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Aorarat Suntronpong. Karyological characterization and organization of repetitive elements of Asian Swamp Eel (Monopterus albus) inferred from molecular cytotenetic approach. Master's Degree(Genetics). Kasetsart University. Office of the University Library. : Kasetsart University, 2016.
Karyological characterization and organization of repetitive elements of Asian Swamp Eel (Monopterus albus) inferred from molecular cytotenetic approach
Name: Aorarat Suntronpong
Classification :.LCCS: QL638.A55
LCSH:
Eels
LCSH:
sian Swamp Eel
LCSH:
American eel
LCSH:
Chromosomes
LCSH:
DNA
Abstract:
Contrary to the chromosome number of synbranchid fishes and teleosts, the Asian swamp eel (Monopterus albus) showed the lowest number as 2n = 24. The karyotyping, Cbanding, and fluorescence in situ hybridization was performed to characterize chromosome constitution and investigate the genome organization of Asian swamp eels. For fluorescence in situ hybridization to specify position or location in the genome, four repetitive element groups (the 18S 28S rRNA gene, telomeric repeats, microsatellite repeat motifs, and Rex retroelements) were hybridized on M. albus metaphase chromosome. The hybridization signals of the 18S 28S rRNA genes were localized to the pericentromeric region of chromosome 4 at the same position with large PI-positive bands and large C-positive heterochromatin blocks, suggesting that the molecular structure of the pericentromeric regions of chromosome 4 has evolved in a concerted manner with amplification of the 18S 28S rRNA genes. (TTAGGG)n sequences were observed at the telomeric ends of all chromosomes. Eight of 19 microsatellite repeat motifs were dispersedly mapped on different chromosomes, suggesting that the amplification of microsatellite repeat motifs occurred independently in the genome of M. albus. Rex1 was observed at interstitial sites of all chromosomes and in the pericentromeric regions of most chromosomes, whereas Rex3 was scattered and localized to all chromosomes and Rex6 to several chromosomes. This suggests that these retroelements were independently amplified or lost in M. albus. Rex1 evolved under purifying selection where retrotranspositions have occurred during the teleost evolution, while Rex3 was influenced by pseudogene-like evolution, and Rex6 had more diverse activity in teleosts. Interestingly, M. albus Rex6 showed high interspecific sequence divergences from other teleosts, suggesting that the divergence of Rex6 sequences for M. albus and other teleosts was ancestral.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Kornsorn Srikulnath
Role:
Thesis Advisor
Name: Surin Peyachoknagul
Role:
Thesis Co-Advisor
Name: Narongrit Muangmai
Role:
Thesis Co-Advisor
Created:
2016
Modified:
2023-06-06
Issued:
2023-06-06
วิทยานิพนธ์/Thesis
application/pdf
URL: https://kasetsart.idm.oclc.org/login?url=https://www.lib.ku.ac.th/KUthesis/2559/aorarat-sun-all.pdf
CallNumber:
QL638.A55.A57
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Genetics
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.036663 วินาที
Aorarat Suntronpong
| Title | Contributor | Type |
|---|---|---|
| Karyological characterization and organization of repetitive elements of Asian Swamp Eel (Monopterus albus) inferred from molecular cytotenetic approach
มหาวิทยาลัยเกษตรศาสตร์ Aorarat Suntronpong | Kornsorn Srikulnath Surin Peyachoknagul Narongrit Muangmai | วิทยานิพนธ์/Thesis |
Kornsorn Srikulnath
| Title | Creator | Type and Date Create |
|---|---|---|
| Molecular barcoding of fifteen venomous snakes, and identification eight snake groups in Thailand using multiplex PCR
มหาวิทยาลัยเกษตรศาสตร์ Kornsorn Srikulnath ;Lawan Chanhome ;Surin Peyachoknagul | Arjaree Supikamolseni | วิทยานิพนธ์/Thesis |
| Analysis of CTNNBI gene mutation to deduce the direction of sex chromosome evolution and development of COI and Cytb genes barcoding of snakes in Thailand
มหาวิทยาลัยเกษตรศาสตร์ Kornsorn Srikulnath ;Lawan Chanhome ;Surin Peyachoknagul | Nararat Laopichienpong | วิทยานิพนธ์/Thesis |
| Karyological characterization and organization of repetitive elements of Asian Swamp Eel (Monopterus albus) inferred from molecular cytotenetic approach
มหาวิทยาลัยเกษตรศาสตร์ Kornsorn Srikulnath ;Surin Peyachoknagul;Narongrit Muangmai | Aorarat Suntronpong | วิทยานิพนธ์/Thesis |
| The Snakeskin Gourami (Trichopodus pectoralis) tends to exhibit XXXY sex determination
มหาวิทยาลัยเกษตรศาสตร์ Kornsorn Srikulnath | Thitipong Panthum | วิทยานิพนธ์/Thesis |
Surin Peyachoknagul
Narongrit Muangmai