The gut of Guatemalan passalid beetles: a habitat colonized by cellobiose- and xylose-fermenting yeasts

Urbina, Héctor; Schuster, Jack; Blackwell, Meredith

doi:10.1016/j.funeco.2013.06.005

Cited by 64 publications

(45 citation statements)

References 83 publications

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“…It is clear from research on beetles that diverse communities of wood‐digesting gut microbes are not limited to termites (Zhang, Suh & Blackwell, ; Nardi et al ., ; Urbina, Schuster & Blackwell, ). For example, Suh et al .…”

Section: The Invertebrate Influencementioning

confidence: 99%

Wood decomposition as influenced by invertebrates

2014

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The diversity and habitat requirements of invertebrates associated with dead wood have been the subjects of hundreds of studies in recent years but we still know very little about the ecological or economic importance of these organisms. The purpose of this review is to examine whether, how and to what extent invertebrates affect wood decomposition in terrestrial ecosystems. Three broad conclusions can be reached from the available literature. First, wood decomposition is largely driven by microbial activity but invertebrates also play a significant role in both temperate and tropical environments. Primary mechanisms include enzymatic digestion (involving both endogenous enzymes and those produced by endo-and ectosymbionts), substrate alteration (tunnelling and fragmentation), biotic interactions and nitrogen fertilization (i.e. promoting nitrogen fixation by endosymbiotic and free-living bacteria). Second, the effects of individual invertebrate taxa or functional groups can be accelerative or inhibitory but the cumulative effect of the entire community is generally to accelerate wood decomposition, at least during the early stages of the process (most studies are limited to the first 2-3 years). Although methodological differences and design limitations preclude meta-analysis, studies aimed at quantifying the contributions of invertebrates to wood decomposition commonly attribute 10-20% of wood loss to these organisms. Finally, some taxa appear to be particularly influential with respect to promoting wood decomposition. These include large wood-boring beetles (Coleoptera) and termites (Termitoidae), especially fungus-farming macrotermitines. The presence or absence of these species may be more consequential than species richness and the influence of invertebrates is likely to vary biogeographically.

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Section: The Invertebrate Influencementioning

confidence: 99%

Wood decomposition as influenced by invertebrates

2014

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“…The strains belonging to the novel species in the current study, namely NYNU 1495 T , NYNU 1497 and NYNU 15835, were isolated from the gut of three individuals of Allomyrina dichotoma in September 2014 and August 2015. The methods for yeast isolation were detailed by and Urbina et al (2013). The insects were placed in Petri dishes for 1-3 days without food prior to dissection; withholding food helps eliminate some contaminating organisms that may be isolated from the gut.…”

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confidence: 99%

Spathaspora allomyrinae sp. nov., a d-xylose-fermenting yeast species isolated from a scarabeid beetle Allomyrina dichotoma

Wang

Ren

Zhang

et al. 2016

International Journal of Systematic and Evolutionary Microbiology

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During an investigation of yeasts associated with insects, three strains of a D-xylose-fermenting yeast species were isolated from the gut of the host beetles Allomyrina dichotoma (Coleoptera: Scarabeidae) collected on the Baotianman National Nature Reserve, Nanyan, Henan Province, China. These strains formed two elongated ascospores, which were tapered and curved at the ends in persistent asci. Sequence analyses of the D1/D2 domains of the large subunit (LSU) and small subunit (SSU) rRNA genes showed that these new strains represent a phylogenetically distinct species in the Spathaspora clade. This novel species differed from the closest species, Candida lyxosophila NRRL Y-17539 T , by a 6.7 % sequence divergence (31 substitutions and 7 gaps) in the D1/D2 LSU rRNA gene and a 1.2 % divergence (17 substitutions, 4 gaps) in the SSU rRNA gene. The novel species can also be distinguished from C. lyxosophila NRRL Y-17539 T in terms of the ability to assimilate myo-inositol and to grow in the presence of 0.1 % cycloheximide, as well as the inability to assimilate citrate. The name Spathaspora allomyrinae sp. nov. is proposed for this species. The type strain is NYNU 1495 T (5CICC 33057 T 5CBS 13924 T ). The MycoBank number is MB 815071.

