Evolutionary trend of the small subunit nuclear ribosomal DNAs (SSU rDNAs) of wood-feeding<i>Cryptocercus</i>cockroaches (Blattaria:<i>Cryptocercus</i>)

Kim, Hye Ri; Rho, Hyun Soo; Kim, Won; Kim, Jong Kuk; Choi, Hong‐Keun; Jeon, Sung Ho; Park, Yung Chul

doi:10.1080/19768354.2012.754380

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…After filtering, high‐quality reads from all samples were assembled de novo using Trinity (ver. 2.12.0) under the default parameters (Grabherr et al, 2011; Jeon et al, 2023; Jung et al, 2020; Kim et al, 2024; Ranjan et al, 2015). Assembled contigs' open reading frames (ORFs) were then predicted to generate unigene sequences with a minimum protein length of 75 amino acids using TransDecoder (ver.…”

Section: Methodsmentioning

confidence: 99%

Transcriptome and functional analyses of phenotypic plasticity in sea grape Caulerpa okamurae

Kang,

Kwak,

Kim

et al. 2024

Physiologia Plantarum

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Caulerpa is a marine green macroalga distinguished by a large single cell with multiple nuclei. It also exhibits remarkable morphological intraspecies variations, in response to diverse environmental types. However, the molecular mechanisms underlying this phenotypic plasticity remain poorly understood. In this work, we compare the transcriptomes of Caulerpa okamurae Weber Bosse, 1897 displaying altered phenotypes of cultivation and natural phenotypes and investigate significantly regulated genes and their biological functions using differential expression analyses. We observe light‐harvesting complex upregulation and cellular framework stability downregulation in altered phenotypes compared to the natural phenotypes. Intertidal macrophytes reduce light capture to avoid photodamage and regulate their morphology to protect against wave damage. In contrast, the lower light conditions and the cultivation environment augment light capture and increase a morphology prioritizing light trapping. Moreover, the addition of simulated wave‐sweeping stimuli induces a return to the natural morphology under high‐light conditions, showing how mechanical stress affects morphological organization in C. okamurae. We provide detailed gene expression patterns in C. okamurae under varying light intensities and water conditions, suggesting a distinct influence on its morphological traits.

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Section: Methodsmentioning

confidence: 99%

Transcriptome and functional analyses of phenotypic plasticity in sea grape Caulerpa okamurae

Kang,

Kwak,

Kim

et al. 2024

Physiologia Plantarum

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A global molecular phylogeny and timescale of evolution for Cryptocercus woodroaches

Che

Wang

Shi

et al. 2016

Molecular Phylogenetics and Evolution

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Cryptocercus is a genus of sub-social wood-feeding cockroaches that represents the sister group to the eusocial termites. We generated mitochondrial (12S+16S rRNA, COII), nuclear (28S rRNA) and Blattbacterium endosymbiont (16S+23S rRNA) sequence data for 8 new Chinese species, and combined these with previously available data to undertake the most extensive analysis of phylogenetic relationships within the genus to date. As expected, phylogenetic relationships among Blattabacterium strains were found to be congruent with those of their hosts. Three major clades were found to exist in Asian populations, one representing taxa from the Hengduan mountains in Southwestern China, a second including taxa from Russia, Korea, Northeastern China, and Yunnan in the Hengduan Mountains, and a third including taxa from the Qinling Mountains and Daba Mountains in Central China. A molecular dating analysis using 7 termite fossils to calibrate the molecular clock indicated that the divergence of American and Asian Cryptocercus occurred 55.09Ma (41.55-72.28Ma 95% CI), and that the radiations of American and Asian taxa occurred 28.48Ma (20.83-37.95Ma 95% CI) and 20.97Ma (15.78-27.21Ma 95% CI) respectively. Reconstruction of ancestral geographic distributions using S-DIVA suggested Cryptocercus was originally distributed across both continents, as opposed to ancestral migration of Cryptocercus from one continent to the other. The last common ancestor of Asian Cryptocercus was inferred to have existed in Central China. An examination of male chromosome numbers in Asian Cryptocercus showed that diploid numbers vary from 2n=15 to 2n=41, and indicates the presence of eight new species. Our study represents the most comprehensive phylogenetic and biogeographic study yet performed for this important group of cockroaches.

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Evolutionary trend of the small subunit nuclear ribosomal DNAs (SSU rDNAs) of wood-feedingCryptocercuscockroaches (Blattaria:Cryptocercus)

Cited by 2 publications

References 31 publications

Transcriptome and functional analyses of phenotypic plasticity in sea grape Caulerpa okamurae

Transcriptome and functional analyses of phenotypic plasticity in sea grape Caulerpa okamurae

A global molecular phylogeny and timescale of evolution for Cryptocercus woodroaches

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