Mycophagous rove beetles highlight diverse mushrooms in the Cretaceous

Cai, Chenyang; Leschen, Richard A. B.; Hibbett, David S.; Xia, Fangyuan; Huang, Diying

doi:10.1038/ncomms14894

Cited by 41 publications

(20 citation statements)

References 30 publications

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“…Similarly, the rove beetle subfamily Oxyporinae is also known from the Burmese amber (Yamamoto ; Cai et al . ), but they have a series of significant variations in their body sizes, one of which is exceedingly small‐sized with comparison with the modern taxa (Cai et al . ).…”

Section: Discussionmentioning

confidence: 99%

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Total‐evidence approach reveals an extinct lineage of Paederinae rove beetles from Cretaceous Burmese amber

2019

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The fossil record contains vital information about the evolution of lineages and is a source of data that cannot be reconciled other than by the direct observation of morphologies. Total‐evidence phylogenetic reconstruction is being increasingly used to assess the position of extinct taxa by incorporating morphological data from extinct and extant taxa together with molecular data from extant taxa in a united framework. Here we apply the method to two Cretaceous Burmese amber inclusions belonging to the rove beetle subfamily Paederinae. To perform the total evidence analysis, we constructed the first morphological matrix and the most comprehensive molecular dataset for the subfamily. Our analysis reveals an extinct lineage of Paederinae rove beetles with a suite of unique morphological characters, resulting in the description of a new genus: Diminudon gen. nov. and two new species: D. schomannae sp. nov. and D. kachinensis sp. nov. Simultaneously our analyses provide new insights into the evolution and classification of the entire subfamily. We also discuss the unusually small size of the newly described Paederinae, which may represent an additional case for miniaturization in the Cretaceous.

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Section: Discussionmentioning

confidence: 99%

“…), but they have a series of significant variations in their body sizes, one of which is exceedingly small‐sized with comparison with the modern taxa (Cai et al . ).…”

Section: Discussionmentioning

confidence: 99%

Total‐evidence approach reveals an extinct lineage of Paederinae rove beetles from Cretaceous Burmese amber

2019

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“…Likewise, these fossil records indicate that their sister tribes, although uncertain, can also be traced back to the same geological timescale. Because of the recent and surprising accumulation of fossil records of the Staphylinidae, it is currently assumed that the main staphylinid subfamilies probably appeared in the Early Cretaceous or even the Middle Jurassic (summarized in Chatzimanolis et al ., ; Grebennikov & Newton, ; Peris et al ., ; Cai et al ., : supplementary table 2; Chatzimanolis, ). The discovery of the nearly 100‐Ma‐old leptochirine fossils is congruent with this hypothesis of the ancient origin of each rove beetle subfamily.…”

Section: Discussionmentioning

confidence: 99%

First and oldest Leptochirini rove beetles illuminate diverse cephalic structures in the Cretaceous (Coleoptera: Staphylinidae: Osoriinae)

Yamamoto

Takahashi²

2019

Systematic Entomology

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Osoriinae is a highly diverse, globally distributed subfamily of rove beetles (Staphylinidae), but only a single Mesozoic species, Mesallotrochus longiantennatus Cai & Huang, in mid-Cretaceous Burmese amber is known (age c. 99 Ma). Leptochirini, which is primarily found in decaying wood in the tropics, is one of the four tribes of osoriine rove beetles. The diversity of cephalic tooth shapes in adults has attracted special research attention with regard to the evolution and classification of this group. Here, we report two well-preserved fossils of Leptochirini for the first time from Burmese amber. Together with M. longiantennatus, they represent the oldest osoriines, highlighting the palaeodiversity of the subfamily in Burmese amber. Based on our observations and phylogenetic analyses, a remarkable new genus and species, †Cretochirus newtoni Yamamoto gen. et sp.n., is described. Additionally, a new species, †Priochirus thayerae Yamamoto sp.n., is also described and placed in the extant genus Priochirus Sharp.†Cretochirus gen.n. has a typical body plan of Leptochirini, but it retains several primitive features that have rarely, or never, been known from modern leptochirine taxa, including simple cephalic structures with a largely depressed dorsum, undeveloped cephalic teeth, and the absence of a longitudinal median sulcus of the head, together with the only slightly crenulate external margins of the protibiae. These findings demonstrate the antiquity of Leptochirini rove beetles and even suggest a much older origin of the subfamily. Morphologically diverse leptochirines from Burmese amber also illuminate the remarkable cephalic diversity of the tribe during the Mesozoic. They were already diversified during the mid-Cretaceous in the tropical forests of Myanmar, and possibly living underneath the bark of rotten wood and logs.This published work has been registered in ZooBank, http://zoobank.org/urn:lsid: zoobank.org:pub

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“…The species tree and concatenated translated nucleotide alignments of 360 single-copy-orthologs were used as the input for MCMCtree. The phylogeny was calibrated using fossil records by placing soft minimum bounds at the ancestral node of: i) marasmioid (using Archaeomarasmius legettii 94–90 Ma 108 ; 90 was used), ii) Agaricales (using Palaeoagaricites antiquus 110–100 Ma 109 ; 100 was used), iii) Taxon A (~99 Ma 110 ; 95 was used), and iv) a soft bound of 200 Ma for the phylogeny. The entire analysis was run five times to check for convergence.…”

Section: Methodsmentioning

confidence: 99%

Mycena genomes resolve the evolution of fungal bioluminescence

Lee

Lin

et al. 2020

Preprint

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24Mushroom-forming fungi in the order Agaricales represent an independent origin of 25 bioluminescence in the tree of life, yet the diversity, evolutionary history, and timing of 26 the origin of fungal luciferases remain elusive. We sequenced the genomes and 27transcriptomes of five bonnet mushroom species (Mycena spp.), a diverse lineage 28comprising the majority of bioluminescent fungi. We show that bioluminescence 29 evolved in the common ancestor of Mycena spp. and the marasmioid clade of 30Agaricales and was maintained through at least 160 million years of evolution. We 31revealed Mycena exhibit two-speed genomes and resolve how the luciferase cluster was 32 derived by duplication and translocation, frequently rearranged and lost in most Mycena 33 species, but conserved in the Armillaria lineage. Luciferase cluster members were co-34 expressed across developmental stages, with highest expression in fruiting body caps 35and stipes, suggesting fruiting-related adaptive functions. Our results contribute to 36 understanding a de novo origin of bioluminescence and the corresponding gene cluster 37 in a diverse group of enigmatic fungal species. 38

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Mycophagous rove beetles highlight diverse mushrooms in the Cretaceous

Cited by 41 publications

References 30 publications

Total‐evidence approach reveals an extinct lineage of Paederinae rove beetles from Cretaceous Burmese amber

Total‐evidence approach reveals an extinct lineage of Paederinae rove beetles from Cretaceous Burmese amber

First and oldest Leptochirini rove beetles illuminate diverse cephalic structures in the Cretaceous (Coleoptera: Staphylinidae: Osoriinae)

Mycena genomes resolve the evolution of fungal bioluminescence

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