Genetic diversity and differentiation within three species of the family Lauraceae in southeast China

2012 ◽  
Vol 44 ◽  
pp. 317-324 ◽  
Author(s):  
Rui Zhang ◽  
Zhichun Zhou ◽  
Guoqing Jin ◽  
Shenghua Wang ◽  
Xiuhua Wang
Keyword(s):  
Genetic Diversity ◽  
Southeast China ◽  
The Family

scholarly journals A systematic revision of Capparaceae and Cleomaceae in Egypt: an evaluation of the generic delimitations of Capparis and Cleome using ecological and genetic diversity

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Mohamed Abd. S. El zayat ◽  
Mahmoud El Sayd Ali ◽  
Mohamed Hamdy Amar
Keyword(s):  
Genetic Diversity ◽  
Morphological Characteristics ◽  
Systematic Position ◽  
Diversity Analysis ◽  
Polymorphic Markers ◽  
Ecological Distribution ◽  
Specific Group ◽  
Systematic Revision ◽  
Dna Evidence ◽  
The Family

Abstract Background The Capparaceae family is commonly recognized as a caper, while Cleomaceae represents one of small flowering family within the order Brassicales. Earlier, Cleomaceae was included in the family Capparaceae; then, it was moved to a distinct family after DNA evidence. Variation in habits and a bewildering array of floral and fruit forms contributed to making Capparaceae a “trash-basket” family in which many unrelated plants were placed. Indeed, family Capparaceae and Cleomaceae are in clear need of more detailed systematic revision. Results Here, in the present study, the morphological characteristics and the ecological distribution as well as the genetic diversity analysis among the twelve species of both Capparaceae and Cleomaceae have been determined. The genetic analysis has been checked using 15 ISSR, 30 SRAP, and 18 ISTR to assess the systematic knots between the two families. In order to detect the molecular phylogeny, a comparative analysis of the three markers was performed based on the exposure of discriminating capacity, efficiency, and phylogenetic heatmap. Our results indicated that there is a morphological and ecological variation between the two families. Moreover, the molecular analysis confirmed that ISTR followed by SRAP markers has superior discriminating capacity for describing the genetic diversity and is able to simultaneously distinguish many polymorphic markers per reaction. Indeed, both the PCA and HCA data have drawn a successful annotation relationship in Capparaceae and Cleome species to evaluate whether the specific group sort individual or overlap groups. Conclusion The outcomes of the morphological and ecological characterization along with the genetic diversity indicated an insight solution thorny interspecies in Cleome and Gynandropsis genera as a distinct family (Cleomaceae) and the other genera (Capparis, Cadaba, Boscia, and Maerua) as Capparaceae. Finally, we recommended further studies to elucidate the systematic position of Dipterygium glaucum.

scholarly journals Genetic Diversity and Population Structure of Five Meretrix lamarckii Populations Along the Southeast China Sea

2020 ◽  
Vol 52 (4) ◽  
Author(s):  
Jiantong Feng ◽  
Xueping Wen ◽  
Yahong Guo ◽  
Yingying Ye ◽  
Jiji Li ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Southeast China ◽  
China Sea

scholarly journals Genetic and Morphological Characterization of Mangifera indica L. Growing in Egypt

HortScience ◽  
2018 ◽  
Vol 53 (9) ◽  
pp. 1266-1270 ◽  
Author(s):  
Nader R. Abdelsalam ◽  
Hayssam M. Ali ◽  
Mohamed Z.M. Salem ◽  
Elsayed G. Ibrahem ◽  
Mohamed S. Elshikh
Keyword(s):  
Genetic Diversity ◽  
Mangifera Indica ◽  
Morphological Characteristics ◽  
Morphological Characterization ◽  
Molecular Techniques ◽  
Germplasm Management ◽  
Fruit Crops ◽  
The Family ◽  
High Diversity

