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首页> 外文期刊>Genomics >iTRAQ-based comparative proteomic analysis reveals high temperature accelerated leaf senescence of tobacco (Nicotiana tabacum L.) during flue-curing
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iTRAQ-based comparative proteomic analysis reveals high temperature accelerated leaf senescence of tobacco (Nicotiana tabacum L.) during flue-curing

机译：基于ITRAQ的比较蛋白质组学分析揭示了烤烟期间烟草（尼古利亚纳Tabacum L.）的高温加速叶片衰老

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摘要

Tobacco (Nicotiana tabacum ) is extensively cultivated all over the world for its economic value. During curing and storage, senescence occurs, which is associated with physiological and biochemical changes in postharvest plant organs. However, the molecular mechanisms involved in accelerated senescence due to high temperatures in tobacco leaves during curing need further elaboration. We studied molecular mechanisms of senescence in tobacco leaves exposed to high temperature during curing (Fresh, 38 degrees C and 42 degrees C), revealed by isobaric tags for relative and absolute quantification (iTRAQ) for the proteomic profiles of cultivar Bi'na1. In total, 8903 proteins were identified, and 2034 (1150 up-regulated and 1074 down-regulated) differentially abundant proteins (DAPs) were obtained from tobacco leaf samples. These DAPs were mainly involved in posttranslational mod- ification, protein turnover, energy production and conversion. Sugar- and energy-related metabolic biological processes and pathways might be critical regulators of tobacco leaves exposed to high temperature during senescence. High-temperature stress accelerated tobacco leaf senescence mainly by down-regulating photo-synthesis-related pathways and degrading cellular constituents to maintain cell viability and nutrient recycling. Our findings provide a valuable inventory of novel proteins involved in senescence physiology and elucidate the protein regulatory network in postharvest organs exposed to high temperatures during flue-curing.
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著录项

  • 来源
    《Genomics》 |2020年第5期|共14页
  • 作者

    Wu Shengjiang; Guo Yushuang; Joan Heren Issaka; Tu Yonggao; Adil Muhammad Faheem; Sehar Shafaque; Zhao Degang; Shamsi Imran Haider;

  • 作者单位

    Guizhou Univ State Key Lab Breeding Base Green Pesticide &

    Agr Key Lab Plant Resources Conservat;

    Guizhou Acad Tobacco Sci Key Lab Mol Genet Upland Flue Cured Tobacco Qual &

    Ecol Key Lab CNTC;

    Zhejiang Univ Dept Agron Coll Agr &

    Biotechnol Key Lab Crop Germplasm Resource Hangzhou 310058;

    Guizhou Acad Tobacco Sci Key Lab Mol Genet Upland Flue Cured Tobacco Qual &

    Ecol Key Lab CNTC;

    Zhejiang Univ Dept Agron Coll Agr &

    Biotechnol Key Lab Crop Germplasm Resource Hangzhou 310058;

    Zhejiang Univ Dept Agron Coll Agr &

    Biotechnol Key Lab Crop Germplasm Resource Hangzhou 310058;

    Guizhou Univ State Key Lab Breeding Base Green Pesticide &

    Agr Key Lab Plant Resources Conservat;

    Zhejiang Univ Dept Agron Coll Agr &

    Biotechnol Key Lab Crop Germplasm Resource Hangzhou 310058;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 医学遗传学;
  • 关键词

    Tobacco; Postharvest physiology; Curing; qRT-PCR; iTRAQ;

    机译：烟草;采后生理;固化;QRT-PCR;ITRAQ;

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