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Vargas-Isla R.,National Institute of Amazonian Research | Capelari M.,Institute Botanica | Menolli N.,Institute Botanica | Menolli N.,Federal University of São Paulo | And 3 more authors.
Mycoscience | Year: 2015

Panus strigellus was first recorded in Amazonas State of Brazil. This edible mushroom has macroscopic characteristics similar to those of P. lecomtei. In this study, we used evidence obtained from a morphological comparison, molecular analyses and mating tests to clarify the taxonomic status of P. strigellus and show differences compared to the sympatric species of Panus. In addition, this paper discusses and reports some morphological characteristics of P. strigellus. The tetrapolar mating system of P. strigellus and the incompatibility between P. lecomtei and P. strigellus was confirmed. The geographical distributions of both species in the Americas are presented. © 2015 The Mycological Society of Japan.

Parada R.Y.,Tottori University | Murakami S.,The Tottori Mycological Institute | Shimomura N.,Tottori University | Otani H.,Tottori University
Journal of Phytopathology | Year: 2012

The protective effect of autoclaved water extract from spent mushroom substrate (AWESMS) and autoclaved spent mushroom substrate (ASMS) of the edible mushrooms Lyophyllum decastes (hatakeshimeji) and Pleurotus eryngii (eringi) against fungal and bacterial diseases was investigated on cucumber plants. When the plants were treated with AWESMS by spraying the first true leaves and inoculated with the target pathogen 7days later, AWESMS of hatakeshimeji significantly reduced powdery mildew by Podosphaera xanthii, angular leaf spot by Pseudomonas syringae pv. lachrymans, but not Corynespora leaf spot by Corynespora cassiicola and scab by Cladosporium cucumerinum. When the plants were grown in a mixture (1:2, v/v) of ASMS of hatakeshimeji and soil, a significant disease reduction was observed in powdery mildew, scab and angular leaf spot. The protective effect was also observed against anthracnose on plants treated with AWESMS or on plants grown in a mixture of ASMS of eringi (1:3, v/v). Our results indicated that AWESMS and ASMS, independently of the mushroom type, provide a protective effect against fungal and bacterial diseases. Therefore, SMS should be considered an easily available source of active compounds to protect plants from fungal and bacteria infections, helping alleviate the waste disposal problem in the mushroom industry and creating an environmentally friendly method to reduce plant pathogens. © 2012 Blackwell Verlag GmbH.

Parada R.Y.,Tottori University | Murakami S.,The Tottori Mycological Institute | Shimomura N.,Tottori University | Egusa M.,Tottori University | Otani H.,Tottori University
Crop Protection | Year: 2011

The protective effect of fresh spent mushroom substrate (SMS) of hatakeshimeji (Lyophyllum decastes Sing.), a popular culinary-medicinal mushroom, and its water extract against anthracnose of cucumber was investigated. Plants were treated with water extract from SMS or autoclaved water extract by spraying the whole plant or by dipping the first true leaf, and inoculated with Colletotrichum orbiculare seven days later. Plants treated with either of the extracts showed a significant reduction of necrotic lesions. On the other hand, when plants were grown in a mixture (1:2, v/v) of SMS or autoclaved SMS and soil, a disease reduction of over 70% was observed in autoclaved SMS. The water extract showed no antifungal activity against spore germination and mycelial growth of the pathogen. Real-time PCR analyses of chitinase and β-1,3-glucanase genes revealed a significant increase of expressions after 24 h of pathogen inoculation in water extract-treated plants compared with the control plants. These results suggest that water-soluble and heat-stable compounds in SMS enhance the state of systemic acquired resistance and protect cucumbers from anthracnose. Thus, the use of SMS for disease control may offer a new technology for the recycling and management of waste from mushroom cultivation. © 2010 Elsevier Ltd.

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