Biofortification with selenium and iodine changes morphological properties of Brassica oleracea L. var. gongylodes) and increases their contents in tubers
| Autor: | Vekoslava Stibilj, Ana Kroflič, Tjaša Novak, Ana Jerše, Nina Kacjan Maršić, Aleksandra Golob, Mateja Germ, Helena Šircelj |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
biology Physiology Cuticle fungi Biofortification food and beverages chemistry.chemical_element Brassica Plant Science Iodides Iodine biology.organism_classification Selenate Horticulture chemistry.chemical_compound chemistry Genetics Brassica oleracea Phloem Selenium Compounds Carotenoid Selenium |
| Zdroj: | Plant Physiology and Biochemistry. 150:234-243 |
| ISSN: | 0981-9428 |
| DOI: | 10.1016/j.plaphy.2020.02.044 |
| Popis: | Kohlrabi (Brassica oleracea L. var. gongylodes L.) was biofortified with selenium (Se), as selenite and selenate, and iodine (I), as iodide and iodate, and their combinations through foliar spraying, to study absorption of these elements by the plants, separately and in combination. The effects on selected physiological and morphological traits and optical characteristics were monitored. Treatments with Se positively affected total chlorophylls and carotenoids, and leaf stomata dimensions. Addition of I decreased total chlorophylls and increased anthocyanins. In reflectance spectra of the leaves, specific colour regions differed significantly due to the different treatments. Reflectance in the UV correlated positively with Se and I contents of the leaves, which indicated lower demand for production of phenolic compounds. Differences in reflectance in UV part of the spectra could be a consequence of changes in the cuticle. The Se and I levels increased markedly in leaves and tubers, without loss of biomass or yield. Se had antagonistic effects on accumulation of I in leaves. The similar levels of Se and I in the leaves and tubers suggest that the transport of both elements in these plants occurs from the leaves to the tubers through the phloem. According to the Se and I contents in the kohlrabi tubers, biofortification with both elements simultaneously is feasible for human nutrition. |
| Databáze: | OpenAIRE |
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