scholarly journals Evidence of Adaptive Evolution of Accessory Gland Proteins in Closely Related Species of the Drosophila repleta Group

2008 ◽  
Vol 25 (9) ◽  
pp. 2043-2053 ◽  
Author(s):  
F. C. Almeida ◽  
R. DeSalle
Keyword(s):  
Adaptive Evolution ◽  
Related Species ◽  
Accessory Gland ◽  
Accessory Gland Proteins ◽  
Closely Related Species ◽  
Repleta Group

THE EVOLUTIONARY HISTORY OF DROSOPHILA BUZZATII. III. CYTOGENETIC RELATIONSHIPS BETWEEN TWO SIBLING SPECIES OF THE BUZZATII CLUSTER

Genetics ◽  
1982 ◽  
Vol 101 (3-4) ◽  
pp. 503-518 ◽  
Author(s):  
A Ruiz ◽  
A Fontdevila ◽  
M Wasserman
Keyword(s):  
Salivary Gland ◽  
Sibling Species ◽  
Related Species ◽  
Evolutionary History ◽  
South American ◽  
Closely Related Species ◽  
Drosophila Buzzatii ◽  
Repleta Group ◽  
Chromosomal Data ◽  
History Of

ABSTRACT Drosophila buzzatii has been found sympatric in Argentina with a closely-related sibling species, D. serido. The biogeographical, reproductive and chromosomal data allow us to combine these species into an evolutionary unit, the buzzatii cluster. Salivary gland chromosomes also have been used to determine their phylogenetic relationships with other closely related species, showing that the buzzatii cluster species share two inversions—2d  2 and 2s  6—with the species of the martensis cluster. Both clusters arose from South American populations of the ancestor of the mulleri complex, and we propose to include D. buzzatii and D. serido in the mulleri complex of the repleta group.

scholarly journals Patterns of Transcriptome Divergence in the Male Accessory Gland of Two Closely Related Species of Field Crickets

Genetics ◽  
2012 ◽  
Vol 193 (2) ◽  
pp. 501-513 ◽  
Author(s):  
Jose A. Andrés ◽  
Erica L. Larson ◽  
Steven M. Bogdanowicz ◽  
Richard G. Harrison
Keyword(s):  
Related Species ◽  
Accessory Gland ◽  
Male Accessory Gland ◽  
Closely Related Species ◽  
Field Crickets

Identification and comparative analysis of accessory gland proteins in Orthoptera

Genome ◽  
2006 ◽  
Vol 49 (9) ◽  
pp. 1069-1080 ◽  
Author(s):  
W. Evan Braswell ◽  
José A. Andrés ◽  
Luana S. Maroja ◽  
Richard G. Harrison ◽  
Daniel J. Howard ◽  
...  
Keyword(s):  
Expressed Sequence Tag ◽  
Sequence Similarity ◽  
Sequence Divergence ◽  
Fertilization Success ◽  
Accessory Gland ◽  
Accessory Gland Proteins ◽  
Closely Related Species ◽  
Functional Conservation ◽  
Accessory Glands ◽  
Protein Classes

Accessory reproductive gland proteins (Acps) in Drosophila evolve quickly and appear to play an important role in ensuring the fertilization success of males. Moreover, Acps are thought to be involved in establishing barriers to fertilization between closely related species. While accessory glands are known to occur in the males of many insect groups, the proteins that are passed on to females by males during mating have not been well characterized outside of Drosophila. To gain a better understanding of these proteins, we characterized ESTs from the accessory glands of two cricket species, Allonemobius fasciatus and Gryllus firmus. Using an expressed sequence tag (EST) approach, followed by bioinformatic and evolutionary analyses, we found that many proteins are secreted and, therefore, available for transfer to the female during mating. Further, we found that most ESTs are novel, showing little sequence similarity between taxa. Evolutionary analyses suggest that cricket proteins are subject to diversifying selection and indicate that Allonemobius is much less polymorphic than Gryllus. Despite rapid nucleotide sequence divergence, there appears to be functional conservation of protein classes among Drosophila and cricket taxa.

scholarly journals Chloroplast Genome Evolution in Four Montane Zingiberaceae Taxa in China

