Transmission of Psorosis Virus by Dodder

Transmission of johnsongrass chlorotic stripe mosaic virus by embryo injection

Genetic variation of populations of Citrus psorosis virus.

Citrus psorosis virus (CPsV), the type species of genus Ophiovirus, has a segmented, negative-stranded RNA genome. We examined the population structure and genetic variation of CPsV in three coding regions located in RNAs 1, 2 and 3, analysing 22 isolates from Argentina, California, Florida, Italy and Spain. Most isolates contained a predominant sequence and some minor variants. Estimations of ...

Dynamic Model of Virus Transmission in Plants

In the study of viral diseases in plants, the immune response of the plant plays a basic role. In this paper, a mathematical model based on differential equations system with time delay for the immune response of the plant is introduced. As follows, the dynamical behavior of the model in equilibrium points is investigated. At the end, a plant in two different modes, organic and non- organic is ...

Plant Virus Transmission by Insects

Most plant viruses depend on vectors for their survival and spread. Most vectors are piercing-sucking insects that transmit plant viruses in either the circulative virus (CV) or noncirculative virus (NCV). NCV are carried on the lining cuticle of vectors stylets. CVs cross the vectors’ gut, move internally to the salivary glands (SG), cross the SG membranes to be ejected upon feeding. Transmiss...

VIRUS TRANSMISSION GENETIC ALGORITHM by

by WEIXIN LING (Under the Direction of Walter D. Potter) ABSTRACT In this thesis a new Virus Transmission Genetic Algorithm is presented based on the modern progress of biological evolution. The VTGA simulates the evolution of immune defense and the infection transmission model. Simulating biological infections, this algorithm contains one virus population and one host population as well as sev...