Stimulation of a viroid-like syndrome and the impairment of viroid infection in Gynura aurantiaca plants by treatment with silver ions

Spraying the foliage of Gynura aurantiaca DC plants with a solution of silver nitrate produced morphological changes, including stunting, leaf epinasty and rugosity, similar to those induced in this host by infection with citrus exocortis viroid. The effects ranged from mild to severe depending on t...

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Bibliographic Details
Published inPhysiological and molecular plant pathology Vol. 29; no. 3; pp. 317 - 323
Main Authors Conejero, V., Granell, A.
Format Journal Article
LanguageEnglish
Published London Elsevier India Pvt Ltd 01.11.1986
Elsevier
Subjects
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Pathology. Damages, economic importance
Phytopathology. Animal pests. Plant and forest protection
Plant viruses and viroids
CEV
Cross protection
Ethylene
Ornamental crop
Host agent relation
Biosynthesis
Phytopathogen
Compositae
Infection
Virus
Silver
Chemical treatment
Dicotyledones
Viral disease
Viroid
Citrus exocortis virus
Angiospermae
Spermatophyta
Silver Nitrates
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Summary:Spraying the foliage of Gynura aurantiaca DC plants with a solution of silver nitrate produced morphological changes, including stunting, leaf epinasty and rugosity, similar to those induced in this host by infection with citrus exocortis viroid. The effects ranged from mild to severe depending on the concentration of silver nitrate used over the range 50–1000 mg 1 −1. Silver ions also increased the levels of two polypeptides in the host of the same molecular weight as those induced by viroid infection. At low concentrations (100 mg 1 −1) silver ions impaired the establishment of viroid infection. These effects are discussed in relation to host-specified response mechanisms.
ISSN:0885-5765
1096-1178
DOI:10.1016/S0048-4059(86)80048-0