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- Title
Alkaline Salt Tolerance of the Biomass Plant Arundo donax.
- Authors
Müller, Brigitta; Arcoverde Cerveira Sterner, Vitor; Papp, László; May, Zoltán; Orlóci, László; Gyuricza, Csaba; Sági, László; Solti, Ádám; Fodor, Ferenc
- Abstract
Soil alkalinization and salinization have increased worldwide due to extreme and/or prolonged drought periods as well as insufficient irrigation. Since crops generally react to soil salinity and high pH with decreased yield, the cultivation of tolerant biomass plants represents a reasonable alternative. Thus, we aimed to characterize the tolerance of the biomass plant Arundo donax to alkaline salt stress, induced by irrigation water containing NaHCO3 and Na2CO3 mixture (1:1) at 80 mM and 200 mM of final concentration and pH 10. In terms of physiological parameters such as transpiration, chlorophyll content, photosystem II quantum efficiency, relative water content, and water saturation, the plants were resistant to the stress treatment. The negative impact on the water regime was only measured at 200 mM salt. The K/Na ratio decreased in parallel with Na accumulation. Plants also accumulated Zn, whereas a decrease in the concentration of most other elements (Ca, Cu, K, Mg, Ni, S, Si, and Sr) was detected. Antioxidative defence directed by multiple symplastic enzymes contributed to the high physiological tolerance to the applied stress. In conclusion, the cultivation of Arundo donax as a biomass crop appears to be a feasible alternative in areas affected by salinity or alkaline salt accumulation.
- Subjects
SALT tolerance in plants; GIANT reed; PLANT biomass; SOIL salinity; SOIL salinization
- Publication
Agronomy, 2022, Vol 12, Issue 7, p1589
- ISSN
2073-4395
- Publication type
Article
- DOI
10.3390/agronomy12071589