6533b834fe1ef96bd129cd8d

RESEARCH PRODUCT

Sareomycetes: more diverse than meets the eye

James K. MitchellLuis QuijadaIsaac Garrido-benaventDonald H. Pfister

subject

0106 biological sciences0301 basic medicineCryptic diversityZoology010603 evolutionary biology01 natural sciencesCape verde03 medical and health sciencesType (biology)New taxaGenusFongsMycologylcsh:BotanySareaSareaEcology Evolution Behavior and SystematicsCriptògamesEcological nichebiologyResearchResinicolous fungibiology.organism_classificationAgricultural and Biological Sciences (miscellaneous)Atrozythialcsh:QK1-989Phylogeography030104 developmental biologyIntegrative taxonomyPycnidiumZythia

description

AbstractSince its resurrection, the resinicolous discomycete genus Sarea has been accepted as containing two species, one with black apothecia and pycnidia, and one with orange. We investigate this hypothesis using three ribosomal (nuITS, nuLSU, mtSSU) regions from and morphological examination of 70 specimens collected primarily in Europe and North America. The results of our analyses support separation of the traditional Sarea difformis s.lat. and Sarea resinae s.lat. into two distinct genera, Sarea and Zythia. Sarea as circumscribed is shown to conservatively comprise three phylospecies, with one corresponding to Sarea difformis s.str. and two, morphologically indistinguishable, corresponding to the newly combined Sarea coeloplata. Zythia is provisionally maintained as monotypic, containing only a genetically and morphologically variable Z. resinae. The new genus Atrozythia is erected for the new species A. klamathica. Arthrographis lignicola is placed in this genus on molecular grounds, expanding the concept of Sareomycetes by inclusion of a previously unknown type of asexual morph. Dating analyses using additional marker regions indicate the emergence of the Sareomycetes was roughly concurrent with the diversification of the genus Pinus, suggesting that this group of fungi emerged to exploit the newly-available resinous ecological niche supplied by Pinus or another, extinct group of conifers. Our phylogeographic studies also permitted us to study the introductions of these fungi to areas where they are not native, including Antarctica, Cape Verde, and New Zealand and are consistent with historical hypotheses of introduction.

10.1186/s43008-021-00056-0https://hdl.handle.net/10550/78738