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Photosynthetic Characterization of Flavodoxin-expressing Tobacco Plants Reveals a High Light Acclimation-like Phenotype by Rodrigo Gómez; Nicolás Figueroa; Michael Melzer; Mohammad-Reza Hajirezaei; Néstor Carrillo; Anabella F. Lodeyro is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.
What is Photosynthetic Characterization of Flavodoxin-expressing Tobacco Plants Reveals a High Light Acclimation-like Phenotype about?
Flavodoxins are electron carrier flavoproteins present in bacteria and photosynthetic microorganisms which duplicate the functional properties of iron-sulphur containing ferredoxins and replace them under adverse environmental situations that lead to ferredoxin decline. When expressed in plant chloroplasts, flavodoxin complemented ferredoxin deficiency and improved tolerance to multiple sources of biotic, abiotic and xenobiotic stress. Analysis of flavodoxin-expressing plants grown under normal conditions, in which the two carriers are present, revealed phenotypic effects unrelated to ferredoxin replacement. Flavodoxin thus provided a tool to alter the chloroplast redox poise in a customized way and to investigate its consequences on plant physiology and development. We describe herein the effects exerted by the flavoprotein on the function of the photosynthetic machinery. Pigment analysis revealed significant increases in chlorophyll a, carotenoids and chlorophyll a/b ratio in flavodoxin-expressing tobacco lines. Results suggest smaller antenna size in these plants, supported by lower relative contents of light-harvesting complex proteins. Chlorophyll a fluorescence and P700 spect
Who reads Photosynthetic Characterization of Flavodoxin-expressing Tobacco Plants Reveals a High Light Acclimation-like Phenotype?
It is typically read by researchers, students, and practitioners in Biochemistry, Genetics and Molecular Biology.
- Author
- Rodrigo Gómez; Nicolás Figueroa; Michael Melzer; Mohammad-Reza Hajirezaei; Néstor Carrillo; Anabella F. Lodeyro
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0005-2728)
- Published
- 2020
- Language
- EN
- Field
- Biochemistry, Genetics and Molecular Biology (Life Sciences)