Effects of endobacteria on reproduction and virulence of Bursaphelenchus xylophilus

HE Longxi1,2, XUE Qi1, WU Xiaoqin1*

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2016, Vol. 40 ›› Issue (03) : 47-51.

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南京林业大学学报（自然科学版）
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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2016, Vol. 40 ›› Issue (03) : 47-51. DOI: 10.3969/j.issn.1000-2006.2016.03.008

Effects of endobacteria on reproduction and virulence of Bursaphelenchus xylophilus

  • HE Longxi1,2, XUE Qi1, WU Xiaoqin1*
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Abstract

To investigate the role of endobacterium in the pine wilt disease, the reproduction and virulence of non-parasitic Bursaphelenchus xylophilus, B. xylophilus treated with endobactria and wild-type B. Xylophilus were measured. We found that the spawning number, hatching rate and reproduction number of aseptic B. xylophilus was higher than B. xylophilus treated with bacteria in non-parasitic condition. Extracellular metabolism of endobacterium could inhibit the reproduction of B. xylophilus. After inoculated with 3 years old Pinus massoniana, the reproduction number of nematodes from high to low was as follow:wild-type B. xylophilus>B. xylophilus treated with endobacterium> aseptic B. xylophilus. The pines that inoculated with wild-type B. xylophilus firstly occurred wilting and the course of disease was the shortest in the three different treatments of B. xylophilus. Secondly, the B. xylophilus treated with endobacteria appeared wilting, and the aseptic B. xylophilus appeared lastly. These results indicated that endobacterium exerted different effect on the development of B. xylophilus in non-parasitic and parasitism condition and could enhance the virulence of nematode.

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HE Longxi1,2, XUE Qi1, WU Xiaoqin1*. Effects of endobacteria on reproduction and virulence of Bursaphelenchus xylophilus[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2016, 40(03): 47-51 https://doi.org/10.3969/j.issn.1000-2006.2016.03.008

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