Peltigera serusiauxii (Lecanoromycetes, Ascomycota), a new species from Papua New Guinea and Malaysia

Magain, Nicolas; Goffinet, Bernard; Simon, Antoine; Seelan, Jaya Seelan Sathiya; Medeiros, Ian D.; Lutzoni, François

doi:10.35535/pfsyst-2020-0009

Cited by 2 publications

(1 citation statement)

References 20 publications

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“…The photobiont partner is crucial in the whole symbiosis survival in these conditions since it participates through different mechanisms to mitigate or tolerate different stressors [ 6 , 66 ], which could be aggravated due to climate change [ 67 ]. This and other studies [ 14 , 37 , 68 , 69 , 70 , 71 , 72 ] highlight the importance of performing studies in still-understudied areas regarding biodiversity, which can be essential for studying adaptation strategies. Considering the particularity of the climatic factors in the studied environments and their influence in shaping photobiont distributions and their association patterns [ 23 , 73 , 74 ], the genetic diversity found in this work may not be widely distributed in the whole Andean landscape but is restricted to specific patches.…”

Section: Discussionmentioning

confidence: 69%

High Andean Steppes of Southern Chile Contain Little-Explored Peltigera Lichen Symbionts

Veas-Mattheos

Almendras

Pezoa

et al. 2023

JoF

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Peltigera lichens can colonize extreme habitats, such as high-elevation ecosystems, but their biodiversity is still largely unknown in these environments, especially in the southern hemi- sphere. We assessed the genetic diversity of mycobionts and cyanobionts of 60 Peltigera lichens collected in three high Andean steppes of southern Chile using LSU, β-tubulin, COR3 and ITS loci for mycobionts, and SSU and rbcLX loci for cyanobionts. We obtained 240 sequences for the different mycobiont markers and 118 for the cyanobiont markers, including the first report of β-tubulin sequences of P. patagonica through modifying a previously designed primer. Phylogenetic analyses, ITS scrutiny and variability of haplotypes were used to compare the sequences with those previously reported. We found seven mycobiont species and eleven cyanobiont haplotypes, including considerable novel symbionts. This was reflected by ~30% of mycobionts and ~20% of cyanobionts haplotypes that yielded less than 99% BLASTn sequence identity, 15 new sequences of the ITS1-HR, and a putative new Peltigera species associated with 3 Nostoc haplotypes not previously reported. Our results suggest that high Andean steppe ecosystems are habitats of unknown or little-explored lichen species and thus valuable environments to enhance our understanding of global Peltigera biodiversity.

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Section: Discussionmentioning

confidence: 69%

High Andean Steppes of Southern Chile Contain Little-Explored Peltigera Lichen Symbionts

Veas-Mattheos

Almendras

Pezoa

et al. 2023

JoF

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High species richness in the lichen genus Peltigera (Ascomycota, Lecanoromycetes): 34 species in the dolichorhizoid and scabrosoid clades of section Polydactylon, including 24 new to science

Magain¹,

Goffinet²,

Goward³

et al. 2023

persoonia

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Applying molecular methods to fungi establishing lichenized associations with green algae or cyanobacteria has repeatedly revealed the existence of numerous phylogenetic taxa overlooked by classical taxonomic approaches. Here, we report taxonomical conclusions based on multiple species delimitation and validation analyses performed on an eight-locus dataset that includes world-wide representatives of the dolichorhizoid and scabrosoid clades in section Polydactylon of the genus Peltigera. Following the recommendations resulting from a consensus species delimitation approach and additional species validation analysis (BPP) performed in this study, we present a total of 25 species in the dolichorhizoid clade and nine in the scabrosoid clade, including respectively 18 and six species that are new to science and formally described. Additionally, one combination and three varieties (including two new to science) are proposed in the dolichorhizoid clade. The following 24 new species are described: P. appalachiensis, P. asiatica, P. borealis, P. borinquensis, P. chabanenkoae, P. clathrata, P. elixii, P. esslingeri, P. flabellae, P. gallowayi, P. hawaiiensis, P. holtanhartwigii, P. itatiaiae, P. hokkaidoensis, P. kukwae, P. massonii, P. mikado, P. nigriventris, P. orientalis, P. rangiferina, P. sipmanii, P. stanleyensis, P. vitikainenii and P. willdenowii; the following new varieties are introduced: P. kukwae var. phyllidiata and P. truculenta var. austroscabrosa; and the following new combination is introduced: P. hymenina var. dissecta. Each species from the dolichorhizoid and scabrosoid clades is morphologically and chemically described, illustrated, and characterised with ITS sequences. Identification keys are provided for the main biogeographic regions where species from the two clades occur. Morphological and chemical characters that are commonly used for species identification in the genus Peltigera cannot be applied to unambiguously recognise most molecularly circumscribed species, due to high variation of thalli formed by individuals within a fungal species, including the presence of distinct morphs in some cases, or low interspecific variation in others. The four commonly recognised morphospecies: P. dolichorhiza, P. neopolydactyla, P. pulverulenta and P. scabrosa in the dolichorhizoid and scabrosoid clades represent species complexes spread across multiple and often phylogenetically distantly related lineages. Geographic origin of specimens is often helpful for species recognition; however, ITS sequences are frequently required for a reliable identification.

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Peltigera serusiauxii (Lecanoromycetes, Ascomycota), a new species from Papua New Guinea and Malaysia

Cited by 2 publications

References 20 publications

High Andean Steppes of Southern Chile Contain Little-Explored Peltigera Lichen Symbionts

High Andean Steppes of Southern Chile Contain Little-Explored Peltigera Lichen Symbionts

High species richness in the lichen genus Peltigera (Ascomycota, Lecanoromycetes): 34 species in the dolichorhizoid and scabrosoid clades of section Polydactylon, including 24 new to science

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