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- Title
Heavy-ion beam mutagenesis identified an essential gene for chloroplast development under cold stress conditions during both early growth and tillering stages in rice.
- Authors
Morita, Ryouhei; Nakagawa, Mayu; Takehisa, Hinako; Hayashi, Yoriko; Ichida, Hiroyuki; Usuda, Sachiko; Ichinose, Katsunori; Abe, Hiroshi; Shirakawa, Yuki; Sato, Tadashi; Fujiwara, Makoto T.; Itoh, Ryuuichi D.; Abe, Tomoko
- Abstract
We isolated acold sensitive virescent1(csv1) mutant from a rice (Oryza sativaL.) population mutagenized by carbon ion irradiation. The mutant exhibited chlorotic leaves during the early growth stages, and produced normal green leaves as it grew. The growth ofcsv1plants displayed sensitivity to low temperatures. In addition, the mutant plants that were transferred to low temperatures at the fifth leaf stage produced chlorotic leaves subsequently. Genetic and molecular analyses revealed translocation of a 13-kb genomic fragment that disrupted the causative gene (CSV1; LOC_Os05g34040).CSV1encodes a plastid-targeted oxidoreductase-like protein conserved among land plants, green algae, and cyanobacteria. Furthermore,CSV1transcripts were more abundant in immature than in mature leaves, and they did not markedly increase or decrease with temperature. Taken together, our results indicate thatCSV1supports chloroplast development under cold stress conditions, in both the early growth and tillering stages in rice. We isolated and characterized the rice virescent mutant csv1. The mutant showed low temperature sensitivity not only early growth stages but also the tillering stage.
- Subjects
RICE diseases &; pests; CYANOBACTERIAL proteins; MUTAGENICITY testing; GENETICS
- Publication
Bioscience, Biotechnology & Biochemistry, 2017, Vol 81, Issue 2, p271
- ISSN
0916-8451
- Publication type
Article
- DOI
10.1080/09168451.2016.1249452