Abstract
While cultivating mushrooms, we must think about the problems posed by harmful microorganisms. It is important to know what microorganisms are harmful and to understand their features. In this paper, first the features of major harmful microorganisms are introduced, and then countermeasures against these harmful microorganisms are suggested. Secondly, results of studies on the influence of global warming on mushroom cultivation are introduced. The main results are 1) mycelia of Lentinula edodes, shiitake mushroom, are easily damaged by Trichoderma harzianum in warmer conditions of 33 degrees Celsius, 2) the isolation rates of T. harzianum from bed logs of L. edodes are higher in areas where daily maximum temperatures frequently exceed 30 degrees Celsius than in other areas, 3) Hypocrea lactea is spread by airborne infection, 4) edible vinegar cont
