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Hispidopannaria and Phormopsora, two new and small, but evolutionary old Pannariaceae lichen genera from southern South America

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Title
Hispidopannaria and Phormopsora, two new and small, but evolutionary old Pannariaceae lichen genera from southern South America
Other Titles
Hispidopannaria and Phormopsora, 남부 남미지역에 서식하는 두개의 새로운 지의류속
Authors
Elvebakk, Arve
Hong, Soon Gyu
Park, Chae Haeng
Subject
Mycology
Keywords
Endemism; Evolution; Pannaria; Photobionts; Phylogeny; Taxonomy
Issue Date
2020-11
Citation
Elvebakk, Arve, Hong, Soon Gyu, Park, Chae Haeng. 2020. "Hispidopannaria and Phormopsora, two new and small, but evolutionary old Pannariaceae lichen genera from southern South America". MYCOLOGICAL PROGRESS, 19(11): 1353-1364.
Abstract
Based on phylogenetic analyses of the ITS, nuclear large subunit rRNA, mitochondrial small subunit rRNA, and MCM7 genes, species previously treated as Pannaria hispidula and P. isabellina are shown to represent two new Pannariaceae genera, Hispidopannaria and Phormospsora. Each genus forms monophyletic clades, both in multilocus phylogeny and in single gene phylogenies. In the multilocus phylogeny, both genera together formed a monophyletic clade as a sister group to the genus Pannaria, whereas this monophyly was not maintained in single gene phylogenies. Hispidopannaria differs from Pannaria in having large, geotropically arranged, hispid squamules, IKI+ internal ascus structures, and perispores with irregular pulvinate verrucae and apical extensions. The southern South American, TLC-negative species H. hispidula is generitype and is concentrated to trunks in the evergreen Nothofagus forests of south-central Chile. Psoroma dasycladum, a similar endemic species from the Juan FernandezArchipelago, is also transferred to Hispidopannaria. Phormopsora is monospecific and is the only member of Pannariaceae which contains norstictic and connorstictic acids. Its thallus of large, branched squamules with large, foliose cephalodia and its bullate perispores with long-apiculate apical extensions also separate it from Pannaria. Its species, Phormopsora isabellina, has a similar distribution as H. hispidula on the South American mainland, but is more widespread. The position of these two small genera as a sister group to the large and diverse genus Pannaria, indicates a long period of slow evolutionary rate, with the island endemic Hispidopannaria dasyclada as an exception. Reproductive isolation and photobiont specialization are partly suggested to explain their slow evolution and lack of surviving speciation.
URI
https://repository.kopri.re.kr/handle/201206/11961
DOI
http://dx.doi.org/10.1007/s11557-020-01632-1
Appears in Collections  
2020-2020, Ecophysiology of KGI terrestrial organisms to reveal mechanisms of adaptation to changing environment (20-20) / Lee, Hyoungseok (PE20170)
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