fusarium root and foot rot of wheat is caused by the fungus gibberella zeae (fusarium graminearum). this disease causes significant yield loss under infested soil and favourable condition. the aim of this study was to evaluate the efficacy of selected fungus strains against the wheat soil-borne pathogen f. graminearum under greenhouse and field conditions. the most potent isolates were 3 isolat...

Different species of Trichoderma especially T. harzianum (Th2 biotype in Europe and Th4 in America) considered as causal agent of green mould disease on button mushroom (Agaricus bisporus) casing beds. In this study, 100 fungal isolates were collected and purified from different mushroom growing units in Tehran province and Urmia (NW Iran). Totally, 60 isolates of T. harzianum, 27 isolates of T...

Fusarium graminearum Schwabe causes Fusarium head blight (FHB), a devastating disease that leads to extensive yield and quality loss of wheat and other cereal crops. Twelve isolates of F. graminearum were collected from naturally infected spikes of wheat from Assiut Egypt. These isolates were compared using SRAP. The results indicated distinct genetic groups exist within F. graminearum, and dem...

biological efficacy of trichoderma species may differ due to variations in ecosystems. this study was conducted to assess the biocontrol efficacy of some native trichoderma isolates against fusarium oxysporum, an important causal agent of potato wilt disease under laboratory and greenhouse conditions in shahrood agricultural research center, shahrood, iran during 2006-2007. fourteen isolates we...

The diversity of Trichoderma spp. was investigated in alkaline soils of pistachio orchards at different geographic areas in Kerman province, Iran. A total of 161 Trichoderma isolates were obtained and identified at the species level by their morphological characters and sequence analysis of their internal transcribed spacer (ITS) and tef1-α genomic regions. Totally, five species of Trichoderma ...

Rising carbon dioxide (CO2) concentrations in atmosphere have a significant impact on plant growth and metabolism. Many promoting microbes play an important role maintaining vitality by facilitating nutrient translocation under adverse conditions. This study was carried out to investigate the effects of elevated CO2 parameters (height seedlings, increment height, collar diameter number leaves) ...

Research was carried out to evaluate the effectiveness of the biological control of the Botrytis gray mould, caused by Botrytis cinerea Pers., one of the most important fungal diseases of the tomato (Lycopersicon esculentum Mill.). Biological control was performed by using Trichoderma harzianum Rifai, an antagonist that is a naturally occurring fungus found on some plants and in the soil worldw...

Fusarium head blight is one of the most severe diseases of small grain cereals and is caused by several toxigenic Fusarium species. Yield losses and mycotoxin accumulation in grain are caused by the disease. F. sporotrichioides and F. poae produce type A trichothecenes. Saprophyte fungal antagonists, especially Trichoderma harzianum, are effective biocontrol agents against several fungal soil-b...

in the present study, the diversity of trichoderma spp. was investigated in alkaline pistachio soils at different geographic area in kerman province, iran. a total of 161 trichoderma isolates were obtained and identified at the species level by analysis of their morphological characters and sequence analysis of their internal transcribed spacer regions of the rrna cluster and tef1 genes as phyl...