ArticleBMC plant biology2025
How do arbuscular mycorrhizal fungi enhance drought resistance of Leymus chinensis?
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Review
- Arbuscular mycorrhizal colonization does not improve root hydraulic supply in tomato and pea.Plant physiology · 2026Article
- Genotype-dependent stability and specialization of arbuscular mycorrhizal fungal communities under drought in common bean.Frontiers in plant science · 2026Article
- Battle of Arbuscular Mycorrhizal Fungi Against Drought Stress: A Gateway to Sustainable Agriculture.Journal of fungi (Basel, Switzerland) · 2025Review
- Effects of Additives on Fermentation Quality, Nutritional Quality, and Microbial Diversity ofMicroorganisms · 2025Article
- Drought resistance ofFrontiers in plant science · 2025Article
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7 authors.
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Abstract
backgroundLeymus chinensis is a vital, dominant grass species in Eurasian temperate grasslands, including the Inner Mongolian steppe. L. chinensis exhibits enhanced drought tolerance through symbiosis with arbuscular mycorrhizal fungi (AMF). The physiological mechanisms behind this drought resistance need to be unraveled. A pot experiment was conducted with four inoculation treatments (inoculation with Funneliformis mosseae, with Claroideoglomus etunicatum, or with both, and no inoculation) and three drought treatments (no drought (75.00% field capacity), mild drought (56.25% field capacity), severe drought (37.50% field capacity)) to analyze how AMF enhance drought resistance of L. chinensis.
resultsThe results showed that drought stress inhibited the growth of L. chinensis, depending on its intensity, whereas AMF inoculation significantly improved growth and alleviated the effects of drought stress. Regardless of drought conditions, AMF inoculation significantly enhanced key biochemistry parameters, including soluble sugar concentration and antioxidant enzyme activities, ultimately promoting plant productivity. Structural equation models (SEMs) further showed that the increase in biomass of L. chinensis inoculated with AMF during mild drought was primarily due to reduced catalase activity and increased cytokinin concentration by increased soluble sugar concentration. However, under severe drought, the increase in biomass of L. chinensis inoculated with AMF was associated with increased soluble sugar concentration caused by increased peroxidase activity and reduced cytokinin concentration.
conclusionsThe mechanisms by which AMF enhance the drought resistance of L. chinensis vary depending on the severity of drought. AMF increase the soluble sugar concentration by enhancing photosynthetic activity to improve drought resistance under mild drought. Under severe drought conditions, AMF enhance the concentration of soluble sugars in L. chinensis by further activating the expression of antioxidant enzyme genes, thereby improving its drought resistance. Additionally, C. etunicatum maintains high ectomycelium by requiring less carbon sources to efficiently absorb the residual soil moisture under severe drought, thus superiorly enhancing the drought resistance of L. chinensis. This study provides a theoretical foundation for the application of AMF fertilizer to improve the productivity of L. chinensis in arid grasslands.
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