly in developing seedlings in response to tentoxin and several other (but not all) stresses. Cpn60 accumulates only during a narrow period of seedling development. It is proposed that cpn60 accumulation under stress is developmentally regulated.