The Role of Cellulase and Pectinase in Apricot Canker Caused by Hendersonula toruloidea and Phiaoacremonium aleophillium

Significant increasing in cellulase and pectinase activity were observed in response to infection with Hendersonula toruloidea and Phiaoacremonium aleophillium in apricot trees comparing with uninfected trees. Pectinase highest activity was recorded at the first week after inoculation with H. toruloidea （1.76 unit/g f.w.）, while cellulase highest activity was recorded after two weeks of inoculation with P. aleophillium （6.49 unit/g f.w.）. Peroxidase and polypolyphenol oxidase activity were significantly increased after inoculation with H. toruloidea and P. aleophillium, Peroxidase highest activity was recorded after 48 h of inoculation with H. toruloidea （1.77 unit/g f.w.）, while polypolyphenol oxidase highest activity was recorded after two weeks of inoculation with P. aleophillium （3.33 unit/g f.w.）. The result also showed that total phenol contents was significantly increased as a result to inoculation with H. toruloidea and P. aleophillium, highest total phenol contents was recorded after 48 h of inoculation with H. toruloidea （ 1.61 mg/g f.w. ）.

双间柱顶孢的研究进展

双间柱顶孢是一种暗色真菌,能感染植物和人类。主要存在于热带、亚热带地区。世界各地均有散在报道,泰国的感染最高,但我国很少有报道。为进一步认识该菌,现就双间柱顶孢的分类和命名学的研究进展、流行病学现状、形态特点、生物化学、致病性及治疗等情况进行综述。

圆酵母样亨德逊霉引起皮肤真菌病国内首例报告

报告国内首见圆酵母样亨德逊霉所致头癣、体癣 1例。 患者女性， 68岁，干部，曾旅居过缅甸、泰国。主诉头皮出现脱屑性斑片并断发、痒 3个月，皮损向左侧延及耳轮、耳背，右肩出现脱屑性斑片，痒 3周。 以上皮损处取材镜检均见粗细不等之淡棕色分支分隔菌丝，关节菌丝。断发镜检见发外孢子、发内关节菌丝。皮损处多次取材培养，均为同一菌落。葡萄糖蛋白胨琼脂基、 27℃培养，菌落生长良好。接种 3 d后 ,葡萄糖蛋白胨琼脂基可见白色绒毛状菌落， 10 d后逐渐变为灰褐色绒毛状菌落，背面为黑褐色，镜下见粗细不等之分支分隔菌丝、关节孢子、棕色厚壁孢子及烧瓶状分生孢子梗。关节孢子特征呈双轮廓。在含有放线菌酮葡萄糖蛋白胨琼脂基上菌落未见生长。鉴定为圆酵母样亨德逊霉 (Hendersonula toruloidea)。 本文首次用实验证明该菌可侵犯毛发。在血琼脂基 37℃培养，菌落呈酵母样，镜下见孢子形成的假菌丝。首次提出该菌为双相型真菌。