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The Interrelationship of Lower Oxygen Limit, Chlorophyll Fluorescence, and Xanthophyll Cycle in Plants

This article explores the critical interactions between the lower oxygen limit, chlorophyll fluorescence, and the xanthophyll cycle in plants. Through the analysis of these interdependent processes, it identifies how variations in oxygen levels affect photosynthetic efficiency and pigment dynamics. The research sheds light on the role of chlorophyll fluorescence as an indicator of plant stress and health, while also detailing the function of the xanthophyll cycle in photoprotection. This study is essential for understanding plant responses to environmental changes.

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The Interrelationship of Lower Oxygen Limit, Chlorophyll Fluorescence, and Xanthophyll Cycle in Plants

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  1. Online Resource 2 Article title: ‘The interrelationship between the lower oxygen limit, chlorophyll fluorescence and the xanthophyll cycle in plants’ Journal name: Photosynthesis Research Author names: A. Harrison Wright1,2*, John M. DeLong1, Arunika H.L.A.N. Gunawardena2, and Robert K. Prange1 1 Atlantic Food and Horticulture Research Centre, Agriculture and Agri-Food Canada, Kentville, NS, B4N 1J5, Canada. 2 Department of Biology, Dalhousie University, Halifax, NS, B3H 4J1, Canada Corresponding author email (*): harrison.wright@agr.gc.ca

  2. Online Resource 2 – ethanol fermentation abbreviations: ADP, adenosine diphosphate; ATP, adenosine triphosphate; Cyt b6/f , cytochrome b6/f complex; Fd, ferrodoxin; FNR, ferredoxin-NADP+ reductase; NADH, nicotinamide adenine dinucleotide ; NADPH, nicotinamide adenine dinucleotide phosphate; Ndh, NADPH-dehydrognase; OAA, oxaloacetate; PC, plastocyanin; Pi, phosphate; PQ, plastoquinonol; PTOX, chloroplast terminal oxidase; QA, plastoquinone QA; ROS, reactive oxygen species

  3. Online Resource 2– mitochondria / chloroplast interactions abbreviations: ADP, adenosine diphosphate; ATP, adenosine triphosphate; Cyt b6/f , cytochrome b6/f complex; Fd, ferrodoxin; FNR, ferredoxin-NADP+ reductase; NADH, nicotinamide adenine dinucleotide ; NADPH, nicotinamide adenine dinucleotide phosphate; Ndh, NADPH-dehydrognase; OAA, oxaloacetate; PC, plastocyanin; Pi, phosphate; PQ, plastoquinonol; PTOX, chloroplast terminal oxidase; QA, plastoquinone QA; ROS, reactive oxygen species

  4. Online Resource 2 – chlororespiration Reductant Sources abbreviations: ADP, adenosine diphosphate; ATP, adenosine triphosphate; Cyt b6/f , cytochrome b6/f complex; Fd, ferrodoxin; FNR, ferredoxin-NADP+ reductase; NADH, nicotinamide adenine dinucleotide ; NADPH, nicotinamide adenine dinucleotide phosphate; Ndh, NADPH-dehydrognase; OAA, oxaloacetate; PC, plastocyanin; Pi, phosphate; PQ, plastoquinonol; PTOX, chloroplast terminal oxidase; QA, plastoquinone QA; ROS, reactive oxygen species

  5. Online Resource 2 – ‘chlorofermentation’? Reductant Sources abbreviations: ADP, adenosine diphosphate; ATP, adenosine triphosphate; Cyt b6/f , cytochrome b6/f complex; Fd, ferrodoxin; FNR, ferredoxin-NADP+ reductase; NADH, nicotinamide adenine dinucleotide ; NADPH, nicotinamide adenine dinucleotide phosphate; Ndh, NADPH-dehydrognase; OAA, oxaloacetate; PC, plastocyanin; Pi, phosphate; PQ, plastoquinonol; PTOX, chloroplast terminal oxidase; QA, plastoquinone QA; ROS, reactive oxygen species

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