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High doses of ethylenediurea (EDU) as soil drenches did not increase leaf N content or cause phytotoxicity in willow grown in fertile soil
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Title: | High doses of ethylenediurea (EDU) as soil drenches did not increase leaf N content or cause phytotoxicity in willow grown in fertile soil |
Authors: | Agathokleous, Evgenios Browse this author | Paoletti, Elena Browse this author | Manning, William J. Browse this author | Kitao, Mitsutoshi Browse this author | Saitanis, Costas J. Browse this author | Koike, Takayoshi Browse this author →KAKEN DB |
Keywords: | Air pollution | Antiozonant | Ethylenediurea | Hormesis | Ozone | Soil fertility |
Issue Date: | Jan-2018 |
Publisher: | Elsevier |
Journal Title: | Ecotoxicology and environmental safety |
Volume: | 147 |
Start Page: | 574 |
End Page: | 584 |
Publisher DOI: | 10.1016/j.ecoenv.2017.09.017 |
PMID: | 28923722 |
Abstract: | Ground-level ozone (O₃) levels are nowadays elevated in wide regions of the Earth, causing significant effects on plants that finally lead to suppressed productivity and yield losses. Ethylenediurea (EDU) is a chemical compound which is widely used in research projects as phytoprotectant against O₃ injury. The EDU mode of action remains still unclear, while there are indications that EDU may contribute to plants with nitrogen (N) when the soil is poor in N and the plants have relatively small leaf area. To reveal whether the N content of EDU acts as a fertilizer to plants when the soil is not poor in N and the plants have relatively large total plant leaf area, willow plants (Salix sachalinensis Fr. Schm) were exposed to low ambient O₃ levels and treated ten times (9-day interval) with 200 mL soil drench containing 0, 800 or 1600 mg EDU L⁻¹. Fertilizer was added to a nutrient-poor soil, and the plants had an average plant leaf area of 9.1 m² at the beginning of EDU treatments. Indications for EDU-induced hormesis in maximum electron transport rate (Jmax) and ratio of intercellular to ambient CO₂ concentration (Ci:Cₐ) were observed at the end of the experiment. No other EDU-induced effects on leaf greenness and N content, maximum quantum yield of photosystem II (Fv/Fm), gas exchange, growth and matter production suggest that EDU did not act as N fertilizer and did not cause toxicity under these experimental conditions. |
Rights: | © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/76455 |
Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 小池 孝良
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