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- W4311588720 abstract "Abstract Background Drought is one of the main environmental factors limiting plant growth and development. Pennisetum purpureum Schum. was used to explore the mitigation effects of exogenous strigolactone (SL) on drought stress during the seedling stage. The effects of different concentrations (1, 3, 5, and 7 μmol·L − 1 ) of SL on the photosynthesis characteristics, growth performance, and endogenous abscisic acid (ABA) of P. purpureum under drought stress were studied. Results Exogenous SL could effectively alleviate the inhibitory effect of drought stress on P. purpureum growth. Compared with drought stress, the net photosynthesis rate, stomatal conductance, transpiration rate, and water-use efficiency of the leaves of P. purpureum after SL treatment significantly increased, thereby exerting a significant mitigation effect on the decrease in photosystem II maximum photochemical efficiency and the performance index based on light absorption caused by drought. Moreover, the exogenous application of SL can effectively increase the fresh and dry weight of the leaves and roots and the main-root length. After applying SL for 120 h, the ABA content of P. purpureum decreased significantly. The activity of key enzymes of photosynthesis significantly increased after 48 h of external application of SL to P. purpureum . Conclusions SL treatment can improve the photosynthesis performance of P. purpureum leaves under drought conditions and increase the antioxidant capacity of the leaves, thereby reducing the adverse effects of drought, promoting the growth of P. purpureum , and effectively improving the drought resistance of P. purpureum ." @default.
- W4311588720 created "2022-12-27" @default.
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- W4311588720 date "2022-12-12" @default.
- W4311588720 modified "2023-10-14" @default.
- W4311588720 title "Effects of exogenous Strigolactone on the physiological and ecological characteristics of Pennisetum purpureum Schum. Seedlings under drought stress" @default.
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- W4311588720 doi "https://doi.org/10.1186/s12870-022-03978-y" @default.
- W4311588720 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36510126" @default.
- W4311588720 hasPublicationYear "2022" @default.
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