Subliminal Infection of Cotton by Tobacco Mosaic Virus

Cheo, P. C.

doi:10.1094/phyto-60-41

Cited by 45 publications

(14 citation statements)

References 8 publications

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“…lesions . A similar mechanism may apply in `subliminal' infections of apparently nonhost species (Cheo, 1970 ;Sulzinski & Zaitlin, 1982) . A similar mechanism may apply in `subliminal' infections of apparently nonhost species (Cheo, 1970 ;Sulzinski & Zaitlin, 1982) .…”

Section: Model To Plant Virusmentioning

confidence: 92%

“…Lack of a host function required for cell-to-cell movement of virus could permit virus multiplication in the very small proportion of directly inoculated cells, perhaps analogous to the so-called `subliminal' infections (Cheo, 1970 ;Sulzinski & Zaitlin, 1982) . This type of resistance might be expected to confer complete immunity, if the missing host-specified function 1 7 7 was involved in an early stage of the virus replicative cycle .…”

Section: Some Models For Plant-virus Interactionsmentioning

confidence: 99%

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The genetics of plant-virus interactions: implications for plant breeding

Fraser¹

1992

Euphytica

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Host resistance is the main means of control of plant virus diseases . This paper reviews the genetics of resistance and matching virulence . Theoretical models of basic compatibility between plant species and their viruses, and of resistance, are described and used to predict features of resistance genetics, and mechanisms . These predictions are compared with a survey of known examples of resistance .Resistance is mainly controlled at a single genetic locus, although more complex systems are known . About half of the resistance alleles studied were dominant, the remainder were either incompletely dominant or recessive . Doubt is cast on the reliability of assessing resistance genotypes (numbers of loci and dominance relationships) from `distant' phenotypic measurements such as symptom severity or plant growth . A model is proposed to reconcile apparent inconsistencies between genotype and phenotype .

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Section: Model To Plant Virusmentioning

confidence: 92%

Section: Some Models For Plant-virus Interactionsmentioning

confidence: 99%

The genetics of plant-virus interactions: implications for plant breeding

Fraser¹

1992

Euphytica

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“…both TMV and tobacco etch virus multiply locally in leaves of many plants with out moving systemically (35). Subliminal symptomless infections not detect able as starch lesions, as in TMV infected cotton cotyledons, and where only limited virus synthesis occurs, may also be due to localization of virus (11).…”

Section: Induced Resistance In Viruses-infected Plants '179mentioning

confidence: 99%

Localization and Induced Resistance in Virus-Infected Plants

Loerenstein¹

1972

Annu. Rev. Phytopathol.

131

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“…Indeed, some form of TMV multiplication has been observed in micro-injected chicken embryos (Cochran et al,, 1969) and both TMV and BMV genomic RNAs can replicate in yeast cells (Coutts et al, 1972;Janda and Ahlquist, 1993) suggesting that the requirements for virus multiplication can be rather unspecific. So-called subliminal infection (where virus multiplication in the inoculated leaves is barely discernible because the infection is confined to directly inoculated cells) of nonhost plants has also been demonstrated in a few cases (for TMV in cotton (Cheo, 1970) and TMV in cowpea (Sxilzinski and Zaitlin, 1982)), Furthermore, studies of virus mtitants have shown that viral movement proteins can restrict the virus host range (Ingham and Lazarowitz, 1993;Ingham etal., 1995), Complementation studies have shown that infection with a helper virus can enable another virus, for which the plant is normally a nonhost, to infect and spread within the inoculated leaf (Taliansky et al, 1982;Malyshenko et al, 1989). This has been taken to mean that virus transport is the limiting step for these virus/nonhost combinations (Taliansky et a!,, 1982).…”

Section: Discussionmentioning

confidence: 99%

Two Cases of Non‐host Resistance against Potyviruses Operating at the Single Cell Level

Bak¹,

Poulsen

Albrechtsen³

1998

Journal of Phytopathology

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Nonhost resistance of plants against viruses is a very common but poorly understood phenomenon. In this study Nicotiana tabacum L. and pea seed-borne mosaic potyvirus (PSbMV) were chosen as a model system for a closer examination of nonhost resistance. Nicotiana tahacum was confirmed to be a nonhost for PSbMV by mechanical inoculations followed by analysis by enzymelinked immunosorbent assay and by immunofluorescence staining of mesophyll and epidermal protoplasts isolated from inoculated leaves. When tobacco protoplasts were inoculated with PSbMV virions or genomic RNA, only very few eells became infected. On the other hand, both PSbMV virions and genomic RNA could infeet protoplasts from the host plant Pisum sativum L. In parallel experiments, virions of another potyvirus, potato virus Y (PVY), infected tobacco protoplasts but not protoplasts from pea, a nonhost for PVY. The results suggest, that the inabihty of PSbMV to infect tobacco, and of PVY to infect pea, is at least partly caused by a failure of virus replication in the inoculated cells.

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Subliminal Infection of Cotton by Tobacco Mosaic Virus

Cited by 45 publications

References 8 publications

The genetics of plant-virus interactions: implications for plant breeding

The genetics of plant-virus interactions: implications for plant breeding

Localization and Induced Resistance in Virus-Infected Plants

Two Cases of Non‐host Resistance against Potyviruses Operating at the Single Cell Level

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