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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Banana MaSPL16 Modulates Carotenoid Biosynthesis during Fruit Ripening through Activating the Transcription of Lycopene beta-Cyclase Genes
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Banana MaSPL16 Modulates Carotenoid Biosynthesis during Fruit Ripening through Activating the Transcription of Lycopene beta-Cyclase Genes

机译：香蕉MasP116通过激活番茄红素β - 环酶基因的转录在果实成熟过程中调节类胡萝卜素生物合成

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摘要

Carotenoids are a class of bioactive compounds that exhibit health-promoting properties for humans, but their regulation in bananas during fruit ripening remains largely unclear. Here, we found that the total carotenoid content continued to be elevated along the course of banana ripening and peaked at the ripening stage followed by a decrease, which is presumably caused by the transcript abundances of carotenoid biosynthetic genes MaLCYB1.1 and MaLCYB1.2. Moreover, a ripening-inducible transcription factor MaSPL16 was characterized, which was a nuclear protein with transactivation activity. Transient transformation of MaSPL16 in banana fruits led to enhanced transcript levels of MaLCYB1.1 and MaLCYB1.2 and hence the total carotenoid accumulation. Importantly, MaSPL16 stimulated the transcription of MaLCYB1.1 and MaLCYB1.2 through directly binding to their promoters. Collectively, our findings indicate that MaSPL16 behaves as an activator to modulate banana carotenoid biosynthesis, which may provide a new target for molecular improvement of the nutritional and bioactive qualities of agricultural crops that accumulate carotenoids.
机译：类胡萝卜素是一类生物活性化合物，表现出用于人类的健康促进性质，但它们在果实成熟期间的香蕉调节仍然不清楚。在这里，我们发现总类胡萝卜素含量继续沿着香蕉成熟的过程升高，并且在成熟阶段达到峰值，然后减少，这可能是由类胡萝卜素生物合成基因Malcyb1.1和Malcyb1.2的转录物丰富引起的。此外，特征在于成熟型转录因子MasP116，其是具有转移活性的核蛋白质。香蕉水果中MasP116的瞬态转化导致了Malcyb1.1和Malcyb1.2的成绩单水平，因此总类胡萝卜素积累。重要的是，MasP116通过直接与其启动子直接结合刺激Malcyb1.1和Malcyb1.2的转录。统称，我们的研究结果表明，MASP116的表现为调节香蕉类胡萝卜素生物合成的活化剂，这可以为累积类胡萝卜素的农作物营养和生物活性品质提供新的分子改善新靶标。

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  • 来源
  • 作者

    Zhu Li-sha; Liang Shu-min; Chen Lu-lu; Wu Chao-jie; Wei Wei; Shan Wei; Chen Jian-ye; Lu Wang-jin; Su Xin-guo; Kuang Jian-fei;

  • 作者单位

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

    Guangdong Food &

    Drug Vocat Coll Guangzhou 510520 Peoples R China;

    South China Agr Univ Coll Hort Minist Educ Engn Res Ctr Southern Hort Prod Prese Guangdong Prov Key Lab Postharvest Sci Fruits &

    V Guangzhou 510642 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 营养卫生、食品卫生;农业科学;
  • 关键词

    banana fruit; carotenoid biosynthesis; ripening; SPL; transcriptional regulation;

    机译：香蕉果;类胡萝卜素生物合成;成熟;SPL;转录规则;

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