Abstract

Viruses are extremely small obligate molecular parasites that can be seen only with an electron microscope. In plant pathology there are the organisms named plant viral vectors whose task is to transmit pathogens. Transmission of vector can be mechanical and insect that present two pathways which allow the spreading of plant virus particles. Plant virologists with other association in molecular biology and plant pathology nominated top 10 viruses based on scientific and economic importance. This paper reviews the current standing of most known antiviral defense mechanism called RNA silencing and most known molecular diagnostic method in plant pathology, polymerase chain reaction (PCR).

Highlights

  • In biology the 1890s is characteristic for the study of viruses with disclosure of an acute infectious agent in tobacco causing leaf spots

  • Plant viruses are grouped into 73 genera and 49 families according to the International Committee on Taxonomy of Viruses (ICTV)

  • It is known fact for viruses that in mature form, virus particle, known as virions are composed of two structures, genome made of nucleic acid, and a protective shell made of protein

Read more

Summary

Introduction

In biology the 1890s is characteristic for the study of viruses with disclosure of an acute infectious agent in tobacco causing leaf spots. It is known fact for viruses that in mature form, virus particle, known as virions are composed of two structures, genome made of nucleic acid, and a protective shell made of protein. Genome of plant viruses are composed mainly of a nucleic acid, either DNA or RNA, normally surrounded by a protein shell (coat) [5].The genome may be a single molecule (monopartite) or may be divided into two or more pieces (bipartite or multipartite) [6]. Two versions of elongated viruses are presented, rigid rods and flexuous filaments In both of these versions, the proteinaceous capsid has helical conformation and the nucleic acid assumes the same conformation, means that it is highly regulated. If the nucleic acid and protein subunits are incubated under proper conditions these two types of virions, helical and icosahedral can self compose in the test tube [10]. These little infectious agents have circular, single-stranded ribonucleic acid (RNA) molecule less than one-tenth the size of the smallest viruses [5]

Plant viral vectors
Most common viruses in invading plants
Plum pox virus
Antiviral mechanism
Molecular diagnostic method for plant viruses
Findings
Conclusion
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call