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Chlorophyll a fluorescence imaging of ozone-stressed Brassica napus L. plants differing in glucosinolate concentrations

Lookup NU author(s): David D'Haese

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Abstract

Brassicaceae are characterised by glucosinolates (GS), which appear to be involved not only in biotic but also in abiotic stress responses of plants. We investigated the effect of O3 stress on leaf GS concentrations in two lines of Brassica napus L., differing in GS content. Ozone fumigation decreased GS concentrations in leaves of B. napus of one line. In control conditions, chlorophyll content, rates of saturating photosynthesis, and quantum yield of photosystem 2 differed between the two Brassica lines, but differences were smaller in O3-stress conditions, suggesting that the relationship between leaf GS concentration and sensitivity to abiotic stress merits further research. In agreement with other ecophysiological measurements, chlorophyll fluorescence imaging clearly distinguished both lines and in some cases also treatments. A method for analysis of fluorescence images accounting for the two-dimensional leaf heterogeneity is presented. © Georg Thieme Verlag KG Stuttgart.

Publication metadata

Author(s): Gielen B, Vandermeiren K, Horemans N, D'Haese D, Serneels R, Valcke R

Publication type: Article

Publication status: Published

Journal: Plant Biology

Year: 2006

Volume: 8

Issue: 5

Pages: 698-705

ISSN (print): 1435-8603

ISSN (electronic): 1438-8677

Publisher: Wiley-Blackwell

URL: http://dx.doi.org/10.1055/s-2006-924150

DOI: 10.1055/s-2006-924150

PubMed id: 16821192

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