Transient suppression of a catalase and an alternative oxidase gene during virus-induced local lesion formation (hypersensitive response) is independent of the extent of leaf necrotization
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Tartalom: http://real.mtak.hu/66420/
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published


Type = Article
Cím:
Transient suppression of a catalase and an alternative oxidase gene during virus-induced local lesion formation (hypersensitive response) is independent of the extent of leaf necrotization
Létrehozó:
KĂĽnstler, A.
Hafez, Y. M.
Király, L.
Kiadó:
Akadémiai Kiadó
Dátum:
2007
info:eu-repo/date/embargoEnd/2027-12-31
Téma:
QH540 Ecology / ökológia
QK10 Plant physiology / növényélettan
QL01 Systematic zoology / állatrendszertan
Tartalmi leírás:
In plants, recognition of a pathogen as an invader may result in the formation of hypersensitive response (HR) lesions, i.e. localized programmed cell and tissue death associated with restriction of the pathogen to the infection site. A transient suppression of antioxidants is known to occur during relatively early stages of the HR. Here we show that the transient suppression of a catalase and an alternative oxidase gene during virusinduced local lesion formation (HR) has similar kinetics in different hosts regardless of the extent of leaf necrotization. Both
Nicotiana edwardsonii
var. Columbia and a paraquat tolerant
N. tabacum
biotype display significantly less and smaller necrotic lesions in response to inoculation by two viruses (
Tobacco mosaic virus
and
Tobacco necrosis virus
) in comparison to control plants (
N. edwardsonii
and
N. tabacum
cv. Samsun, respectively). We found that all of these plant hosts display a transient suppression of catalase and alternative oxidase transcript levels starting within six hours after virus inoculation. Our results suggest that the transient decline in antioxidant activity during early stages of an HR does not significantly influence the extent of localized cell death around infection sites.
Nyelv:
magyar
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Künstler, A. and Hafez, Y. M. and Király, L. (2007) Transient suppression of a catalase and an alternative oxidase gene during virus-induced local lesion formation (hypersensitive response) is independent of the extent of leaf necrotization. Acta Phytopathologica et Entomologica Hungarica, 42 (2). pp. 185-196. ISSN 0238-1249
Kapcsolat:
https://doi.org/10.1556/APhyt.42.2007.2.2
Létrehozó:
info:eu-repo/semantics/embargoedAccess