Allelic diversity of simple sequence repeats among elite inbred lines of cultivated sunflower

Genome ◽  
2002 ◽  
Vol 45 (4) ◽  
pp. 652-660 ◽  
Author(s):  
Ju-Kyung Yu ◽  
Jodie Mangor ◽  
Lucy Thompson ◽  
Keith J Edwards ◽  
Mary B Slabaugh ◽  
...  
Keyword(s):  
Ssr Markers ◽  
Dna Sequences ◽  
Dna Markers ◽  
Allelic Diversity ◽  
Inbred Lines ◽  
Genetic Maps ◽  
Dna Polymorphisms ◽  
Tetranucleotide Repeats ◽  
The Mean ◽  
Simple Sequence

Simple sequence repeat (SSR) markers were developed for cultivated sunflower (Helianthus annuus L.) from the DNA sequences of 970 clones isolated from genomic DNA libraries enriched for (CA)n, (CT)n, (CAA)n, (CATA)n, or (GATA)n. The clones harbored 632 SSRs, of which 259 were unique. SSR markers were developed for 130 unique SSRs by designing and testing primers for 171 unique SSRs. Of the total, 74 SSR markers were polymorphic when screened for length polymorphisms among 16 elite inbred lines. The mean number of alleles per locus was 3.7 for dinucleotide, 3.6 for trinucleotide, and 9.5 for tetranucleotide repeats and the mean polymorphic information content (PIC) scores were 0.53 for dinucleotide, 0.53 for trinucleotide, and 0.83 for tetranucleotide repeats. Cluster analyses uncovered patterns of genetic diversity concordant with patterns produced by RFLP fingerprinting. SSRs were found to be slightly more polymorphic than RFLPs. Several individual SSRs were significantly more polymorphic than RFLP and other DNA markers in sunflower (20% of the polymorphic SSR markers had PIC scores ranging from 0.70 to 0.93). The newly developed SSRs greatly increase the supply of sequence-based DNA markers for DNA fingerprinting, genetic mapping, and molecular breeding in sunflower; however, several hundred additional SSR markers are needed to routinely construct complete genetic maps and saturate the genome.Key words: microsatellites, Helianthus, Compositae, DNA polymorphisms.

Simple sequence repeat DNA markers in alfalfa and perennial and annual Medicago species

Genome ◽  
1997 ◽  
Vol 40 (6) ◽  
pp. 887-895 ◽  
Author(s):  
Noa Diwan ◽  
Arvind A. Bhagwat ◽  
Gary B. Bauchan ◽  
Perry B. Cregan
Keyword(s):  
Ssr Markers ◽  
Dna Markers ◽  
Simple Sequence Repeat ◽  
Genetic Relatedness ◽  
Mammalian Species ◽  
Genetic Maps ◽  
Sequence Repeat ◽  
Annual Medicago ◽  
Medicago Species ◽  
Simple Sequence

Simple sequence repeat (SSR) or microsatellite DNA markers have been shown to function well in plant and mammalian species for genetic map construction and genotype identification. The objectives of the work reported here were to search GenBank for the presence of SSR-containing sequences from the genus Medicago, to assess the presence and frequency of SSR DNA in the alfalfa (Medicago sativa (L.) L. &L.) genome, and to examine the function of selected markers in a spectrum of perennial and annual Medicago species. The screening of an alfalfa genomic DNA library and sequencing of clones putatively containing SSRs indicated approximately 19 000 (AT)n + (CT)n + (CA)n + (ATT)n SSRs in the tetraploid genome. Inheritance was consistent with Mendelian expectations at four selected SSR loci with different core motifs. Additionally, genotypes of a range of Medicago species, including 10 perennial subspecies of the M. sativa complex and other perennial and annual Medicago species, were analyzed at each of the loci to ascertain the presence, number, and size of SSR alleles at each locus in each genotype. These studies indicate that SSR markers can function in alfalfa for the construction of genetic maps and will also be useful in a range of Medicago species for purposes of assessing genetic relatedness and taxonomic relationships, and for genotype identification.Key words: microsatellites, SSR markers, simple sequence repeats, alfalfa, annual medics.

LEGITIMACY OF PROGENIES USING SSR MARKERS AS CONTROLLING SYSTEM AND EARLIER SELECTION IN THE OIL PALM NURSERY (Elaeis guineensis JACQ.)

