The resistance phenotypes of nine potato cultivars to five isolates of Alternaria solani, causal agent of early blight, were studied after inoculation and growth under greenhouse conditions. We identified potato cultivars with both susceptible and resistant phenotypes as well as A. solani isolates with varying degrees of aggressiveness. Two potato cultivars and two pathogen isolates were select...

The use of Trichoderma isolates with efficient antagonistic activity represents a potentially effective and alternative disease management strategy to replace health hazardous chemical control. In this context, twenty isolates were obtained from tomato rhizosphere and evaluated by their antagonistic activity against four fungal pathogens (Fusarium oxysporum f. sp. lycopersici, Alternaria altern...

Background: Chickpea wilt complex caused by several soil-borne pathogens is the major yield-reducing malady worldwide. Biological control one of best, low-cost and ecologically sustainable method for managing plant diseases pathogens. Methods: In this present investigation Panchagavya Trichoderma spp. were evaluated following poisoned food technique dual culture against causing i.e. Fusarium ox...

Essential oils from four plants, i.e. geranium, rosa, lemon and mint were tested for their activity in vitro and in vivo against Rhizoctonia solani and Fusarium oxysporum f. sp. phaseoli, the cause of root rot and wilt of beans. In vitro, they were found to have an inhibitory effect against the mycelial growth of R. solani and F. oxysporum f. sp. phaseoli. Complete inhibition in fungal growth w...

abstract temperature is one of the most important environmental factors affecting on physiological characteristics of fungi. in order to wide host range of macrophomina phaseolina (tassi) goildanich, verticillium dahliae kleb. and sclerotinia sclerotiorum (lib.) de bary, become aware from growth rate and productivity of resistant and survival form of these phyto-pathogens in different temperatu...

in plants, γ-aminobutyric acid (gaba) is synthesized by polyamine degradation pathway besides gaba shunt. aminoguanidine (ag) is a specific inhibitor of the key enzyme (diamine oxidase, dao) for gaba formation in polyamine degradation pathway. in this study, ag was applied to study the functions of polyamine degradation pathway on growth and gaba accumulation in germinating fava bean under hypo...

ABSTRACT The effect of seed meals derived from Brassica juncea, B. napus, or Sinapis alba on suppression of soilborne pathogens inciting replant disease of apple was evaluated in greenhouse trials. Regardless of plant source, seed meal amendment significantly improved apple growth in all orchard soils; however, relative differences in pathogen suppression were observed. All seed meals suppresse...

Although many Plant growth promoting rhizobacteria (PGPR) are used commercially, there is a need to explore more biocontrol agents combat various pathogens and sustain the productivity of crops. PGPRs inhabit rhizosphere region plant effective in managing pathogens. In this study, twenty-six PGPR isolates were screened in-vitro against fungal phytopathogens Bacteriological Laboratory, Departmen...

Present experiment was conducted at College of Horticulture, Bengaluru (KA) during year 2017–18 to study the cultural, morphological and biochemical variations among isolates pathogen Alternaria solani, causal agent early blight disease in tomato. The results revealed variation collected from different regions Karnataka state, India with regard colony characteristics viz., colour, mycelial grow...

Strawberry anthracnose caused by Colletotrichum species is an important disease that may cause significant economic losses. Based on multilocus sequence analyses and morphological characteristics, 64 isolates from strawberry samples collected nine Chinese provinces municipalities were identified as three species: fructicola (29 isolates), siamense (23 nymphaeae (12 isolates). Isolates of C. sho...