Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.scienta.2014.02.027 |
Molecular polymorphism and phylogenetic relationships within Tunisian date palm (Phoenix dactylifera L.): Evidence of non-coding trnL-trnF regions of chloroplast DNAs | |
Soumaya, Rhouma-Chatti1; Sarra, Choulak1; Salwa, Zehdi-Azzouzi2; Khaled, Chatti1; Khaled, Said1 | |
通讯作者 | Soumaya, Rhouma-Chatti |
来源期刊 | SCIENTIA HORTICULTURAE
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ISSN | 0304-4238 |
EISSN | 1879-1018 |
出版年 | 2014 |
卷号 | 170页码:32-38 |
英文摘要 | Phoenix dactylifera L. were analyzed for DNA sequence diversity in the non-coding region of chloroplast DNA. The trnL-trriF intergenic spacer sequences were used as genetic markers to establish refined genetic relationships for differentiating date-palm accessions collected from Tunisian oasis. A single DNA band of approximately 400 bp was amplified from each Tunisian date-palm cultivars. Using the Kimura-2 method, nucleotide sequences were aligned using the MEGA 5.2 program to calculate pairwise divergence of trnL-trnF spacer sequences between cultivars. The relatively high AT values (60.5-67.6%) of trriL-trriF intergenic spacer may explain the high proportion of the identified transversions (ti/tv = 0.67). These results suggest the rate of nucleotide diversity with a great variation level of chloroplast non-coding region. The analyzed data illustrated a considerable level of variability in the genetic pool of the local germplasm. In fact, relationships inferred from the cpDNA analysis suggest several clades, which do not show geographical correspondence. In the other hand, 14 haplotypes were detected among 31 individuals examined, yielding a haplotype diversity of 0.854 and a level of nucleotide diversity of (0.0081). Selective neutrality tests show that Tajima’s as well as Fu and Li’s tests were negative and not significant in the studied cultivars. The cytoplasm variability indicates a narrow genetic base within date-palm cultivars. The opportunity of the designed methods is discussed with the molecular characterization of genotypes in order to enhance the conservation and the improvement of the local date-palm germplasm. (C) 2014 Elsevier B.V. All rights reserved. |
英文关键词 | Phoenix dactylifera L. trnL-trnF spacer Genetic diversity Phylogenetic relationships |
类型 | Article |
语种 | 英语 |
国家 | Tunisia |
收录类别 | SCI-E |
WOS记录号 | WOS:000336465000005 |
WOS关键词 | GENETIC DIVERSITY ; SUBSTITUTION BIAS ; NUCLEAR ; EVOLUTION ; SEQUENCES ; SOFTWARE ; PATTERNS ; GENOME ; RATES ; RBCL |
WOS类目 | Horticulture |
WOS研究方向 | Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184902 |
作者单位 | 1.Univ Monastir, Inst Super Biotechnol Monastir, Lab Rech Genet Biodivers & Valorisat Bioressource, Monastir 5000, Tunisia; 2.Fac Sci Tunis, Lab Genet Mol Immunol & Biotechnol, Tunis 2092, Tunisia |
推荐引用方式 GB/T 7714 | Soumaya, Rhouma-Chatti,Sarra, Choulak,Salwa, Zehdi-Azzouzi,et al. Molecular polymorphism and phylogenetic relationships within Tunisian date palm (Phoenix dactylifera L.): Evidence of non-coding trnL-trnF regions of chloroplast DNAs[J],2014,170:32-38. |
APA | Soumaya, Rhouma-Chatti,Sarra, Choulak,Salwa, Zehdi-Azzouzi,Khaled, Chatti,&Khaled, Said.(2014).Molecular polymorphism and phylogenetic relationships within Tunisian date palm (Phoenix dactylifera L.): Evidence of non-coding trnL-trnF regions of chloroplast DNAs.SCIENTIA HORTICULTURAE,170,32-38. |
MLA | Soumaya, Rhouma-Chatti,et al."Molecular polymorphism and phylogenetic relationships within Tunisian date palm (Phoenix dactylifera L.): Evidence of non-coding trnL-trnF regions of chloroplast DNAs".SCIENTIA HORTICULTURAE 170(2014):32-38. |
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