- Tytuł:
- Effects of foliar application of cobalt oxide nanoparticles on growth, photosynthetic pigments, oxidative indicators, non-enzymatic antioxidants and compatible osmolytes in canola (Brassica napus L.)
- Autorzy:
-
Jahani, M.
Khavari-Nejad, R.A.
Mahmoodzadeh, H.
Saadatmand, S. - Powiązania:
- https://bibliotekanauki.pl/articles/2117869.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polska Akademia Nauk. Czasopisma i Monografie PAN
- Tematy:
-
ascorbate and glutathione
carbohydrate
environmental contaminants
glycine betaine
lipoxygenase activity
total flavonoids and flavonols
toxicity and beneficial assessment - Opis:
- Nanotechnology has been widely applied in agriculture, and understanding of the mechanisms of plant interaction with nanoparticles (NPs) as environmental contaminants is important. The aim of this study was to determine the effects of foliar application of cobalt oxide (Co 3O4) NPs on some morpho-physiological and biochemical changes of canola (Brassica napus L.) leaves. Seeds were sown in plastic pots and grown under controlled conditions. Fourteen-day-old seedlings were sprayed with different concentrations of Co3O4 NPs (0, 50, 100, 250, 500, 1000, 2000, and 4000 mg L -1 ) at weekly intervals for 5 weeks. Growth parameters of the shoot (length, fresh and dry weights) were stimulated by low concentrations of Co 3O4 NPs (50 and 100 mg L -1 ) and repressed by higher con- centrations. Similar trends were observed in photosynthetic pigment contents. The results indicated that high concentrations of Co3O4 NPs increased lipoxygenase (LOX) activity and the malondialdehyde (MDA), hydrogen per- oxide (H 2O2), and dehydroascorbate (DHA) contents, but reduced the membrane stability index (MSI), ascorbate (ASC), and glutathione (GSH). Despite the increase of antioxidant capacity (DPPH) and the accumulation of non- enzymatic antioxidants (total flavonoids and flavonols) and osmolytes (proline, glycine betaine (GB) and soluble sugars) at high concentrations of Co 3O4 NPs, the growth and photosynthesis were reduced. The defence system activity did not seem to be sufficient to detoxify reactive oxygen species (ROS). Altogether, high concentrations of Co3O4 NPs showed a phytotoxic potential for canola as an oilseed crop.
- Źródło:
-
Acta Biologica Cracoviensia. Series Botanica; 2019, 61, 1; 29-42
0001-5296 - Pojawia się w:
- Acta Biologica Cracoviensia. Series Botanica
- Dostawca treści:
- Biblioteka Nauki
Artykuł