지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Low temperature stress is one of the major negative factors affecting vegetative and reproductive growth of rice. To better understand responses of rice plants to low temperature we analyzed transcriptome expression patterns in glumous flower of cold-tolerant japonica rice variety, Stejaree45, and cold-susceptible variety, HR19621-AC6 at booting stage under cold water irrigation. A total of 2,411 probes were differentially expressed by low temperature in glumous flowers of the two varieties. Some important genes involved in hormone biosynthesis showed variety-specific regulation. Expression of GA20ox3 and GA2ox, among the genes involved in GA biosynthesis, was regulated differentially in the two varieties. Among the genes involved in IAA biosynthesis, YUCCA1 and TAA1:1 showed variety-specific regulation. Among the genes involved in cytokinin biosynthsis and signaling, expression of LOG, HK1 and HK3 was significantly down-regulated only in the cold-susceptible variety. Among the genes involved in ABA biosynthesis, NSY and AAO3 were down-regulated only in the cold-tolerant variety. In general, genes involved in GA, IAA and cytokinin biosynthesis responded to cold temperature in such a way that capacity of those bioactive hormones is maintained at relatively higher levels under cold temperature in the cold-tolerant variety, which can help minimize cold stress imposed to developing reproductive organs in the cold-tolerant variety.
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참고문헌 (26)
참고문헌 신청
Andaya VC / 2006 / Fine mapping of the qCTS12 locus, a major QTL for seedling cold tolerance in rice / Theor. Appl. Genet 113 : 467 ~ 475
Ashikari M / / Cytokinin Oxidase Regulates Rice Grain Production / Science 309 (29) : 741 ~ 745
Chu C / 1989 / The relationship between ethylene biosynthesis and chilling tolerance in seedlings of rice (Oryza sativa L_) / Bot. Bull. Academia Sinica 30 : 263 ~ 273
Dall'Osto L / 2007 / Different roles of α- and β-branch xanthophylls in photosystem assembly and photoprotection / Biol. Chem 282 : 35056 ~ 35068
Garbero M / 2010 / Shortterm cold stress in two cultivars of Digitaria eriantha: effects on stress-related hormones and antioxidant defense system / Acta Physiol. Plant
Ashikari M / / Cytokinin Oxidase Regulates Rice Grain Production / Science 309 (29) : 741 ~ 745
Chu C / 1989 / The relationship between ethylene biosynthesis and chilling tolerance in seedlings of rice (Oryza sativa L_) / Bot. Bull. Academia Sinica 30 : 263 ~ 273
Dall'Osto L / 2007 / Different roles of α- and β-branch xanthophylls in photosystem assembly and photoprotection / Biol. Chem 282 : 35056 ~ 35068
Garbero M / 2010 / Shortterm cold stress in two cultivars of Digitaria eriantha: effects on stress-related hormones and antioxidant defense system / Acta Physiol. Plant
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