Biological characteristics and cultivation of wild Auricularia cornea recorded in Southern, Vietnam
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Abstract
To meet the increasingly diverse demand for edible mushrooms and stabilize the supply, it is necessary to domesticate new wild edible mushroom species. Two isolates of Auricularia cornea collected from the forest in the Southeast of Vietnam were studied to assess their physiological characteristics and cultivation potential on rubber sawdust. The findings indicated that ABI-F000301 (white strain) and ABI-F000302 (brown strain) exhibited similar morphological traits, confirming their classification as Auricularia cornea based on phylogenetic analysis utilizing the ITS marker. Both strains demonstrated robust growth in MCM broth, maintaining a pH between 6 and 7 and thriving at 30ºC. The most effective substrates for mushroom propagation were identified as oat and paddy grain. The mycelial colonization times for these strains in a 1 kg nylon bag were 29.87 ± 1.19 days for the white strain and 31.6 ± 2.03 days for the brown strain. Incorporating rice bran and corn bran at a ratio of 1.5% into the rubber sawdust yielded results of 542.23 ± 121.72 g/kg substrate for ABI-F000301 and 671.41 ± 127.38 g/kg substrate for ABI-F000302. The biological efficiencies achieved were 84.8 ± 19.02% for the white strain and 102.45 ± 19.9% for the brown strain. These results demonstrate that both strains of Auricularia cornea possess considerable potential for mass cultivation.
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References
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