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Journal ArticleDOI

Use of degenerate primers in the polymerase chain reaction to detect whitefly-transmitted geminiviruses

Maria R. Rojas, +2 more
- 01 Jan 1993 - 
- Vol. 77, Iss: 4, pp 340-347
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TLDR
Degenerate PCR primers were designed to anneal to highly conserved nucleotide sequences identified in the genomes of 10 whitefly-transmitted geminiviruses, and tested for their effectiveness in the amplification of viral DNA fragments from the DNA-A and/or DNA-B components of 15 previously uncharacterized geminIViruses.
Abstract
Geminiviruses are widely recognised as a serious threat to vegetable production in many tropical and subtropical regions. This has increased the need for accurate identification of these viruses. Geminiviruses are well suited to polymerase chain reaction (PCR) methods because they replicate via a double-stranded, circular DNA form. Degenerate PCR primers were designed to anneal to highly conserved nucleotide sequences identified in the genomes of 10 whitefly-transmitted geminiviruses. The PCR primers were tested for their effectiveness in the amplification of viral DNA fragments from the DNA-A and/or DNA-B components of 15 previously uncharacterized geminiviruses from the Americas, the Caribbean Basin, and Africa (.)

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Journal ArticleDOI

Exploiting chinks in the plant's armor: evolution and emergence of geminiviruses

TL;DR: The geminiviruses represent a family of DNA viruses that has circumvented these impediments to emerge as one of the most successful viral pathogens, causing severe economic losses to agricultural production worldwide.
Journal ArticleDOI

Evidence that DNA-A of a geminivirus associated with severe cassava mosaic disease in Uganda has arisen by interspecific recombination.

TL;DR: UgV isolates were detected in severely mosaic-affected plants from all 11 widely separated locations sampled, and the probable role of recombination in geminivirus evolution in the short to medium term is discussed.
Journal ArticleDOI

A simple method for cloning the complete begomovirus genome using the bacteriophage φ29 DNA polymerase

TL;DR: The use of this enzyme simplified the cloning steps and increased the cloning efficiency of the complete genome of a circular plant DNA virus.
Journal ArticleDOI

Functional analysis of proteins involved in movement of the monopartite begomovirus, Tomato yellow leaf curl virus.

TL;DR: Investigation of the functional properties of proteins potentially involved with movement of the monopartite begomovirus, Tomato yellow leaf curl virus (TYLCV), established that TYLCV infection was limited to phloem cells of shoot apical, leaf, stem, and floral tissues, and the V1 and/or C4 may be analogs of the bipartite beggingomov virus BC1 that have evolved to mediate TY LCV movement withinPhloem tissue.
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