Binglin LI, Dedong DING, Jing HE, et al. Effects of Arbuscular Mycorrhizal on the Growth of Lycium barbarum and Its Resistance to Root Rot[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY(Natural Science), 2022, 37(4): 547-552. DOI: 10.12101/j.issn.1004-390X(n).202111047
Citation: Binglin LI, Dedong DING, Jing HE, et al. Effects of Arbuscular Mycorrhizal on the Growth of Lycium barbarum and Its Resistance to Root Rot[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY(Natural Science), 2022, 37(4): 547-552. DOI: 10.12101/j.issn.1004-390X(n).202111047

Effects of Arbuscular Mycorrhizal on the Growth of Lycium barbarum and Its Resistance to Root Rot

  • PurposeTo reveal the promoting growth effect and root rot resistance of arbuscular mycorrhizal (AM) fungus (Rhizophagus intraradices) on Lycium barbarum plants.
    MethodsThrough pot experiment, four treatments were adopted: without inoculum (CK), inoculated with Fusarium solani (FS), inoculated with R. intraradices (RI), and double inoculated (RI+FS). The root infection rate, disease index, growth index and related defense enzyme activities of L.barbarum were determined to evaluate the growth-promoting effect of RI on L. barbarum and the ability to resist root rot.
    ResultsAfter RI treatment 90 days, compared with CK, the plant height, stem diameter, fresh weight and total chlorophyll content of L. barbarum were significantly increased by 54.86%, 35.94%, 126.91% and 57.14% (P<0.05), respectively, and the root infection rate reached 45.61%. Compared with FS, the control effect of RI+FS was 62.79%; the activities of PPO, SOD, CAT, APX and PAL of L. barbarum significantly increased by 60.81%, 51.72%, 48.13%, 57.54% and 88.31% (P<0.05), respectively.
    ConclusionIt showed that R. intraradices can promote the growth of L. barbarum, improving the activity of the related defense enzymes and enhance its resistance to root rot. This resistance may be derived from the good symbiotic system formed by AM fungi and L. barbarum roots, which not only improves the physiological metabolism level of L. barbarum, but also stimulates its disease resistance mechanism.
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