Geminiviridae
Viral Sequences in Plant Genomes
Endogenous Viral Sequences in Plant Genomes
from Pierre-Yves Teycheney and Andrew D.W. Geering writing in Recent Advances in Plant Virology
Endogenous viral sequences from members of two virus families, the Caulimoviridae and Geminiviridae, have been discovered in several monocotyledonous and dicotyledonous plant species. For the most part, these sequences are replication-defective but those capable of causing infection have been discovered in tobacco (Nicotiana edwardsonii), petunia (Petunia hybrida) and banana and plantain (Musa spp.). Activation of endogenous caulimovirid sequences is one of the major impediments to international banana and plantain breeding efforts. Research on endogenous viral sequences in plants is still in its infancy, with little known about the contributions of these sequences to host and virus evolution, nor even a classification system adopted. On a practical note, problems still exist with differentially detecting viral genomic DNA in a host genetic background containing endogenous viral sequences, and a solution to the problem of activation of endogenous viral sequences in banana is still far away.
Further reading: Recent Advances in Plant Virology | Virology Publications
from Pierre-Yves Teycheney and Andrew D.W. Geering writing in Recent Advances in Plant Virology
Endogenous viral sequences from members of two virus families, the Caulimoviridae and Geminiviridae, have been discovered in several monocotyledonous and dicotyledonous plant species. For the most part, these sequences are replication-defective but those capable of causing infection have been discovered in tobacco (Nicotiana edwardsonii), petunia (Petunia hybrida) and banana and plantain (Musa spp.). Activation of endogenous caulimovirid sequences is one of the major impediments to international banana and plantain breeding efforts. Research on endogenous viral sequences in plants is still in its infancy, with little known about the contributions of these sequences to host and virus evolution, nor even a classification system adopted. On a practical note, problems still exist with differentially detecting viral genomic DNA in a host genetic background containing endogenous viral sequences, and a solution to the problem of activation of endogenous viral sequences in banana is still far away.
Further reading: Recent Advances in Plant Virology | Virology Publications
Begomovirus
Category: Pathogens | Plant Science
Emergence of Begomovirus Diseases
from Enrique Moriones, Jesus Navas-Castillo and Juan-Antonio Díaz-Pendón writing in Recent Advances in Plant Virology
Begomoviruses (genus Begomovirus, family Geminiviridae) rank among the top of the most important plant viruses causing disease of severe consequences in economically and socially relevant crops. From the early 1990s, a rapid emergence and geographic expansion of begomoviruses has occurred worldwide. As a result, these viruses have become the most destructive group of plant viruses in tropical and subtropical regions of the world. Their emergence is associated with the emergence of populations of the insect vector, the whitefly Bemisia tabaci, probably due to increased plant trading between distantly separated geographical regions and changes in agricultural practices. Human activity seems to have been a major factor promoting emergence of begomoviruses. Other factors also drive emergence.
Further reading: Recent Advances in Plant Virology | Virology Publications
from Enrique Moriones, Jesus Navas-Castillo and Juan-Antonio Díaz-Pendón writing in Recent Advances in Plant Virology
Begomoviruses (genus Begomovirus, family Geminiviridae) rank among the top of the most important plant viruses causing disease of severe consequences in economically and socially relevant crops. From the early 1990s, a rapid emergence and geographic expansion of begomoviruses has occurred worldwide. As a result, these viruses have become the most destructive group of plant viruses in tropical and subtropical regions of the world. Their emergence is associated with the emergence of populations of the insect vector, the whitefly Bemisia tabaci, probably due to increased plant trading between distantly separated geographical regions and changes in agricultural practices. Human activity seems to have been a major factor promoting emergence of begomoviruses. Other factors also drive emergence.
Further reading: Recent Advances in Plant Virology | Virology Publications