Molecular Markers and Conservation of Plant Species in the Latin-America: The Case of Phaedranassa viridiflora (Amaryllidaceae)

2013 ◽  
Vol 79 (4) ◽  
pp. 507-527 ◽  
Author(s):  
Nora H. Oleas ◽  
Alan W. Meerow ◽  
Javier Francisco-Ortega
Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1744
Author(s):  
Marco A. Rodriguez-Dominguez ◽  
Dennis Konnerup ◽  
Hans Brix ◽  
Carlos A. Arias

The review aims to report the state-of-the-art constructed wetlands (CW) in the Latin America and Caribbean (LAC) region not limited to national and local conditions. The aim is with a broader view, to bring updated and sufficient information, to facilitate the use of the CW technology in the different countries of LAC. Thus, 520 experiences extracted from the 169 reviewed documents in 20 countries were analyzed. According to the data, horizontal subsurface flow wetlands are the most reported CW in the region (62%), the second most common CW technology in the region is free water surface CW (17%), then vertical flow systems (9%), followed by intensified constructed wetlands (8%), and finally French systems (4%). The performance for nutrient removal is analyzed, finding that the mean of Chemical Oxygen Demand (COD), Total Nitrogen (TN), and Total Phosphorous (TP) removal efficiencies varies from 65% to 83%, 55% to 72%, and 30% to 84%, respectively. The results suggest a generally good performance for COD and TN removal, but a low performance for TP removal. Regarding plant species used for CWs, 114 different plant species were reported, being until now the most extensive report about plant species used in CWs in the LAC region.


Author(s):  
Dilek Tekdal

Vuralia turcica is endemic to Turkey and currently endangered. Little molecular information is available for this plant. Previous characterization and classification of V. turcica have been based on the DNA sequences of the ITS region. Molecular markers are essential for studying of genotyping and biogeography, but any of each marker is not enough to characterize a plant species in its use alone. In this study, the chloroplast rbcL and trnL regions were amplified in V. turcica using the primers that have been published in the previous studies. Successfully amplified DNA fragments were extracted and commercially sequenced. The partial rbcL and trnL sequences were submitted to the NCBI database (accession number KX164510, KX164511, respectively). Amplified both DNA of two regions of rbcL and trnL were used to construct a phylogenetic tree.


2019 ◽  
Author(s):  
Hossain Sohrawardy ◽  
Salina Sultana

Abstract Background : Molecular markers do not influence the environment and age of the plant species. DNA fingerprinting is a useful tool for varietal protection for the seed industry. Molecular fingerprinting helps to maintain the genetic purity of parent lines and hybrids. Result: Primer PP 24 and PP 53 showed polymorphic band to Morich Super F 1 and its parents. Conclusion: Morich Super hybridity test conducts at the Lal Teer Biotech Laboratory using these primers.


1997 ◽  
Vol 70 (3) ◽  
pp. 237-250 ◽  
Author(s):  
C. MALIEPAARD ◽  
J. JANSEN ◽  
J. W. VAN OOIJEN

Linkage analysis and map construction using molecular markers is far more complicated in full-sib families of outbreeding plant species than in progenies derived from homozygous parents. Markers may vary in the number of segregating alleles. One or both parents may be heterozygous, markers may be dominant or codominant and usually the linkage phases of marker pairs are unknown. Because of these differences, marker pairs provide different amounts of information for the estimation of recombination frequencies and the linkage phases of the markers in the two parents, and usually these have to be estimated simultaneously. In this paper we present a complete overview of all possible configurations of marker pairs segregating in full-sib families. Maximum likelihood estimators for the recombination frequency and LOD score formulas are presented for all cases. Statistical properties of the estimators are studied analytically and by simulation. Specific problems of dominant markers, in particular with respect to the probability of detecting linkage, the probability of obtaining zero estimates, and the ability to distinguish linkage phase combinations, and consequences for mapping studies in outbred progenies are discussed.


2011 ◽  
Vol 9 (1) ◽  
pp. 32-43 ◽  
Author(s):  
Tatyana V Matveeva ◽  
Olga A Pavlova ◽  
Denis I Bogomaz ◽  
Andrey E Demkovich ◽  
Ludmila A Lutova

 In this review we summarized the information on application of molecular markers for plant species identification and phylogenetics: positive sides and limitations of main markers, representing sequencing data of taxonomically important chloroplast and nuclear DNA regions. Markers, based on polymorphism of PCR and restriction products, are also discussed as accessorial markers in phylogenetic studies. 


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