<i>Perichaena longipes</i>, a new myxomycete from the Neotropics

Walker, Laura M.; Leontyev, Dmitry V.; Stephenson, Steven L.

doi:10.3852/14-330

Cited by 21 publications

(13 citation statements)

References 16 publications

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“…On the other hand, M. floripara has solitary fructifications, and this applies as well to a form of M. vesparium which shows a different partial 18S rDNA sequence (Feng and Schnittler 2017). In 18S rDNA phylogenies species traditionally recognized within Metatrichia branch within those of the genus Trichia Fiore-Donno et al 2013, Walker et al 2015.…”

Section: ••••••• [Metatrichia Ing]mentioning

confidence: 98%

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Towards a phylogenetic classification of the Myxomycetes

et al. 2019

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The traditional classification of the Myxomycetes (Myxogastrea) into five orders (Echinosteliales, Liceales, Trichiales, Stemonitidales and Physarales), used in all monographs published since 1945, does not properly reflect evolutionary relationships within the group. Reviewing all published phylogenies for myxomycete subgroups together with a 18S rDNA phylogeny of the entire group serving as an illustration, we suggest a revised hierarchical classification, in which taxa of higher ranks are formally named according to the International Code of Nomenclature for algae, fungi and plants. In addition, informal zoological names are provided. The exosporous genus Ceratiomyxa, together with some protosteloid amoebae, constitute the class Ceratiomyxomycetes. The class Myxomycetes is divided into a bright- and a dark-spored clade, now formally named as subclasses Lucisporomycetidae and Columellomycetidae, respectively. For bright-spored myxomycetes, four orders are proposed: Cribrariales (considered as a basal group), Reticulariales, a narrowly circumscribed Liceales and Trichiales. The dark-spored myxomycetes include five orders: Echinosteliales (considered as a basal group), Clastodermatales, Meridermatales, a more narrowly circumscribed Stemonitidales and Physarales (including as well most of the traditional Stemonitidales with durable peridia). Molecular data provide evidence that conspicuous morphological characters such as solitary versus compound fructifications or presence versus absence of a stalk are overestimated. Details of the capillitium and peridium, and especially how these structures are connected to each other, seem to reflect evolutionary relationships much better than many characters which have been used in the past.

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Section: ••••••• [Metatrichia Ing]mentioning

confidence: 98%

“…2, 11 (1817) This paraphyletic genus is currently underrepresented in molecular investigations. At least some species show affinities to Trichia (e.g., P. longipes,Walker et al 2015), while others may form a separate genus, sister to Trichia (P. corticalis, P. depressa and P. luteola, Fiore-Donno et al 2013).…”

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confidence: 99%

Towards a phylogenetic classification of the Myxomycetes

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“…Dagamac et al 2017) or taxonomic (i.e. Walker et al 2015a) studies and to promote applied lines of research on myxomycetes (i.e. Hoppe and Schnittler 2015).…”

Section: Discussionmentioning

confidence: 99%

Diversity patterns, ecological associations and future of research on Costa Rican myxomycetes

Lado

Rojas

2018

Mycology

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The most active research period on myxomycetes in Costa Rica has taken place in the last three decades. During this time, most of the collections have been carried out and most of the scientific articles have been produced. However, the lack of standard protocols and systematic planning across the country generated a need to conduct an analysis of myxomycete records to define future lines of work. A compilation, cleaning, standardisation and analysis of information associated with a database of more than 7800 records that comprised 242 species of myxomycetes reported in Costa Rica during the last 110 years, was carried out. An interpretation of data with a conservation approach that integrated elements of data-mining and geographical information systems was conducted. Results showed that myxomycetes has been comparatively well studied in Costa Rica in relation to other regional or tropical countries. However, survey effort has been unequal within the territory, leaving some interesting areas or substrates understudied. The absence of long-term goals to study this country and Mesoamerica has limited the potential that the analysed data can have within the context of conservation. This could be the next logical step in the study of this group of microorganisms in that country.

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“…Together these eight taxa represent over 50% of the total abundance. At least one of the species recovered, Perichaena longipes, was new to science and has been formally described (Walker et al 2015a). In all, 34 of the species recorded had not been reported previously to occur in the Republic of Panama, bringing the list of species records for the country to 151 (according to lists published by Piepenbring (2006) and the Myxotropic web site [www.myxotropic.org, accessed on 12-1-2015]) (Table S3).…”

Section: Taxonomic Composition Of Myxomycetesmentioning

confidence: 99%

The Response of Litter‐Associated Myxomycetes to Long‐Term Nutrient Addition in a Lowland Tropical Forest

Walker

Cedeño-Sanchez

Carbonero

et al. 2019

J Eukaryotic Microbiology

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Myxomycetes (plasmodial slime molds) are abundant protist predators that feed on bacteria and other microorganisms, thereby playing important roles in terrestrial nutrient cycling. Despite their significance, little is known about myxomycete communities and the extent to which they are affected by nutrient availability. We studied the influence of long‐term addition of N, P, and K on the myxomycete community in a lowland forest in the Republic of Panama. In a previous study, microbial biomass increased with P but not N or K addition at this site. We hypothesized that myxomycetes would increase in abundance in response to P but that they would not respond to the sole addition of N or K. Moist chamber cultures of leaf litter and small woody debris were used to quantify myxomycete abundance. We generated the largest myxomycete dataset (3,381 records) for any single locality in the tropics comprised by 91 morphospecies. In line with our hypothesis, myxomycete abundance increased in response to P addition but did not respond to N or K. Community composition was unaffected by nutrient treatments. This work represents one of very few large‐scale and long‐term field studies to include a heterotrophic protist highlighting the feasibility and value in doing so.

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Perichaena longipes, a new myxomycete from the Neotropics

Cited by 21 publications

References 16 publications

Towards a phylogenetic classification of the Myxomycetes

Towards a phylogenetic classification of the Myxomycetes

Diversity patterns, ecological associations and future of research on Costa Rican myxomycetes

The Response of Litter‐Associated Myxomycetes to Long‐Term Nutrient Addition in a Lowland Tropical Forest

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