%0 Journal Article
%T Diversity of actinomycetes associated with root-knot nematode and their potential for nematode control<br>根结线虫放线菌及其生物防治活性研究
%A LUO Hong-li
%A SUN Man-hong
%A XIE Jian-ping
%A LIU Zhi-heng
%A HUANG Ying
%A <br>罗红丽
%A 孙漫红
%A 谢建平
%A 刘志恒
%A 黄英
%J 微生物学报
%D 2006
%I 
%X Twenty actinomycetes were isolated from root-knot nematode eggs and females collected from 11 plant root samples infested by Meloidogyne spp.. The isolates were assigned to the genera Streptomyces, Nocardia and Pseudonocardia respectively, based on analysis of morphological characteristics, cell-wall DAPs and 16S rRNA gene sequences. 80% of them were streptomycetes. Biocontrol potential of the isolates against Meloidogyne hapla was evaluated in liquid culture in vitro. The average percentages of egg parasitism, egg hatching, and juvenile mortality were 54.1, 40.4 and 26.2, respectively. Three Streptomyces strains and one Nocardia strain with high pathogenicity in vitro were selected to determine their ability to reduce tomato root galls in greenhouse. The results demonstrated good biocontrol efficacy (31.4%-56.4%) of the strains.
%K Actinomycetes
%K Diversity
%K Root-knot nematode
%K Biocontrol efficiency<br>放线菌
%K 多样性
%K 根结线虫
%K 防效
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A3C6BA55AB623B90FA9104CFFC826F3C&aid=74BA0656DA400F0F&yid=37904DC365DD7266&vid=D997634CFE9B6321&iid=E158A972A605785F&sid=4720E9D07E8A2290&eid=ED9DF3402785F68D&journal_id=0001-6209&journal_name=微生物学报&referenced_num=3&reference_num=16