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首页> 外文期刊>Canadian Journal of Plant Science >Pigment comparison and expression of chlorophyll metabolism genes in yellow and green Acer palmatum Thunb. ex Murray leaves
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Pigment comparison and expression of chlorophyll metabolism genes in yellow and green Acer palmatum Thunb. ex Murray leaves

机译：黄色和绿色宏基棕榈树叶绿素代谢基因的颜料比较及表达。 Ex Murray离开了

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摘要

Exterior leaf color is an important trait for ornamental foliage plants but the molecular mechanism underlying the variation in color between yellow-and green-leaf Acer palmatum Thunb. ex Murray is poorly understood. Indeed, chlorophyll (Chl) contents and gene transcriptions were very different between the yellow mutant (YM) and green wild-type (GW) leaves of this species. Here, annual variations of leaf color and pigment contents in two varieties were investigated. Then, transcript levels of six genes involved in Chl metabolism were quantitatively measured using real-time polymerase chain reaction in YM and GW leaves. Compared with GW, the color changes of YM leaves were classified into four typical periods. During the yellow leaf stage, YM showed greatly reduced Chl synthesis and a higher ratio of carotenoid (Car) to Chl than GW. These phenomena may be the main cause of yellow leaves in YM. In addition, expression levels of Chl synthesis genes (ApPORA, ApPORB, ApCAO, and ApCHLG) in YM were very low during this period. Concomitantly, the amount of transcripts of genes for Chl degradation (ApCLH1 and ApCLH2) rose significantly compared with GW. Once YM leaves turned red, the above differences between the two genotypes lessened. Overall, our results indicated that changes in Chl synthesis and degradation may play important roles leading to the yellow leaves of YM A. palmatum.
机译：外叶颜色是观赏叶子植物的重要特征，但是黄色和绿叶宏碁棕榈泥之间的颜色变化的分子机制。 Ex Murray被理解得很差。实际上，叶绿素（CHL）含量和基因转录在该物种的黄色突变体（YM）和绿色野生型（GW）叶片之间非常不同。在此，研究了两种品种的叶子颜色和颜料含量的年变化。然后，使用Ym和Gw叶中的实时聚合酶链反应定量测量参与CHL代谢的六种基因的转录水平。与GW相比，Ym叶的颜色变化分为四个典型时期。在黄叶阶段期间，YM显得大大降低了CHL合成和类胡萝卜素（汽车）比GW更高的比例。这些现象可能是YM中黄叶的主要原因。此外，在此期间，Ym中CHL合成基因（Appora，Apporb，ApcaO和APCHLG）的表达水平非常低。同时，与GW相比，CHL降解（APCLH1和APCLH2）的基因转录物的量显着升高。一旦YM叶子变红，两种基因型之间的上述差异减小了。总体而言，我们的结果表明，CHL综合和退化的变化可能起到导致YM A. Palmatum黄色叶子的重要角色。

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  • 来源
    《Canadian Journal of Plant Science》 |2017年第5期|共9页
  • 作者

    Li S-S.; Li Q-Z.; Tang L.; Wen J.;

  • 作者单位

    Jiangsu Acad Agr Sci Jiangsu Key Lab Hort Crop Genet Improvement Inst Hort 50 Zhongling St Nanjing 210014 Jiangsu Peoples R China;

    Jiangsu Acad Agr Sci Jiangsu Key Lab Hort Crop Genet Improvement Inst Hort 50 Zhongling St Nanjing 210014 Jiangsu Peoples R China;

    Jiangsu Acad Agr Sci Jiangsu Key Lab Hort Crop Genet Improvement Inst Hort 50 Zhongling St Nanjing 210014 Jiangsu Peoples R China;

    Jiangsu Acad Agr Sci Jiangsu Key Lab Hort Crop Genet Improvement Inst Hort 50 Zhongling St Nanjing 210014 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物学;
  • 关键词

    leaf color variation; pigment; gene expression; Acer palmatum;

    机译：叶子颜色变异;颜料;基因表达;宏alg;

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