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Plant Growth Stimulatory Effect of Terrein and Its Mechanism of Action in Crops under Drought Stress

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  • Lijing Lei

    (State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Security and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China)

  • Hua Shao

    (State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Security and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    Research Center for Ecology and Environment of Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China)

Abstract

Drought is one of the most important factors that limit crop yield. In this study, the growth promotive activity of terrein, a microbial metabolite, on four selected agricultural plants ( Vigna radiata , Brassica chinensis , Triticum aestivum and Sorghum bicolor ) under drought conditions was assessed via pot experiment. Terrein effectively stimulated the seedling growth of tested species and increased their fresh and dry weight at low concentrations (2 and 10 μg/mL), either applied as a seed soaking agent or a spray solution, especially on root growth. The maximum stimulatory effect on root growth was observed on B. chinensis seedlings (99.20%), on fresh weight was found on T. aestivum seedlings (97.23%), and on dry weight was discovered on V. radiata seedlings (58.33%), implying that this stimulatory effect was species-specific. Further study revealed that the application of terrein significantly raised the contents of GA3, IAA and CTK; meanwhile, MDA content declined significantly, whereas the activity of POD, CAT and SOD was boosted significantly, suggesting that terrein can stimulate plant growth by reducing the production of ROS. Our work is the first study focusing on terrein’s plant growth promotive activity, indicating terrein has the potential to be further explored as an environment-friendly growth regulator.

Suggested Citation

  • Lijing Lei & Hua Shao, 2023. "Plant Growth Stimulatory Effect of Terrein and Its Mechanism of Action in Crops under Drought Stress," Agriculture, MDPI, vol. 13(10), pages 1-13, September.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:10:p:1889-:d:1248860
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    References listed on IDEAS

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    1. Lili Guo & Shuang Zhao & Yuting Song & Mengqian Tang & Houjian Li, 2022. "Green Finance, Chemical Fertilizer Use and Carbon Emissions from Agricultural Production," Agriculture, MDPI, vol. 12(3), pages 1-18, February.
    2. Lili Guo & Sihang Guo & Mengqian Tang & Mengying Su & Houjian Li, 2022. "Financial Support for Agriculture, Chemical Fertilizer Use, and Carbon Emissions from Agricultural Production in China," IJERPH, MDPI, vol. 19(12), pages 1-19, June.
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