جداسازی آلودگی های قارچی و باکتریایی از اسپان قارچ صدفی در فصول مختلف

Seasonal variation in microbial contamination of Pleurotus ostreatus spawn

Eight fungal and one bacterial contaminants from naturally contaminated spawn of oyster mushroom were isolated and identified. These were Aspergillus ffavus var. cotumneris, A. niger, Alternaria alternata, Penicillium janthinellum, Penicillium spp., Rhizopus stotoniter, Trichoderma harzianum, T. viride and Bacillus brevis. Month-wise variation in spawn contaminations caused by various fungal and bacterial contaminants was observed. The contamination was the highest during the monsoon season (28.57%) followed by pre-monsoon (21.90%). Type of substrates was found to have influence on spawn contamination. Paddy grain based spawn recorded significantly lowest (15.00%) contamination as compared to wheat grain based (30.00%) spawn.

۲۱ اسفند ۱۳۹۱

 مقاله قارچ ۲۰۱۳: پلی پور های بیماری زا در آرژانتین

Pathogenic polypores in Argentina

1. M. Rajchenberg^1,*, 
2. G. Robledo²

Article first published online: 4 MAR 2013

Summary

We surveyed the polypore species associated with living hosts in Argentina. We reviewed the literature on polypores found in Argentina and, in addition with the study of unpublished herbarium material, present a list of 87 species decaying living trees in native forests and introduced plantations. The rot type, host(s), distribution and remarks are presented for each species. Among 87 species found, 71 produce a white rot and 16 a brown rot in wood; 61 species were exclusively found on native hosts and 7 on exotic, cultivated hosts, while 18 were found on both types of substrates; one species, Amylosporus campbellii, was exclusively found associated with grasses. For most cases, there are no pathological studies based on rot measurement and culture isolation to determine incidence and severity of the decay.

مقاله قارچ 2012: تاثیر افزودنی های خاک پوششی برای کشت قارچ خوارکی دکمه ای