scholarly journals Global genetic diversity and geographical distribution of Bemisia tabaci and its bacterial endosymbionts

PLoS ONE ◽  
2019 ◽  
Vol 14 (3) ◽  
pp. e0213946 ◽  
Author(s):  
Surapathrudu Kanakala ◽  
Murad Ghanim
Keyword(s):  
Genetic Diversity ◽  
Geographical Distribution ◽  
Bemisia Tabaci ◽  
Bacterial Endosymbionts

scholarly journals Genetic diversity of Fusarium Isolated from Members of Sternorrhyncha (Hemiptera): Entomopathogens against Bemisia tabaci

2017 ◽  
Vol 49 (2) ◽  
pp. 639-645 ◽  
Author(s):  
Waheed Anwar ◽  
Muhammad S. Haider ◽  
Ahmad A. Shahid ◽  
Hamid Mushtaq ◽  
Usman Hameed ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Bemisia Tabaci

Incidence, geographical distribution and genetic diversity of sugarcane striate virus in Saccharum species in China

Plant Disease ◽  
2021 ◽  
Author(s):  
Yinfu Lin ◽  
Niyaz Ali ◽  
M. R. Hajimorad ◽  
Lijuan Zhang ◽  
Xiaohang Qi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Geographical Distribution ◽  
Phylogenetic Trees ◽  
Full Length ◽  
Leaf Sample ◽  
Local Varieties ◽  
Saccharum Spp ◽  
Saccharum Species ◽  
Germplasm Collections ◽  
Virus Incidence

A novel virus of the genus Mastrevirus, family Geminivirdae, was recently reported in sugarcane germplasm collections in Florida, Guadeloupe and Réunion, and was named sugarcane striate virus (SStrV). Although the full-length sequence of a SStrV isolate from China was obtained in 2015, the incidence, geographical distribution, and genetic diversity of this virus remained unclear. A single leaf sample from 2,368 sugarcane plants from main sugarcane producing regions of China and germplasm collections were tested for SStrV by polymerase chain reaction (PCR). Average virus incidence was 25.1% for field collected samples and SStrV was detected in most Saccharum species and two sugarcane-related species with the highest incidence in S. officinarum (44.1%) followed by Saccharum spp. local varieties (33.3%) grown for chewing cane for a long time. The virus incidence was much lower (6.8%) in modern commercial cultivars (Saccharum spp. hybrids). Phylogenetic trees based on full-length genomes of 157 SStrV isolates revealed that Chinese isolates comprised strains A and B, but not C and D that were reported in Florida, USA. SStrV strain A was the most prominent (98.7%) and widespread strain in China and was further divided into eight sub-groups. Almost half (45.6%) of the SStrV-positive samples from S. officinarum and Saccharum spp. local varieties were co-infected with sugarcane mosaic disease viruses or sugarcane yellow leaf virus. Interestingly, most of the plants infected by strain A of SStrV were asymptomatic. SStrV appears to be widespread in China, and its influence on chewing cane deserves further investigation.

scholarly journals Trypanosoma cruzi Ikiakarora (TcIII) Draft Genome Sequence

2020 ◽  
Vol 9 (27) ◽  
Author(s):  
Inmaculada Gómez ◽  
Alberto Rastrojo ◽  
Fabián Lorenzo-Díaz ◽  
Francisco José Sánchez-Luque ◽  
Francisco Macías ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Variability ◽  
Trypanosoma Cruzi ◽  
Geographical Distribution ◽  
Genome Sequence ◽  
Draft Genome ◽  
Clinical Manifestations ◽  
Sylvatic Cycle ◽  
Content Type ◽  
Discrete Typing Unit

ABSTRACT Trypanosoma cruzi shows a genetic diversity that has been associated with the variability of clinical manifestations, geographical distribution, and preferential parasite-vector interactions. In an effort to better understand this genetic variability, here, the draft genome of T. cruzi strain Ikiakarora (discrete typing unit TcIII), which has been associated with the sylvatic cycle, is reported.

