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Arthrobotrys oligospora ‐mediated biological control of diseases of tomato ( Lycopersicon esculentum Mill.) caused by Meloidogyne incognita and Rhizoctonia solani
Author(s) -
Singh U.B.,
Sahu A.,
Sahu N.,
Singh R.K.,
Renu S.,
Singh D.P.,
Manna M.C.,
Sarma B.K.,
Singh H.B.,
Singh K.P.
Publication year - 2013
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/jam.12009
Subject(s) - meloidogyne incognita , lycopersicon , rhizoctonia solani , biology , biological pest control , terra incognita , horticulture , rhizoctonia , agronomy , nematode , ecology
Aims To study the biocontrol potential of nematode‐trapping fungus A rthrobotrys oligospora in protecting tomato ( L ycopersicon esculentum M ill.) against M eloidogyne incognita and R hizoctonia solani under greenhouse and field conditions. Methods and Results Five isolates of the nematode‐trapping fungus A rthrobotrys oligospora isolated from different parts of India were tested against M eloidogyne incognita and Rhizoctonia solani in tomato ( L ycopersicon esculentum M ill.) 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. Conclusion 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.