Abstract
In the survey of mycobiota of mudflats in China, two new sexually reproducing Talaromyces sect. Talaromyces species were discovered and studied using a polyphasic approach. These species are named here Talaromyces haitouensis (ex-type AS3.160101T) and Talaromyces zhenhaiensis (ex-type AS3.16102T). Morphologically, T. haitouensis is distinguished by moderate growth, green-yellow gymnothecia, orange-brown mycelium, and echinulate ellipsoidal ascospores. T. zhenhaiensis is characterized by fast growth, absence of sporulation, cream yellow to naphthalene yellow gymnothecia and mycelium, and smooth-walled ellipsoidal ascospores with one equatorial ridge. The two novelties are further confirmed by phylogenetic analyses based on either individual sequences of BenA, CaM, Rpb2, and ITS1-5.8S-ITS2 or the concatenated BenA-CaM-Rpb2 sequences.
Highlights
IntroductionThe less-explored environments, for instance the mudflat areas along coastlines, are thought to be the new habitats for discovery of novel fungal taxa [2,3]
The estimated number of global fungal species may be in a range of 2.2 to 3.8 million, whereas the number of described species only accounts for 3–8%, which is about 120,000 [1].The less-explored environments, for instance the mudflat areas along coastlines, are thought to be the new habitats for discovery of novel fungal taxa [2,3]
The predominant fungal genera from marine environments are those that have long been considered as ubiquitously terrestrial, such as Aspergillus, Penicillium, and Talaromyces [2,4], whose species are considered as extraordinary producers of bioactive secondary metabolites, such as alkaloids, lactones, polyketides, etc., some of which may have great pharmaceutical prospects and many of which are new compounds [5,6]
Summary
The less-explored environments, for instance the mudflat areas along coastlines, are thought to be the new habitats for discovery of novel fungal taxa [2,3]. The predominant fungal genera from marine environments are those that have long been considered as ubiquitously terrestrial, such as Aspergillus, Penicillium, and Talaromyces [2,4], whose species are considered as extraordinary producers of bioactive secondary metabolites, such as alkaloids, lactones, polyketides, etc., some of which may have great pharmaceutical prospects and many of which are new compounds [5,6]. In a list of marine fungi, there are 47 species of Aspergillus, 39 species of Penicillium, and only 6 of Talaromyces [7]
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