scholarly journals Geographical and Genetic Divergence Among Papaya ringspot virus Populations Within Hainan Province, China

2016 ◽  
Vol 106 (8) ◽  
pp. 937-944 ◽  
Author(s):  
Hui Zhao ◽  
Rui Zong Jia ◽  
Yu-Liang Zhang ◽  
Yun Judy Zhu ◽  
Hui-Cai Zeng ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Geographical Distribution ◽  
Genetic Divergence ◽  
Genetically Modified ◽  
Hainan Island ◽  
Ringspot Virus ◽  
Hainan Province ◽  
Papaya Ringspot Virus ◽  
Frequent Mutations ◽  
Specific Virus

Papaya ringspot virus (PRSV) severely affects the global papaya industry. Transgenic papaya has been proven to have effective resistance to PRSV isolates from Hawaii, Thailand, Taiwan, and other countries. However, those transgenic cultivars failed to show resistance to Hainan Island isolates. Some 76 PRSV samples, representative of all traditional papaya planting areas across five cities (Wen Chang, n = 13; Cheng Mai, n = 14; Chang Jiang, n = 11; Le Dong, n = 25; and San Ya, n = 13) within Hainan Province, were investigated. Results revealed three genetic diversity groups (Hainan I, II, and III) that correlated with geographical distribution. Frequent mutations among PRSV isolates from Hainan were also observed. The high genetic divergence in PRSV isolates from Hainan is likely to be the cause of the failure of genetically modified papaya that targets sequence-specific virus.

Southward invasion ofCraspedacusta sowerbiiacross mesotrophic lakes in Chile: geographical distribution and genetic diversity of the medusa phase

2019 ◽  
Vol 38 (1) ◽  
pp. 193-202 ◽  
Author(s):  
Romina Fuentes ◽  
Leyla Cárdenas ◽  
Ana Abarzua ◽  
Luciano Caputo
Keyword(s):  
Genetic Diversity ◽  
Geographical Distribution

scholarly journals Global Biodiversity Patterns of the Photobionts Associated with the Genus Cladonia (Lecanorales, Ascomycota)

2020 ◽  
Author(s):  
Raquel Pino-Bodas ◽  
Soili Stenroos
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Sexual Reproduction ◽  
Geographical Distribution ◽  
Type I ◽  
Generalist Species ◽  
Climatic Regions ◽  
The World ◽  
Global Biodiversity ◽  
High Diversity

Abstract The diversity of lichen photobionts is not fully known. We studied here the diversity of the photobionts associated with Cladonia, a sub-cosmopolitan genus ecologically important, whose photobionts belong to the green algae genus Asterochloris. The genetic diversity of Asterochloris was screened by using the ITS rDNA and actin type I regions in 223 specimens and 135 species of Cladonia collected all over the world. These data, added to those available in GenBank, were compiled in a dataset of altogether 545 Asterochloris sequences occurring in 172 species of Cladonia. A high diversity of Asterochloris associated with Cladonia was found. The commonest photobiont lineages associated with this genus are A. glomerata, A. italiana, and A. mediterranea. Analyses of partitioned variation were carried out in order to elucidate the relative influence on the photobiont genetic variation of the following factors: mycobiont identity, geographic distribution, climate, and mycobiont phylogeny. The mycobiont identity and climate were found to be the main drivers for the genetic variation of Asterochloris. The geographical distribution of the different Asterochloris lineages was described. Some lineages showed a clear dominance in one or several climatic regions. In addition, the specificity and the selectivity were studied for 18 species of Cladonia. Potentially specialist and generalist species of Cladonia were identified. A correlation was found between the sexual reproduction frequency of the host and the frequency of certain Asterochloris OTUs. Some Asterochloris lineages co-occur with higher frequency than randomly expected in the Cladonia species.

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