Morphology and secondary chemistry in species recognition of Parmelia omphalodes group evidence from molecular data with notes on the ecological niche modelling and genetic variability of photobionts

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F19%3A00519230" target="_blank" >RIV/86652079:_____/19:00519230 - isvavai.cz</a>

Result on the web

<a href="https://mycokeys.pensoft.net/article/38175/" target="_blank" >https://mycokeys.pensoft.net/article/38175/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3897/mycokeys.61.38175" target="_blank" >10.3897/mycokeys.61.38175</a>

Result language

angličtina

Original language name

Morphology and secondary chemistry in species recognition of Parmelia omphalodes group evidence from molecular data with notes on the ecological niche modelling and genetic variability of photobionts

Original language description

To evaluate the importance of morphological and chemical characters used in the recognition of species within the Parimelia omphalodes group, we performed phylogenetic, morphological and chemical analyses of 335 specimens, of which 34 were used for molecular analyses. Phylogenetic analyses, based on ITS rDNA sequences, show that P pinnatifida is distinct from P omphalodes and the most important difference between those species is the development of pseudocyphellae. In P pinnatifida, they are mostly marginal and form white rims along lobes margins, but laminal pseudocyphellae can develop in older parts of thalli and are predominantly connected with marginal pseudocyphellae. In contrast, in P. omphalodes laminal pseudocyphellae are common and arc predominantly not connected to marginal pseudocyphellae. Chemical composition of secondary lichen metabolites in both analysed species is identical and therefore this feature is not diagnostic in species recognition. Few samples of P. discordans, species morphologically similar to P. omphalodes and P. pinnatifida, were also included in the analyses and they are nested within the clade of P. omphalodes, despite the different chemistry (protocetraric acid present versus salazinic acid in P. omphalodes). All taxa of the P. omphalodes group occupy similar niches, but their potential distributions are wider than those currently known. The absence of specimens in some localities may be limited by the photobiont availability. Parmelia omphalodes and P. pinnatifida are moderately selective in photobiont choice as they form associations with at least two or three lineages of Trebouxia clade S. Parmelia pinnatifida, as well as P. discordans are associated with Trebouxia OTU S02 which seems to have a broad ecological amplitude. Other lineages of Trebouxia seem to be rarer, especially Trebouxia sp. OTU S04, which is sometimes present in P. pinnatifida. This study indicates the importance of extensive research including morphology, chemistry and analysis of molecular markers of both bionts in taxonomical studies of lichens.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

MycoKeys

ISSN

1314-4057

e-ISSN

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Volume of the periodical

61

Issue of the periodical within the volume

DEC 2019

Country of publishing house

BG - BULGARIA

Number of pages

36

Pages from-to

39-74

UT code for WoS article

000502025800002

EID of the result in the Scopus database

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