Phylogeny of<i>Cyttaria</i>inferred from nuclear and mitochondrial sequence and morphological data

Peterson, Kristin R.; Pfister, Donald H.

doi:10.3852/10-046

Cited by 29 publications

(17 citation statements)

References 46 publications

(49 reference statements)

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“…). Moreover, there is no instance of a Nothofagus or Cyttaria species common to both South America and Australasia or present both in Australia and New Zealand (Hill & Read ), (Peterson & Pfister ). The biogeography of Phaffia was analysed in the light of the chronology of the break‐up of Gondwana and in comparison with what is known for southern beech and its fungal parasite.…”

Section: Resultsmentioning

confidence: 99%

Global distribution, diversity hot spots and niche transitions of an astaxanthin‐producing eukaryotic microbe

2014

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Microbes establish very diverse but still poorly understood associations with other microscopic or macroscopic organisms that do not follow the more conventional modes of competition or mutualism. Phaffia rhodozyma, an orange-coloured yeast that produces the biotechnologically relevant carotenoid astaxanthin, exhibits a Holarctic association with birch trees in temperate forests that contrasts with the more recent finding of a South American population associated with Nothofagus (southern beech) and with stromata of its biotrophic fungal parasite Cyttaria spp. We investigated whether the association of Phaffia with Nothofagus-Cyttaria could be expanded to Australasia, the other region of the world where Nothofagus are endemic, studied the genetic structure of populations representing the known worldwide distribution of Phaffia and analysed the evolution of the association with tree hosts. The phylogenetic analysis revealed that Phaffia diversity in Australasia is much higher than in other regions of the globe and that two endemic and markedly divergent lineages seem to represent new species. The observed genetic diversity correlates with host tree genera rather than with geography, which suggests that adaptation to the different niches is driving population structure in this yeast. The high genetic diversity and endemism in Australasia indicate that the genus evolved in this region and that the association with Nothofagus is the ancestral tree association. Estimates of the divergence times of Phaffia lineages point to splits that are much more recent than the break-up of Gondwana, supporting that long-distance dispersal rather than vicariance is responsible for observed distribution of P. rhodozyma.

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Section: Resultsmentioning

confidence: 99%

Global distribution, diversity hot spots and niche transitions of an astaxanthin‐producing eukaryotic microbe

2014

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“…For Cyttaria an alignment of nuclear small subunit (nucSSU), nuclear large subunit (nucLSU), mitochondrial small subunit (mitSSU) ribosomal RNA (rRNA) and TEF1 sequence data as well as morphological data were obtained from our work (Peterson and Pfister 2010;GenBank EU107178-203, -205-232, -234-249). For Nothofagus alignments of chloroplast DNA (cpDNA) rbcL sequences (Martin and Dowd 1993;GenBank L13341-345, -348, -350-358, -360, -362), nuclear internal transcribed spacer (nucITS) rRNA sequences (Manos 1997;GenBank U96849-857, -859, -863, -865-870), cpDNA atpB-rbcL intergenic spacer sequences (Setoguchi et al 1997; GenBank AF015687-690, -692, -696, -698-708) and morphological data (Manos 1997) were obtained from the original publications; the dataset of Knapp et al (2005) was not used because it did not include all Nothofagus species that host Cyttaria.…”

Section: Methodsmentioning

confidence: 99%

“…This included all Nothofagus species that host Cyttaria taxa, as well as select representatives from the other two Nothofagus subgenera. Methods for reconstructing phylogenies follow Peterson and Pfister (2010). Cyttaria phylogenies were taken from Peterson and Pfister (2010), where phylogenies resulting from the exclusion of morphological data also were considered.…”

Section: Methodsmentioning

confidence: 99%

“…1;Peterson and Pfister 2010): one clade (A) occurs on subgenus Nothofagus, which occurs only in South America; the second (B) occurs only in South America on both subgenus Nothofagus and subgenus Lophozonia; and the third (C) exhibits a trans-Antarctic distribution, occurring in both South America and Australasia only on subgenus Lophozonia. In total seven Cyttaria taxa are endemic to southern South America (Argentina and Chile), on subgenera Lophozonia and Nothofagus, and the other five are endemic to southeastern Australasia and New Zealand on subgenus Lophozonia.…”

