Exploring the effects of red light night break on the defence mechanisms of tomato against fungal pathogen Botrytis cinerea.

Autor: Kukri A; Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary.; Doctoral School of Biology, University of Szeged, Szeged, Hungary., Czékus Z; Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary., Gallé Á; Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary., Nagy G; Department of Biochemistry and Molecular Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary., Zsindely N; Department of Biochemistry and Molecular Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary., Bodai L; Department of Biochemistry and Molecular Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary., Galgóczy L; Department of Biotechnology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary., Hamow KÁ; HUN-REN Centre for Agricultural Research, Martonvásár, Hungary., Szalai G; HUN-REN Centre for Agricultural Research, Martonvásár, Hungary., Ördög A; Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary., Poór P; Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary.
Jazyk: angličtina
Zdroj: Physiologia plantarum [Physiol Plant] 2024 Jul-Aug; Vol. 176 (4), pp. e14504.
DOI: 10.1111/ppl.14504
Abstrakt: Plant infections caused by fungi lead to significant crop losses worldwide every year. This study aims to better understand the plant defence mechanisms regulated by red light, in particular, the effects of red light at night when most phytopathogens are highly infectious. Our results showed that superoxide production significantly increased immediately after red light exposure and, together with hydrogen peroxide levels, was highest at dawn after 30 min of nocturnal red-light treatment. In parallel, red-light-induced expression and increased the activities of several antioxidant enzymes. The nocturnal red light did not affect salicylic acid but increased jasmonic acid levels immediately after illumination, whereas abscisic acid levels increased 3 h after nocturnal red-light exposure at dawn. Based on the RNAseq data, red light immediately increased the transcription of several chloroplastic chlorophyll a-b binding protein and circadian rhythm-related genes, such as Constans 1, CONSTANS interacting protein 1 and zinc finger protein CONSTANS-LIKE 10. In addition, the levels of several transcription factors were also increased after red light exposure, such as the DOF zinc finger protein and a MYB transcription factor involved in the regulation of circadian rhythms and defence responses in tomato. In addition to identifying these key transcription factors in tomato, the application of red light at night for one week not only reactivated key antioxidant enzymes at the gene and enzyme activity level at dawn but also contributed to a more efficient and successful defence against Botrytis cinerea infection.
(© 2024 The Author(s). Physiologia Plantarum published by John Wiley & Sons Ltd on behalf of Scandinavian Plant Physiology Society.)
Databáze: MEDLINE
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