The lichenized genus Cora (Basidiomycota: Hygrophoraceae) in Mexico: high species richness, multiple colonization events, and high endemism

Moncada, Bibiana; Pérez-Pérez, Rosa Emilia; Lücking, Robert

doi:10.2478/pfs-2019-0026

Cited by 7 publications

(5 citation statements)

References 22 publications

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“…Por ejemplo, las investigaciones para desentramar algunos complejos de especies en los géneros Cora (Lücking et al 2016) y Lobariella (Moncada et al 2013), han contribuido al desarrollo de listas rojas locales (Gaya et al 2021, IAVH 2019) y al reconocimiento de la amenaza crítica sobre Cora timucua (Lücking et al 2020). En México, además de Parmotrema acutatum y Phaeophyscia sonorae, se cuenta con más de 100 especies endémicas de líquenes, entre de las cuales Cora benitoana y Cora buapana carecen de evaluaciones del estado de conservación debido a su hallazgo reciente (Moncada et al 2019). Lo anterior realza la importancia de continuar con estudios taxonómicos para elaborar listas locales, estatales y nacionales de especies que permitan completar registros, verificar vacíos y deficiencias en la identificación de colecciones científicas.…”

Section: O N L I N E F I R S Tunclassified

“…Después de este trabajo, se pueden encontrar algunas contribuciones importantes al conocimiento de los hongos liquenizados, como la revisión de la familia Parmeliaceae que actualiza los registros y la distribución de las especies presentes en México (Herrera-Campos et al 2016). Más adelante se da a conocer la publicación de especies nuevas dentro de los géneros Cora (Lücking et al 2016, Moncada et al 2019, Gymnographopsis, Redonographa (Miranda-González et al 2020) y Alyxoria (Ertz et al 2020) a partir de material recolectado en diferentes estados del país.…”

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Múltiples registros nuevos de hongos liquenizados para Aguascalientes, con la evaluación del estado de conservación de dos especies endémicas de México

Simijaca¹,

Pérez-Pérez²,

Escoto-Moreno³

et al. 2023

Bot. Sci.

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Antecedentes: La diversidad liquénica en el estado de Aguascalientes ha sido históricamente desatendida. Excepto por las investigaciones efectuadas en sus zonas áridas, los demás tipos de vegetación permanecen inexplorados. Hipótesis: La riqueza de hongos liquenizados registrados para el estado de Aguascalientes aumentará con la exploración y colecta en los tipos de vegetación presentes en el estado. Con esto, se encontrarán especies de interés para la conservación de los ecosistemas, incluyendo especies endémicas de México y/o amenazadas. Descripción de datos: Hongos liquenizados, tipos de vegetación, sustratos. Sitio y años de estudio: Estado de Aguascalientes, 2018 a 2021. Métodos: Revisión e identificación taxonómica de la colección de hongos liquenizados del herbario HUAA. Una vez detectadas las especies endémicas, se calcularon la Extensión de Ocurrencia (EOO) y el Área de ocupación (AOO) para evaluar el estado de conservación según la Lista Roja de la UICN. Resultados: Se presentaron 162 registros nuevos para el estado de Aguascalientes. Chrysothrix insulizans R.C. Harris & Ladd, Hertelidea botryosa (Fr.) Kantvilas & Printzen y Sarcogyne novomexicana H. Magn., fueron registros nuevos para el país. Los líquenes epífitos y la forma de crecimiento foliosa fueron dominantes. Parmotrema acutatum ocupó un EOO = 192,141 km2, mientras Phaeophyscia sonorae resultó en EOO = 18,285 km2. Conclusiones: El número de especies de hongos liquenizados para el estado de Aguascalientes asciende a 218. Se sugiere la publicación en la Lista Roja de la UICN para Parmotrema acutatum Kurok. en la categoría de Menor Preocupación (LC) y Phaeophyscia sonorae Essl. como Vulnerable (VU).

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Section: O N L I N E F I R S Tunclassified

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Múltiples registros nuevos de hongos liquenizados para Aguascalientes, con la evaluación del estado de conservación de dos especies endémicas de México

Simijaca¹,

Pérez-Pérez²,

Escoto-Moreno³

et al. 2023

Bot. Sci.

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“…Currently, around 265 species are distinguished using a combination of molecular and morphological data (Dal Forno et al 2022). A total of 105 species has been formally described (Lücking et al 2013(Lücking et al , 2015a(Lücking et al , 2017(Lücking et al , 2020cVargas et al 2014;Ariyawansa et al 2015;Moncada et al 2019) and 87 of these have molecular and comprehensive phenotype data available. Cora is an ideal model case to implement the PhyloKey approach, since it features only a small number of diagnostic characters compared to other macrolichens and the characters are partly homoplastic, features that often lead to failure when using traditional dichotomous keys.…”

Section: Introductionmentioning

confidence: 99%

“…2014; Ariyawansa et al . 2015; Moncada et al 2019) and 87 of these have molecular and comprehensive phenotype data available. Cora is an ideal model case to implement the PhyloKey approach, since it features only a small number of diagnostic characters compared to other macrolichens and the characters are partly homoplastic, features that often lead to failure when using traditional dichotomous keys.…”

