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Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (8): 1689-1698.doi: 10.16420/j.issn.0513-353x.2021-0591

• Research Papers • Previous Articles     Next Articles

The Effect of Camalexin on Chinese Cabbage Resistance to Clubroot

WANG Yu1, ZHANG Xue1, ZHANG Xueying1, ZHANG Siyu1, WEN Tingting1, WANG Yingjun1, GAN Caixia2, PANG Wenxing1,**()   

  1. 1. Department of Horticulture,Shenyang Agricultural University,Shenyang 110866,China
    2. Institute of Cash Crops,Hubei Academy of Agricultural Sciences,Wuhan 430064,China
  • Received:2022-02-25 Revised:2022-06-14 Online:2022-08-25 Published:2022-09-05
  • Contact: PANG Wenxing E-mail:pwxsyau@syau.edu.cn

Abstract:

To investigate the resistant effects of camalexin to Plasmodiophora brassicae in Chinese cabbage,treatments with five amount of camalexin were carried out by P. brassicae inoculation on a Chinese cabbage susceptible inbred line‘BJN3-1’. Results indicated that the control showed the visually susceptible symptoms. But the treatments with different amount of camalexin after 21 days treatment can significantly inhibit the invasion of P. brassicae to reduce the disease index of clubroot. The inhibition of P. brassicae infection was enhanced with the increase of camalexin application. Furthermore,the genes involved in synthesis pathways of jasmonic acid,salicylic acid,ethylene and pathogenesis-related proteins were significantly up-regulated after 14-21 days under camalexin treatment. These indicated that the application of camalexin can induce the host responses to P. brassicae invasion,and improve resistance. However,the effects of all camalexin treatments on clubroot development were reduced after 28 days treatment which may be related to the microbial detoxification activities of P. brassicae.

Key words: Chinese cabbage, clubroot disease, Plasmodiophora brassicae, camalexin

CLC Number: