Effect of an Alternate Weed Host, Hairy Nightshade, Solanum sarrachoides, on the Biology of the Two Most Important Potato Leafroll Virus (Luteoviridae: Polerovirus) Vectors, Myzus persicae and Macrosiphum euphorbiae (Aphididae: Homoptera)

2008 ◽  
Vol 37 (2) ◽  
pp. 592-600 ◽  
Author(s):  
Rajagopalbabu Srinivasan ◽  
Juan M. Alvarez ◽  
Nilsa A. Bosque-Pérez ◽  
Sanford D. Eigenbrode ◽  
Richard G. Novy
Author(s):  
R.A. Bagrov ◽  
◽  
V.I. Leunov

The mechanisms of transmission of potato viruses from plants to aphid vectors and from aphids to uninfected plants are described, including the example of the green peach aphid (Myzus persicae, GPA). Factors affecting the spreading of tuber necrosis and its manifestation on plants infected with potato leafroll virus (PLRV) are discussed. Recommendations for PLRV and GPA control in the field are given.


2008 ◽  
Vol 98 (9) ◽  
pp. 985-991 ◽  
Author(s):  
R. Srinivasan ◽  
J. M. Alvarez

Hairy nightshade, Solanum sarrachoides, is a solanaceous weed found abundantly in Pacific Northwest potato ecosystems. It serves as a reservoir for one of the important potato viruses, Potato leafroll virus (PLRV) (Luteoviridae: Polerovirus), and its most important vector, the green peach aphid, Myzus persicae (Homoptera: Aphididae). Laboratory research indicated an increased green peach aphid settling and performance on S. sarrachoides than on potato. It also revealed that green peach aphids transmitted PLRV more efficiently from S. sarrachoides to potato than from potato to potato. To test the efficiency of S. sarrachoides as an inoculum source in the field, a two season (2004 and 2005) trial was conducted at Kimberly, Idaho. Two inoculum sources, PLRV-infected potato and PLRV-infected S. sarrachoides, were compared in this trial. Green peach aphid density and temporal and spatial PLRV spread were monitored at weekly intervals. Higher densities of green peach aphids were observed on plots with S. sarrachoides and inoculum sources (PLRV-infected S. sarrachoides and potato) than on plots without S. sarrachoides and inoculum sources. PLRV infection in plots with PLRV-infected S. sarrachoides was similar to or slightly higher than in plots with PLRV-infected potato as an inoculum source. Temporal and spatial PLRV spread was similar in plots with either inoculum source. Thus, S. sarrachoides is as efficient as or a better PLRV inoculum source than potato.


2007 ◽  
Vol 125 (2) ◽  
pp. 135-144 ◽  
Author(s):  
A. E. Alvarez ◽  
E. Garzo ◽  
M. Verbeek ◽  
B. Vosman ◽  
M. Dicke ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document