Activation of Local and Systemic Defence Responses by Flg22 Is Dependent on Daytime and Ethylene in Intact Tomato Plants
| Autor: | Kamirán Áron Hamow, Irma Tari, Gabriella Szalai, András Kukri, Attila Ördög, Péter Poór, Zalán Czékus |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Ethylene night QH301-705.5 salicylic acid 01 natural sciences flagellin Catalysis Article Nitric oxide Inorganic Chemistry 03 medical and health sciences chemistry.chemical_compound Solanum lycopersicum Gene Expression Regulation Plant ethylene Physical and Theoretical Chemistry Biology (General) Hydrogen peroxide Molecular Biology QD1-999 Spectroscopy Plant Diseases Plant Proteins chemistry.chemical_classification reactive oxygen species Reactive oxygen species Superoxide Jasmonic acid Organic Chemistry fungi jasmonic acid Wild type food and beverages General Medicine Ethylenes Computer Science Applications Circadian Rhythm Plant Leaves Horticulture Chemistry 030104 developmental biology chemistry Salicylic acid 010606 plant biology & botany Signal Transduction dark |
| Zdroj: | International Journal of Molecular Sciences, Vol 22, Iss 8354, p 8354 (2021) International Journal of Molecular Sciences Volume 22 Issue 15 |
| ISSN: | 1661-6596 1422-0067 |
| Popis: | The first line of plant defence responses against pathogens can be induced by the bacterial flg22 and can be dependent on various external and internal factors. Here, we firstly studied the effects of daytime and ethylene (ET) using Never ripe (Nr) mutants in the local and systemic defence responses of intact tomato plants after flg22 treatments. Flg22 was applied in the afternoon and at night and rapid reactions were detected. The production of hydrogen peroxide and nitric oxide was induced by flg22 locally, while superoxide was induced systemically, in wild type plants in the light period, but all remained lower at night and in Nr leaves. Flg22 elevated, locally, the ET, jasmonic acid (JA) and salicylic acid (SA) levels in the light period these levels did not change significantly at night. Expression of Pathogenesis-related 1 (PR1), Ethylene response factor 1 (ERF1) and Defensin (DEF) showed also daytime- and ET-dependent changes. Enhanced ERF1 and DEF expression and stomatal closure were also observable in systemic leaves of wild type plants in the light. These data demonstrate that early biotic signalling in flg22-treated leaves and distal ones is an ET-dependent process and it is also determined by the time of day and inhibited in the early night phase. |
| Databáze: | OpenAIRE |
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