Effect of Paecilomyces lilacinus on tomato plants and the management of root knot nematodes

Abstract

Effect of Paecilomyces lilacinus on tomato plant growth and the management of root knot nematodes in tomato was studied. The research work was conducted in Microbiology & Bio-control Laboratory, Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh and in Net-house of Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh, during the period from July, 2016 to October, 2017. In net-house pot culture experiment, four different treatments were used viz., T1: Inoculation of egg masses (10 egg masses/plant) of Nematodes (Meloidogyne spp.), T2: Application of P. lilacinus, T3: Application of egg masses of Nematodes and P. lilacinus simultaneously, and T4: Control (non-treated). Spore suspension (10×105 Conc.) of P. lilacinus was mixed with the soil before transplantation and Meloidogyne spp. was inoculated on three days after transplantation. Application of P. lilacinus in soil enhanced the plant growth parameters of tomato plants. Inoculation of Meloidogyne spp. reduced plant growth and the reduction was increased with the increase of inoculum density of Meloidogyne spp. Maximum plant growth reduction was recorded when Meloidogyne spp. was inoculated alone. The maximum plant growth was recorded in case of application of P. lilacinus to soil. A high percentage (85%) of egg masses of Meloidogyne spp. was infected by P. lilacinus when applied together
 J. Bangladesh Agril. Univ. 17(1): 9–13, March 2019

Combined Use of Green Manure and Biological Agents to Control Meloidogyne javanica (Treub) Chitwood in Soybean

“…The fungus was shown to be effective in the control of Meloidogyne spp. The biological agent acts by producing chitinases and proteases that degrade the cell wall of nematode structures and by inducing resistance in plants (Yang et al, 2015;Ahmed & Monjil, 2019). In addition to controlling root-knot nematodes (Miamoto et al, 2021), P. lilacinum + T. harzianum efficiently reduced populations of lesion nematodes (P. brachyurus) in soybean grown under greenhouse and field conditions (Dias-Arieira et al, 2018).…”

“…Antagonistic effects are attributed to antibiosis (characterized by the production of secondary metabolites with a toxic action on nematodes), direct parasitism of nematode eggs and juveniles, and induction of plant resistance to diseases (Abdel-Azeem et al, 2020). P. lilacinum is able to parasitize eggs and juveniles as well as sedentary females, releasing enzymes such as proteases and chitinases to degrade the first barrier of its hosts (eggshell or cuticle of females) (Yang et al, 2015;Ahmed & Monjil, 2019).…”

Macrotyloma axillare ‘Java’ and Crotalaria spp. combined with biocontrol agents for the management of Meloidogyne javanica in soybean

“…chlamydosporia (Ghahremani et al, 2019), P . lilacinum (Ahmed & Monjil, 2019), T . harzianum (Pocurull et al, 2020) and Bacillus spp.…”

“…chlamydosporia , the fungus parasitizes eggs and mobile forms of Meloidogyne spp. and degrades egg masses (Ahmed & Monjil, 2019).…”

“…The most efficient and widely used microorganisms are Pochonia chlamydosporia (Goddard) Zare & Gams (Ghahremani et al, 2019), Purpureocillium lilacinum (Thomn.) Samson (= Paecilomyces lilacinus ) (Ahmed & Monjil, 2019), Trichoderma spp. (Pocurull et al, 2020) and Bacillus spp.…”