Mango (Mangifera indica L.) is a fruit crops belong to the family Anacardiaceae and is the oldest cultivated tree worldwide. Cultivars maintained in Egypt have not been investigated previously. Mango was first brought to Egypt from South Asia. Morphological and molecular techniques were used to identify the genetic diversity within 28 mango cultivars. SSR and EST-SSR were used for optimizing germplasm management of mango cultivars. Significant variations were observed in morphological characteristics and genetic polymorphism, as they ranged from 0.71% to 100%. High diversity was confirmed as a pattern of morphological and genotypes data. Data from the present study may be used to calculate the mango relationship and diversity currently grown in Egypt.

scholarly journals Spatial Genetic Patterns and Distribution Dynamics of the Rare Oak Quercus chungii: Implications for Biodiversity Conservation in Southeast China

Forests ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 821 ◽  
Author(s):  
Jiang ◽  
Xu ◽  
Deng
Keyword(s):  
Genetic Diversity ◽  
Biodiversity Conservation ◽  
Species Distribution ◽  
Distribution Model ◽  
Genetic Admixture ◽  
Future Climate Change ◽  
Distribution Dynamics ◽  
Southeast China ◽  
Genetic Patterns ◽  
Nanling Mountains

A rapidly changing climate and frequent human activity influences the distribution and community structure of forests. Increasing our knowledge about the genetic diversity and distribution patterns of trees is helpful for forest conservation and management. In this study, nSSRs (nuclear simple sequence repeats) were integrated with a species distribution model (SDM) to investigate the spatial genetic patterns and distribution dynamics of Quercus chungii F.P.Metcalf, a rare oak in the subtropics of southeast China. A total of 188 individuals from 11 populations distributed across the natural range of Q. chungii were genotyped using nine nSSRs. The STRUCTURE analysis indicated that genetic admixture was present in all populations, but the population genetic variation and genetic differentiation were related to their geographical distributions. The SDM result indicated that Q. chungii retreated to the Nanling Mountains and adjacent areas during the Last Glacial Maximum (LGM) period, which corresponds to higher genetic diversity for populations in this region. Landscape genetic analysis showed that the Nanling Mountains served as a corridor for organism dispersal at the glacial and interglacial periods within the Quaternary. Based on these results, we propose that establishing nature reserves to protect the ecological corridor across the Nanling Mountains is necessary for the conservation of regional species genetic diversity, as well as the ecosystem of evergreen broadleaved forests in southern China. The study combines species distribution models and genetic diversity to provide new insight into biodiversity conservation and forest management under future climate change.

scholarly journals Gut virome of mammals and birds reveals high genetic diversity of the family Microviridae

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Hao Wang ◽  
Yu Ling ◽  
Tongling Shan ◽  
Shixing Yang ◽  
Hui Xu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
High Genetic Diversity ◽  
The Family

Genetic diversity and phylogeny of the family Osteoglossidae by the nuclear 18S ribosomal RNA and implications for its conservation

2013 ◽  
Vol 51 ◽  
pp. 280-287 ◽  
Author(s):  
Xi-dong Mu ◽  
Dang-en Gu ◽  
Ye-xin Yang ◽  
Du Luo ◽  
Xu Meng ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ribosomal Rna ◽  
18S Ribosomal Rna ◽  
The Family

scholarly journals Characterization of a Novel Member of the Family Closteroviridae from Mentha spp.

2005 ◽  
Vol 95 (9) ◽  
pp. 1043-1048 ◽  
Author(s):  
Ioannis E. Tzanetakis ◽  
Joseph D. Postman ◽  
Robert R. Martin
Keyword(s):  
Genetic Diversity ◽  
Virus Genome ◽  
Double Stranded Rna ◽  
Atypical Symptoms ◽  
Molecular Tests ◽  
The Family ◽  
Nursery Plant ◽  
Transmission Studies ◽  
Genomic Regions

