Effect of fucoidan from the brown alga Fucus evanescens on the development of infection induced by potato virus X in Datura stramonium L. leaves

2009 ◽  
Vol 116 (2) ◽  
pp. 49-54 ◽  
Author(s):  
A. Reunov ◽  
L. Lapshina ◽  
V. Nagorskaya ◽  
T. Zvyagintseva ◽  
N. Shevchenko
1936 ◽  
Vol 14c (11) ◽  
pp. 412-414 ◽  
Author(s):  
W. Newton ◽  
H. I. Edwards

Chicken antiserum was produced by three wing vein inoculations with sap from Datura meteloides and Datura Stramonium plants infected with "potato virus X". Before injection, the saps were purified by the Bawden and Pirie method. This antiserum formed a conspicuous precipitate when incubated for three hours at 37 °C. with similarly purified sap of these two plant species when they were infected with the X or healthy potato virus, but failed to form any precipitate when incubated in the same way with purified sap from virus-free plants. Two unknown viruses, one from spinach and the other from tomato were established as belonging to the X group by the precipitin reaction through the use of chicken antisera. The serological grouping was supported by the fact that the unknowns had similar, if not identical lethal temperatures, longevities in vitro, and host ranges as the ordinary potato virus X.


1997 ◽  
Vol 13 (1) ◽  
pp. 55-59
Author(s):  
L. A. Maximenko ◽  
L. F. Didenko ◽  
N. I. Parkhomenko

2010 ◽  
Vol 37 (6) ◽  
pp. 653-658 ◽  
Author(s):  
V. P. Nagorskaya ◽  
A. V. Reunov ◽  
L. A. Lapshina ◽  
I. M. Ermak ◽  
A. O. Barabanova

1951 ◽  
Vol 4 (3) ◽  
pp. 223 ◽  
Author(s):  
EM Hutton ◽  
JW Peak

One virulent and three avirulent potato virus X strains were characterized qualitatively and quantitatively by the reactions of Gomphrena globosa and Capsicum frutescens. Spontaneous virulent mutants arose from time to time in the avirulent strains cultured in Datura stramonium. Avirulent strains developing low virus concentrations in their host plant had higher mutation rates than one developing a higher concentration in the host.


Virology ◽  
1969 ◽  
Vol 38 (2) ◽  
pp. 220-229 ◽  
Author(s):  
Fyodor E. Kozar ◽  
Yury M. Sheludko

2013 ◽  
Vol 2 (2) ◽  
pp. 92-96
Author(s):  
Qudsia Nosheen ◽  
Shahid Hameed ◽  
Sardar M. Mughal ◽  
Muhammad F. Abbas

Potato virus X (PVX) is among top ten most economically damaging plant viruses in the world and its increasing incidence is getting an alarming situation in potato crop of Pakistan. During two consecutive years (2010-11 and 2011-12), the incidence of PVX was recorded in potato fields at Rawalpindi, Islamabad, Faisalabad and Sahiwal. The samples were collected and subjected to Double Antibody Sandwiched (DAS) Enzyme Linked Immunosorbant Assay (ELISA) and average incidence of PVX was determined about 16.86% (OD405nm 1.38) during 2010-11 and 27.10% (OD405nm 0.479) in 2011-12. The infectivity of the virus was assayed through mechanical inoculation on Nicotiana tabacum cv. Samsun, N. rustica, Datura stramonium, Chenopodium sp. Gomphrena and Capsicum annuum producing local lesion, mosaic and mottling symptoms. Coat protein (CP) gene specific sense and antisense primer successfully amplified a 750bp fragments through Polymerase Chain Reaction (PCR) assay.


2008 ◽  
Vol 34 (1) ◽  
pp. 65-67 ◽  
Author(s):  
Lígia Maria Lembo Duarte ◽  
Maria Luiza Faria Salatino ◽  
Antonio Salatino ◽  
Giuseppina Negri ◽  
Maria Mércia Barradas

The present paper reports results of the effect of Potato virus X (PVX) on the contents of total phenols and alkaloids in leaves of Datura stramonium. A significant decrease in the contents of phenols and alkaloids was observed in leaves inoculated with PVX (X-I). However, there was an increase in the percentage of phenols in leaves rubbed with phosphate buffer (C1-I) and in leaves from the nodes immediately above, possibly induced by mechanical injury. Gas chromatography/mass spectroscopy revealed amounts of scopolamine in samples submitted to all treatments, except X-I, in which the amount of this alkaloid was low. High amounts of an unidentified compound (molecular ion m/z 302 and a prominent peak at m/z 129) were noted in extracts from leaves X-I, C1-I and leaves from the nodes immediately above the leaves inoculated with PVX. It is suggested that the synthesis and accumulation of the unidentified compound is a result of stress from mechanical injury and virus inoculation.


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