AUTHOR=Zong Tong-Kai , Zhao Heng , Liu Xiao-Ling , Ren Li-Ying , Zhao Chang-Lin , Liu Xiao-Yong 

TITLE=Taxonomy and Phylogeny of Four New Species in Absidia (Cunninghamellaceae, Mucorales) From China

JOURNAL=Frontiers in Microbiology

VOLUME=12

YEAR=2021

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2021.677836

DOI=10.3389/fmicb.2021.677836

ISSN=1664-302X

ABSTRACT=<p>Four new species within the genus <italic>Absidia</italic>, <italic>A. globospora</italic>, <italic>A. medulla</italic>, <italic>A. turgida</italic>, and <italic>A. zonata</italic>, are proposed based on a combination of morphological traits, physiological features, and molecular evidences. <italic>A. globospora</italic> is characterized by globose sporangiospores, a 1.0- to 3.5-μm-long papillary projection on columellae, and sympodial sporangiophores. <italic>A. medulla</italic> is characterized by cylindrical to oval sporangiospores, a 1.0- to 4.5-μm-long bacilliform projection on columellae, and spine-like rhizoids. <italic>A. turgida</italic> is characterized by variable sporangiospores, up to 9.5-μm-long clavate projections on columellae, and swollen top of the projection and inflated hyphae. <italic>A. zonata</italic> is characterized by cylindrical to oval sporangiospores, a 2.0- to 3.5-μm-long spinous projection on columellae, and as many as eight whorled sporangiophores. Phylogenetic analyses based on sequences of internal transcribed spacer rDNA and D1–D2 domains of LSU rDNA support the novelty of these four species within the <italic>Absidia</italic>. All new species are illustrated, and an identification key to all the known species of <italic>Absidia</italic> in China is included.</p>