Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 387424
Title Higher concentration of QB-nonreducing photosystem II centers in triazine-resistant Chenopodium album plants as revealed by analysis of chlorophyll fluorescence kinetics
Author(s) Rensen, J.J.S. van; Vredenberg, W.J.
Source Journal of Plant Physiology 166 (2009). - ISSN 0176-1617 - p. 1616 - 1623.
DOI https://doi.org/10.1016/j.jplph.2009.04.011
Department(s) Laboratory of Plant Physiology
EPS-3
Publication type Refereed Article in a scientific journal
Publication year 2009
Keyword(s) a fluorescence - herbicide resistance - reducing side - induction - chloroplasts - photoinhibition - cyanobacteria - biotypes - atrazine - leaves
Abstract Plants resistant to triazine-type herbicides are known to be altered in their photosystem II reaction center. Serine at site 264 in D1 protein is replaced by glycine. The measurements of chlorophyll a fluorescence excitations with a variable number of saturating flashes in Chenopodium album plants show characteristic differences between the resistant and the wild-type plants. These differences appear in response to the first flash as well as in the rise pattern of subsequent flashes of a 12.5 Hz flash train. The differences indicate a higher concentration of QB-nonreducing reaction centers in the resistant biotype, and confirm earlier results on a slower rate of electron transport between the primary and secondary electron acceptors.
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