曲霉及其有性型散囊菌的新分类群和新记录种

在收集和分离我国曲霉工作中,发现一个国内新纪录和三个新分类群:1.埃及曲霉,国内新记录。2.合阳曲霉新种,与爪甲曲霉相近,但颜色和具刺不育菌丝有所不同。3.温特曲霉烟色变种,与原变种的主要区别在于颜色为蓝灰色并具异常膨大的梗基。4.瘤突散囊菌新种,其子囊孢子的纹饰独特,凸面具粗疏瘤状突起。

NEW TAXA AND A NEW RECORD OF ASPERGILLUS AND EUROTIUM

Three new taxa and one new record of Aspergillus and Eurotium are reported: 1) Aspergillus egyptiacum Moubasher & Moustafa, a new record in China.2)Aspergillus heyangensis Qi, Sun & Wang sp. nov.: Colonies on Czapek's agar growing restrictedly, 27-30mm diam in 12 -14 days at 25℃; plane, velvety; in dull green shades near Grayish Olive when young, becoming Saccardo's Umber to Olive Brown in age; sterile spicular hyphae present, slender, erect and slanting upward; exudate lacking; reverse uncolored to slightly brown. Conidial heads small, globose to radiate; conidiophores arise from submerged mycelia, stipes colorless, smooth; vesicles dome like to flask shaped; aspergilla biseriate; conidia globose to subglobose, rough walled; cleistothecia and hulle cells not present. No growth at 37℃. This species belongs to Sect. Nidulantes. It is close to Aspergillus unguis, but differs from the latter by: 1)color and shape of conidial heads, 2) the slender spicular hyphae, 3) no growth at 37℃, and 4) strictly anamorphic. The specific epithet refers to the type locality.3)Aspergillus wentii var. fumeus Qi & Sun var. nov.: This variety shares essentially the same colony appearance fand microscopic features with the species. It differs from the latter primarily in conidial color (Dark Bluish Green to Dusky Blue Green) and the presence of irregular inflated metulae in some large heads.4)Eurotium tuberculatum Qi & Sun sp. nov. (anamorph: Aspergillus tuberculatus Qi & Sun sp. nov.): Colonies on 20% sucrose Czapek's agar 25-35mm diam in 12-14 days at 25℃; marginal area irregular, loosely flocculent, deep; predominantly red orange to rusty red, near Vinaceous Rufous to Hay's Russet due to the presence of numerous ferruginous encrusted hyphae; cleistothecia very abundant, yellow; conidial structures unevenly scattered, glaucous; reverse orange brown. Cleistothecia spherical; ascospores lenticular, without crests and ridges, but with surface coarsely tuberculate, 5-6×4-4.8μm; conidial heads globose to radiate; conidiophores borne from surface or aerial hyphae, stipes smooth, colorless; vesicles flask shaped, small vesicles representing slight enlargements of the stipe apices; aspergilla uniseriate; conidia globose, ovate to elliptical, spinulose. No growth at 37℃. Judged from similarities in colony morphology and microscopic features, this species has its close affinity with Eurotium rubrum. But it can be readily distinguished from the latter by its distinctive ascospore ornamentation. Therefore, it is described as a new species and hence the specific epithet.