scholarly journals Genomic sequence characterization of Begomovirus infecting soybean and molecular evolutionary genomics of Legume yellow mosaic viruses (LYMVs)

Plant Omics ◽  
2017 ◽  
Vol 10 (02) ◽  
pp. 88-96 ◽  
Author(s):  
Shunmugiah V. Ramesh ◽  
◽  
Bhagat S. Chouhan ◽  
Girish K. Gupta ◽  
Syed M. Husain ◽  
...  
2002 ◽  
Vol 92 (1) ◽  
pp. 81-86 ◽  
Author(s):  
J. A. Willment ◽  
D. P. Martin ◽  
E. Van der Walt ◽  
E. P. Rybicki

Maize streak virus (MSV) is best known as the causal agent of maize streak disease. However, only a genetically uniform subset of the viruses within this diverse species is actually capable of producing severe symptoms in maize. Whereas these “maize-type” viruses all share greater than 95% sequence identity, MSV strains isolated from grasses may share as little as 79% sequence identity with the maize-type viruses. Here, we present the complete genome sequences and biological characterization of two MSV isolates from wheat that share ≈89% sequence identity with the maize-type viruses. Clonal populations of these two isolates, named MSV-Tas and MSV-VW, were leafhopper-transmitted to Digitaria sanguinalis and a range of maize, wheat, and barley genotypes. Whereas the two viruses showed some differences in their pathogenicity in maize, they were both equally pathogenic in D. sanguinalis and the various wheat and barley genotypes tested. Phylogenetic analyses involving the genome sequences of MSV-Tas and MSV-VW, a new maize-type virus also fully sequenced in this study (MSV-VM), and all other available African streak virus sequences, indicated that MSV-Tas and MSV-VW are close relatives that together represent a distinct MSV strain. Sequence analyses revealed that MSV-VM has a recombinant genome containing MSV-Tas/VW-like sequences within its movement protein gene.


2010 ◽  
Vol 36 (4) ◽  
pp. 688-694
Author(s):  
Yi-Jun WANG ◽  
Yan-Ping LÜ ◽  
Qin XIE ◽  
De-Xiang DENG ◽  
Yun-Long BIAN

2013 ◽  
Vol 99 (2) ◽  
pp. 379-382 ◽  
Author(s):  
Irshad M. Sulaiman ◽  
Patricia Torres ◽  
Steven Simpson ◽  
Khalil Kerdahi ◽  
Ynes Ortega

DNA Sequence ◽  
1992 ◽  
Vol 2 (5) ◽  
pp. 329-333 ◽  
Author(s):  
Cheryl A. Baxa ◽  
Lillian Chiang ◽  
Martha M. Howe

Genome ◽  
2009 ◽  
Vol 52 (7) ◽  
pp. 647-657 ◽  
Author(s):  
P. J. Maughan ◽  
T. B. Turner ◽  
C. E. Coleman ◽  
D. B. Elzinga ◽  
E. N. Jellen ◽  
...  

Salt tolerance is an agronomically important trait that affects plant species around the globe. The Salt Overly Sensitive 1 (SOS1) gene encodes a plasma membrane Na+/H+ antiporter that plays an important role in germination and growth of plants in saline environments. Quinoa (Chenopodium quinoa Willd.) is a halophytic, allotetraploid grain crop of the family Amaranthaceae with impressive nutritional content and an increasing worldwide market. Many quinoa varieties have considerable salt tolerance, and research suggests quinoa may utilize novel mechanisms to confer salt tolerance. Here we report the cloning and characterization of two homoeologous SOS1 loci (cqSOS1A and cqSOS1B) from C. quinoa, including full-length cDNA sequences, genomic sequences, relative expression levels, fluorescent in situ hybridization (FISH) analysis, and a phylogenetic analysis of SOS1 genes from 13 plant taxa. The cqSOS1A and cqSOS1B genes each span 23 exons spread over 3477 bp and 3486 bp of coding sequence, respectively. These sequences share a high level of similarity with SOS1 homologs of other species and contain two conserved domains, a Nhap cation-antiporter domain and a cyclic-nucleotide binding domain. Genomic sequence analysis of two BAC clones (98 357 bp and 132 770 bp) containing the homoeologous SOS1 genes suggests possible conservation of synteny across the C. quinoa sub-genomes. This report represents the first molecular characterization of salt-tolerance genes in a halophytic species in the Amaranthaceae as well as the first comparative analysis of coding and non-coding DNA sequences of the two homoeologous genomes of C. quinoa.


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