Drought priming at vegetative growth stages improves tolerance to drought and heat stresses occurring during grain filling in spring wheat

Xiao Wang, Marija Vignjevic, Fulai Liu, Susanne Jacobsen, Dong Jiang, Bernd Wollenweber

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Plants of spring wheat (Triticum aestivum L. cv. Vinjett) were exposed to moderate water deficit at the vegetative growth stages six-leaf and/or stem elongation to investigate drought priming effects on tolerance to drought and heat stress events occurring during the grain filling stage. Comparedwith the non-primed plants, drought priming could alleviate photo-inhibition in flag leaves caused by drought and heat stress episodes during grain filling. In the primed plants, drought stress inhibited photosynthesis mainly through decrease of maximum photosynthetic electron transport rate, while decrease of the carboxylation efficiency limited photosynthesis under heat stress. The higher saturated net photosynthetic rate of flag leaves coincidedwith the lowered nonphotochemical quenching rates in the twice-primed plants under drought stress and in the primed plants during stem elongation under heat stress. Compared to the non-priming treatment, drought priming either applied once or twice alleviated the grain yield reduction by drought stress during grain filling, and priming during the stem elongation stage alleviated yield loss by heat stress at grain filling. The higher concentration of abscisic acid in primed plants under drought stress could contribute to higher grain yield compared to the non-primed plants. Taken together, the results indicate that drought priming during vegetative stages improved tolerance to both drought and heat stress events occurring during grain filling in wheat.
    Original languageEnglish
    JournalPlant Growth Regulation
    Volume75
    Issue number3
    Pages (from-to)677-687
    Number of pages11
    ISSN0167-6903
    DOIs
    Publication statusPublished - 2015

    Keywords

    • Abscisic acid
    • Carboxylation efficiency
    • Cross tolerance
    • Drought priming
    • Wheat

    Cite this

    Wang, Xiao ; Vignjevic, Marija ; Liu, Fulai ; Jacobsen, Susanne ; Jiang, Dong ; Wollenweber, Bernd . / Drought priming at vegetative growth stages improves tolerance to drought and heat stresses occurring during grain filling in spring wheat. In: Plant Growth Regulation. 2015 ; Vol. 75, No. 3. pp. 677-687.
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    abstract = "Plants of spring wheat (Triticum aestivum L. cv. Vinjett) were exposed to moderate water deficit at the vegetative growth stages six-leaf and/or stem elongation to investigate drought priming effects on tolerance to drought and heat stress events occurring during the grain filling stage. Comparedwith the non-primed plants, drought priming could alleviate photo-inhibition in flag leaves caused by drought and heat stress episodes during grain filling. In the primed plants, drought stress inhibited photosynthesis mainly through decrease of maximum photosynthetic electron transport rate, while decrease of the carboxylation efficiency limited photosynthesis under heat stress. The higher saturated net photosynthetic rate of flag leaves coincidedwith the lowered nonphotochemical quenching rates in the twice-primed plants under drought stress and in the primed plants during stem elongation under heat stress. Compared to the non-priming treatment, drought priming either applied once or twice alleviated the grain yield reduction by drought stress during grain filling, and priming during the stem elongation stage alleviated yield loss by heat stress at grain filling. The higher concentration of abscisic acid in primed plants under drought stress could contribute to higher grain yield compared to the non-primed plants. Taken together, the results indicate that drought priming during vegetative stages improved tolerance to both drought and heat stress events occurring during grain filling in wheat.",
    keywords = "Abscisic acid, Carboxylation efficiency, Cross tolerance, Drought priming, Wheat",
    author = "Xiao Wang and Marija Vignjevic and Fulai Liu and Susanne Jacobsen and Dong Jiang and Bernd Wollenweber",
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    Drought priming at vegetative growth stages improves tolerance to drought and heat stresses occurring during grain filling in spring wheat. / Wang, Xiao; Vignjevic, Marija; Liu, Fulai; Jacobsen, Susanne; Jiang, Dong; Wollenweber, Bernd .

    In: Plant Growth Regulation, Vol. 75, No. 3, 2015, p. 677-687.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Drought priming at vegetative growth stages improves tolerance to drought and heat stresses occurring during grain filling in spring wheat

    AU - Wang, Xiao

    AU - Vignjevic, Marija

    AU - Liu, Fulai

    AU - Jacobsen, Susanne

    AU - Jiang, Dong

    AU - Wollenweber, Bernd

    PY - 2015

    Y1 - 2015

    N2 - Plants of spring wheat (Triticum aestivum L. cv. Vinjett) were exposed to moderate water deficit at the vegetative growth stages six-leaf and/or stem elongation to investigate drought priming effects on tolerance to drought and heat stress events occurring during the grain filling stage. Comparedwith the non-primed plants, drought priming could alleviate photo-inhibition in flag leaves caused by drought and heat stress episodes during grain filling. In the primed plants, drought stress inhibited photosynthesis mainly through decrease of maximum photosynthetic electron transport rate, while decrease of the carboxylation efficiency limited photosynthesis under heat stress. The higher saturated net photosynthetic rate of flag leaves coincidedwith the lowered nonphotochemical quenching rates in the twice-primed plants under drought stress and in the primed plants during stem elongation under heat stress. Compared to the non-priming treatment, drought priming either applied once or twice alleviated the grain yield reduction by drought stress during grain filling, and priming during the stem elongation stage alleviated yield loss by heat stress at grain filling. The higher concentration of abscisic acid in primed plants under drought stress could contribute to higher grain yield compared to the non-primed plants. Taken together, the results indicate that drought priming during vegetative stages improved tolerance to both drought and heat stress events occurring during grain filling in wheat.

    AB - Plants of spring wheat (Triticum aestivum L. cv. Vinjett) were exposed to moderate water deficit at the vegetative growth stages six-leaf and/or stem elongation to investigate drought priming effects on tolerance to drought and heat stress events occurring during the grain filling stage. Comparedwith the non-primed plants, drought priming could alleviate photo-inhibition in flag leaves caused by drought and heat stress episodes during grain filling. In the primed plants, drought stress inhibited photosynthesis mainly through decrease of maximum photosynthetic electron transport rate, while decrease of the carboxylation efficiency limited photosynthesis under heat stress. The higher saturated net photosynthetic rate of flag leaves coincidedwith the lowered nonphotochemical quenching rates in the twice-primed plants under drought stress and in the primed plants during stem elongation under heat stress. Compared to the non-priming treatment, drought priming either applied once or twice alleviated the grain yield reduction by drought stress during grain filling, and priming during the stem elongation stage alleviated yield loss by heat stress at grain filling. The higher concentration of abscisic acid in primed plants under drought stress could contribute to higher grain yield compared to the non-primed plants. Taken together, the results indicate that drought priming during vegetative stages improved tolerance to both drought and heat stress events occurring during grain filling in wheat.

    KW - Abscisic acid

    KW - Carboxylation efficiency

    KW - Cross tolerance

    KW - Drought priming

    KW - Wheat

    U2 - 10.1007/s10725-014-9969-x

    DO - 10.1007/s10725-014-9969-x

    M3 - Journal article

    VL - 75

    SP - 677

    EP - 687

    JO - Plant Growth Regulation

    JF - Plant Growth Regulation

    SN - 0167-6903

    IS - 3

    ER -