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논문 기본 정보

자료유형
학술저널
저자정보
Yeu, Song-Yion (School of Agricultural Biotechnology, Seoul National University) Park, Bong-Soo (Department of Plant Science, Seoul National University) Sang, Wan-Gyu (Department of Plant Science, Seoul National University) Choi, Yang-Do (School of Agricultural Biotechnology, Seoul National University) Kim, Min-Chul (Division of Agriculture and Life Sciences, Gyeongsang National University) Song, Jong-Tae (School of Applied Biosciences, Kyungpook National University) Paek, Nam-Chon (Department of Plant Science, Seoul National University) Koh, Hee-Jong (Department of Plant Science, Seoul National University) Seo, Hak-Soo (Department of Plant Science, Seoul National University)
저널정보
한국식물학회 식물학회지 식물학회지 제50권 제5호
발행연도
2007.1
수록면
600 - 604 (5page)

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Tillering in rice (Oryza sativa L.) is an important agronomic trait that enhances grain production. A tiller is a specialized grain-bearing branch that is formed on a non-elongated basal internode that grows independently of the mother stem. Transgenic rice over-expressing the transcription factor OsTB1, a homologue of maize TB1 (Teosinte Branched 1), exhibits markedly reduced lateral branching without the propagation of axillary buds being affected. However, the tillering mechanism remains unknown. Therefore, to further understand that mechanism, we applied proteomics methodology to isolate the proteins involved. Using two-dimensional gel electrophoresis and mass spectrometry, our analysis of the basal nodes from two rice cultivars that differ in their numbers of tillers showed that a rice serine proteinase inhibitor, OsSerpin, accumulates in great amounts in high-tillering 'Hwachung' rice. Northern blot analysis revealed that much more OsSerpin transcript is found in 'Hwachung' than in relatively low-tillering 'Hanmaeum', likely because of high levels of transcription. Therefore, our data suggest that OsSerpin content determines the extent of lateral branching.

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