Abstract
After initial inoculation, most viruses spread in host plants via two mechanisms: local, cell-to-cell movement and systemic movement. Cell-to-cell movement occurs through intercellular connections, plasmodesmata (PD), between epidermal (EP) cells and mesophyll (MS) cells, or MS cells and MS cells. Systemic movement is more complex, comprising three distinct stages: viral entry into vascular system from MS cells in the inoculated leaf, long distance transport through the vasculature, and viral egress from the vascular tissues into MS cells within uninoculated, systemic organs. Generally, local movement is a relatively slow process (e.g., 5-15 μm/hr, see Gibbs, 1976), which, in some hosts, may be further restricted by limitations in the viral replication rate. On the other hand, long distance movement through the vascular system is rather rapid (e.g., 50-80 mm/hr, see Gibbs, 1976), occurring with the flow of photoassimilates and, in many if not all cases, not requiring viral replication (Wintermantel et al. 1997; Susi et al. 1999). Studies to date show that these two processes are mediated by different sets of viral proteins, implying that cellular machineries, especially those for the PD transport that viruses utilize in their two modes of movement are quite different from each other.
| Original language | English |
|---|---|
| Title of host publication | Natural Resistance Mechanisms of Plants to Viruses |
| Publisher | Springer Netherlands |
| Pages | 289-314 |
| Number of pages | 26 |
| ISBN (Print) | 9781402037801, 1402037791, 9781402037795 |
| DOIs | |
| Publication status | Published - 2006 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
Cite this
Arrest in viral transport as the basis for plant resistance to infection. / Ueki, Shoko; Citovsky, Vitaly.
Natural Resistance Mechanisms of Plants to Viruses. Springer Netherlands, 2006. p. 289-314.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Arrest in viral transport as the basis for plant resistance to infection
AU - Ueki, Shoko
AU - Citovsky, Vitaly
PY - 2006
Y1 - 2006
N2 - After initial inoculation, most viruses spread in host plants via two mechanisms: local, cell-to-cell movement and systemic movement. Cell-to-cell movement occurs through intercellular connections, plasmodesmata (PD), between epidermal (EP) cells and mesophyll (MS) cells, or MS cells and MS cells. Systemic movement is more complex, comprising three distinct stages: viral entry into vascular system from MS cells in the inoculated leaf, long distance transport through the vasculature, and viral egress from the vascular tissues into MS cells within uninoculated, systemic organs. Generally, local movement is a relatively slow process (e.g., 5-15 μm/hr, see Gibbs, 1976), which, in some hosts, may be further restricted by limitations in the viral replication rate. On the other hand, long distance movement through the vascular system is rather rapid (e.g., 50-80 mm/hr, see Gibbs, 1976), occurring with the flow of photoassimilates and, in many if not all cases, not requiring viral replication (Wintermantel et al. 1997; Susi et al. 1999). Studies to date show that these two processes are mediated by different sets of viral proteins, implying that cellular machineries, especially those for the PD transport that viruses utilize in their two modes of movement are quite different from each other.
AB - After initial inoculation, most viruses spread in host plants via two mechanisms: local, cell-to-cell movement and systemic movement. Cell-to-cell movement occurs through intercellular connections, plasmodesmata (PD), between epidermal (EP) cells and mesophyll (MS) cells, or MS cells and MS cells. Systemic movement is more complex, comprising three distinct stages: viral entry into vascular system from MS cells in the inoculated leaf, long distance transport through the vasculature, and viral egress from the vascular tissues into MS cells within uninoculated, systemic organs. Generally, local movement is a relatively slow process (e.g., 5-15 μm/hr, see Gibbs, 1976), which, in some hosts, may be further restricted by limitations in the viral replication rate. On the other hand, long distance movement through the vascular system is rather rapid (e.g., 50-80 mm/hr, see Gibbs, 1976), occurring with the flow of photoassimilates and, in many if not all cases, not requiring viral replication (Wintermantel et al. 1997; Susi et al. 1999). Studies to date show that these two processes are mediated by different sets of viral proteins, implying that cellular machineries, especially those for the PD transport that viruses utilize in their two modes of movement are quite different from each other.
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UR - http://www.scopus.com/inward/citedby.url?scp=35948987507&partnerID=8YFLogxK
U2 - 10.1007/1-4020-3780-5_13
DO - 10.1007/1-4020-3780-5_13
M3 - Chapter
SN - 9781402037801
SN - 1402037791
SN - 9781402037795
SP - 289
EP - 314
BT - Natural Resistance Mechanisms of Plants to Viruses
PB - Springer Netherlands
ER -