scholarly journals Phylogenetic and diversity analyses revealed that leek yellow stripe virus population consists of two types: S and N

2021 ◽  
Author(s):  
Adyatma Irawan Santosa ◽  
Filiz Randa Zelyüt ◽  
Filiz Ertunç
Keyword(s):  
Gene Flow ◽  
Phylogenetic Trees ◽  
Serological Test ◽  
Flow Analysis ◽  
Test Results ◽  
Leek Yellow Stripe Virus ◽  
Coding Regions ◽  
Strong Negative Selection ◽  
Other World ◽  
Yellow Stripe

Abstract Leek yellow stripe virus (LYSV, Potyvirus), a pathogen affecting Allium spp. worldwide, has been suspected to consist of two types: S and N, based on genetic and host species differences. In this study, phylogenetic and evolutionary analyses were performed to P1 and CP regions of genome of global LYSV isolates to clarify the variation among members of S-type and N-type. Constructed phylogenetic trees clearly divided isolates into S-type and N-type, with N-type was further split into L and N groups, according to hosts. Significant nucleotide (nt) and amino acids (aa) sequence variation were observed on full ORF, P1, HC-Pro, P3, VPg coding regions. The dN/dS values of P1 and CP confirmed that both genes are under strong negative selection pressure. Neutrality tests on Eastern Asian isolates argued that ancestor of current LYSV isolates may had evolved with garlic while they were in Asia before spread to other world regions through garlic propagative materials. The genetic differentiation and gene flow analysis showed that there was very frequent gene flow from S-type to L and N groups and these phylogroups differentiated from each other over time. Host differences, substantial nt and aa variation, inconsistent serological test results, and phylogenetic and diversity analyses results highly suggested that LYSV can be separated into two types: S and N.

scholarly journals Gene Flow and Diversification in Himalopsyche martynovi Species Complex (Trichoptera: Rhyacophilidae) in the Hengduan Mountains

Biology ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 816
Author(s):  
Xi-Ling Deng ◽  
Adrien Favre ◽  
Emily Moriarty Lemmon ◽  
Alan R. Lemmon ◽  
Steffen U. Pauls
Keyword(s):  
Gene Flow ◽  
Phylogenetic Trees ◽  
Flow Analysis ◽  
Sensu Stricto ◽  
Ecological Group ◽  
Hengduan Mountains ◽  
Origin And Evolution ◽  
Phylogenetic Reconstructions ◽  
Intermediate Morphology

The Hengduan Mountains are one of the most species-rich mountainous areas in the world. The origin and evolution of such a remarkable biodiversity are likely to be associated with geological or climatic dynamics, as well as taxon-specific biotic processes (e.g., hybridization, polyploidization, etc.). Here, we investigate the mechanisms fostering the diversification of the endemic Himalopsyche martynovi complex, a poorly known group of aquatic insects. We used multiple allelic datasets generated from 691 AHE loci to reconstruct species and RaxML phylogenetic trees. We selected the most reliable phylogenetic tree to perform network and gene flow analyses. The phylogenetic reconstructions and network analysis identified three clades, including H. epikur, H. martynovi sensu stricto and H. cf. martynovi. Himalopsyche martynovi sensu stricto and H. cf. martynovi present an intermediate morphology between H. epikur and H. viteceki, the closest known relative to the H. martynovi-complex. The gene flow analysis revealed extensive gene flow among these lineages. Our results suggest that H. viteceki and H. epikur are likely to have contributed to the evolution of H. martynovi sensu stricto and H. cf. martynovi via gene flow, and thus, our study provides insights in the diversification process of a lesser-known ecological group, and hints at the potential role of gene flow in the emergence of biological novelty in the Hengduan Mountains.

scholarly journals Gene Flow and Diversification in Himalopsyche Martynovi Species Complex (Trichoptera: Rhyacophilidae) In the Hengduan Mountains

2021 ◽  
Author(s):  
Xi-Ling Deng ◽  
Adrien Favre ◽  
Emily Moriarty Lemmon ◽  
Alan R. Lemmon ◽  
Steffen U. Pauls
Keyword(s):  
Gene Flow ◽  
Phylogenetic Trees ◽  
Flow Analysis ◽  
Sensu Stricto ◽  
Ecological Group ◽  
Hengduan Mountains ◽  
Origin And Evolution ◽  
Phylogenetic Reconstructions ◽  
Intermediate Morphology