2018 ◽  
Vol 25 (1) ◽  
pp. 21-30
Author(s):  
Rokhana Faizah ◽  
Sri Wening ◽  
Abdul Razak Purba
Keyword(s):  
Dna Fingerprinting ◽  
Ssr Markers ◽  
Oil Palm ◽  
Dna Markers ◽  
Elaeis Guineensis ◽  
Gene Marker ◽  
Controlling System ◽  
Crossing Probability ◽  
Simple Sequence

Information of legitimacy of oil palm progenies is important to guaranty the quality and to control commercial seeds procedures. A true and legitimate cross will produce progeny which has a combination of their parent's allele. The information could be obtained early in the nursery stage through DNA fingerprinting analysis. Simple Sequence Repeats (SSR) is one of DNA markers used for DNA fingerprinting, since the marker system has advantages to acquire information of allele per individual in population and efficiency diverse allele of progeny and their parents. The aim of the research is to obtain legitimacy of 12 progenies analyzing in the oil palm nursery stage. Thirteen SSR markers were used to analyze 12 crossings number of oil palm. The genotypes data by alleles of SSR inferred and quantified using Gene Marker® Software version 2.4.0 Soft Genetics® LLC and analyzed based on Mendel's Law of Segregation. The result showed based on heredity pattern of progeny and their parent's allele that progenies H were indicated genetically derived from their known parents while progenies from A and G indicated as illegitimate crossing. Probability value for legitimacy of progenies of 9 other crosses has 0.031 and 0.5. Legitimacy analysis of progeny using SSR markers could be used to control the quality of crossing material and earlier selection in the oil palm nursery.

Analysis of the polymorphism of expressed sequencetag-Simple sequence repeat in quail

2016 ◽  
Author(s):  
Jun Yan Bai ◽  
You Zhi Pang ◽  
Yan Xia Qi ◽  
Xiao Hui Zhang ◽  
Yin Xian Yun
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Simple Sequence Repeat ◽  
Genetic Improvement ◽  
Melanin Synthesis ◽  
Sequence Repeat ◽  
Average Heterozygosity ◽  
Information Contents ◽  
The Mean ◽  
Simple Sequence

Aiming at accelerating the application of molecular markers in the genetic improvement of quails, six EST-SSR markers were successfully developed using a bioinformatics method. Polymorphisms of three quail populations (Chinese yellow, China black and Korean quail) were detected. The results showed that there were 2-6 alleles in six EST-SSR markers. The mean polymorphism information contents of Chinese yellow , China blackand Korean quail were 0.5451, 0.4962 and 0.4937, respectively. The average heterozygosity values were 0.6134, 0.5759 and 0.5613. Among the six EST-SSR markers, three were highly polymorphicand the others were moderately polymorphic. The newly-developed six EST-SSR markers may be used to determine the genetic diversity of quails. The six EST-SSR markers identified were related to carbohydrate metabolism and melanin synthesis, but the specific mechanisms need to be further analyzed.

scholarly journals LEGITIMACY OF PROGENIES USING SSR MARKERS AS CONTROLLING SYSTEM AND EARLIER SELECTION IN THE OIL PALM NURSERY (Elaeis guineensis JACQ.)

2017 ◽  
Vol 25 (1) ◽  
pp. 21-30
Author(s):  
Rokhana Faizah ◽  
Sri Wening ◽  
Abdul Razak Purba
Keyword(s):  
Dna Fingerprinting ◽  
Ssr Markers ◽  
Oil Palm ◽  
Dna Markers ◽  
Elaeis Guineensis ◽  
Gene Marker ◽  
Controlling System ◽  
Crossing Probability ◽  
Simple Sequence

Information of legitimacy of oil palm progenies is important to guaranty the quality and to control commercial seeds procedures. A true and legitimate cross will produce progeny which has a combination of their parent's allele. The information could be obtained early in the nursery stage through DNA fingerprinting analysis. Simple Sequence Repeats (SSR) is one of DNA markers used for DNA fingerprinting, since the marker system has advantages to acquire information of allele per individual in population and efficiency diverse allele of progeny and their parents. The aim of the research is to obtain legitimacy of 12 progenies analyzing in the oil palm nursery stage. Thirteen SSR markers were used to analyze 12 crossings number of oil palm. The genotypes data by alleles of SSR inferred and quantified using Gene Marker® Software version 2.4.0 Soft Genetics® LLC and analyzed based on Mendel's Law of Segregation. The result showed based on heredity pattern of progeny and their parent's allele that progenies H were indicated genetically derived from their known parents while progenies from A and G indicated as illegitimate crossing. Probability value for legitimacy of progenies of 9 other crosses has 0.031 and 0.5. Legitimacy analysis of progeny using SSR markers could be used to control the quality of crossing material and earlier selection in the oil palm nursery.

