Species assemblages of insular Caribbean Sticta (lichenized Ascomycota: Peltigerales) over ecological and evolutionary time scales

Mercado-Díaz, Joel A.; Lücking, Robert; Moncada, Bibiana; St. E. Campbell, Keron C.; Delnatte, Cesar; Familia, Lemuel; Falcón-Hidalgo, Banessa; Motito-Marín, Angel; Rivera-Queralta, Yoira; Widhelm, Todd J.; Thorsten Lumbsch, H.

doi:10.1016/j.ympev.2023.107830

Cited by 1 publication

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“…A molecular–phylogenetic approach is changing our view on the biogeographic patterns of lichens, revealing diverse lineages of cryptic or overlooked species within some species previously considered to be widespread [ 5 , 6 , 7 , 8 , 9 , 10 ] and demonstrating that high diversity and endemism in insular lichens are common phenomena. Regional endemism is known, e.g., for Papua New Guinea [ 11 ], Macaronesia [ 12 , 13 ], Galapagos [ 14 , 15 ], Hawaii [ 16 ], Socotra [ 17 ], the Caribbean [ 18 ], Madagascar [ 19 ], Japan [ 20 , 21 ], New Zealand [ 22 ], and Tasmania [ 23 ]. The mentioned studies show that the level of island endemism in some lichen genera can reach up to 100%.…”

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confidence: 99%

Multilocus Molecular Phylogeny of the Umbilicaria aprina Group (Umbilicariaceae, Lichenized Ascomycota) Supports Species Level and Neo-Endemic Status of Umbilicaria krascheninnikovii

Davydov,

Himelbrant,

Kuznetsova

et al. 2024

Plants

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The Northeast Asian endemic species of lichen-forming fungus Umbilicaria krascheninnikovii is herein discussed in the global context of biogeography and phylogeny of the U. aprina group. The name U. krascheninnikovii has been erroneously used by lichenologists for Umbilicaria spp. from high latitudes or altitudes worldwide, as there are omphalodisc apothecia and rough “crystals” of a necral layer on the upper surface. To test the monophyly and phylogenetic relationships within the U. aprina group, four independent DNA regions (nrITS/5.8S, RPB2, mtLSU, and mtSSU) were used for six rare species, including a dozen specimens of U. krascheninnikovii from its locus classicus in Kamchatka. The study is based on the phylograms obtained using maximum likelihood and a Bayesian phylogenetic inference framework. As a result of phylogenetic and biogeographic analyses, it was shown that U. krascheninnikovii is a neo-endemic of the areas of modern volcanism in Kamchatka, Japan, as well as in the Kurile Islands, where this species was recorded for the first time. The morphology of U. krascheninnikovii is herein described and illustrated. Increasing the role of the sexual process and reducing asexual thalloconidiogenesis are shown to be apomorphic traits in the U. aprina group. The combination of sexual and asexual reproduction provides adaptive advantages in changing environmental conditions.

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