Activity of Photosystem II Herbicides Is Related with Their Residence Times at the D 1 Protein

Naber, J.D.; Rensen, J.J.S. van

doi:10.1515/znc-1991-7-812

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…PSII inhibitors restrain photosynthesis through binding to the D1 protein in thylakoids (Naber & van Rensen, 1991). Experiments with isolated chloroplasts demonstrated the direct relationship between the amount of herbicide molecules bound to each chloroplast and the inhibition of photosynthesis (Ketel et al ., 1996).…”

Section: Resultsmentioning

confidence: 99%

Comparison of chlorophyll fluorescence and whole‐plant bioassays of isoproturon

et al. 2002

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The response to aqueous solutions of isoproturon was examined on intact plants of Matricaria perforata, Apera spica-venti and Sinapis alba in greenhouse tests, comparing visual estimates of shoot phytotoxicity at 30 d after application (DAA) with measurements of fast chlorophyll fluorescence induction at 10 DAA on leaves of the same treated plants. The sensitivity was greatest from pre-emergence application to intact plants of M. perforata and A. spica-venti, whereas post-emergence sprays were relatively more active on S. alba. The use of fluorescence induction was investigated further in Petridish experiments on excised M. perforata leaf segments. The Petri-dish bioassay enabled detection of isoproturon at concentrations above 9 · 10 )7 M within 96 h after herbicide exposure. The potential for using chlorophyll fluorescence assays for the determination of isoproturon content in soil extracts is discussed.

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Section: Resultsmentioning

confidence: 99%

Comparison of chlorophyll fluorescence and whole‐plant bioassays of isoproturon

et al. 2002

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“…In most resistant biotypes studied, resistance is associated with the reduced photosynthesis efficiency, making these biotypes less fit. The resistant D1 protein either transfers electrons more slowly to Q B , the subsequent electron acceptor (Naber & van Rensen, 1991) or it is more sensitive to photoinhibition and thus has a greater turnover rate (Niyogi, 1999). Urea herbicides usually retain activity on triazine-resistant biotypes since they bind in a slightly different region of the D1 protein.…”

Section: Resistancementioning

confidence: 99%

“…Since their introduction, herbicides have been valuable tools to investigate plant physiology, metabolism and genetics. For example, much of our knowledge of photosystem II (PSII) is a result of studies on atrazine resistance and the investigation of the specific mechanisms involved (Naber & van Rensen, 1991). Also, detailed knowledge of herbicide enzyme targets such as 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) and acetolactate synthase (ALS) has been obtained through herbicide physiology studies.…”

Section: Introductionmentioning

confidence: 99%

Plant Abiotic Stress

Jenks

Hasegawa

2005

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of CBF gene expression in response to low temperature 4.2.4.1 DNA regulatory elements controlling CBF expression 4.2.4.2 Proteins with positive roles in CBF expression 4.2.4.3 Proteins with negative roles in CBF expression 4.2.4.4 Other potential CBF regulatory proteins 4.2.4.5 Light and circadian rhythms 4.2.4.6 Role of calcium 4.2.4.7 Role of ABA 4.3 Conservation of the CBF cold-response pathway 4.3.1 Brassica napus 4.3.2 Tomato 4.3.3 Rice 4.4 Concluding remarks 5 Plant responses to high temperature JANE LARKINDALE, MICHAEL MISHKIND and ELIZABETH VIERLING 5.1 Introduction 5.2 Physiological responses to high temperature 5.2.1 High temperature limits to optimal plant performance 5.2.2 Heat sensitivity of photosynthesis 5.2.3 Heat sensitivity of reproduction 5.3 Cellular acquired thermotolerance 5.4 Heat shock proteins/molecular chaperones 5.4.1 Hsp100/ClpB 5.4.2 Hsp90 5.4.3 Hsp70/DnaK 5.4.4 Hsp60/GroE 5.4.5 The sHSP family of proteins 5.5 Other components of the response to heat 5.5.1 Antioxidant production 5.5.2 Other heat-stress regulated genes 5.5.3 Other heat-protective responses 5.5.4 Mutants defective in heat tolerance 5.5.5 Transgenic plants with altered heat tolerance CONTENTS vii 5.6 Signaling pathways involved in response to heat 5.6.1 Heat shock transcription factors 5.6.2 Other signaling pathways 5.6.3 Abscisic acid 5.6.4 Salicylic acid

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