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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 11 - 20 (10page)
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Ascorbate peroxidases (APXs) are enzymes that detoxify peroxides such as hydrogen peroxide using ascorbate. Theyare distributed as isoenzymes in distinct cellular compartments, such as the cytosol, mitochondria and peroxisomes, where they playessential roles in scavenging reactive oxygen species (ROS) and protecting cells against the toxic effects of these species in higherplants, algae, euglena and other organisms. APXs also respond to environmental stresses, such as salinity and drought, and riceascorbate peroxidase 1 (OsAPx1) participates in salinity tolerance. However, it is still unclear how OsAPx1 is involved in growth anddevelopment before and after flowering. Here, we show that OsAPx1 plays an important function in seed development, includingfertilization. Proteomic analysis and quantitative RT-PCR showed that protein and mRNA levels of OsAPx1 were much higher inimmature seeds than in mature seeds. Plant height and grain size in an Osapx1 mutant were almost the same as those in wild-type plants.
However, about 58% of the seeds were aborted in the Osapx1 mutant, although the mutant was capable of normal flowering. Our resultssuggest that rice ascorbate peroxidase functions both as a regulator of seed development and as a scavenger of ROS.
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참고문헌 (38)
참고문헌 신청
Agrawal GK / 2003 / Importance of ascorbate peroxidases OsAPx1 and OsAPx2 in the rice pathogen response pathway and growth and reproduction revealed by their transcriptional profiling / Gene 322:93~103
Altenbach SB / 1981 / Identification of a satellite RNA associated with turnip crinkle virus / Virology 112:25~33
Bai X / 2010 / Genetic dissection of rice grain shape using a recombinant inbred line population derived from two contrasting parents and fine mapping a pleiotropic quantitative trait locus qGL7 / BMC Genet 11:1~11
Dat J / 2000 / Dual action of the active oxygen species during plant stress response / Cell Mol. Life Sci 57:779~795
Fan C / 2006 / GS3, a major QTL for grain length and weight and minor QTL for grain width and thickness in rice, encodes a putative transmembrane protein / Theor. Appl. Genet 112:1164~1171
Altenbach SB / 1981 / Identification of a satellite RNA associated with turnip crinkle virus / Virology 112:25~33
Bai X / 2010 / Genetic dissection of rice grain shape using a recombinant inbred line population derived from two contrasting parents and fine mapping a pleiotropic quantitative trait locus qGL7 / BMC Genet 11:1~11
Dat J / 2000 / Dual action of the active oxygen species during plant stress response / Cell Mol. Life Sci 57:779~795
Fan C / 2006 / GS3, a major QTL for grain length and weight and minor QTL for grain width and thickness in rice, encodes a putative transmembrane protein / Theor. Appl. Genet 112:1164~1171
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