Gene sequence variations and expression patterns of mitochondrial genes are associated with the adaptive evolution of two Gynaephora species (Lepidoptera: Lymantriinae) living in different high-elevation environments

Zhang, Qilin; Zhang, Li; Zhao, Tian; Wang, Juan; Zhu, Qianhua; Chen, Jun-Yuan; Yüan, Ming

doi:10.1016/j.gene.2017.02.014

Cited by 30 publications

(18 citation statements)

References 52 publications

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“…The 13 PCGs of mitogenome are all key subunits of complexes directly involved in the oxidative phosphorylation (OXPHOS) process, directly providing 95% free energy for cells, which is important for metabolic demands in organisms (Gu et al, ; Wu, Gu, Guo, Huang, & Yang, ). In recent years, the mitogenome has become a powerful system for examining the genetic basis of organismal adaptation to various harsh environments, and signals of positive selection have been detected in mitochondrial genes of various taxa (Korkmaz, Aydemir, Temel, Budak, & Başıbüyük, ; Luo, Yang, & Gao, ; Scott et al, ; Wang et al, ; Yu, Wang, Ting, & Zhang, ; Yuan et al, ; Zhang et al, ; Zhou, Shen, Irwin, Shen, & Zhang, ). Most of these studies focused their attention on vertebrates, whereas few reports examined the adaptive evolution of crustacean mitogenomes to hydrothermal vent environments (Sun, Hui, Wang, & Sha, ; Wang et al, ).…”

Section: Introductionmentioning

confidence: 99%

The complete mitochondrial genomes of two vent squat lobsters, Munidopsis lauensis and M. verrilli: Novel gene arrangements and phylogenetic implications

Sun

Sha

Wang

2019

Ecology and Evolution

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Hydrothermal vents are considered as one of the most extremely harsh environments on the Earth. In this study, the complete mitogenomes of hydrothermal vent squat lobsters, Munidopsis lauensis and M. verrilli, were determined through Illumina sequencing and compared with other available mitogenomes of anomurans. The mitogenomes of M. lauensis (17,483 bp) and M. verrilli (17,636 bp) are the largest among all Anomura mitogenomes, while the A+T contents of M. lauensis (62.40%) and M. verrilli (63.99%) are the lowest. The mitogenomes of M. lauensis and M. verrilli display novel gene arrangements, which might be the result of three tandem duplication–random loss (tdrl) events from the ancestral pancrustacean pattern. The mitochondrial gene orders of M. lauensis and M. verrilli shared the most similarities with S. crosnieri. The phylogenetic analyses based on both gene order data and nucleotide sequences (PCGs and rRNAs) revealed that the two species were closely related to Shinkaia crosnieri. Positive selection analysis revealed that eighteen residues in seven genes (atp8, Cytb, nad3, nad4, nad4l, nad5, and nad6) of the hydrothermal vent anomurans were positively selected sites.

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Section: Introductionmentioning

confidence: 99%

The complete mitochondrial genomes of two vent squat lobsters, Munidopsis lauensis and M. verrilli: Novel gene arrangements and phylogenetic implications

Sun

Sha

Wang

2019

Ecology and Evolution

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“…These effects may have been especially pronounced because all females were collected from the same source population at an intermediate elevation in Bishop Creek. Individual insects may acclimate to reduced oxygen (and low temperature) at high elevation by increasing the concentration of mitochondria and metabolic enzymes, or by increasing tracheation (Harrison et al, ; Zhang et al, ); however, wild‐caught females used in the fecundity study had only a few days to respond physiologically to conditions at outplant sites. Thus, egg production may have become energetically limited at low environmental oxygen, even if temperatures were relatively mild, as they were during this experiment.…”

Section: Discussionmentioning

confidence: 99%

“…Insects face different oxygen limitations than vertebrates due to their small body size and use of air tracheal systems for gas exchange, yet they are subject to metabolic challenges caused by hypoxia (Klok, Kaiser, Lighton, & Harrison, ; Harrison, Greenlee, & Verberk, ; Verberk et al, ). Consequently, environmental hypoxia poses a potentially novel environmental problem for montane insects to solve if they are to persist at high elevation as climate change continues (Andrew et al, ; Buckley et al, ; Zhang et al, ).…”

Section: Introductionmentioning

confidence: 99%

Getting chased up the mountain: High elevation may limit performance and fitness characters in a montane insect

