<abstract xmlns="http://www.w3.org/1999/xhtml">Ornamental plants growing in urban areas are often exposed to salt stress that negatively affects their decorative value. Enhancement of their salt resistance to retain a high decorative value despite salt stress has therefore high practical importance. In our study, the exposure of <italic>Plectranthus scutellarioides</italic> (L.) R. Br. to NaCl-induced moderate (40 mM) or severe salt stress (80 mM) resulted in a number of stress responses including reduced growth parameters, decreased concentration of photosynthetic pigments, and an increase in the accumulation of anthocyanins and free proline. These changes were partially compensated for by the application of selenium (5 µM as Na2SeO4) to the growth medium. However, the beneficial effect of selenium on the growth and physiological parameters of <italic>P. scutellarioides</italic> was manifested only at the moderate level of salt stress. Under the severe salt stress, the application of selenium was not able to alleviate the phytotoxic effect of NaCl.</abstract>

Ornamental plants growing in urban areas are often exposed to salt stress that negatively affects their decorative value. Enhancement of their salt resistance to retain a high decorative value despite salt stress has therefore high practical importance. In our study, the exposure of Plectranthus scutellarioides (L.) R. Br. to NaCl-induced moderate (40 mM) or severe salt stress (80 mM) resulted in a number of stress responses including reduced growth parameters, decreased concentration of photosynthetic pigments, and an increase in the accumulation of anthocyanins and free proline. These changes were partially compensated for by the application of selenium (5 µM as Na2SeO4) to the growth medium. However, the beneficial effect of selenium on the growth and physiological parameters of P. scutellarioides was manifested only at the moderate level of salt stress. Under the severe salt stress, the application of selenium was not able to alleviate the phytotoxic effect of NaCl.

Selenium-induced improvements in the ornamental value and salt stress resistance of <italic>Plectranthus scutellarioides</italic> (L.) R. Br.

Folia Horticulturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Selenium-induced improvements in the ornamental value and salt stress resistance of  (L.) R. Br.

Ornamental plants growing in urban areas are often exposed to salt stress that negatively affects their decorative value. Enhancement of their salt resistance...

Selenium-induced improvements in the ornamental value and salt stress resistance of Plectranthus scutellarioides (L.) R. Br.

Published Online: Jun 30, 2019

Page range: 213 - 221

Received: Dec 20, 2018

Accepted: Apr 04, 2019

DOI: https://doi.org/10.2478/fhort-2019-0016

Keywords
salinity resistance, selenate, trace element

© 2019 Barbara Hawrylak-Nowak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Selenium-induced improvements in the ornamental value and salt stress resistance of Plectranthus scutellarioides (L.) R. Br.

Published Online: Jun 30, 2019

Page range: 213 - 221

Received: Dec 20, 2018

Accepted: Apr 04, 2019

DOI: https://doi.org/10.2478/fhort-2019-0016

Keywordssalinity resistance, selenate, trace element

© 2019 Barbara Hawrylak-Nowak et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
salinity resistance, selenate, trace element