Biochemical Markers of Salt Stress in European Larch (Larix decidua)

Notulae Scientia Biologicae. 2018;10(3):430-438 DOI 10.15835/nsb10310322

 

Journal Homepage

Journal Title: Notulae Scientia Biologicae

ISSN: 2067-3205 (Print); 2067-3264 (Online)

Publisher: University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca

Society/Institution: Horticulture and Forestry Society from Transylvania (SHST)

LCC Subject Category: Agriculture: Agriculture (General) | Science: Science (General)

Country of publisher: Romania

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS

Ioana PLESA (University of Agricultural Sciences and Veterinary Medicine, Faculty of Horticulture, 3-5 Mănăștur Street, 400372 Cluj-Napoca)
Mohamad AL HASSAN (1) Universitat Politècnica de València, Institute of Plant Molecular and Cellular Biology (IBMCP, UPV-CSIC), Camino de Vera s/n, 46022, Valencia 2) Lebanese Canadian University (LCU), Faculty of Engineering, Department of Biotechnology, Aintoura)
Adriana F. SESTRAS (University of Agricultural Sciences and Veterinary Medicine, Faculty of Horticulture, 3-5 Mănăștur Street, 400372 Cluj-Napoca)
Oscar VICENTE (Universitat Politècnica de València, Institute of Plant Molecular and Cellular Biology (IBMCP, UPV-CSIC), Camino de Vera s/n, 46022, Valencia)
Monica BOSCAIU (Universitat Politècnica de València, Spain, Mediterranean Agroforestry Institute (IAM, UPV), Camino de Vera s/n, 46022, Valencia)
Radu E. SESTRAS (University of Agricultural Sciences and Veterinary Medicine, Faculty of Horticulture, 3-5 Mănăștur Street, 400372 Cluj-Napoca)

EDITORIAL INFORMATION

Double blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 12 weeks

 

Abstract | Full Text

Larix decidua, the European larch, does not grow in natural saline areas, but it can be affected by salinity either by the common practice of winter de-icing of mountain roads with NaCl, or when grown as an ornamental tree in urban areas by the use of low quality, salinised irrigation water. In the present study, the responses to salt stress of young seedlings obtained from seeds of seven Carpathian larch populations were analysed. After 30 days of treatments with 150 mM NaCl, growth and biochemical parameters were determinated. Salt stress inhibited growth of all seedlings, as shown by the relative reduction of stem length and fresh weight, and induced significant changes in the needle levels of several biochemical stress markers. Seedlings from all populations showed a marked reduction of photosynthetic pigments contents and an increase of proline and malondialdehyde (MDA) concentrations. Under salt stress, plants accumulated Na+ and Cl- in the needles, whereas K+ was maintained at a steady level. Responses of seedlings from the different populations were similar, with only small quantitative differences that did not allow the identification of more salt tolerant genotypes. However, the study revealed that several of the biochemical markers mentioned above can be suitable for the rapid and non-destructive assessment of the effects of salinity in European larch.