Shiraz University Iran Agricultural Research 1013-9885 24.25 1.2 2007 03 20 The Effects of Paecilomyces lilacinus on the Pathogenesis of Meloidogyne Javanica and Tomato Plant Growth Parameters بررسی اثر قارچ آنتا گونیست Paecilomyces Lilacinus در روند بیماری زایی نماتد Meloidogyne javanica و پارامترهای رشد گوجه فرنگی 67 76 196 10.22099/iar.2007.196 EN M. NASR ESFAHANI1 Plant Pests and Diseases Research, Institute, Isfahan Agriculture and Natural Resource Research Center, Isfahan, I.R. Iran B. ANSARI POUR Plant Pests and Diseases Research, Institute, Isfahan Agriculture and Natural Resource Research Center, Isfahan, I.R. Iran Journal Article 2012 07 08 The present study is based on the investigation of a soil hyphomyces, <em>Paecilomyces lilacinus</em>, an opportunistic bio-control agent, in controlling root-knot nematode <em>Meloidogyne javanica</em> on tomato in greenhouse conditions. <em>P. lilacinus</em>, effectively promoted the growth of plants inoculated with <em>M. javanica</em> by suppressing its pathogenesis as root galling by the nematode and egg mass production was greatly reduced. The fungus was most effective when the fungus and the nematode were inoculated simultaneously or the fungus preceded the nematode in sequential inoculation. Conversely, when the nematode preceded the fungus, the improvement in plant growth and reduction in root galling and egg mass production were not substantial. A great number of nematode eggs were infected by <em>P. lilacinus</em>, inhibiting juvenile development. The interior of eggs, were devoid of juveniles and filled by the fungus mycelium. Developed juveniles were found attacked and/or killed and showed mycelial growth over their bodies. Simultaneous inoculation or sequential inoculation in which the fungus was added prior to the nematode was more effective in controlling the nematode than when nematodes preceded the fungus.<em> P. lilacinus</em> was, therefore, effective in controlling the root knot nematode on tomato and suppressing its population growth. https://iar.shirazu.ac.ir/article_196_2c1631664202127d3d32f89b6d479403.pdf