Matches in SemOpenAlex for { <https://semopenalex.org/work/W2085280366> ?p ?o ?g. }
Showing items 1 to 87 of
87
with 100 items per page.
- W2085280366 endingPage "374" @default.
- W2085280366 startingPage "365" @default.
- W2085280366 abstract "Untransformed hybrid poplar (Populus tremula × P. alba) and transgenic lines overexpressing glutathione synthetase (GshS) in the cytosol (200–300-fold) or glutathione reductase (GR) either in the cytosol (5-fold) or in the chloroplast (150–200-fold) were exposed to 0 (control), 100, 200 or 300 nl l−1 ozone for 3 d for 7 h d−1. Following acute ozone stress treatments, wild-type and transgenic poplar suffered from visible foliar injury consisting of dark brown necrotic lesions on the laminae. Necrotic lesions were sharply separated from photosynthetically active cells by a band of red-violet discoloured cell lines showing yellow autofluorescence by blue light, and blue autofluorescence by UV-light excitation. When plants were exposed to 100 nl l−1 ozone, leaf injury was in general negligible, but when 200 and 300 nl l−1 ozone was applied, in both untransformed poplar and transgenic lines overexpressing GshS or GR up to 60% and 80%, respectively, visible injury developed on mature leaves. The mean percentage of injured leaf area amounted to 20–30% (200 nl l−1) and 50–60% (300 nl l−1). Irrespective of transformation, young leaves of poplar trees were only slightly affected by ozone treatments. In support of these observations, net CO2 assimilation rates of mature leaves were decreased by up to 75% (300 nl l−1 ozone) in wild-type and transformed poplar, whereas net photosynthesis of young leaves remained unaffected even under severe stress conditions. Leaf conductance was significantly decreased by all ozone treatments, but was in the same range in young and mature leaves, and in wild-type and transformed poplar, pre- and post-exposure to ozone. It can therefore be assumed that the ozone doses effectively taken up into the leaf tissue were not dependent on leaf development and that the strength of the ozone stress exerted was similar in all types of poplar trees investigated in this study. From these data it is concluded that: (i) elevated foliar activities of glutathione synthetase or glutathione reductase alone are not sufficient to improve tolerance of hybrid poplar to acute ozone stress, and (ii) the sensitivity of poplar leaves to acute ozone stress is controlled by unknown factors closely related to leaf development rather than by foliar activities of glutathione synthetase and glutathione reductase, or leaf conductance." @default.
- W2085280366 created "2016-06-24" @default.
- W2085280366 creator A5014052089 @default.
- W2085280366 creator A5020032075 @default.
- W2085280366 creator A5034022063 @default.
- W2085280366 creator A5054037455 @default.
- W2085280366 creator A5071129596 @default.
- W2085280366 creator A5079322834 @default.
- W2085280366 creator A5082543098 @default.
- W2085280366 date "1999-03-01" @default.
- W2085280366 modified "2023-10-09" @default.
- W2085280366 title "Responses of transgenic poplar (Populus tremula x P. alba) overexpressing glutathione synthetase or glutathione reductase to acute ozone stress: visible injury and leaf gas exchange" @default.
- W2085280366 doi "https://doi.org/10.1093/jxb/50.332.365" @default.
- W2085280366 hasPublicationYear "1999" @default.
- W2085280366 type Work @default.
- W2085280366 sameAs 2085280366 @default.
- W2085280366 citedByCount "38" @default.
- W2085280366 countsByYear W20852803662012 @default.
- W2085280366 countsByYear W20852803662013 @default.
- W2085280366 countsByYear W20852803662014 @default.
- W2085280366 countsByYear W20852803662015 @default.
- W2085280366 countsByYear W20852803662016 @default.
- W2085280366 countsByYear W20852803662018 @default.
- W2085280366 countsByYear W20852803662019 @default.
- W2085280366 countsByYear W20852803662021 @default.
- W2085280366 countsByYear W20852803662022 @default.
- W2085280366 countsByYear W20852803662023 @default.
- W2085280366 crossrefType "journal-article" @default.
- W2085280366 hasAuthorship W2085280366A5014052089 @default.
- W2085280366 hasAuthorship W2085280366A5020032075 @default.
- W2085280366 hasAuthorship W2085280366A5034022063 @default.
- W2085280366 hasAuthorship W2085280366A5054037455 @default.
- W2085280366 hasAuthorship W2085280366A5071129596 @default.
- W2085280366 hasAuthorship W2085280366A5079322834 @default.
- W2085280366 hasAuthorship W2085280366A5082543098 @default.
- W2085280366 hasBestOaLocation W20852803661 @default.
- W2085280366 hasConcept C128758860 @default.
- W2085280366 hasConcept C144027150 @default.
- W2085280366 hasConcept C165069038 @default.
- W2085280366 hasConcept C178790620 @default.
- W2085280366 hasConcept C181199279 @default.
- W2085280366 hasConcept C183688256 @default.
- W2085280366 hasConcept C185592680 @default.
- W2085280366 hasConcept C2777945561 @default.
- W2085280366 hasConcept C2778760513 @default.
- W2085280366 hasConcept C2781045423 @default.
- W2085280366 hasConcept C508106653 @default.
- W2085280366 hasConcept C538909803 @default.
- W2085280366 hasConcept C55493867 @default.
- W2085280366 hasConcept C59822182 @default.
- W2085280366 hasConcept C86803240 @default.
- W2085280366 hasConceptScore W2085280366C128758860 @default.
- W2085280366 hasConceptScore W2085280366C144027150 @default.
- W2085280366 hasConceptScore W2085280366C165069038 @default.
- W2085280366 hasConceptScore W2085280366C178790620 @default.
- W2085280366 hasConceptScore W2085280366C181199279 @default.
- W2085280366 hasConceptScore W2085280366C183688256 @default.
- W2085280366 hasConceptScore W2085280366C185592680 @default.
- W2085280366 hasConceptScore W2085280366C2777945561 @default.
- W2085280366 hasConceptScore W2085280366C2778760513 @default.
- W2085280366 hasConceptScore W2085280366C2781045423 @default.
- W2085280366 hasConceptScore W2085280366C508106653 @default.
- W2085280366 hasConceptScore W2085280366C538909803 @default.
- W2085280366 hasConceptScore W2085280366C55493867 @default.
- W2085280366 hasConceptScore W2085280366C59822182 @default.
- W2085280366 hasConceptScore W2085280366C86803240 @default.
- W2085280366 hasIssue "332" @default.
- W2085280366 hasLocation W20852803661 @default.
- W2085280366 hasOpenAccess W2085280366 @default.
- W2085280366 hasPrimaryLocation W20852803661 @default.
- W2085280366 hasRelatedWork W1981569950 @default.
- W2085280366 hasRelatedWork W1993576837 @default.
- W2085280366 hasRelatedWork W2010389869 @default.
- W2085280366 hasRelatedWork W2069810269 @default.
- W2085280366 hasRelatedWork W2153919273 @default.
- W2085280366 hasRelatedWork W2158519038 @default.
- W2085280366 hasRelatedWork W229107819 @default.
- W2085280366 hasRelatedWork W2625011295 @default.
- W2085280366 hasRelatedWork W2891125155 @default.
- W2085280366 hasRelatedWork W3009225517 @default.
- W2085280366 hasVolume "50" @default.
- W2085280366 isParatext "false" @default.
- W2085280366 isRetracted "false" @default.
- W2085280366 magId "2085280366" @default.
- W2085280366 workType "article" @default.