Trentepohlialean algae (Trentepohliales, Ulvophyceae) show preference to selected mycobiont lineages in lichen symbioses

Magdalena Kosecka , Agnieszka Jabłońska , Adam Flakus , Pamela Rodriguez-Flakus , Martin Kukwa , Beata Guzow-Krzemińska


The main aims of this work were to assess phylogenetic relationships of the trentepohlialean photobionts in tropical, mainly sterile lichens collected in Bolivia, to examine their genetic diversity, host specificity, and the impact of habitat factors on the occurrence of Trentepohliales. Based on rbcL marker analysis we constructed a phylogenetic tree with eight major clades of Trentepohliales, of which in seven free‐living species are intermingled with lichenized ones. Our analyses show that the studied photobionts are scattered across the phylogenetic tree and algae from temperate and tropical regions do not form monophyletic groups, except of one clade which seems to be restricted to the tropics. There is no significant occurrence pattern of lichenized Trentepohliaceae on a specific substratum, except Cephaleuros spp. and Phycopeltis spp. which are restricted to leaves, while some clades with lichenized algae may be specialized to tree bark and wood. Moreover, we found two patterns of associations: first, closely related algae can associate with distantly related mycobionts, second, some other trentepohlioid algae associate with selected lineages of fungi (e.g., Arthoniaceae or Graphidaceae). We also found that some lineages of photobionts are even more selective and associate exclusively with one species (e.g., Dichosporidium nigrocinctum, Diorygma antillarum) or closely related lichen‐forming fungi (Herpothallon spp.). Concluding, we found that occurrence of some trentepohlialean photobionts may correlate with the particular type of the mycobiont.
Publication typeIn press (online first, early view)
Author Magdalena Kosecka (FB/DPTNC)
Magdalena Kosecka,,
- Department of Plant Taxonomy and Nature Conservation
, Agnieszka Jabłońska (FB/DPTNC)
Agnieszka Jabłońska,,
- Department of Plant Taxonomy and Nature Conservation
, Adam Flakus
Adam Flakus,,
, Pamela Rodriguez-Flakus
Pamela Rodriguez-Flakus,,
, Martin Kukwa (FB/DPTNC)
Martin Kukwa,,
- Department of Plant Taxonomy and Nature Conservation
, Beata Guzow-Krzemińska (FB/DPTNC)
Beata Guzow-Krzemińska,,
- Department of Plant Taxonomy and Nature Conservation
Journal seriesJournal of Phycology, ISSN 0022-3646, e-ISSN 1529-8817, (N/A 100 pkt)
Issue year2020
Noonline first
Publication size in sheets1.70
Keywords in EnglishBolivia, lichen-forming fungi, Neotropics, photobionts, phylogeny, rbcL, specificity, selectivity, symbiotic associations, 18S rDNA
ASJC Classification1104 Aquatic Science; 1110 Plant Science
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 05-05-2020, ArticleFromJournal
Publication indicators WoS Citations = 0.000; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.197; WoS Impact Factor: 2018 = 2.831 (2) - 2018=3.063 (5)
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