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Article

Accumulation of Silicon and Changes in Water Balance under Drought Stress in Brassica napus var. napus L.

The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Kraków, Poland
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Academic Editors: Alexandra S. Dubrovina and Marta Libik-Konieczny
Plants 2021, 10(2), 280; https://doi.org/10.3390/plants10020280
Received: 3 December 2020 / Revised: 11 January 2021 / Accepted: 26 January 2021 / Published: 1 February 2021
(This article belongs to the Special Issue Plant Acclimatization to Abiotic Stress)
The aim of this study was to investigate the accumulation of silicon in oilseed rape and to characterize the changes in chosen water balance parameters in response to drought. The following parameters were estimated: water content, osmotic and water potential, evapotranspiration, stomatal conductance and abscisic acid level under optimal and drought conditions. It was shown that oilseed rape plants accumulate silicon after its supplementation to the soil, both in the case of silicon alone and silicon together with iron. It was revealed that silicon (without iron) helps maintain constant water content under optimal conditions. While no silicon influence on osmotic regulation was observed, a transpiration decrease was detected under optimal conditions after silicon application. Under drought, a reduction in stomatal conductance was observed, but it was similar for all plants. The decrease in leaf water content under drought was accompanied by a significant increase in abscisic acid content in leaves of control plants and those treated with silicon together with iron. To sum up, under certain conditions, silicon is accumulated even in non-accumulator species, such as oilseed rape, and presumably improves water uptake under drought stress. View Full-Text
Keywords: orthosilicic acid; iron; canola; water management; water deficit; stress tolerance orthosilicic acid; iron; canola; water management; water deficit; stress tolerance
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MDPI and ACS Style

Saja-Garbarz, D.; Ostrowska, A.; Kaczanowska, K.; Janowiak, F. Accumulation of Silicon and Changes in Water Balance under Drought Stress in Brassica napus var. napus L. Plants 2021, 10, 280. https://doi.org/10.3390/plants10020280

AMA Style

Saja-Garbarz D, Ostrowska A, Kaczanowska K, Janowiak F. Accumulation of Silicon and Changes in Water Balance under Drought Stress in Brassica napus var. napus L. Plants. 2021; 10(2):280. https://doi.org/10.3390/plants10020280

Chicago/Turabian Style

Saja-Garbarz, Diana, Agnieszka Ostrowska, Katarzyna Kaczanowska, and Franciszek Janowiak. 2021. "Accumulation of Silicon and Changes in Water Balance under Drought Stress in Brassica napus var. napus L." Plants 10, no. 2: 280. https://doi.org/10.3390/plants10020280

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