Dahlhoff

Grainger

et al. 2019

Functional Ecology

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Climate change is expected to shift species distributions as populations grow in favourable habitats and decline in harsh ones. Montane animals escape warming conditions at low elevation by moving upslope, but may be physiologically constrained by conditions there. Effects of elevation were studied for montane populations of the leaf beetle Chrysomela aeneicollis, where allele frequencies at nuclear genes and the mitochondrion vary along latitudinal and altitudinal gradients. A population presence survey conducted along a steep altitudinal transect (1,600–3,800 m) from 1981 to 2018 revealed that populations expand to low elevation following wet winters and retreat during drought. Quantitative surveys of a 45‐site population network conducted from 2012 to 2018 along multiple altitudinal transects show that when beetles are abundant, population size peaks at 3,135 m, highest altitude populations are at the southern edge of the range, and populations decline and extirpate during drought, especially at low elevation. To examine effects of elevation on measures of performance and fitness, beetles from a genetically introgressed population (Bishop Creek) were examined. In nature, fecundity of females transplanted along natural altitudinal transects was measured, as was thorax cytochrome c oxidase (CytOx) activity. To examine effects of environmental hypoxia independent of other factors limiting persistence at high elevation, development rate and activity of malate dehydrogenase (MDH) were measured for larvae reared under otherwise common garden conditions at low (1,250 m) and high (3,800 m) elevation. In nature, fecundity declined with increasing elevation, independent of air temperature. CytOx activity was higher at high than low elevation, especially for individuals possessing genotypes of southern origin. Laboratory‐reared larvae with southern mitochondrial haplotypes developed equally well at both elevations, but larvae with northern haplotypes developed more slowly at high elevation. MDH activity showed a similar pattern, suggesting that slower development rates at high elevation may be due to reduction in metabolic rate. These findings suggest that physiological effects of environmental hypoxia may contribute to other factors known to restrict insects’ ability to persist at high elevation, ultimately disrupting associated ecological communities. However, some populations may possess genetic variation that allows for local adaption to high elevation. A plain language summary is available for this article.

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“…Apart from generating telescoped azonal biomes, elevation might drive selection of traits coded in mitochondrial DNA (e.g. conformation of proteins involved in oxidative phosphorylation) directly via abiotic factors such as hypobaric hypoxia and low temperature (Gu et al, ; Luo, Chen, Liu, & Yuqi, ; Zhang et al, ). Further studies on genomic, ecophysiological and morphological traits are needed to reveal details about the divergence of both haplogroups in R. aegyptiacus and potential isolation by adaptation (Orsini, Vanoverbeke, Swillen, Mergeay, & De Meester, ).…”

Section: Discussionmentioning

confidence: 99%

Pan African phylogeography and palaeodistribution of rousettine fruit bats: Ecogeographic correlation with Pleistocene climate vegetation cycles

Stribna

Romportl

Demjanovič

et al. 2019

Journal of Biogeography

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Aim The impact of Pleistocene climatic oscillations on tropical biomes is associated with changes in the extent of forest cover. Fruit bats have played a role in woodland dynamics via pollination and seed dispersal. We hypothesized that phylogeographic patterns of Rousettus on continental Africa and adjacent islands should show a signature of pluvial‐drought cycles, involving demographic expansions and contractions. Location Afrotropical, Malagasy and Saharo‐Arabian biogeographic realms. Taxon Genus Rousettus (Pteropodidae). Methods Phylogeographic and population genetic approaches using mitochondrial and microsatellite data were integrated with species distribution modelling of currently suitable habitats and those of the Last Glacial Maximum using climate simulations. Results Phylogenetic reconstruction yielded an Asian outgroup followed by pectinate branching of the Indian Ocean taxa and Rousettus aegyptiacus. While nuclear microsatellites were homogeneous across the African mainland, two mitochondrial haplogroups were found. Haplogroup I is widespread in regions with extensive tree cover, including tropical rain forests, and has close relationships to isolated lineages in the Middle East and islands in the Gulf of Guinea. Haplogroup II is sister to the rest of the R. aegyptiacus radiation and is found in eastern and southern Africa and the Sudanian savanna in habitats with semi‐open land cover. Main Conclusion Palaeodistributional modelling ascertained that the Indian Ocean islands provided more extensive areas of suitable habitat in the past relative to conditions today, suggesting stepping stone connectivity between Asia and Africa during Pleistocene interpluvial sea‐level lowstands. Inverse pluvial‐drought demography was detected in lineages ancestral to recent haplogroups, providing evidence of past forest refugia and complex ecogeographic scenarios of haplogroup origins involving allopatry and parapatry connected with the eastern Afromontane biodiversity hotspot, and subsequent admixture of nuclear gene pools. The Middle Eastern lineage probably originated during pluvial green Sahara periods, possibly in co‐evolution with ancestors of tree crop species domesticated later during the Neolithic revolution. The keystone role of rousettine bats for forest regeneration and their ability to pioneer dry and distant habitats emphasize their role in conservation biology and restoration ecology.

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Gene sequence variations and expression patterns of mitochondrial genes are associated with the adaptive evolution of two Gynaephora species (Lepidoptera: Lymantriinae) living in different high-elevation environments

Cited by 30 publications

References 52 publications

The complete mitochondrial genomes of two vent squat lobsters, Munidopsis lauensis and M. verrilli: Novel gene arrangements and phylogenetic implications

The complete mitochondrial genomes of two vent squat lobsters, Munidopsis lauensis and M. verrilli: Novel gene arrangements and phylogenetic implications

Getting chased up the mountain: High elevation may limit performance and fitness characters in a montane insect

Pan African phylogeography and palaeodistribution of rousettine fruit bats: Ecogeographic correlation with Pleistocene climate vegetation cycles

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