篮状菌属二个中国新记录种

Two species of Talaromyces new to China

【背景】调查我国滩涂土壤可培养真菌物种多样性,丰富我国真菌物种资源。【目的】报道我国篮状菌属2个产子囊孢子的新记录种。【方法】采用形态学和基于β-微管蛋白基因部分序列和rDNA ITS1-5.8S-ITS2序列系统学的多相分类学方法。【结果】分离鉴定出3种有性型篮状菌,即阿根廷篮状菌Talaromyces argentinensis(ZZ2-7-1h=CGMCC 3.16171)、巴塞篮状菌Talaromyces barcinensis(ZZ2-1-1=CGMCC 3.16172)和乌克兰篮状菌Talaromyces ucrainicus(JS11-5=CGMCC 3.16173),其中前2种为我国新记录种。阿根廷篮状菌在25℃生长适度,在37℃生长局限,形成絮状兼绳状菌落,其菌丝体白色夹杂浅粉色,产生稀少的橙黄色裸囊壳和壁具细密小刺的椭球形子囊孢子。巴塞篮状菌在25℃生长适度,在37℃不生长,形成绒状菌落,其菌丝体为白色兼黄色,裸囊壳稀少,较小,呈皮黄色,子囊孢子椭球形,壁具稀疏小刺。【结论】参考我国迄今已报道的篮状菌物种,确定阿根廷篮状菌和巴塞篮状菌为我国篮状菌属的新记录种。

[Background]A survey of the species diversity of culturable fungi in tidal flats of China was carried out,aiming at enriching the fungal species resource in China.[Objective]To report two Talaromyces species producing ascospores new to China.[Methods]A polyphasic taxonomic method,which integrated morphological identification and the phylogeny based on sequences ofβ-tubulin gene(BenA)and rDNA ITS1-5.8S-ITS2,was employed.[Results]Three teleomorphic Talaromyces species were isolated and identified,namely,T.argentinensis(ZZ2-7-1h=CGMCC 3.16171),T.barcinensis(ZZ2-1-1=CGMCC 3.16172)and T.ucrainicus(JS11-5=CGMCC 3.16173),among which,the former two are new to China.T.argentinensis grows well at 25℃ and is restricted at 37℃,presenting floccose and funiculose colonies with white mycelia mingled with a light pink tint and producing sparse orange-yellow gymnothecia with echinulate ellipsoidal ascospores.T.barcinensis grows well at 25℃ but does not grow at 37℃,presenting velutinous colonies with white and yellow mycelia and bearing sparse,small gymnothecia in buff-yellow color with ellipsoidal,sparsely echinulate ascospores.[Conclusion]In review of the Talaromyces species reported from China hitherto,we confirmed that T.argentinensis and T.barcinensis are two new records of China.