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Possible emergence of new geminiviruses by frequent recombination.
Although exchange of genetic information by recombination plays a role in the evolution of viruses, the extent to which it generates diversity is not clear. We analyzed genomes of geminiviruses forExpand
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A Receptor Kinase-Like Protein Encoded by the Rice Disease Resistance Gene, Xa21
  • Wen-Yuan Song, Guo-Liang Wang, +9 authors P. Ronald
  • Biology, Medicine
  • Science
  • 15 December 1995
The rice Xa21 gene, which confers resistance to Xanthomonas oryzae pv. oryzae race 6, was isolated by positional cloning. Fifty transgenic rice plants carrying the cloned Xa21 gene display highExpand
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Recombination, pseudorecombination and synergism of geminiviruses are determinant keys to the epidemic of severe cassava mosaic disease in Uganda.
The molecular variability of cassava geminiviruses occurring in Uganda was investigated in this study. Infected cassava plants and whiteflies were collected from cassava plantings in differentExpand
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The new plant virus family Flexiviridae and assessment of molecular criteria for species demarcation
The new plant virus family Flexiviridae is described. The family is named because its members have flexuous virions and it includes the existing genera Allexivirus, Capillovirus, Carlavirus,Expand
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Evidence of synergism between African cassava mosaic virus and a new double-recombinant geminivirus infecting cassava in Cameroon.
Stem cuttings were collected in Cameroon from cassava plants displaying cassava mosaic disease (CMD) symptoms. The nature of the viruses present was determined by using the PCR with primers specificExpand
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Differential Roles of AC2 and AC4 of Cassava Geminiviruses in Mediating Synergism and Suppression of Posttranscriptional Gene Silencing
ABSTRACT Posttranscriptional gene silencing (PTGS) in plants is a natural defense mechanism against virus infection. In mixed infections, virus synergism is proposed to result from suppression of theExpand
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Classification and Nomenclature of Viruses
The results of the meetings of the International Committee on Taxonomy of Viruses, held in Madrid, September 1975, are briefly reported: rules of viral nomenclature, composition of the new ExecutiveExpand
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Virology division news: Revision of taxonomic criteria for species demarcation in the family Geminiviridae, and an updated list of begomovirus species
Members of the family Geminiviridae characteristically have circular single-stranded DNAgenomes packaged within twinned (so-called geminate) particles. Geminiviruses are currentlydivided into fourExpand
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Cassava mosaic geminiviruses: actual knowledge and perspectives.
SUMMARY Cassava mosaic disease (CMD) caused by cassava mosaic geminiviruses (CMGs) is one of the most devastating crop diseases and a major constraint for cassava cultivation. CMD has been reportedExpand
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Classification and identification of geminiviruses using sequence comparisons.
The genomes and ORFs of 36 geminiviruses were compared to obtain phylogenetic trees and frequency distributions of all possible pairwise comparisons with an objective to classify geminiviruses. SuchExpand
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