Genome sequencing and phylogenetic analysis of allotetraploid Salix matsudana Koidz

AbstractPolyploidy is a common phenomenon among willow species. In this study, genome sequencing was conducted for Salix matsudana Koidz (also named Chinese willow), an important greening and arbor tree species, and the genome of this species was compared with those of four other tree species in Salicaceae. The total genome sequence of S. matsudana was 655.72 Mb in size, with repeated sequences accounting for 45.97% of the total length. In total, 531.43 Mb of the genome sequence could be mapped onto 38 chromosomes using the published genetic map as a reference. The genome of S. matsudana could be divided into two groups, the A and B genomes, through homology analysis with the genome of Populus trichocarpa, and the A and B genomes contained 23,985 and 25,107 genes, respectively. 4DTv combined transposon analysis predicted that allotetraploidy in S. matsudana appeared ~4 million years ago. The results from this study will help reveal the evolutionary history of S. matsudana and lay a genetic basis for its breeding.

Download Full-text

Molecular evolutionary analysis of human primary microcephaly genes

BMC Ecology and Evolution ◽

10.1186/s12862-021-01801-0 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Nashaiman Pervaiz ◽

Hongen Kang ◽

Yiming Bao ◽

Amir Ali Abbasi

Keyword(s):

Evolutionary History ◽

Genetic Basis ◽

Brain Size ◽

Primate Species ◽

Evolutionary Analysis ◽

Australopithecus Afarensis ◽

Primary Microcephaly ◽

Modern Humans ◽

History Of ◽

The Brain

Abstract Background There has been a rapid increase in the brain size relative to body size during mammalian evolutionary history. In particular, the enlarged and globular brain is the most distinctive anatomical feature of modern humans that set us apart from other extinct and extant primate species. Genetic basis of large brain size in modern humans has largely remained enigmatic. Genes associated with the pathological reduction of brain size (primary microcephaly-MCPH) have the characteristics and functions to be considered ideal candidates to unravel the genetic basis of evolutionary enlargement of human brain size. For instance, the brain size of microcephaly patients is similar to the brain size of Pan troglodyte and the very early hominids like the Sahelanthropus tchadensis and Australopithecus afarensis. Results The present study investigates the molecular evolutionary history of subset of autosomal recessive primary microcephaly (MCPH) genes; CEP135, ZNF335, PHC1, SASS6, CDK6, MFSD2A, CIT, and KIF14 across 48 mammalian species. Codon based substitutions site analysis indicated that ZNF335, SASS6, CIT, and KIF14 have experienced positive selection in eutherian evolutionary history. Estimation of divergent selection pressure revealed that almost all of the MCPH genes analyzed in the present study have maintained their functions throughout the history of placental mammals. Contrary to our expectations, human-specific adoptive evolution was not detected for any of the MCPH genes analyzed in the present study. Conclusion Based on these data it can be inferred that protein-coding sequence of MCPH genes might not be the sole determinant of increase in relative brain size during primate evolutionary history.

Download Full-text

The evolutionary history of HSA7/16 synteny in vertebrates: a critical interpretation of comparative cytogenetic and genome sequence data

Caryologia ◽

10.1080/00087114.2013.829691 ◽

2013 ◽

Vol 66 (3) ◽

pp. 236-242

Author(s):

Barbara Picone ◽

Luca Sineo

Keyword(s):

Genome Sequence ◽

Evolutionary History ◽

Sequence Data ◽

Genome Sequence Data ◽

History Of ◽

Critical Interpretation

Download Full-text

Early origin of sweet perception in the songbird radiation

Science ◽

10.1126/science.abf6505 ◽

2021 ◽

Vol 373 (6551) ◽

pp. 226-231 ◽

Cited By ~ 1

Author(s):

Yasuka Toda ◽

Meng-Ching Ko ◽

Qiaoyi Liang ◽

Eliot T. Miller ◽

Alejandro Rico-Guevara ◽

...

Keyword(s):

Evolutionary History ◽

Genetic Basis ◽

Sensory Biology ◽

Avian Evolution ◽

Nectar Feeding ◽

Evolutionary Radiation ◽

History Of ◽

Sensory Convergence ◽

Early Origin

Early events in the evolutionary history of a clade can shape the sensory systems of descendant lineages. Although the avian ancestor may not have had a sweet receptor, the widespread incidence of nectar-feeding birds suggests multiple acquisitions of sugar detection. In this study, we identify a single early sensory shift of the umami receptor (the T1R1-T1R3 heterodimer) that conferred sweet-sensing abilities in songbirds, a large evolutionary radiation containing nearly half of all living birds. We demonstrate sugar responses across species with diverse diets, uncover critical sites underlying carbohydrate detection, and identify the molecular basis of sensory convergence between songbirds and nectar-specialist hummingbirds. This early shift shaped the sensory biology of an entire radiation, emphasizing the role of contingency and providing an example of the genetic basis of convergence in avian evolution.

Download Full-text

Evolutionary history of a widespread tree species A cer mono in E ast A sia

Ecology and Evolution ◽

10.1002/ece3.1278 ◽

2014 ◽

Vol 4 (22) ◽

pp. 4332-4345 ◽

Cited By ~ 22

Author(s):

Xi‐Di Guo ◽

Hong‐Fang Wang ◽

Lei Bao ◽

Tian‐Ming Wang ◽

Wei‐Ning Bai ◽

...

Keyword(s):

Tree Species ◽

Evolutionary History ◽

History Of

Download Full-text

A complete mitochondrial genome sequence of the wild two-humped camel (Camelus bactrianus ferus): an evolutionary history of camelidae

BMC Genomics ◽

10.1186/1471-2164-8-241 ◽

2007 ◽

Vol 8 (1) ◽

pp. 241 ◽

Cited By ~ 42

Author(s):

Peng Cui ◽

Rimutu Ji ◽

Feng Ding ◽

Dan Qi ◽

Hongwei Gao ◽

...

Keyword(s):

Mitochondrial Genome ◽

Genome Sequence ◽

Evolutionary History ◽

Complete Mitochondrial Genome ◽

Mitochondrial Genome Sequence ◽

Complete Mitochondrial Genome Sequence ◽

Camelus Bactrianus ◽

History Of

Download Full-text

THE EVOLUTIONARY HISTORY OF DROSOPHILA BUZZATII. XII. THE GENETIC BASIS OF STERILITY IN HYBRIDS BETWEEN D. BUZZATII AND ITS SIBLING D. SERIDO FROM ARGENTINA

Genetics ◽

10.1093/genetics/114.3.841 ◽

1986 ◽

Vol 114 (3) ◽

pp. 841-857

Author(s):

Horacio Naveira ◽

Antonio Fontdevila

Keyword(s):

Evolutionary History ◽

Genetic Basis ◽

Hybrid Sterility ◽

Polytene Chromosomes ◽

Chromosome Segment ◽

Minimum Size ◽

Drosophila Buzzatii ◽

History Of ◽

Male Hybrid ◽

Chromosome Segments

ABSTRACT The genetic basis of hybrid sterility has been investigated in backcross segmental hybrids between two sibling species, Drosophila buzzatii and D. serido. Asynapsis of homologous bands in hybrid polytene chromosomes has been used to identify the D. serido chromosome segments introgressed into the D. buzzatti genome. All the investigated chromosomes contain male sterility factors. For autosomes, sterility is produced when an introgressed D. serido chromosome segment, or combination of segments, reaches a minimum size. On the other hand, any introgressed X chromosome segment from D. serido, irrespective of its size, produces either male hybrid sterility or inviability.

Download Full-text