While characterizing the agents involved in symptomatology of a variegated mint, Mentha × gracilis ‘Variegata’, a nursery plant with atypical symptoms was examined. This plant, unlike ‘Variegata’, did not exhibit yellow vein banding symptoms but instead had distorted and crinkled leaves. Molecular tests for the three viruses found in ‘Variegata’ clones failed to detect any of these viruses in the plant. Double-stranded RNA was extracted and cloned, disclosing the presence of two unknown viruses. One of the viruses was a novel member of the family Closteroviridae. The complete nucleotide sequence of the virus, designated as Mint virus 1, has been obtained. A detection test was developed, and revealed the presence of the virus in several other mint clones and species. Genomic regions from three additional isolates were examined to investigate the genetic diversity of the virus. Genome and phylogenetic analysis placed Mint virus 1 in the genus Closterovirus and transmission studies have identified the mint aphid, Ovatus crataegarius, as a vector for this new member of the genus Closterovirus.

scholarly journals Genetic Diversity ofSCN5AGene and Its Possible Association with the Concealed Form of Brugada Syndrome Development in Polish Group of Patients

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Beata Uziębło-Życzkowska ◽  
Grzegorz Gielerak ◽  
Paweł Siedlecki ◽  
Beata Pająk
Keyword(s):  
Genetic Diversity ◽  
Brugada Syndrome ◽  
Genetic Variants ◽  
Protein Sequence ◽  
Cardiac Death ◽  
Challenge Test ◽  
Test Results ◽  
Single Nucleotide ◽  
The Family ◽  
High Incidence

Brugada Syndrome (BS) is an inherited channelopathy associated with a high incidence of sudden cardiac death. The paper presents the discovery of new genetic variants ofSCN5Agene which might be associated with the development of a concealed form of Brugada Syndrome. The study involved a group of 59 patients (37 men) with suspected concealed form of Brugada Syndrome. Pharmacological provocation with intravenous ajmaline administration was performed. Six patients with positive test results were subjected to molecular analysis ofSCN5Agene with MSSCP method. Additionally, MSSCP genotyping was performed for samples obtained from the family members with Brugada Syndrome, despite the fact that they had negative ajmaline challenge test results. Genetic examinations of theSCN5Agene at 6 positive patients showed 6 known polymorphisms, 8 new single nucleotide point (SNP) variants located at exons, and 12 new single nucleotide point variants located at introns. Among new SNPs localized inSCN5Agene exons three SNPs affected the protein sequence.

scholarly journals Distribution and genetic diversity of two earthworms, Helodrilus oculatus and Satchellius mammalis (Clitellata: Lumbricidae) in Scandinavia

2021 ◽  
Vol 41 ◽  
pp. 1-14
Author(s):  
Svante Martinsson ◽  
Mårten Klinth ◽  
Christer Erséus
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Type Species ◽  
The Other ◽  
Nuclear Genes ◽  
East Division ◽  
Earthworm Species ◽  
Haplotype Networks ◽  
The Family ◽  
Different Origin

We report on the Scandinavian distribution of two earthworm species, Helodrilus oculatus and Satchellius mammalis. Both appear relatively new to the Scandinavian Peninsula, as they were not included in the monographic revisions of the earthworm fauna of Sweden and Norway in the mid-1900s. We provide recent records of both species from Norway and Sweden, H. oculatus also from Denmark, and haplotype networks of four markers (COI, 16S, H3, and ITS2) are used to visualise the genetic diversity within each species. There is moderate genetic variation in COI for both taxa, and for H. oculatus, there is a West-East division between the specimens from Norway, Gothenburg (western Sweden) and Bavaria (Germany), and the ones from eastern Sweden and the Bornholm island (easternmost Denmark). This could potentially be explained by different origin and colonisation routes. In the other markers the variation is limited, and in the nuclear genes no pattern to support this split is seen. We also analyse the phylogenetic positions of H. oculatus and S. mammalis in the family Lumbricidae by combining our data (including also some12S, 18S and 28S sequences) with a published dataset. We conclude that neither Helodrilus nor Satchellius are monophyletic. Helodrilus oculatus (type species of Helodrilus), however, forms a clade with some of its current congeners.

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