New lichen species and lichen reports from Amazon forest remnants and Cerrado vegetation in the Tocantina Region, northern Brazil

Aptroot, André; Feuerstein, Shirley Cunha; Cunha-Dias, Iane Paula Rego; Nunes, Álvaro Rogerio de Lucena; Honorato, Maykon Evangelista; Cáceres, Marcela Eugenia da Silva

doi:10.1639/0007-2745-120.3.320

Cited by 19 publications

(10 citation statements)

References 13 publications

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“…In contrast, a number of isidiate collections worldwide, including from tropical Asia and South America, have been attributed to Porina hibernica (e.g. Aptroot 2003; Aptroot et al 2017), a taxon originally described from Great Britain (Swinscow 1962). The seemingly cosmopolitan distribution of this species is thus noteworthy, but molecular data from such collections are needed to ensure that multiple, cryptic taxa are not involved.…”

Section: Discussionmentioning

confidence: 99%

Independent, structurally distinct transitions to microfruticose growth in the crustose genus Porina (Ostropales, Lecanoromycetes): new isidioid species from south-western Florida

Sanders,

De Carolis,

Ertz

et al. 2023

The Lichenologist

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Porina is a widely distributed, species-rich genus of crustose, lichen-forming fungi, some with thalline outgrowths that have been recognized as isidia. We studied three taxa with thalli consisting chiefly of ascending isidioid structures occurring on trunks and branches of Taxodium in southwestern Florida, and provide details of their structure with light and electron microscopy. Two of these taxa we describe as new species: P. microcoralloides and P. nanoarbuscula. Genetic sequences (mtSSU) suggest that they are closely related to each other, yet they differ markedly in the size, morphology and anatomical organization of their isidioid branches as well as in the length of their ascospores. In the three Floridian taxa studied, the crustose portion of the thallus is partly endophloeodic and partly superficial, the latter often patchy, evanescent or inconspicuous, and completely lacks the differentiated anatomical organization characteristic of the isidioid structures arising from it. In Porina microcoralloides, the ascendant thallus consists of branched, coralloid inflated structures with phycobiont (Trentepohlia) unicells arranged at the periphery of a loose central medulla. Sparse fungal cells are interspersed and overlie the algal layer in places, but no differentiated cortex is present, leaving phycobiont cells more or less exposed at the surface. In the closely related Porina nanoarbuscula, the isidioid structures are much finer, more densely branched, and composed of a single, central file of roughly spherical Trentepohlia cells surrounded by a jacket of subglobose fungal cells. The ascospores of P. microcoralloides are more than twice the length of those of P. nanoarbuscula. Although thalli of these two Porina species occur in the same habitats and are sometimes found growing alongside each other, phylogenetic analysis of rbcL sequences suggest that they partner with distinct clades of Trentepohlia phycobionts. A third taxon examined, Porina cf. scabrida, is morphologically rather similar to P. microcoralloides, but the ascendant branches are bright yellow-orange, more cylindrical, and corticated by a thin layer of agglutinated fungal hyphae; perithecia were not seen. Analysis of mtSSU sequences places it distant from P. microcoralloides and P. nanoarbuscula phylogenetically. None of the Floridian taxa studied was particularly close to the European isidiate species Porina hibernica and P. pseudohibernica, which appeared as sister to each other in the analysis. While a particular type of isidiose structure may be reliably characteristic of specific taxa, similarities or differences in these structures do not seem to be useful indicators of phylogenetic proximity or distances among taxa. The morphological trends evident in Porina suggest that multiple transitions from crustose to isidioid or microfruticose growth have arisen repeatedly and in quite different ways within this single genus. At least some of the diverse structures treated within the broad concept of isidia may be representative of the developmental pathways by which fruticose growth forms may arise.

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Section: Discussionmentioning

confidence: 99%

Independent, structurally distinct transitions to microfruticose growth in the crustose genus Porina (Ostropales, Lecanoromycetes): new isidioid species from south-western Florida

Sanders,

De Carolis,

Ertz

et al. 2023

The Lichenologist

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“…1 C-D) Habitat and distribution. This species grows on bark in Cerrado vegetation (Aptroot et al, 2017). Previously it has been reported from Brazil and Bolivia (Guzow-Krzemińska et al, 2019).…”

Section: Heterocyphelium Triseptatum Aptroot and M Cáceresmentioning

confidence: 85%

New records of lichen genera and species for Colombia

Soto¹,

Aptroot²,

Lücking

2022

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Dirina paradoxa, Heterocyphelium triseptatum, Julella sublactea, Opegrapha aurantiaca, Peltula steppae, Sarcographina cyclospora and Schistophoron tenue are reported for the first time in Colombia. The genera Dirina, Heterocyphelium Sarcographina and Schistophoron are reported for the first time in Colombia. These lichens mainly originate from dry ecosystems where previous collections of lichenized fungi have been uncommon.