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“…Furthermore, Saccharomycetes are especially associated with the guts of saproxylic insects involved in lignocellulosic decomposition (Calderon & Berkov 2012). The majority of the genera of this class (Pichia, Candida, Sugiyamaella, Debaryomyces, Kuraishia, Scheffersomyces, Wickerhamomyces, Torulaspora, and Meyerozyma) have also been detected in previous studies of wood-decaying fungi from tropical forests that employed culture-dependent methods (Urbina et al 2013, Davis 2014. Orbiliomycetes (Arthrobotrys, Dactylella) are typically found as saprotrophs on wood and can also present a nematophagic habit (Cannon & Kirk 2007), which represents a strategy for survival in low-nitrogen environments such as wood (Berg & McClaugherty 2008).…”

Section: Discussionmentioning

confidence: 99%

“…Numerous representatives of white-rot genera of Hymenochaetales (Resinicium), Polyporales (Flavodon, Ganoderma, Phanerochaete, Trametes, Hyphoderma, Phlebia, Perenniporia, Grammothele), Russulales (Asterostoma) and Agaricales (Pluteus, Resupinatus, Gymnopus, Leucocoprinus, Galerina, Lepiota, Gerronema, Megacollybia, Collybia, Clitopilus, Agaricus) were detected. Furthermore, brown-rot genera of Polyporales such as Fomitopsis (Yoon et al 2005) and Antrodia (Clausen & Green 2003) were also present, as well as typical brown-rot taxa of Dacrymycetes (Calocera) (Seifert, 1983) and hemicellulolytic taxa associated with saproxylic insects in the order Tremellales (Cryptococcus) (Urbina et al 2013). Moreover, two genera (Meira and Malassezia) belonging to the subphylum Ustilaginomycotina, which are not directly related to wood decomposition, were also retrieved.…”

Section: Discussionmentioning

confidence: 99%

USING Next-Generation Sequencing (NGS) TO UNCOVER DIVERSITY OF WOOD-DECAYING FUNGI IN NEOTROPICAL ATLANTIC FORESTS

et al. 2017

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A targeted amplicon-based metagenomics approach (metabarcoding) provides detailed access to the diversity of the mycobiome in any substrate in distinct environments on Earth. Fungi are the main decomposers of lignocellulosic woody debris in terrestrial forested ecosystems, contributing significantly to the global carbon cycle. The main objectives of this study were to assess the fungal taxonomic diversity in fallen woody debris samples from two Neotropical forest fragments (rainforest and seasonal forest), to analyze the qualitative and quantitative components of the taxonomic diversity, and to investigate the functional diversity of the ecological groups detected. Our study comprised three main methodological steps: (i) sampling in the field; (ii) extraction of DNA, amplification of targeted segments and massively parallel sequencing; and (iii) data analysis and interpretation. A total of 110 molecular operational taxonomic units showing sequence similarity of 95% or more across the two collection sites using two DNA metabarcoding markers (ITS1 and ITS2) were assigned to putative fungal genera in 59 families, 27 orders, and 3 phyla. The number of putative fungal genera and the relative abundance of reads for each genus are higher in the tropical rainforest site than in the tropical seasonal forest site. Most of the identified genera are ligninolytic and cellulolytic and/or hemicellulolytic Basidiomycota (Agaricomycetes) and Ascomycota (Sordariomycetes), but "sugar fungi" and fungi associated with plants and detritivorous insects were also detected. This is the first study using NGS as a rapid and large-scale useful strategy to uncover the diversity of wood-decaying fungi in tropical forests.

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The gut of Guatemalan passalid beetles: a habitat colonized by cellobiose- and xylose-fermenting yeasts

Cited by 64 publications

References 83 publications

Wood decomposition as influenced by invertebrates

Wood decomposition as influenced by invertebrates

Spathaspora allomyrinae sp. nov., a d-xylose-fermenting yeast species isolated from a scarabeid beetle Allomyrina dichotoma

USING Next-Generation Sequencing (NGS) TO UNCOVER DIVERSITY OF WOOD-DECAYING FUNGI IN NEOTROPICAL ATLANTIC FORESTS

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