Pseudomonas sp. DF41 is a biocontrol agent capable of suppressing Sclerotinia sclerotiorum-mediated stem rot of canola. Using transposon mutagenesis, we identified two mutants with greatly reduced antifungal (AF) activity. The first mutant had an insertion in gacS, forming part of the GacS/GacA regulatory system. The second mutation was in a gene involved in lipopeptide (LP) synthesis suggestin...

Sclerotinia sclerotiorum (Lib.) de Bary, the causal organism of stem rot of Brassica and over 500 host plants is distributed worldwide. Sclerotinia rot is menace to cultivation of oilseed Brassica crops in the world. Infection occurs on leaves, stems and pods at different developmental stages, causing seed yield losses of up to 80%, as well as significant reductions in oil content and quality. ...

The epidemiology of sclerotinia rot of carrot was investigated on carrot ‘Cellobunch’ during 1999 and 2000 in Ontario. Apothecia were first detected in the crop in early August to mid-September, after the carrot canopy closed and after 7–11 days with soil matric potentials between –0.1 and –0.4 bars and soil temperatures between 14 and 23 °C. Ascospores were first detected in mid-July to mid-Au...

Abstract The article presents the research data on effect of Fusarium blight, Phoma rot, and Sclerotinia blight plant productivity winter spring rapeseed, brown mustard, white mustard. As a result studies, we found that (the pathogens are fungi genus Link) was most harmful for mustard – affection by it significantly decreased productivity. At 4 points degree plants, harmfulness disease reached ...

Bacillus amyloliquefaciens strain NJZJSB3 has shown antagonism of several phytopathogens in vitro, especially Sclerotinia sclerotiorum. Both the broth culture and cell suspension of strain NJZJSB3 could completely protect the detached leaves of canola (Brassica napus) from S. sclerotiorum infection. In pot experiments, the application of strain NJZJSB3 cell suspension (10(8) CFU/ml) decreased t...

the response of five inbred sunflower seedling lines, including ac 4122, c, ha 89, ha 410, ha 411, to inoculation with sclerotinia sclerotiorum culture filtrate containing endogenous oxalic acid was compared with the exogenous application of synthetic oxalic acid. the reaction of seedlings was evaluated in terms of dry and fresh plant weights and the total chlorophyll concentration relative to ...

Sclerotinia stem rot caused by Sclerotinia sclerotiorum is one of the most devastating diseases in many important crops including Brassica napus worldwide. Quantitative resistance is the only source for genetic improvement of Sclerotinia-resistance in B. napus, but the molecular basis for such a resistance is largely unknown. Here, we performed dynamic transcriptomic analyses to understand the ...

Macrophomina phaseolina and Sclerotinia sclerotiorum are two significant fungal pathogens of sunflower. M. causes charcoal rot ashy stem blight in several important crop species. white mold disease which can occur as middle stalk rot, head premature plant death. Due to the wide host range their survival structures, rotation cannot provide sufficient protection against them. In our experiment, w...

Sclerotinia sclerotiorum (Lib.) de Barry is a soil habitat plant pathogen, able of infecting more than five hundred host spp., all over the world and doing crucial role in reduce yield economically important crops. rot also known as stem rot, incited by S. certical disease chickpea. We done an experiment which, number fungal isolation, purification, identification pathogenicity from infected ma...

Fungal pathogens are liable for a wide part of damages in agriculture economy. In the present research a survey was made to study occurrence of Sclerotinia species the causal agent of stem rot in Cauliflower, through agar disc method and dual culture bioassays. The number of apothecia reduced with decrease in temperature and relative humidity. Infection is dependent on long periods of leaf wetn...