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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (7): 2307-2313.doi: 10.13287/j.1001-9332.202006.039

• Special Features of Plant Allelopathy • Previous Articles     Next Articles

Hormone response of Lycium barbarum to gall mite Aceria pallida and effects of exogenous salicylic acid on the infestation and development of gall mite

YANG Meng-ke1, LI Jian-ling1,2, LIU Sai1, QIAO Hai-li1, GUO Kun1, XU Rong1, CHEN Jun1, XU Chang-qing1*   

  1. 1Institute of Medicinal Plant Development, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100193, China;
    2China Resources Sanjiu Medical & Pharmaceutical Co., Ltd., Shen-zhen 518110, Guangdong, China
  • Received:2019-11-24 Accepted:2020-03-21 Online:2020-07-15 Published:2021-01-15
  • Contact: E-mail: cqxu@implad.ac.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (81673699, 81274198), the Chinese Academy of Medical Sciences Innovation Fund for Medical Science (CIFMS 2016-I2M-3-017) and the National Key Research and Development Program of China (2017YFC1700706).

Abstract: To investigate the hormone responses of Lycium barbarum to Aceria pallida infestation and the effects of exogenous salicylic acid on the infestation and development of gall mite, four phytohormones (salicylic acid (SA), jasmonic acid (JA), Auxin, and abscisic acid (ABA)) of L. barbarum leaves infested with A. pallida were determined by LC-MS/MS. Moreover, the effects of exogenous SA on the growth of gall and mite population were investigated. The results showed that contents of SA and JA in leaves infested with A. pallida were significantly higher (4.0 and 13.0 folds, respectively) than that in control, but that of Auxin and ABA did not change. The growth of gall was inhibited significantly by exogenous SA, with the inhibition increasing with the prolongation of treatment time. Meanwhile, mite population in galls treated with SA was significantly lower than that in control. Our results suggested that A. pallida could induce SA and JA resistance of L. barbarum, and that the exogenous SA could inhibit the growth of gall and mite population. Exogenous SA could be potentially used in A. pallida prevention.

Key words: plant defense, induced resistance, plant hormone, infestation, development