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학술저널
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한국식물생명공학회 Plant Biotechnology Reports Plant Biotechnology Reports 제14권 제3호
발행연도
2020.1
수록면
293 - 300 (8page)

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Rice (Oryza sativa L.) pollen grains are highly sensitive to extreme temperatures. Studies on the proteomic analysis of pollen at different developmental stages are limited. In this study, to identify proteins expressed during pollen development, we performed shotgun proteomic analysis of rice anthers harvested at 8, 3, and 0 days before heading (DBH). A total of 4509 non-redundant proteins were identified in rice anthers at each of the three time points with three replications per time point. Among these, 2968 proteins were reproducible, of which 1919 were specifically expressed at a given stage of anther development. Clustering and gene ontology (GO) enrichment analyses categorized the specifically expressed proteins into four groups. Group I comprised proteins involved in cell differentiation, reproduction, and stress response; Group II contained proteins related to cell growth and carbohydrate metabolic process; Group III included proteins related to starch accumulation and lipid metabolic process; Group IV comprised proteins related to structure morphogenesis and cellular components. Proteins in Group I steadily increased during anther development, whereas those in Group I steadily decreased. Group III proteins showed the highest expression at 3 DBH, whereas Group IV proteins exhibited the lowest expression at 3 DBH.

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