Mycosystema 3: 9-18, 1990


TAXONOMIC NOTES ON PENICILLIUM MARNEFFEI

QI ZU-TONG, SUN ZENG-MEI, WANG DUAN-LI, LI JU-SHANG and WEI XING-GUO
Systematic Mycologh & Lichenology Laboratory, Institute of Microbiology, Academia Sinica, Beijing


ABSTRACT: Thirty-four isolates of fungi (2 from man and 32 from bamboo rats in jGuangxi Zhuang Autonomous jRegion) have been identified on the basis of their morphological and cultural characteristics. IMI 68794 (Penicillium marneffei, ex-type), ATCC 24100 and ATCC 10438 (originally identified as Penicillium marneffei and P. diversum var. aureum respectively but were both reclassified as Pencillium primulinum by Pitt because of their yellow mycelial growth on MEA) were used for comparison. Despite some striking differences in cultural features (many isolates develop yellow encrusted hyphae which influence the colony appearance), all 34 isolates have been identified as Penicillium marneffei Segretain et al. because of the detail of their penicilli, the purple-red pigmentation, and the formation of yeast-like cells at 37íŠ. The morphological characters of ATCC 24100 conform to those of P. marneffei as well. Therefore, ATCC 24100 should still be retained as P. marneffei. ATCC 10438, although it also develops yellow encrusted hyphae, possesses a quite different pattern of penicilli. It does not produce a purple-red pigment, nor does it grow at 37íŠ.