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Use of Rhizobacteria in the Control of Root Rot–Root Knot Disease Complex of Mungbean
Author(s) -
Ali Siddiqui I.,
EhetshamulHaque S.,
Shahid Shaukat S.
Publication year - 2001
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1046/j.1439-0434.2001.00630.x
Subject(s) - macrophomina phaseolina , biology , rhizoctonia solani , rhizosphere , root rot , rhizobacteria , meloidogyne javanica , fusarium solani , bacillus subtilis , horticulture , mycelium , root knot nematode , population , biological pest control , botany , agronomy , nematode , bacteria , ecology , genetics , demography , sociology
Thirty‐two isolates of Pseudomonas aeruginosa and a Bacillus subtilis strain were isolated from rhizosphere and rhizoplane of four wild and 15 cultivated plants. Biocontrol and growth‐promoting potentials of the bacterial isolates were tested under laboratory, greenhouse and field conditions. The bacterial isolates not only exhibited nematicidal activity by killing the second stage larvae of Meloidogyne javanica to a varying degree but also produced inhibition zones by inhibiting the radial growth of Macrophomina phaseolina, Fusarium solani and Rhizoctonia solani . Strain IE‐2 and IE‐6 of P. aeruginosa also lysed the fungal mycelium. P. aeruginosa and B. subtilis used as seed dressing or as soil drench significantly suppressed root rot–root knot infection and nematode population densities under greenhouse and field conditions and thereby enhanced plant growth and yield in mungbean.