Genetic Relationships of Genus Cymbidium Based on Random Amplified Polymorphic DNA Analysis

2015 ◽  
Vol 23 (2) ◽  
pp. 57-62
Author(s):  
I-Jin Choi ◽  
◽  
Mi-Seon Kim
HortScience ◽  
1999 ◽  
Vol 34 (7) ◽  
pp. 1263-1265 ◽  
Author(s):  
U. Galderisi ◽  
M. Cipollaro ◽  
G. Di Bernardo ◽  
L. De Masi ◽  
G. Galano ◽  
...  

Random amplified polymorphic DNA (RAPD) analysis is currently used to estimate genetic relationships in plants. We have used RAPD analysis to distinguish six different cultivars of Ficus carica, and several of their clones, that are widespread in the Campania Region of Southern Italy. Among these cultivars, `Bianco del Cilento' has unique characteristics, and is particularly useful for drying and for the manufacture of syrups. The protection of this cultivar is important to the Campania Region. We have utilized molecular markers to allow accurate identification of this cultivar, making it possible to control the quality of products and prevent fraudulent commerce. DNA was extracted from leaves and amplified by PCR using random oligonucleotide primers. The amplification patterns obtained with five decamer primers were useful for distinguishing all six cultivars analyzed. `Bianco del Cilento' was identified by two primers. The banding patterns were scored and used in similarity value calculations to estimate genetic relationships.


2000 ◽  
Vol 48 (6) ◽  
pp. 753 ◽  
Author(s):  
Keiya Isoda ◽  
Tim Brodribb ◽  
Susumu Shiraishi

Random amplified polymorphic DNA (RAPD) and single-strand conformation polymorphism (SSCP) analyses were employed for investigating genetic relationships of three Athrotaxis D.Don species. Twenty-nine RAPD primers produced 103 polymorphic bands. Principal component analysis revealed the genomic differentiation among three Athrotaxis species. Mean genetic distance (mean d) between A. selaginoides D.Don and A. cupressoides D.Don was 0.89. Mean d values were reduced to 0.42/0.54 between A. laxifolia Hook. and A. selaginoides/A. cupressoides, respectively. Intraspecific mean d of A. selaginoides and A. cupressoides were, respectively, 0.03 and 0.11. These values indicated that A. laxifolia, which is regarded as a hybrid between A. selaginoides and A. cupressoides, is genetically intermediate between A. selaginoides and A. cupressoides. This genetic characteristic and previously reported morphological characteristics suggest the hybrid origins of A. laxifolia. The genomic composition of A. laxifolia was estimated by the number of bands specific to A. selaginoides or A. cupressoides in order to determine the genomic contribution of these two species to its proposed hybrid, A. laxifolia. All of the five individuals investigated herein possessed genomes derived almost evenly from A. selaginoides and A. cupressoides. Furthermore, the pollen donor of A. laxifolia was determined by SSCP analysis of the atpA gene on chloroplast DNA. Because all of the five A. laxifolia possessed the A. selaginoides-type chloroplast genome, A. laxifolia would be a hybrid of A. selaginoides as a paternal parent and A. cupressoides as a maternal parent.


2004 ◽  
Vol 27 (12) ◽  
pp. 1270-1274 ◽  
Author(s):  
Sang-Yong Park ◽  
Chang-Soo Yook ◽  
Toshihiro Nohara ◽  
Takayuki Mizutani ◽  
Takayuki Tanaka

Genome ◽  
2000 ◽  
Vol 43 (4) ◽  
pp. 724-727 ◽  
Author(s):  
Wenguang Cao ◽  
G Scoles ◽  
P Hucl ◽  
R N Chibbar

The genetic relationships among the five groups of hexaploid wheat: common, spelta, macha, vavilovii, and semi-wild wheat (SWW) are not clear. Random amplified polymorphic DNA (RAPD) analysis was used to assess phylogenetic relationships among these five morphological groups of hexaploid wheat. RAPD data were analyzed using the NTSYS-PC computer program to generate Jaccard genetic similarity coefficients. A dendrogram based on RAPD analysis grouped 15 accessions into five distinct clusters. These results are in agreement with those based on morphological classification, suggesting that common wheat is most closely related to SWW, followed by spelta, vavilovii, and macha.Key words: RAPD, macha, spelta, vavilovii, semi-wild wheat, phylogenetic relationships.


2005 ◽  
Vol 47 (3) ◽  
pp. 119-123 ◽  
Author(s):  
Sarah Desirée Barbosa Cavalcanti ◽  
José Eduardo Levi ◽  
Kátia Cristina Dantas ◽  
José Eduardo Costa Martins

Our purpose was to compare the genetic polymorphism of six samples of P. brasiliensis (113, 339, BAT, T1F1, T3B6, T5LN1), with four samples of P. cerebriformis (735, 741, 750, 361) from the Mycological Laboratory of the Instituto de Medicina Tropical de São Paulo, using Random Amplified Polymorphic DNA Analysis (RAPD). RAPD profiles clearly segregated P. brasiliensis and P. cerebriformis isolates. However, the variation on band patterns among P. cerebriformis isolates was high. Sequencing of the 28S rDNA gene showed nucleotide conservancy among P. cerebriformis isolates, providing basis for taxonomical grouping, and disclosing high divergence to P. brasiliensis supporting that they are in fact two distinct species. Moreover, DNA sequence suggests that P. cerebriformis belongs in fact to the Aspergillus genus.


1999 ◽  
Vol 41 (5) ◽  
pp. 291-295 ◽  
Author(s):  
Abdel-Hamid Zaki ABDEL-HAMID ◽  
Jeanne Blanco de MOLFETTA ◽  
Vania FERNANDEZ ◽  
Vanderlei RODRIGUES

Susceptibility of snails to infection by certain trematodes and their suitability as hosts for continued development has been a bewildering problem in host-parasite relationships. The present work emphasizes our interest in snail genetics to determine what genes or gene products are specifically responsible for susceptibility of snails to infection. High molecular weight DNA was extracted from both susceptible and non-susceptible snails within the same species Biomphalaria tenagophila. RAPD was undertaken to distinguish between the two types of snails. Random primers (10 mers) were used to amplify the extracted DNA by the polymerase chain reaction (PCR) followed by polyacrylamide gel electrophoresis (PAGE) and silver staining. The results suggest that RAPD represents an efficient means of genome comparison, since many molecular markers were detected as genetic variations between susceptible and non-susceptible snails.


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