Cloning of an ADP-ribosylation factor gene from banana (Musa acuminata) and its expression patterns in postharvest ripening fruit
文献类型: 外文期刊
第一作者: Jin, Zhi-Qiang
作者: Jin, Zhi-Qiang;Jin, Zhi-Qiang;Wang, Yuan
作者机构:
关键词: Banana;Postharvest ripening;Ethylene biosynthesis;MaArf;Subcellular localization
期刊名称:JOURNAL OF PLANT PHYSIOLOGY ( 影响因子:3.549; 五年影响因子:4.164 )
ISSN: 0176-1617
年卷期: 2010 年 167 卷 12 期
页码:
收录情况: SCI
摘要: A full-length cDNA encoding an ADP-ribosylation factor (ARF) from banana (Musa acuminata) fruit was cloned and named MaArf. It contains an open reading frame encoding a 181-amino-acid polypeptide. Sequence analysis showed that MaArf shared high similarity with ARF of other plant species. The genomic sequence of MaArf was also obtained using polymerase chain reaction (PCR). Sequence analysis showed that MaArf was a split gene containing five exons and four introns in genomic DNA. Reverse-transcriptase PCR was used to analyze the spatial expression of MaArf. The results showed that MaArf was expressed in all the organs examined: root, rhizome, leaf, flower and fruit. Real-time quantitative PCR was used to explore expression patterns of MaArf in postharvest banana. There was differential expression of MaArf associated with ethylene biosynthesis. In naturally ripened banana, expression of MaArf was in accordance with ethylene biosynthesis. However, in 1-methylcyclopropene-treated banana, the expression of MaArf was inhibited and changed little. When treated with ethylene, MaArf expression in banana fruit significantly increased in accordance with ethylene biosynthesis; the peak of MaArf was 3 d after harvest, 11 d earlier than for naturally ripened banana fruits. These results suggest that MaArf is induced by ethylene in regulating postharvest banana ripening. Finally, subcellular localization assays showed the MaArf protein in the cytoplasm. (C) 2010 Elsevier GmbH. All rights reserved.
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