Original scientific paper

https://doi.org/10.1515/botcro-2016-0038

Response of dihaploid tobacco roots to salt stress

Tihana Marček orcid.org/0000-0002-8617-5009 ; Subdepartment of Biology and Microbiology, Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, HR-31000 Osijek, Croatia
Željka Vidaković-Cifrek ; Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia
Mirta Tkalec orcid.org/0000-0003-4733-828X ; Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia
Marin Ježić ; Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia
Mirna Ćurković-Perica ; Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia

Abstract

Salinity is a common abiotic factor that affects plant growth and development. Seedlings of tobacco (Nicotiana tabacum L.) F1 hybrid DH10 and three dihaploid lines (207B, 238C and 239K) obtained by
diploidization of anther-derived haploids of hybrid DH10 were subjected to 0, 100 and 200 mM NaCl in in vitro conditions for 33 days and the effect on roots was evaluated. In all lines and in the hybrid DH10 exposed to 200 mM NaCl evident root growth inhibition and increased proline content were noticed. However, in some cases lines differed in the activity of antioxidative enzymes, which could account for differences in their salinity tolerance. Increased activity of catalase and peroxidase in roots of line 239K could contribute to the more pronounced salinity tolerance previously reported for shoots of this line.

Keywords

antioxidative enzymes; Nicotiana tabacum L., proline; root; salinity; tobacco dihaploid lines

Hrčak ID:

179956

URI

https://hrcak.srce.hr/179956

Publication date:

1.4.2017.

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