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《Acta Agriculturae Boreali-Occidentalis Sinica》 2009-03
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Stress Resistance Characteristics of the PL04 Strain of Paecilomyces lilacinus and Parasitism Effect of It on Meloidogyne spp.

WANG Jun,HUANG Junsheng*,DENG Guoping,ZHAO Peijing,YANG Laying and CHEN Xide (Environment and Plant Protection Research Institute,Chinese Academy of Tropical Agricultural Sciences,Danzhou Hainan 571737,China)  
Stress resistance characteristics tests showed that the strain PL04 strain of Paecilomyces lilacinus had strong resistance ability and was compatibility with chemistry pesticide.For the growth and spore production of PL04 strain,the suitable temperature was 5~40 ℃(the optimum temperature was 29℃).The PL04 strain could grow on potato sugar agar with pH range from 4 to13(the optimum pH was 7).Tests showed that the LT50 at 40℃ was 78.8 min and at 50℃ was 45.3 min of the PL04 strain.The PL04 strain was able to endure higher concentration saline-alkali and chloramphenicol.Tests showed that the PL04 strain was sensitive to fungicide carbendazol,chlororthalonil,difenoconazole,herbicide paraquat and formalin,EC50 of them were 0.021 mg/mL,0.013 mg/mL,0.006mg mg/mL,0.016 mg/mL and 0.120 mg/mL respectively.But the PL04 strain was consistent to the nemacicide avermecti,phoxim and fungicide trazodone,EC50 of them were 0.175 mg/mL,0.338 mg/mL and 0.337 mg/mL respectively.The PL04 strain was demonstrated as a highly effective strain to control Meloidogyne spp.There was significantly difference among the different treatment.Results of the petridish test showed 94.3% of the eggs were parasitized by the fungus 18 d(7 days at 18℃ plus 11 days at 25℃) after inoculation.
【Fund】: 国家科技支撑计划项目(2007BAD48B02);; 中央级公益性科研m院所基本科研业务费专项(2007HZS1J007);; 科技部“国家科技基础条件平台工作”(2005DKA21201);; 农业科技成果转化项目(2007GB23260410)资助
【CateGory Index】: S436.68
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