Section: Introductionmentioning

confidence: 99%

“…In this study we used molecular and morphological datasets derived from our work for Cyttaria (Peterson and Pfister 2010) and from Martin and Dowd (1993), Manos (1997) and Setoguchi (1997) for Nothofagus to test assertions of cophylogeny between the fungal parasite Cyttaria and its host plant Nothofagus. These results were used to examine the biogeographic history of Cyttaria.…”

Section: Introductionmentioning

confidence: 99%

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Cophylogeny and biogeography of the fungal parasite Cyttaria and its host Nothofagus, southern beech

Peterson¹,

Pfister

Bell

2010

Mycologia

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Abstract:The obligate, biotrophic association among species of the fungal genus Cyttaria and their hosts in the plant genus Nothofagus often is cited as a classic example of cophylogeny and is one of the few cases in which the biogeography of a fungus is commonly mentioned or included in biogeographic analyses. In this study molecular and morphological data are used to examine hypotheses regarding the cophylogeny and biogeography of the 12 species of Cyttaria and their hosts, the 11 species of Nothofagus subgenera Lophozonia and Nothofagus. Our results indicate highly significant overall cophylogenetic structure, despite the fact that the associations between species of Cyttaria and Nothofagus usually do not correspond in a simple one to one relationship. Two major lineages of Cyttaria are confined to a single Nothofagus subgenus, a specificity that might account for a minimum of two codivergences. We hypothesize other major codivergences. Numerous extinction also are assumed, as are an independent parasite divergence followed by host switching to account for C. berteroi. Considering the historical association of Cyttaria and Nothofagus, our hypothesis may support the vicariance hypothesis for the transAntarctic distribution between Australasian and South American species of Cyttaria species hosted by subgenus Lophozonia. It also supports the hypothesis of transoceanic long distance dispersal to account for the relatively recent relationship between Australian and New Zealand Cyttaria species, which we estimate to have occurred 44.6-28.5 mya. Thus the history of these organisms is not only a reflection of the breakup of Gondwana but also of other events that have contributed to the distributions of many other southern hemisphere plants and fungi.

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Impact on Physicochemical Composition and Antioxidant Activity of the Wild Edible Mushroom Cyttaria espinosae Subjected to Drying

Leiva-Portilla

Rodríguez-Núñez

Rodríguez-Ramos

et al. 2020

Chemistry & Biodiversity

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The wild edible mushroom 'digüeñe' (Cyttaria espinosae) is a mushroom with interesting flavor and nutritional properties, but highly perishable with a consumption very limited, generating inevitable economic losses for their producers. Because of that, the aim of this study was the evaluation of two drying methods (hot-air drying and freeze-drying) in its bioactive and physicochemical composition for its preservation. The best performances of antioxidant capacity were 62 μmol TE g À 1 (ORAC) and 14.21 μmol TE g À 1 (DPPH), being higher compared with other vegetable sources. Its protein (5.33 %), fiber (5.58 %) and K (2.82 mg g À 1) content also stands out. β-Carotene retention was 35.02 and 23.25 % after freeze drying and hot-air, respectively. Freeze-drying seems a good strategy for digüeñe, bioactive compounds, color and structure were better maintained. This work represents the first characterization of dehydrated digüeñe, constituting approaches for its valorization and use in the food industry.

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Phylogeny ofCyttariainferred from nuclear and mitochondrial sequence and morphological data

Abstract: Cyttaria species

Cited by 29 publications

References 46 publications

Global distribution, diversity hot spots and niche transitions of an astaxanthin‐producing eukaryotic microbe

Global distribution, diversity hot spots and niche transitions of an astaxanthin‐producing eukaryotic microbe

Cophylogeny and biogeography of the fungal parasite Cyttaria and its host Nothofagus, southern beech

Impact on Physicochemical Composition and Antioxidant Activity of the Wild Edible Mushroom Cyttaria espinosae Subjected to Drying

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