The Phytochemicals with Antagonistic Activities Toward Pathogens of a Disease Complex Caused by Meloidogyne incognita and Ralstonia solanacearum

ISSN: 0973-7510

E-ISSN: 2581-690X

The Phytochemicals with Antagonistic Activities Toward Pathogens of a Disease Complex Caused by Meloidogyne incognita and Ralstonia solanacearum

Huang Sheng Zhuo^1#, Huang Hui Ni^2#, Ma Qing Yun¹, Mo Ming He² , Zhu Ming Liang³, Dai Hao Fu¹, Ji Yan Ping⁴, Wang Qing Hai⁴ and Zhao You Xing¹

¹Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou, 571101, P. R. China.

²Laboratory for Conservation and Utilization of Bio-Resources & Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, 650091, P. R. China.

³Yunnan of CNTC, Kunming, 650011, P. R. China.

⁴Shandong Provincial Academy of Forestry, Jinan, 250014, P. R. China.

J Pure Appl Microbiol. 2015;9(1):209-213

Received: 09/12/2013| Accepted: 29/01/2014| Published: 31/03/2015

Abstract

Application of phytochemical compounds with dual functional activities against pathogens is a novel strategy to control the disease complexes. Targeting a complex disease of tobacco caused by Meloidogyne incognita and Ralstonia solanacearum, the present study identified four active compounds from stem of a medical plant Daphne acutiloba which with bioactivities against the both pathogens. At a concentration of 25 µg ml-1, daphneone 2 (1), daphneolon (2), daphnodorin A (3) and daphnodorin B (4) displayed nematicidal activities of 40.23-70.6%, and showed antibacterial circle diameters of 4.04-8.09 mm.

Keywords

Daphne acutiloba, Disease complexes, Phytochemicals, Soilborne pathogens

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