Wang Bo, Yu Yun, Wang Long
College of Forestry, Northwest A&F University, Yangling, Shaanxi, China.
College of Life Sciences, Yangtze University, Jingzhou, Hubei, China.
PLoS One. 2014 Jul 2;9(7):e101454. doi: 10.1371/journal.pone.0101454. eCollection 2014.
Two new Penicillium species isolated from plant leaves are reported here, namely, P. fusisporum (type strain AS3.15338T = NRRL 62805T = CBS 137463T) and P. zhuangii (type strain AS3.15341T = NRRL 62806T = CBS 137464T). P. fusisporum is characterized by fast growth rate, apical-swelling monoverticillate penicilli, verrucose stipes, fusiform to oblong conidia about 3.5-4×2-2.5 µm and cinnamon-colored sclerotia. While P. zhuangii presents a moderate growth rate, it also bears apical-swelling monoverticillate penicilli but its stipes are smooth-walled, and produces ovoid to globose smooth-walled conidia about 3-3.5 µm. Both species belong to section Aspergilloides, and P. fusisporum is related to "P. thomii var. flavescens", while P. zhuangii is morphologically similar to P. lividum. Phylogenetic analyses of sequences of calmodulin and beta-tubulin genes both show that the two new taxa form distinct monophyletic clades.
本文报道了从植物叶片中分离出的两个青霉新种，即梭孢青霉（模式菌株AS3.15338T = NRRL 62805T = CBS 137463T）和庄氏青霉（模式菌株AS3.15341T = NRRL 62806T = CBS 137464T）。梭孢青霉的特征为生长速度快、顶端膨大的单轮生帚状枝、具瘤的梗、3.5 - 4×2 - 2.5 µm的梭形至椭圆形分生孢子以及肉桂色菌核。而庄氏青霉生长速度适中，同样具有顶端膨大的单轮生帚状枝，但其梗壁光滑，产生3 - 3.5 µm的卵形至球形、壁光滑的分生孢子。这两个种均属于曲霉状组，梭孢青霉与“黄萎汤姆青霉变种”相关，而庄氏青霉在形态上与暗绿青霉相似。钙调蛋白和β - 微管蛋白基因序列的系统发育分析均表明这两个新分类单元形成了不同的单系分支。