scholarly journals Map Construction Of Simple Sequence Repeat Developed For Introgression Philippine Downy Mildew Resistance Gene In Maize

Zuriat ◽  
2015 ◽  
Vol 12 (2) ◽  
Author(s):  
D. Ruswandi ◽  
D. M. Hautea ◽  
A. M. Salazar ◽  
R. M. Lantican ◽  
A. L. Carpena ◽  
...  
Keyword(s):  
Resistance Gene ◽  
Ssr Markers ◽  
Dna Markers ◽  
Simple Sequence Repeat ◽  
Average Distance ◽  
Downy Mildew Resistance ◽  
Plant Genomes ◽  
Map Construction ◽  
Molecular Map ◽  
Simple Sequence

Simple sequence repeats (SSRs) is an important DNA markers for mapping plant genomes particularly in mapping quantitative trait loci (QTL). To identify and map SSR markers for introgression resistance gene against Peronosclerospora philippinensis in maize, the parental materials (P 345 and Pi 23) together with 142 genotypes of BC1F1 of Pi 23 ×P 345 population were used. A total of 50 SSR markers were genotyped. However, only thirty-three markers were integrated into a molecular map together with RFLP and RGA markers. A molecular map of SSR was successfully constructed together with RFLP and RGA into 10 chromosomes. It covered a total map length of 1822 cM with an average distance of 18.22 cM between markers.

Genetic diversity of mungbean (Vigna radiata L.) germplasm in Indonesia

2014 ◽  
Vol 12 (S1) ◽  
pp. S91-S94 ◽  
Author(s):  
Puji Lestari ◽  
Sue Kyung Kim ◽  
Reflinur ◽  
Yang Jae Kang ◽  
Nurwita Dewi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Vigna Radiata ◽  
Diversity Index ◽  
Polymorphic Information Content ◽  
Conservation Strategy ◽  
Low Genetic Diversity ◽  
Breeding Programmes ◽  
The Mean ◽  
Simple Sequence

Despite widespread mungbean [Vigna radiata (L.) Wilczek] consumption in Indonesia, few molecular studies have been carried out on accessions and available data are minimal. In this study, we used 30 newly developed simple sequence repeat (SSR) markers designed from the mapped sequence scaffolds of the Korean Sunhwanokdu and Gyeonggijaerae 5 mungbean genomes. These markers were used to examine loci in 83 mungbean accessions collected from diverse geographical areas in Indonesia. A total of 107 alleles were detected among the accessions with 29 polymorphic markers. However, the mean of polymorphic information content (0.33) value and diversity index (0.38) value was indicative of low genetic diversity in this germplasm. The mungbean population structure was not clearly differentiated and the number of subpopulations was unclear. Neighbour-joining tree analysis revealed that the genetic cluster did not reflect the geographical origin of the accessions. Interestingly, the most agriculturally improved varieties were genetically similar to some landraces from one of the main mungbean-producing regions. These newly developed SSR markers could be useful for detecting genetic variability as a basis for establishing a conservation strategy for mungbean germplasm with the aim of enhancing Indonesian breeding programmes.

Genetic diversity analysis of yam cultivars (Dioscorea rotundata Poir.) in Benin using simple sequence repeat (SSR) markers

2007 ◽  
Vol 5 (02) ◽  
pp. 71-81 ◽  
Author(s):  
Serge Tostain ◽  
Clément Agbangla ◽  
Nora Scarcelli ◽  
Cédric Mariac ◽  
Ogoubi Daïnou ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Simple Sequence Repeat ◽  
Management Practices ◽  
Genetic Relationships ◽  
Sequence Repeat ◽  
Dioscorea Rotundata ◽  
Tuber Crop ◽  
The Mean ◽  
Simple Sequence

Guinea yam (Dioscorea rotundataPoir.) is a dioecious vegetatively propagated tuber crop. It is widely cultivated by traditional techniques in West Africa, its area of origin. The genetic diversity of 146 accessions from Benin was analysed using 10 polymorphic simple sequence repeat (SSR) nuclear markers and agromorphological traits. An average of 8.4 alleles per locus was detected. The mean heterozygosity was 0.57 and the mean polymorphism information content (PIC) for polymorphic markers was 0.51. Some cultivars (23%) were found to have an identical genotype for the 10 markers. The structure of the genetic diversity observed in Benin is the result of farmers' crop management practices and their know-how. The cultivar diversity had a geographical component. We also noted major differentiation between early and late cultivars, with higher diversity in the early ones. Cultivars from northern Benin and early cultivars had the greatest allelic richness. SSR markers proved to be powerful tools for fingerprinting each cultivar and analysing their genetic relationships. The results of this study could be useful for defining a strategy for the conservation of genetic diversity in yams.