2022 ◽  
Vol 12 ◽  
Author(s):  
Qian Yang ◽  
Gao-Fei Fu ◽  
Zhi-Qiang Wu ◽  
Li Li ◽  
Jian-Li Zhao ◽  
...  
Keyword(s):  
Chloroplast Genome ◽  
Adaptive Evolution ◽  
Related Species ◽  
Single Copy ◽  
Large Single Copy ◽  
Closely Related Species ◽  
Chloroplast Genomes ◽  
Insight Into ◽  
Small Single Copy ◽  
Selection Of

Chloroplasts are critical to plant survival and adaptive evolution. The comparison of chloroplast genomes could provide insight into the adaptive evolution of closely related species. To identify potential adaptive evolution in the chloroplast genomes of four montane Zingiberaceae taxa (Cautleya, Roscoea, Rhynchanthus, and Pommereschea) that inhabit distinct habitats in the mountains of Yunnan, China, the nucleotide sequences of 13 complete chloroplast genomes, including five newly sequenced species, were characterized and compared. The five newly sequenced chloroplast genomes (162,878–163,831 bp) possessed typical quadripartite structures, which included a large single copy (LSC) region, a small single copy (SSC) region, and a pair of inverted repeat regions (IRa and IRb), and even though the structure was highly conserved among the 13 taxa, one of the rps19 genes was absent in Cautleya, possibly due to expansion of the LSC region. Positive selection of rpoA and ycf2 suggests that these montane species have experienced adaptive evolution to habitats with different sunlight intensities and that adaptation related to the chloroplast genome has played an important role in the evolution of Zingiberaceae taxa.

Microsatellite Marker: Importance and Implications of Cross-genome Analysis for Finger Millet (Eleusine coracana (L.) Gaertn)

2020 ◽  
Vol 9 (3) ◽  
pp. 160-170
Author(s):  
Thumadath P.A. Krishna ◽  
Maharajan Theivanayagam ◽  
Gurusunathan V. Roch ◽  
Veeramuthu Duraipandiyan ◽  
Savarimuthu Ignacimuthu
Keyword(s):  
Molecular Marker ◽  
Microsatellite Markers ◽  
Ssr Markers ◽  
Genome Analysis ◽  
Related Species ◽  
Finger Millet ◽  
Crop Improvement ◽  
Human Beings ◽  
Closely Related Species ◽  
Genome Amplification

Finger millet is a superior staple food for human beings. Microsatellite or Simple Sequence Repeat (SSR) marker is a powerful tool for genetic mapping, diversity analysis and plant breeding. In finger millet, microsatellites show a higher level of polymorphism than other molecular marker systems. The identification and development of microsatellite markers are extremely expensive and time-consuming. Only less than 50% of SSR markers have been developed from microsatellite sequences for finger millet. Therefore, it is important to transfer SSR markers developed for related species/genus to finger millet. Cross-genome transferability is the easiest and cheapest method to develop SSR markers. Many comparative mapping studies using microsatellite markers clearly revealed the presence of synteny within the genomes of closely related species/ genus. Sufficient homology exists among several crop plant genomes in the sequences flanking the SSR loci. Thus, the SSR markers are beneficial to amplify the target regions in the finger millet genome. Many SSR markers were used for the analysis of cross-genome amplification in various plants such as Setaria italica, Pennisetum glaucum, Oryza sativa, Triticum aestivum, Zea mays and Hordeum vulgare. However, there is very little information available about cross-genome amplification of these markers in finger millet. The only limited report is available for the utilization of cross-genome amplified microsatellite markers in genetic analysis, gene mapping and other applications in finger millet. This review highlights the importance and implication of microsatellite markers such as genomic SSR (gSSR) and Expressed Sequence Tag (EST)-SSR in cross-genome analysis in finger millet. Nowadays, crop improvement has been one of the major priority areas of research in agriculture. The genome assisted breeding and genetic engineering plays a very crucial role in enhancing crop productivity. The rapid advance in molecular marker technology is helpful for crop improvement. Therefore, this review will be very helpful to the researchers for understanding the importance and implication of SSR markers in closely related species.

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