Multiple forms of vector manipulation by a plant-infecting virus: Bemisia tabaci and tomato yellow leaf curl virus

An interesting paper about the rerelationship between plant virus and its vectors.


ABSTRACT
For many insect-vectored plant viruses, the relationship between feeding behavior and vector competence may prove integral to understanding the epidemiology of the resulting plant disease.

 While plant-infecting viruses are well known to change host plant physiology in a way that makes them more attractive to vectors, viral manipulation of the vectors themselves has only recently been reported.

 Previous research has suggested that the rapid spread of tomato yellow leaf curl virus (TYLCV) throughout China has been facilitated by its primary vector, the whitefly Bemisia tabaci. 

We conducted two experiments testing the impact of TYLCV infection of the host plant (tomato) and vector (B. tabaci biotypes B and Q) on whitefly feeding behavior. Biotypes B and Q both appeared to find TYLCV-infected plants more attractive, probing them more quickly and having a greater number of feeding bouts; this did not, however, alter the total time spent feeding. Viruliferous whiteflies fed more readily than uninfected whiteflies, and spent more time salivating into sieve tube elements. 

Because vector salivation is essential for viral transmission, this virally-mediated alteration of behavior should provide TYLCV a direct fitness benefit. This is the first report of such manipulation by a nonpropagative virus that belongs to an exclusively plant-infecting family of viruses (Geminiviridae). 

In the context of previous research showing that feeding on TYLCV-infected plants harms biotype B but helps biotype Q, the fact that both biotypes were equally affected by TYLCV also suggests that the virus may alter the B-Q competitive interaction in favor of biotype Q. 



原文：http://jvi.asm.org/content/early/2013/02/06/JVI.03571-12.abstract

Plant virus were detected in animals

Recent studies showed that plant virus-Tobacco mosaic virus-were detected in mice lung. It raised the question about the interaction between plant viruses and human.

Ref:

Balique, Fanny, Philippe Colson, Abdoulaye Oury Barry, Claude Nappez, Audrey Ferretti, Khatoun Al Moussawi, Tatsiana Ngounga, et al. 2013. “Tobacco Mosaic Virus in the Lungs of Mice Following Intra-Tracheal Inoculation.” PLoS ONE 8 (1) (January 30): e54993. doi:10.1371/journal.pone.0054993.

 

Full text available here:

http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054993

FIRST report of GENE FOR GENE CONCEPT

FLOR, HH. 1946. “Genetics of Pathogenicity in Melampsora Lini.” Journal of Agricultural Research 73 (11-12) (December 1): 335.

The first report of PVY and PVX

The first report of PVY and PVX

 

Smith, Kenneth M. 1931. “On the Composite Nature of Certain Potato Virus Diseases of the Mosaic Group as Revealed by the Use of Plant Indicators and Selective Methods of Transmission.” Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character 109 (762) (November 3): 251–267. doi:10.1098/rspb.1931.0080.