+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Endogenous methyl salicylate in pathogen-inoculated tobacco plants

, : Endogenous methyl salicylate in pathogen-inoculated tobacco plants. Plant physiology 116(1): 387-392

The tobacco (Nicotiana tabacum) cultivar Xanthi-nc (genotype NN) produces high levels of salicylic acid (SA) after inoculation with the tobacco mosaic virus (TMV). Gaseous methyl salicylate (MeSA), a major volatile produced in TMV-inoculated tobacco plants, was recently shown to be an airborne defense signal. Using an assay developed to measure the MeSA present in tissue, we have shown that in TMV-inoculated tobacco plants the level of MeSA increases dramatically, paralleling increases in SA. MeSA accumulation was also observed in upper, noninoculated leaves. In TMV-inoculated tobacco shifted from 32 to 24 degrees C, the MeSA concentration increased from nondetectable levels to 2318 ng/g fresh weight 12 h after the temperature shift, but subsequently decreased with the onset of the hypersensitive response. Similar results were observed in plants inoculated with Pseudomonas syringae pathovar phaseolicola, in which MeSA levels were highest just before the hypersensitive response-induced tissue desiccation. Transgenic NahG plants unable to accumulate SA also did not accumulate MeSA after TMV inoculation, and did not show increased resistance to TMV following MeSA treatment. Based on the spatial and temporal kinetics of its accumulation, we conclude that tissue MeSA may play a role similar to that of volatile MeSA in the pathogen-induced defense response.


DOI: 10.1104/pp.116.1.387

Other references

Hotchkin, PG.; Fallon, AM., 1987: Ribosome metabolism during the vitellogenic cycle of the mosquito, Aedes aegypti. Ribosome accumulation and synthesis in the fat body of the mosquito Aedes aegypti increased by approx. 4-fold during 18 h after the blood meal, consistent with the pattern of total RNA accumulation during the synthetic phase of the vitellogenic cy...

Yancey Daniel J.; Imhof Matthias G.; Feddock John E.; Gresham Tod, 2007: Analysis and application of coal-seam seismic waves for detecting abandoned mines. Two in-seam reflection surveys and one transmission survey were acquired at an abandoned underground mine near Hurley, Virginia, to demonstrate the feasibility of detecting abandoned-mine voids utilizing coal-seam seismic waves. Standard, commonly...

Yang, C.C.; Jiang, X., 2009: Clinical autonomic neurophysiology and the male sexual response: an overview. Journal of Sexual Medicine 6 Suppl 3: 221-228

Nury, D.; Chabanon, Hé.; Levadoux-Martin, M.; Hesketh, J., 2004: An eleven nucleotide section of the 3'-untranslated region is required for perinuclear localization of rat metallothionein-1 mRNA. Localization of mRNAs provides a novel mechanism for synthesis of proteins close to their site of function. MT1 (metallothionein-1) is a small, metal-binding protein that is largely cytoplasmic but which can be found in the nucleus. The localizati...

Gilhen, J., 1969: An unusually large, gravid ring-necked snake, Diadophis punctatus edwardsi Merrem with eight eggs from Nova Scotia. Canadian Field Naturalist, 83: 277

Carvalho, J.C. de M.; Rosas, A.F., 1965: Mirdeos neotropicais, XCIII: Sobre um novo genero e duas especies novas de Deraecorinae e Cylapinae (Hemiptera). Anais da Academia Brasileira de Ciencias, 37: 83-85

Talbot, J.; Tarjus, G.; Viot, P., 2000: Adsorption-desorption model and its application to vibrated granular materials. We investigate both analytically and by numerical simulation the kinetics of a microscopic model of hard rods adsorbing on a linear substrate, a model that is relevant for compaction of granular materials. The computer simulations use an event-dri...

de Rochemont, L., 1938: Concerning film narrative, "Men of Medicine: 1938.". California and Western Medicine 49(1): 96-96

Guyer, R.L., 1991: This Week in SCIENCE. Science 251(4992): 355-355

Rossetto, E.A.; Duarte, V., 2001: Epidemiological aspects of citrus variegated chlorosis at Rio Grande do Sul State, Brazil. The objectives of this research were to assess (i) the occurrence of Xylella fastidiosa (Xf) in weed plants, (ii) the presence of sharpshooter leafhopper vectors, and (iii) orchards infected with Citrus Variegated Chlorosis (CVC) at Rio Grande do...