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Response of Purslane (Portulaca oleracea L.) to Excess Boron and Salinity: Physiological Approach

  • H. SametEmail author
  • Y. Çıkılı
RESEARCH PAPERS
  • 16 Downloads

Abstract

In this study, individual and combined effects of boron and sodium chloride salinity on growth, photosynthetic pigments (chlorophyll and carotenoids content), enzymatic activities (catalase and ascorbate peroxidase), hydrogen peroxide content, malondialdehyde content, proline accumulation, and some ion contents, such as B, Na+, Cl, K+, Ca2+, Mg2+ of purslane (Portulaca oleracea L.) were investigated. Five B levels (0, 4, 8, 16, 24, 40 mg/kg) and 100 mM NaCl were applied to the soil and mixed before sowing. Results showed that purslane growth was reduced significantly by higher B levels and salinity due to ion toxicity and osmotic stress. Also, content of photosynthetic pigments increased with both higher B levels and salinity, but they were decreased with combined effects of them. Tissue B, Na+, Cl, K+ and Ca2+ levels in shoot increased with applied NaCl, but B levels applied together with NaCl caused a decrease in B content due to antagonistic effects between B and Cl ions. The MDA content, proline accumulation, and H2O2 content increased with higher B levels, but salinity caused a decrease in MDA content. The catalase and ascorbate peroxidase activities increased with B and salinity combination, but did not change with salinity. Increasing B reduced the catalase activity. It is suggested that purslane has the potential to manage the amount of soluble boron and also it has a promising potential that can be grown in B-rich and saline soils.

Keywords:

Portulaca oleracea boron enzymatic activity growth proline purslane salinity 

Notes

ACKNOWLEDGMENTS COMPLIANCE WITH ETHICAL STANDARDS

This research was supported by Kocaeli University, Scientific Research Projects Coordination Unit (BAP) (project no. 2015/022).

The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Department of Crop and Animal Production, Vocational School of Food and Agriculture, Kocaeli UniversityKocaeliTurkey
  2. 2.Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Çanakkale Onsekiz Mart UniversityÇanakkaleTurkey

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