Section: Introductionmentioning

confidence: 99%

PhyloKey: a novel method to rapidly and reliably identify species in complex, species-rich genera, and an opportunity for ‘non-molecular museomics’

Lücking,

Moncada,

Dal Forno

2023

The Lichenologist

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We present a novel identification tool called PhyloKey, based on the method of morphology-based, phylogenetic binning developed within the software package RAxML. This method takes a reference data set of species for which both molecular and morphological data are available, computes a molecular reference tree, maps the morphological characters on the tree, and computes weights based on their level of consistency versus homoplasy using maximum likelihood (ML) and maximum parsimony (MP). Additional units for which only morphological data are known are then binned onto the reference tree, calculating bootstrap support values for alternative placements. This approach is modified here to work as an identification tool which uses the same character coding approach as interactive keys. However, rather than identifying individual samples through a progressive filtering process when entering or selecting characters, query samples are binned in batch mode to all possible alternative species in the tree, with each placement receiving a bootstrap support adding to 100% for all alternative placements. In addition to the fact that, after scoring a character matrix, a large number of specimens can be identified at once in short time, all possible alternative identifications are immediately apparent and can be evaluated based on their bootstrap support values. We illustrate this approach using the basidiolichen genus Cora, which was recently shown to contain hundreds of species. We also demonstrate how the PhyloKey approach can aid the restudying of herbarium samples, adding further value to these collections and contributing with large quantitative data matrices to ‘non-molecular museomics’. Our analysis showed that PhyloKey identifies species correctly with as low as 50% of the characters sampled, depending on the nature of the reference tree and the character weighting scheme. Overall, a molecular reference tree worked best, but a randomized reference tree gave more consistent results, whereas a morphological reference tree performed less well. Surprisingly, even character weighting gave the best results, followed by parsimony weighting and then maximum likelihood weighting.

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“…Rhizonema is the exclusive photobiont in basidiolichens of the Dictyonema clade, here recognized as tribe Dictyonemateae, comprising the genera Acantholichen , Cora , Corella , Cyphellostereum and Dictyonema s.str. Dictyonemateae represents the largest group of basidiolichens, with 148 species currently accepted (Dal Forno et al., 2016; 2017, 2019; Liu et al., 2018; Lücking et al., 2017; Moncada et al., 2019). Rhizonema is also found in several ascolichens, including Coccocarpia (Lücking et al., 2009), Erioderma (Cornejo et al., 2016) , Leptogidium (originally as Scytonema in Muggia et al., 2011), Stereocaulon (Lücking et al., 2009; originally as Nostoc in Stenroos et al., 2006), Lichinodium and species of Moelleropsis and Parmeliella (Cornejo & Scheidegger, 2016).…”

Section: Introductionmentioning

confidence: 99%

Extensive photobiont sharing in a rapidly radiating cyanolichen clade

et al. 2020

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Recent studies have uncovered remarkable diversity in Dictyonema s.lat. basidiolichens, here recognized as subtribe Dictyonemateae. This group includes five genera and 148 species, but hundreds more await description. The photobionts of these lichens belong to Rhizonema, a recently resurrected cyanobacterial genus known by a single species. To further investigate photobiont diversity within Dictyonemateae, we generated 765 new cyanobacterial sequences from 635 specimens collected from 18 countries. The ITS barcoding locus supported the recognition of 200 mycobiont (fungal) species among these samples, but the photobiont diversity was comparatively low. Our analyses revealed three main divisions of Rhizonema, with two repeatedly recovered as monophyletic (proposed as new species), and the third mostly paraphyletic. The paraphyletic lineage corresponds to R. interruptum and partnered with mycobionts from all five genera in Dictyonemateae. There was no evidence of photobiont‐mycobiont co‐speciation, but one of the monophyletic lineages of Rhizonema appears to partner predominantly with one of the two major clades of Cora (mycobiont) with samples collected largely from the northern Andes. Molecular clock estimations indicate the Rhizonema species are much older than the fungal species in the Dictyonemateae, suggesting that these basidiolichens obtained their photobionts from older ascolichen lineages and the photobiont variation in extant lineages of Dictyonemateae is the result of multiple photobiont switches. These results support the hypothesis of lichens representing "fungal farmers," in which diverse mycobiont lineages associate with a substantially lower diversity of photobionts by sharing those photobionts best suited for the lichen symbiosis among multiple and often unrelated mycobiont lineages.

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The lichenized genus Cora (Basidiomycota: Hygrophoraceae) in Mexico: high species richness, multiple colonization events, and high endemism

Cited by 7 publications

References 22 publications

Múltiples registros nuevos de hongos liquenizados para Aguascalientes, con la evaluación del estado de conservación de dos especies endémicas de México

Múltiples registros nuevos de hongos liquenizados para Aguascalientes, con la evaluación del estado de conservación de dos especies endémicas de México

PhyloKey: a novel method to rapidly and reliably identify species in complex, species-rich genera, and an opportunity for ‘non-molecular museomics’

Extensive photobiont sharing in a rapidly radiating cyanolichen clade

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