Effect of tomato yellow leaf curl disease on reproduction of Bemisia tabaci Q biotype (Hemiptera: Aleyrodidae) on tomato plants

Abstract

Nonviruliferous adults of Bemisia tabaci Q biotype were released at different densities onto Tomato yellow leaf curl virus (TYLCV)-infected and healthy tomato plants (Lycopersicon esculentum 'House Momotaro') in the laboratory. The number of progeny was related to the release density of whiteflies but not to the presence of TYLCV infection on tomato plants. Q biotype adults reared on tomato plants that were either healthy or infected with TYLCV were allowed to oviposit on healthy tomato plants in the laboratory. There were no significant differences in survival rate and fecundity between viruliferous and nonviruliferous whiteflies. Q biotype adults were also released on TYLCVinfected and healthy tomato plants grown in glasshouses, and then the number of adults was investigated for two consecutive generations. In both generations there was no significant difference in the whitefly reproductive rate per generation between those released on infected and healthy tomato plants. These results suggest that symptomatic TYLCV infection of susceptible tomato plants has little effect on the reproduction of the virus's vector, the Q biotype of B. tabaci.

Upregulation of temperature susceptibility in Bemisia tabaci upon acquisition of Tomato yellow leaf curl virus (TYLCV)

“…TYLCV infection does affect the development or reproduction of both the invasive Q biotype and indigenous Asian ZHJ2 biotype of B. tabaci (Li et al, 2011b). TYLCV infection was also shown to have a neutral effect on Q biotype (Matsuura and Hoshino, 2009). On the other hand, the nymphal growth rate and fecundity of B biotype B. tabaci were shown to be higher upon feeding on tomato plants infected with tomato mottle virus compared to healthy plants (McKenzie, 2002).…”

“…However, in some cases, vectors undergo negative or neutral modifications upon virus transmission. Specifically, longevity and fecundity of vectors either decrease or remain unchanged upon virus infection (Rubinstein and Czosnek, 1997;Matsuura and Hoshino, 2009). Froissart et al (2010) reviewed the complex interactions among viruses, vectors, and plants in the context of the virulencetransmission trade-off hypothesis for vector-borne plant viruses.…”

Replication of Tomato Yellow Leaf Curl Virus in Its Whitefly Vector, Bemisia tabaci

“…TYLCV and other begomoviruses are present in the insect host for most, if not all, of the whitefly's life span (25). The long-term TYLCV-whitefly interaction has been found to have deleterious (23), beneficial (26), or no (27) effects on the insect's fertility and longevity. TYLCV, Tomato yellow leaf curl China virus (TYLCCNV), and TYLCSV have been shown to be transmitted transovarially to progeny (28,29) and during mating (28,30,31).…”

Differential effects of an exotic plant virus on its two closely related vectors

“…For example, viral infection of a host plant has been shown to exert positive, neutral, or negative effects on the performance of the vector1920. Several studies indicated direct and/or indirect influence of begomoviruses on its vector B. tabaci , and the effects exerted on the whitefly vectors can be detrimental, neutral or beneficial, depending on the virus-whitefly-plant combinations21222324252627. Therefore, knowledge of the variational responses to virus-infection of host plants between B. tabaci B and Q is essential to understanding the epidemics of Begomovirus diseases in regions under invasion.…”