Use of the polymerase chain reaction to clone the potato leafroll virus coat protein gene directly from the total RNA of infected plants

1995 ◽  
Vol 38 (2) ◽  
pp. 211-218 ◽  
Author(s):  
G. Faccioli ◽  
A. Rosner ◽  
M. Forni
1989 ◽  
Vol 17 (4) ◽  
pp. 1768-1768 ◽  
Author(s):  
B. Prill ◽  
E. Maiss ◽  
U. Timpe ◽  
R. Casper

Plant Disease ◽  
1997 ◽  
Vol 81 (9) ◽  
pp. 1066-1069 ◽  
Author(s):  
Prem Mehta ◽  
R. H. Brlansky ◽  
S. Gowda ◽  
R. K. Yokomi

A rapid and simple reverse-transcription polymerase chain reaction (RT-PCR) method was developed for the detection of citrus tristeza virus (CTV) in three aphid species. Seven CTV isolates from a worldwide isolate collection were used for aphid acquisition feeding by three aphid species. These included the most efficient CTV vector, the brown citrus aphid, Toxoptera citricida; the melon aphid, Aphis gossypii; and the green peach aphid, Myzus persicae, a non-vector for CTV. A short procedure for nucleic acid extraction from single or groups of aphids was developed. Nucleic acid extracts from 1, 3, 5, and 10 aphids with acquisition-access periods of 24 and 48 h were reverse transcribed and amplified using primers for the coat protein gene of the Florida B3 (T-36) isolate of CTV. PCR-amplified fragments of approximately 670 bp were obtained from all the isolates tested and the amplified product from the aphids fed on citrus infected with isolate B3 was confirmed as the CTV coat protein gene by digesting with various restriction enzymes. This technique will be useful in investigations of CTV-vector-plant interactions and CTV epidemiology.


2001 ◽  
Vol 1 (2) ◽  
pp. 75-79
Author(s):  
Hasriadi Mat Akin

The use of nonradioactive probe (Digoxigenin-DNA)  for  detection of peanut stripe virus.  The objective of this experiment was to develop the nonradioactive-labeled probe to detect peanut stripe virus (PStV) in peanut leaves and seeds. Digoxigenin labeled cDNA (dig-DNA probe) was synthesized from recombinant plasmid (pHS1.23) using polymerase chain reaction (PCR).  The probe containing 1.195 bp (base pair) corresponding to 3' termini, included part of NIb (nuclear inclusion body) gene, coat protein gene, and 3' untranslated region of PStV genome was used to detect the existence of PStV in peanut leaves and seeds of infected peanut plants.  


2005 ◽  
Vol 52 (3) ◽  
pp. 699-702 ◽  
Author(s):  
Elzbieta Sułuja ◽  
Ludmiła Strokowskaja ◽  
Włodzimierz Zagórski-Ostoja ◽  
Andrzej Pałucha

Potato leafroll virus is a member of the polerovirus genus. The isometric virion is formed by a coat protein encapsidating single-stranded, positive-sense, mono-partite genomic RNA with covalently attached viral protein at the 5' end. The coat protein of the virus exists in two forms: i) a 23 kDa protein, the product of the coat protein gene, and ii) a 78 kDa protein, the product of the coat protein gene and an additional open reading frame expressed by read-through of the coat protein gene stop codon. The aim of this work was the expression of potato leafroll virus coat protein-based proteins that would be able to assemble into virus-like particles in insect cells. These modified particles were tested for their ability to encapsidate nucleic acids. Two types of N-terminally His-tagged coat protein constructs were used for the expression in insect cells: one, encoding a 23 kDa protein with the C-terminal amino-acid sequence corresponding to the wild type coat protein and the second with additional clathrin binding domain at the C-terminus. The expression of these two proteins by a recombinant baculovirus was characterized by Western immunoblotting with antibodies directed against potato leafroll virus. The protection or putative encapsidation of nucleic acids by these two coat protein derivatives was shown by DNase I and RNase A protection assays.


Virus Genes ◽  
1994 ◽  
Vol 9 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Lisset López ◽  
Rita Muller ◽  
Ezequiel Balmori ◽  
Gustavo de la Riva ◽  
Nadia Ramírez ◽  
...  

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