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“…For literature records, we compiled data from numerous published studies, mostly taxonomic inventories corresponding to the target area (Alves et al, 2014a, 2014b; Andrade, 2015; Aptroot & Cáceres, 2013, 2014a, 2014b, 2014c, 2016a, 2016b; Aptroot & Lücking, 2016; Aptroot, Ertz, et al, 2013, Aptroot, Menezes, et al, 2013, Aptroot, Oliveira, et al, 2013, Aptroot, Sipman, et al, 2013; Aptroot, Mendonça, et al, 2014, Aptroot, Menezes, et al, 2014; Aptroot, Andrade, et al, 2015, Aptroot, Ertz, et al, 2015, Aptroot, Sobreira, et al, 2015; Aptroot et al, 2016, 2017 Cáceres, 2007; Cáceres & Aptroot, 2013, 2016; Cáceres & Lücking, 2000, 2013; Cáceres et al, 2008b; Cáceres, Rivas Plata, et al, 2012, Cáceres, Viera, et al, 2012; Cáceres, Andrade, et al, 2013, Cáceres, Aptroot, Nelsen, et al, 2013, Cáceres, Mota, et al, 2013, Cáceres, Santos, et al, 2013; Cáceres, Aptroot, & Ertz, 2014, Cáceres, Aptroot, Parnmen, et al, 2014; Cáceres, Nascimento, et al, 2014; Cáceres, Aptroot, Lücking, 2017, Cáceres, Aptroot, Mendonça, et al, 2017, Cáceres, Júnior, et al, 2017; Cavalcante, 2012; Dantas, 2016; Dantas et al, 2017; Feuerstein et al, 2014; Frisch & Kalb, 2009; Gueidan et al, 2016; Kalb & Aptroot, 2018; Kalb, 1982a, 1982b, 1982c, 1983a, 1983b, 1984, 1986, 1987, 1988, 1991,…”

Section: Methodsmentioning

confidence: 99%

Phylogenetic structure of lichen metacommunities in Amazonian and Northeast Brazil

Nascimento

Maia

Cáceres

et al. 2021

Ecological Research

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Amazon, Atlantic forest, Brejos de Altitude, Caatinga, Carrasco, Cerradão and Restinga are major vegetation units in North and Northeast Brazil. Little is known about lichen metacommunity structure in these habitats. While species richness and composition generally depend on climatic factors, in azonal vegetation edaphic factors may have a filtering effect on tree bark structure and hence the composition of epiphytic lichen communities. We hypothesized that climatic stress and a tree bark filtering effect would result in reduced richness and phylogenetic clustering in Caatinga, Carrasco, Cerradão and Restinga, whereas high richness and phylogenetic overdispersion were predicted for Amazon and Atlantic Forest. To test this, we analyzed 2,090 lichenized species in the study area, with a supertree to assess phylogenetic metacommunity structure. Amazon and Atlantic forest exhibited high richness and phylogenetic diversity, with phylogenetic overdispersion only in the Amazon. The zonal Caatinga with drought stress and the extrazonal Brejos both exhibited phylogenetic clustering. Among the azonal, edaphic vegetation units, Cerradão exhibited phylogenetic overdispersion, whereas Restinga showed phylogenetic clustering. Nearest taxon phylogenetic distance indicated a close relationship between Amazon and Atlantic forest, Atlantic forest and Brejos and Atlantic forest and Caatinga. Carrasco was mostly closely related to Cerradão, and Restinga was distantly related to any other unit. These findings indicate more complex patterns in the phylogenetic structure of lichen metacommunities, partly reflecting those of plant metacommunities, as a result of concurrent macroecological evolutionary histories. Our data supported floristic evidence that Carrasco is part of the Cerrado complex and not related to Caatinga.

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New lichen species and lichen reports from Amazon forest remnants and Cerrado vegetation in the Tocantina Region, northern Brazil

Cited by 19 publications

References 13 publications

Independent, structurally distinct transitions to microfruticose growth in the crustose genus Porina (Ostropales, Lecanoromycetes): new isidioid species from south-western Florida

Independent, structurally distinct transitions to microfruticose growth in the crustose genus Porina (Ostropales, Lecanoromycetes): new isidioid species from south-western Florida

New records of lichen genera and species for Colombia

Phylogenetic structure of lichen metacommunities in Amazonian and Northeast Brazil

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