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Coronatine Modulated the Generation of Reactive Oxygen Species for Regulating the Water Loss Rate in the Detaching Maize Seedlings

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  • Haiyue Yu

    (College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
    State Key Laboratory for Biology of Plant Diseases and Insert Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China)

  • Yubin Wang

    (College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Jiapeng Xing

    (College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Yushi Zhang

    (College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
    College of Biological Sciences, China Agricultural University, Beijing 100193, China)

  • Liusheng Duan

    (College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Mingcai Zhang

    (College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

  • Zhaohu Li

    (College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China)

Abstract

Coronatine (COR), a structural and functional mimic of jasmonates, is involved in a wide array of effects on plant development and defense response. The present study aims to investigate the role of COR, in counteracting drought stress by modulating reactive oxygen species (ROS) homeostasis, water balance, and antioxidant regulation in detached maize plants. Our results showed that COR can markedly decrease the water loss rate, but the antioxidants diphenyleneiodonium chloride (DPI) and dimethylthiourea (DMTU) eliminate the effect of water loss induced by COR. Using the dye 2′,7′-dichlorofluorescein diacetate (H2DCF-DA) loaded in the maize epidermis guard cells, it is observed that COR could increase ROS production, and then antioxidants DPI and DMTU decreased ROS production induced by COR. In addition, the expression of ZmRBOHs genes, which were associated with ROS generation was increased by COR in levels and ZmRBOHC was highly expressed in the epidermis guard cells. Moreover, COR-treated plants increased H 2 O 2 and O 2 − · accumulation, antioxidant enzyme activities in control plants, while COR relieved the ROS accumulation and antioxidant enzyme activities under PEG treatment. These results indicated that COR could improve maize performance under drought stress by modulating ROS homeostasis to maintain water loss rate and antioxidant enzyme activities.

Suggested Citation

  • Haiyue Yu & Yubin Wang & Jiapeng Xing & Yushi Zhang & Liusheng Duan & Mingcai Zhang & Zhaohu Li, 2021. "Coronatine Modulated the Generation of Reactive Oxygen Species for Regulating the Water Loss Rate in the Detaching Maize Seedlings," Agriculture, MDPI, vol. 11(7), pages 1-15, July.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:7:p:685-:d:597960
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    Cited by:

    1. Zahra Ranjbar & Mohammad Chizari & Hasan Sadighi & Homayon Farhadian & Philippe Lebailly & Thomas Dogot & Jorge Armando Ortegón Rojas & Yenny Katherine Parra-Acosta & Hossein Azadi, 2021. "Risk Factors in Various Climates of Wheat Production in Western Iran: Experts’ Opinions," Agriculture, MDPI, vol. 11(12), pages 1-17, December.
    2. Guo, Yuling & Huang, Guanmin & Wei, Zexin & Feng, Tianyu & Zhang, Kun & Zhang, Mingcai & Li, Zhaohu & Zhou, Yuyi & Duan, Liusheng, 2023. "Exogenous application of coronatine and alginate oligosaccharide to maize seedlings enhanced drought tolerance at seedling and reproductive stages," Agricultural Water Management, Elsevier, vol. 279(C).

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