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Chloroplast development in Arabidopsis thaliana requires the nuclear‐encoded transcription factor Sigma B
Author(s) -
Shirano Yumiko,
Shimada Hiroshi,
Kanamaru Kengo,
Fujiwara Makoto,
Tanaka Kan,
Takahashi Hideo,
Unno Kazutoshi,
Sato Shuusei,
Tabata Satoshi,
Hayashi Hiroaki,
Miyake Chikahiro,
Yokota Akiho,
Shibata Daisuke
Publication year - 2000
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/s0014-5793(00)02216-x
Subject(s) - plastid , biology , nuclear gene , chloroplast , arabidopsis thaliana , gene , sigma factor , genome , mutant , genetics , arabidopsis , microbiology and biotechnology , organelle , rna polymerase , transcription factor , rna
Development of plastids into chloroplasts, the organelles of photosynthesis, is triggered by light. However, little is known of the factors involved in the complex coordination of light‐induced plastid gene expression, which must be directed by both nuclear and plastid genomes. We have isolated an Arabidopsis mutant, abc1 , with impaired chloroplast development, which results in a pale green leaf phenotype. The mutated nuclear gene encodes a sigma factor, SigB, presumably for the eubacterial‐like plastid RNA polymerase. Our results provide direct evidence that a nuclear‐derived prokaryotic‐like SigB protein, plays a critical role in the coordination of the two genomes for chloroplast development.