Abstract
The purpose of this study was to determine the mating type system and initiation of fruiting body development of a medicinal mushroom Phellinus linteus from Cambodia. Theevidence of fungal crossing analysis revealed that Cambodian P. linteus was a heterothallic basidiomycete and had a bipolar mating system. Clamp connection and peg cells formed on the dikaryons were possibly regulated by A and B genes. Initiation of the fruiting body was observed first on the Malt Extract Agar (MEA). In addition, we also found that fruiting bodies rapidly initiated on wood blocks. Unfortunately, their fruiting body initials were arrested before the stage of fruiting body maturation. Hence, a mushroom cultivation approach was chosen for observing the proper fruiting body development. The results showed that most mushroom spawns inoculated by dikaryons had initiated the small size(1.5 to 4.0 cm in diameter) fruiting bodies with a semicircular-shape. Fruiting body was not form in the mushroom spawns inoculated by monokaryons. Key words: Phellinus linteus, fruiting body, mating system, heterothallic basidiomycete.
Highlights
IntroductionSome mushrooms are medicinally important because they produce substances that express potential medicinal benefits
Mushroom production worldwide exceeds more than 10 million metric tons per year
We found that 97% (291/300) of inoculated mushroom spawns had fruiting body initials present. 3% (9/300) of inoculated mushroom spawns were contaminated during fruiting body development. 94% (188/200) of controls did not have the initiation of fruiting body while other mushroom spawns were infected by unusual fungus
Summary
Some mushrooms are medicinally important because they produce substances that express potential medicinal benefits. These medicinal mushrooms are interesting because they have been shown to have profound health promoting benefits. Most researchers have focused on any existing therapeutic effects of extracted medicinal mushrooms. The biological components such as polysaccharides, peptides and anti-oxidants have been determined and documented (Shon and Nam, 2001; Wasser, 2002; Zhang et al, 2007; Song and Van Griensven, 2008). Medicinal mushrooms have not been successfully cultivated on farms because they have high host specificity (Fisher and Binder, 2004; Hiroto et al, 2006)
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