scholarly journals Genetic variation and DNA fingerprinting of durian types in Malaysia using simple sequence repeat (SSR) markers

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4266 ◽  
Author(s):  
Ging Yang Siew ◽  
Wei Lun Ng ◽  
Sheau Wei Tan ◽  
Noorjahan Banu Alitheen ◽  
Soon Guan Tan ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Genetic Resources ◽  
Dna Fingerprinting ◽  
Ssr Markers ◽  
Dna Sequences ◽  
Simple Sequence Repeat ◽  
Germplasm Collection ◽  
Direct Result ◽  
Sequence Repeat ◽  
Simple Sequence

Durian (Durio zibethinus) is one of the most popular tropical fruits in Asia. To date, 126 durian types have been registered with the Department of Agriculture in Malaysia based on phenotypic characteristics. Classification based on morphology is convenient, easy, and fast but it suffers from phenotypic plasticity as a direct result of environmental factors and age. To overcome the limitation of morphological classification, there is a need to carry out genetic characterization of the various durian types. Such data is important for the evaluation and management of durian genetic resources in producing countries. In this study, simple sequence repeat (SSR) markers were used to study the genetic variation in 27 durian types from the germplasm collection of Universiti Putra Malaysia. Based on DNA sequences deposited in Genbank, seven pairs of primers were successfully designed to amplify SSR regions in the durian DNA samples. High levels of variation among the 27 durian types were observed (expected heterozygosity, HE = 0.35). The DNA fingerprinting power of SSR markers revealed by the combined probability of identity (PI) of all loci was 2.3×10−3. Unique DNA fingerprints were generated for 21 out of 27 durian types using five polymorphic SSR markers (the other two SSR markers were monomorphic). We further tested the utility of these markers by evaluating the clonal status of shared durian types from different germplasm collection sites, and found that some were not clones. The findings in this preliminary study not only shows the feasibility of using SSR markers for DNA fingerprinting of durian types, but also challenges the current classification of durian types, e.g., on whether the different types should be called “clones”, “varieties”, or “cultivars”. Such matters have a direct impact on the regulation and management of durian genetic resources in the region.

scholarly journals Interspecies and intraspecies genetic diversity of Ongole Grade cattle and Madura cattle based on microsatellite DNA markers

2018 ◽  
Vol 19 (4) ◽  
pp. 1593-1600
Author(s):  
SUTARNO . ◽  
NINA KURNIANINGRUM ◽  
ELISA HERAWATI ◽  
AHMAD DWI SETYAWAN
Keyword(s):  
Genetic Diversity ◽  
Dna Sequences ◽  
Dna Markers ◽  
Microsatellite Loci ◽  
Microsatellite Dna ◽  
Polymorphic Information Content ◽  
Entire Genome ◽  
Genetic Characteristics ◽  
Microsatellite Dna Markers ◽  
The Mean

Sutarno, Kurnianingrum N, Herawati E, Setyawan AD. 2018. Interspecies and intraspecies genetic diversity of Ongole Gradecattle and Madura cattle based on microsatellite DNA markers. Biodiversitas 19: 1593-1600. DNA microsatellite has been extensivelyemployed for estimating the degree of kinship between genotypes and improving the quality of cattle products. Microsatellite markersare short-patterned DNA sequences and repeated tandem (sequentially) with 2-5 nucleotide units scattering the entire genome. Thepurpose of this study was to investigate the genetic characteristics of inter and intraspecies of Ongole Grade cattle and Madura cattleusing microsatellite DNA markers. Blood samples from 20 individuals of each species were extracted by the method referring to WizardGenomic DNA Purification Kit (Promega, USA) and PCR amplification was performed using 5 microsatellite loci, i.e., BM1824,ETH225, INRA005, MM12, and TGLA227. Results of the genetic characteristics of both species were calculated using the POPGENEprogram version 1.31. The data suggest that there is a genetic diversity of inter and intraspecies of Ongole Grade cattle and Maduracattle. The average value of Shannon's Information Index (I) at all microsatellite loci for Ongole Grade cattle was 0.76 and for Maduracattle was 1.12. Meanwhile, the average interspecies I value was 1.03. The mean intraspecies Polymorphic Information Content (PIC) ofOngole Grade and Madura cattle was 0.43, and 0.63, respectively, and the mean interspecies PIC value was 0.57. The data altogethersuggest that all loci meet the standards as being informative markers in the assessment of genetic population because it has a PIC value>0.5 especially for intraspecies of Madura cattle.

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