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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.3
- 수록면
- 250 - 257 (8page)
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Abiotic stresses such as drought and low temperature critically restrict plant growth, reproduction, and produc-tivity. Higher plants have developed various defense strategies against these unfavorable conditions. CaPUB1 (Capsicum annuum Putative U-box protein 1) is a hot pepper U-box E3 Ub ligase. Transgenic Arabidopsis plants that constitutively expressed CaPUB1 exhibited drought-sensitive phenotypes, suggesting that it functions as a negative regulator of the drought stress response. In this study, CaPUB1 was over-expressed in rice (Oryza sativa L.), and the phenotypic properties of transgenic rice plants were examined in terms of their drought and cold stress tolerance. Ubi:CaPUB1 T3 transgenic rice plants displayed phenotypes hypersensitive to dehydration, suggesting that its role in the negative regulation of drought stress response is conserved in dicot Arabidopsis and monocot rice plants. In contrast, Ubi:CaPUB1 progeny exhibited phenotypes markedly tolerant to prolonged low temperature (4?C) treatment, compared to those of wild-type plants, as determined by survival rates, electrolyte leakage, and total chlorophyll content. Cold stress-induced marker genes, including DREB1A, DREB1B, DREB1C, and Cyto-chrome P450, were more up-regulated by cold treatment in Ubi:CaPUB1 plants than in wild-type plants. These results suggest that CaPUB1 serves as both a negative regulator of the drought stress response and a positive regulator of the cold stress response in transgenic rice plants. This raises the possibility that CaPUB1 participates in the cross-talk between drought and low-temperature signaling pathways.
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참고문헌 (39)
참고문헌 신청
Agarwal, P. K. / 2006 / Role of DREB transcription factors in abiotic and biotic stress tolerance in plants / Plant Cell Rep 25:1263~1274
Benjamin, J. G. / 2006 / Water deficit effects on root distribution of soybean, field pea and chickpea / Field Crops Res 97:248~253
Bergler, J. / 2011 / Plant U-box armadillo repeat proteins AtPUB18 and AtPUB19 are involved in salt inhibition of germination in Arabidopsis / Plant Biol. (Stuttg) 13:725~730
Byun, M. Y. / 2015 / Constitutive expression of DaCBF7, an Antarctic vascular plant, Deschampsia antarctica CBF homolog, resulted in improved cold tolerance in transgenic rice plants / Plant Science 236:61~74
Cho, S. K. / 2006 / Heterologous expression and molecular and cellular characterization of CaPUB1encoding a hot pepper U-Box E3 ubiquitin ligase homolog / Plant Physiol 142:1664~1682
Benjamin, J. G. / 2006 / Water deficit effects on root distribution of soybean, field pea and chickpea / Field Crops Res 97:248~253
Bergler, J. / 2011 / Plant U-box armadillo repeat proteins AtPUB18 and AtPUB19 are involved in salt inhibition of germination in Arabidopsis / Plant Biol. (Stuttg) 13:725~730
Byun, M. Y. / 2015 / Constitutive expression of DaCBF7, an Antarctic vascular plant, Deschampsia antarctica CBF homolog, resulted in improved cold tolerance in transgenic rice plants / Plant Science 236:61~74
Cho, S. K. / 2006 / Heterologous expression and molecular and cellular characterization of CaPUB1encoding a hot pepper U-Box E3 ubiquitin ligase homolog / Plant Physiol 142:1664~1682
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