Accumulation capacity of ions in cabbage (Brassica oleracea L.) supplied with sea water

Abstract

Salinity is a major factor limiting plant growth and crop productivity (Allakhverdiev et al. 2000). Salt damage to plants is produced by a combination of several causes, including mainly osmotic injury and specific ion toxicity (Munns et al. 1995) that affect a wide variety of physiological and metabolic processes in plants. Significant ABSTRACTCabbage seedlings were grown hydroponically to study the effects of different concentrations of seawater on the seedling growth, ion content under one-fourth strength Hoagland's nutrient solution in the greenhouse. The biomass of various organs of cabbage seedlings as well as the whole plants was significantly higher in the treatments with 1 g and 2 g sea salt/L than the no-salt control, but the treatments with 4, 5 or 6 g sea salt/L caused a decrease in growth. Root/shoot ratio remained at the level of control regardless of the sea salt treatment. Na + and Cl -concentration in different parts of cabbage seedlings increased significantly, whereas K + and Ca 2+ concentration generally increased at low concentrations of sea salt and then decreased with increasing seawater concentration. Sodium and K + concentrations were significantly higher in the stems than roots and leaves regardless of the sea salt treatment. The sea salt treatment increased Mg 2+ concentration in stems and leaves of cabbage seedlings. An increase in Na + and Cl -concentration in roots, stems and leaves of cabbage seedlings was the main contributor to declining ratios of K + /Na + , Ca 2+ /Na + and Mg 2+ /Na + . The obtained data suggest that cabbage seedlings have strong ability to sustain seawater stress by the regulation of transport and distribution of ions.

Physiological Mechanism of Enhancing Salt Stress Tolerance of Perennial Ryegrass by 24-Epibrassinolide

“…Proline severs as osmoprotentant and antioxidant to protect cells under salt stress. Salt stress may cause nutrient imbalance with increasing uptake of Na + and decreasing K + , Mg 2+ , and Ca 2+ , resulting in Na + toxicity (Hu et al, 2012; Gu et al, 2016). …”

SOS1, HKT1;5, and NHX1 Synergistically Modulate Na+ Homeostasis in the Halophytic Grass Puccinellia tenuiflora

“…Soil salinity is one of the major environmental factors restricting agricultural productivity worldwide (Venema et al, 2002; Zhang et al, 2010; Flowers et al, 2015; Gu et al, 2016). According to Food and Agriculture Organization’s (FAO’s) Land and Plant Nutrition Management Service, over 800 million hectares of land are salt-affected (Munns and Tester, 2008), accounting for over 6% of the world land area (Arabbeigi et al, 2014).…”

Alfalfa crops amended with MSW compost can compensate the effect of salty water irrigation depending on the soil texture

“…It does not only affect physical, chemical, and biological soil processes, but also reduces soil productivity (Ladeiro et al, 2012;Talaat et al, 2014), and soil sustainability (Garg and Singla, 2015), as well as vegetation growth. Waters of marginal quality such as drainage water, groundwater containing elevated salt concentration and treated waste water have become an important consideration in many regions of the world, even though it is being of great importance in arid, semiarid and Mediterranean areas (Gao et al, 2017;Gu et al, 2016;Kameli et al, 2017).…”

“…However, the agricultural excessive application of composts or their low quality can had environmentally prospect because of the accumulation heavy metals (Cu, Zn, Pb and Cd). This face must be taken into account to safeguard application of this byproduct as a soil conditioner (Walker et al, 2004;Mbarki et al, 2016). It has been suggested that plant responses to soil amendment are soil-type specific (Mbarki et al, 2008;Papafillipaki et al, 2015).…”