Arthrobotrys oligospora-mediated biological control of diseases of tomato (Lycopersicon esculentum Mill.) caused by Meloidogyne incognita and Rhizoctonia solani
Article first published online: 31 OCT 2012
© 2012 The Society for Applied Microbiology
Journal of Applied Microbiology
Volume 114, Issue 1, pages 196–208, January 2013
How to Cite
Singh, U.B., Sahu, A., Sahu, N., Singh, R.K., Renu, S., Singh, D.P., Manna, M.C., Sarma, B.K., Singh, H.B. and Singh, K.P. (2013), Arthrobotrys oligospora-mediated biological control of diseases of tomato (Lycopersicon esculentum Mill.) caused by Meloidogyne incognita and Rhizoctonia solani. Journal of Applied Microbiology, 114: 196–208. doi: 10.1111/jam.12009
- Issue published online: 12 DEC 2012
- Article first published online: 31 OCT 2012
- Accepted manuscript online: 11 SEP 2012 06:18AM EST
- Manuscript Revised: 28 AUG 2012
- Manuscript Accepted: 23 AUG 2012
- Manuscript Received: 26 JUN 2012
- Arthrobotrys oligospora ;
- Meloidogyne incognita ;
- nematode-trapping fungi;
- Rhizoctonia solani ;
- root knot
To study the biocontrol potential of nematode-trapping fungus Arthrobotrys oligospora in protecting tomato (Lycopersicon esculentum Mill.) against Meloidogyne incognita and Rhizoctonia solani under greenhouse and field conditions.
Methods and Results
Five isolates of the nematode-trapping fungus Arthrobotrys oligospora isolated from different parts of India were tested against Meloidogyne incognita and Rhizoctonia solani in tomato (Lycopersicon esculentum Mill.) plants grown under greenhouse and field conditions. Arthrobotrys oligospora-treated plants showed enhanced growth in terms of shoot and root length and biomass, chlorophyll and total phenolic content and high phenylalanine ammonia lyase activity in comparison with M. incognita- and R. solani-inoculated plants. Biochemical profiling when correlated with disease severity and intensity in A. oligospora-treated and untreated plants indicate that A. oligospora VNS-1 offered significant disease reduction in terms of number of root galls, seedling mortality, lesion length, disease index, better plant growth and fruit yield as compared to M. incognita- and R. solani-challenged plants.
The result established that A. oligospora VNS-1 has the potential to provide bioprotection agents against M. incognita and R. solani.
Significance and Impact of the Study
Arthrobotrys oligospora can be a better environment friendly option and can be incorporated in the integrated disease management module of crop protection. Application of A. oligospora not only helps in the control of nematodes but also increases plant growth and enhances nutritional value of tomato fruits. Thus, it proves to be an excellent biocontrol as well as plant growth promoting agent.