خيارات البحث
النتائج 1 - 10 من 66
Changes in pigment concentration and composition in Norway spruce induced by long-term exposure to low levels of ozone.
1995
Mikkelsen T.N. | Dodell B. | Lutz C.
Effects of polyethylene terephthalate (PET) microplastics and acid rain on physiology and growth of Lepidium sativum
2021
Pignattelli, Sara | Broccoli, Andrea | Piccardo, Manuela | Terlizzi, Antonio | Renzi, Monia
This study evaluated the chronic toxicity (30 days) of different sizes of polyethylene terephthalate (PET) microplastics (60–3000 μm) provided alone or in combination with acid rain, on garden cress (Lepidium sativum). Both biometrical and physiological traits have been evaluated: i) percentage inhibition of seed germination, plant height, leaf number and fresh biomass production; ii) oxidative stress responses (hydrogen peroxide; ascorbic acid and glutathione production); iii) impairment in photosynthetic machinery in term of pigments production; iv) aminolevulinic acid and proline production. Results highlighted that different sizes of PET, alone or in combination with acid rain, are able to negatively affect both biometrical and physiological plant traits. In particular, the lower size of microplastics is able to negatively affect growth and development, as well as to trigger the oxidative burst. Regarding the pigments production, PET coupled with acid rain, induced a higher production of Chl-b, and an inhibition of aminolevulinic acid.
اظهر المزيد [+] اقل [-]The effects of 2,4-D herbicide and organophosphorus insecticides on growth, photosynthesis, and chlorophyll a synthesis of Chlamydomonas reinhardtii (mt +)
1988
Wong, P.K. | Chang, L. (Department of Biology, The Chinese University of Hong Kong, Shatin, NT (Hong Kong))
The effects of sodium erythorbate and ethylenediurea on photosynthetic function of ozone-exposed loblolly pine seedlings
1999
Kuehler, E.A. | Flagler, R.B. (Department of Forest Science, Texas Agriculture and Mechanical University, College Station, TX 77843 (USA))
Growth, photosynthesis and UV-B absorbing compounds of Portuguese Barbela wheat exposed to ultraviolet-B radiation
1999
Correia, C.M. | Torres-Pereira, M.S. | Torres-Pereira, J.M.G. (Department of Biological and Environmental Engineering, University of Tras-os-Montes and Alto Douro, Apartado 202, 5000 Vila Real (Portugal))
Nitrogen in Dutch freshwater lakes: trends and targets
1998
Molen, D.T. van der | Portielje, R. | Nobel, W.T. de | Boers, P.C.M. (Institute for Inland Water Management and Waste Water Treatment, Lelystad (Netherlands))
Effects of the triazine herbicide, simetryn, on freshwater plankton communities in experimental ponds
1995
Kasai, F. | Hanazato, T. (Regional Environment Division, National Institute for Environmental Studies, Tsukuba, Ibaraki 305 (Japan))
The effect of paper industry effluent on growth, pigments, carbohydrates and proteins of rice seedlings
1991
Misra, R.N. | Behera, P.K. (Department of Botany, Government Science College, Chatrapur 761020, Orissa (India))
Effects of elevated O3 and CO2 on chlorophyll fluorescence and gas exchange in Scots pine during the third growing season
1997
Kellomaki, S. | Wang KaiYun (University of Joensuu, Faculty of Forestry, P.O. Box 111, FIN-80101 Joensuu (Finland))
Differences in responses to urban air pollutants by Ligustrum lucidum Ait. and Ligustrum lucidum Ait. f. tricolor (Rehd.) Rehd
1996
Carreras, H.A. | Canas, M.S. | Pignata, M.L. (Catedra de Quimica General, Facultad de Ciencias Exactas, Fisicas y Naturales, Universidad Nacional de Cordoba, Avda Velez Sarsfield 299, 5000 Cordoba (Argentina))