Background: The Hengduan Mountains are one of the most species–rich mountainous areas in the world. The origin and evolution of such a remarkable biodiversity are likely to be associated with geological or climatic dynamics, as well as taxon-specific biotic processes (e.g., hybridization, polyploidization, etc.). Here, we investigate the mechanisms fostering the diversification of the endemic Himalopsyche martynovi complex, a poorly known group of aquatic insects. Methods: We used multiple allelic datasets generated from 691 AHE loci to reconstruct species and RaxML phylogenetic trees. We selected the most reliable phylogenetic tree to perform network and gene flow analyses. Results: Phylogenetic reconstructions and network analysis identified three clades, including H. epikur, H. martynovi sensu stricto and H. cf. martynovi. Himalopsyche martynovi sensu stricto and H. cf. martynovi present an intermediate morphology between H. epikur and H. viteceki, the closest known relative to the H. martynovi–complex. The gene flow analysis revealed extensive gene flow among these lineages. Conclusion: Our results suggest that H. viteceki and H. epikur are likely to have contributed to the evolution of H. martynovi sensu stricto and H. cf. martynovi via gene flow, and thus, our study provides insights in the diversification process of a lesser–known ecological group, and hints at the potential role of gene flow in the emergence of biological novelty in the Hengduan Mountains.

scholarly journals Interpretation of serological test results for Simian herpes B virus

2001 ◽  
Vol 35 (4) ◽  
pp. 315-320 ◽  
Author(s):  
S. E. Wolfensohn ◽  
R. Gopal
Keyword(s):  
Macaca Mulatta ◽  
Macaca Fascicularis ◽  
Screening Programme ◽  
Serological Test ◽  
Test Results ◽  
Specific Pathogen Free ◽  
B Virus ◽  
Specific Pathogen ◽  
Herpes B Virus ◽  
Experimental Group

In 1992 an annual Simian herpes B virus (BV) screening programme for an experimental group of macaque monkeys ( Macaca mulatta and Macaca fascicularis) was initiated with the aim of establishing a specific pathogen free (SPF) colony. In June 1999 one animal was found to be unexpectedly BV positive (non-negative). The investigation of this result highlights some of the issues and difficulties that may be encountered in such a programme.

Reinigung und serologischer Nachweis des Porreegelbstreifen-Virus (leek yellow stripe virus): (Kurze Mittelung)

1987 ◽  
Vol 23 (6) ◽  
pp. 501-504 ◽  
Author(s):  
Klaus Graichen ◽  
Echard Proll ◽  
Johannes Richter ◽  
Hans-ulrich Leistner
Keyword(s):  
Leek Yellow Stripe Virus ◽  
Yellow Stripe

Leek yellow stripe virus. [Distribution map].

2007 ◽  
Author(s):  
Keyword(s):  
Allium Sativum ◽  
Aphis Fabae ◽  
Allium Porrum ◽  
Rio Grande Do Sul ◽  
Distribution Map ◽  
Leek Yellow Stripe Virus ◽  
Yellow Stripe ◽  
Virus Distribution ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Leek yellow stripe virus. Potyviridae: Potyvirus. Hosts: leek (Allium porrum) and garlic (Allium sativum). Information is given on the geographical distribution in Europe (Belgium, Denmark, Finland, France, Germany, Greece, Italy (mainland Italy, Sicily), Netherlands, Slovenia, Sweden), Asia (Bangladesh, China (Henan, Hubei, Jiangsu, Shandong, Yunnan, Zhejiang), Indonesia (Java), Iran, Japan (Honshu), Thailand, Yemen), North America (Mexico, USA (Washington)), South America (Argentina, Brazil (Rio Grande do Sul), Colombia, Uruguay, Venezuela), Oceania (Australia (Victoria), New Zealand). It is transmitted in the non-persistent manner by aphids including Aphis fabae and Myzus persicae (Hemiptera: Aphididae).

scholarly journals Primary splenic hydatidosis: a case report

2019 ◽  
Vol 48 (2) ◽  
pp. 030006051984550
Author(s):  
Qiang Wang ◽  
Ming-quan Pang ◽  
Ying-li Kang ◽  
Zhi-xin Wang ◽  
Dongzhi Cairang ◽  
...  
Keyword(s):  
Case Report ◽  
Laparoscopic Splenectomy ◽  
Serological Test ◽  
Chronic Atrophic Gastritis ◽  
Pathological Examination ◽  
Test Results ◽  
Imaging Findings ◽  
Pastoral Area ◽  
History Of

We herein report a case of primary splenic hydatidosis to provide data regarding the diagnosis, treatment, and epidemiological statistics of this disease. The patient was from a pastoral area and was diagnosed with primary splenic hydatidosis with chronic atrophic gastritis. The patient had no history of surgical treatment of hydatidosis. The diagnosis was mainly based on possible exposure to endemic areas, imaging findings, serological test results, and operative and pathological examination findings. Laparoscopic splenectomy was performed, and regular albendazole therapy was given after the operation. The patient was admitted to the hospital for gastrointestinal bleeding 3 months postoperatively, and she was successfully treated and discharged. No recurrence of hydatid foci has been observed since the follow-up.

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