Author:
Agathokleous Evgenios,Kitao Mitsutoshi,Wang Xiaona,Mao Qiaozhi,Harayama Hisanori,Manning William J.,Koike Takayoshi
Abstract
AbstractJapanese larch (Larix kaempferi (Lamb.) Carr.) and its hybrid are economically important coniferous trees widely grown in the Northern Hemisphere. Ground-level ozone (O3) concentrations have increased since the pre-industrial era, and research projects showed that Japanese larch is susceptible to elevated O3 exposures. Therefore, methodologies are needed to (1) protect Japanese larch against O3 damage and (2) conduct biomonitoring of O3 in Japanese larch forests and, thus, monitor O3 risks to Japanese larch. For the first time, this study evaluates whether the synthetic chemical ethylenediurea (EDU) can protect Japanese larch against O3 damage, in two independent experiments. In the first experiment, seedling communities, simulating natural regeneration, were treated with EDU (0, 100, 200, and 400 mg L−1) and exposed to either ambient or elevated O3 in a growing season. In the second experiment, individually-grown saplings were treated with EDU (0, 200 and 400 mg L−1) and exposed to ambient O3 in two growing seasons and to elevated O3 in the succeeding two growing seasons. The two experiments revealed that EDU concentrations of 200–400 mg L−1 could protect Japanese larch seedling communities and individual saplings against O3-induced inhibition of growth and productivity. However, EDU concentrations ≤ 200 mg L−1 did offer only partial protection when seedling communities were coping with higher level of O3-induced stress, and only 400 mg EDU L−1 fully protected communities under higher stress. Therefore, we conclude that among the concentrations tested the concentration offering maximum protection to Japanese larch plants under high competition and O3-induced stress is that of 400 mg EDU L−1. The results of this study can provide a valuable resource of information for applied forestry in an O3-polluted world.
Publisher
Springer Science and Business Media LLC
Reference47 articles.
1. Abaimov AP, Zyryanova OA, Prokushkin SG, Koike T, Matsuura Y (2000) Forest ecosystems of the cryolithic zone of Siberia: regional features, mechanisms of stability and pyrogenic changes. Eurasian J Res 1:1–10
2. Agathokleous E (2017) Perspectives for elucidating the ethylenediurea (EDU) mode of action for protection against O3 phytotoxicity. Ecotoxicol Environ Saf 142:530–537
3. Agathokleous E, Paoletti E, Saitanis CJ, Manning WJ, Sugai T, Koike T (2016a) Impacts of ethylenediurea (EDU) soil drench and foliar spray in Salix sachalinensis protection against O3-induced injury. Sci Total Environ 573:1053–1062
4. Agathokleous E, Saitanis CJ, Stamatelopoulos D, Mouzaki-Paxinou AC, Paoletti E, Manning WJ (2016b) Olive oil for dressing plant leaves so as to avoid O3 injury. Water Air Soil Pollut 227:282
5. Agathokleous E, Vanderstock A, Kita K, Koike T (2017) Stem and crown growth of Japanese larch and its hybrid F1 grown in two soils and exposed to two free-air O3 regimes. Environ Sci Pollut Res 24:6634–6647
Cited by
16 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献