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The Effect of Salinity on the Growth of Sixteen Commercial Barley Lines. The effect of NaCl on the growth of sixteen Chinese barley lines. Plants were germinated in Hoagland's solution and after 6 days transferred to hydroponics (¼ Hoagland's) containing 0 mM or 300 mM NaCl. By day 18 no significant difference was found between the growths of any of the lines at 0 mM NaCl (data not presented), but between genotype differences were apparent when plants were grown in 300 mM NaCl (photograph courtesy of Pro. G. Zhang). Line Zhou 1 (top panel, far right, Z 1, 8) was selected as a salt tolerant line and Zhou 85 (lower panel, far right, Z 85, 16) was selected as a salt-sensitive line (Huang et al., 2006).
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ABSTRACT The original objective of this work was to compare the cellular processes in salt tolerant and salt sensitive plants cells to gain insight into the mechanisms that confer halotolerance. Halotolerant and salt sensitive cell lines were derived from the model glycophyte Arabidopsis thaliana; in addition cell suspension cultures from the dicot...
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The use of halotolerant beneficial plant-growth-promoting (PGP) bacteria is considered as a promising eco-friendly approach to improve the salt tolerance of cash crops. One strategy to enhance the possibility of obtaining stress-alleviating bacteria is to screen salt impacted soils. In this study, amongst the 40 endophytic bacteria isolated from th...
The use of halotolerant beneficial plant-growth-promoting (PGP) bacteria is considered as a promising eco-friendly approach to improve the salt tolerance of cash crops. One strategy to enhance the possibility of obtaining stress-alleviating bacteria is to screen salt impacted soils. In this study, amongst the 40 endophytic bacteria isolated from th...
Citations
... Barley (Hordeum vulgare L.) is an important crop usually used as human food, malt, and feed for animals [21] and is the most important field crop after rice, wheat and maize [22]. Among the cereal crops, barley is considered as a notably salt-tolerant cultivar [23,24], which also shows considerable variation for tolerance towards salinity stress [3,25]. Furthermore, the salt tolerance of barley varies with the plant growth stage. ...
Salinity is one of the major abiotic stresses that affect crop productivity. Identification of the potential novel genes responsible for salt tolerance in barley will contribute to understanding the molecular mechanism of barley responses to salt stress. We compared changes in transcriptome between Hua 11 (a salt-tolerant genotype) and Hua 30 (a salt sensitive genotype) in response to salt stress at the seedling stage using barley cDNA microarrays. In total, 557 and 247 salt-responsive genes were expressed exclusively in the shoot and root tissue of the salt-tolerant genotype, respectively. Among these genes, a number of signal-related genes, transcription factors and compatible solutes were identified and some of these genes were carefully discussed. Notably, a LysM RLK was firstly found involved in salt stress response. Moreover, key enzymes in the pathways of jasmonic acid biosynthesis, lipid metabolism and indole-3-acetic acid homeostasis were specifically affected by salt stress in salt tolerance genotype. These salt-responsive genes and biochemical pathways identified in this study could provide further information for understanding the mechanisms of salt tolerance in barley.
... The ability of halophytes to grow under salinity stress has permitting the identifications of the mechanisms underlying tolerance to this stress (Flowers, 2004, Ruan et al., 2010). Glycophytes do not appear to possess mechanisms of adaptation to the adverse effects of salinity because they evolved in soils with a low content of NaCl (Greenway and Munns, 1980; Attumi, 2007). Furthermore, within the agronomic context, plant tolerance to salts is referred to as the ability of the plant to resist the effects of high concentrations of salts in the root zone or within the plant, with minimal or no reductions in growth or yield (Morales-Garcia, 2008). ...
... Additionally, in H. vulgare, maintenance of the photosynthetic capacity under stress conditions resulted from a higher level of K + and a lower content of Na + in the cytoplasm of mesophyll cells (Garthwaite et al., 2005). In summary, the study K + nutrition under saline conditions, particularly determining which carriers can block the influx of Na + (Zhu, 2001) and which transporters of K + and Na + affect the K + /Na + relationship in the cytoplasm, is important for understanding the mechanisms underlying salt tolerance in plants (Attumi, 2007). Among the species of economic interest, pepper have a high sensitivity to salt stress compared with other vegetable crops, and we thus present a brief review of studies related to Capsicum and salinity stress. ...
Plants are sessile and are exposed to many environmental factors and are therefore under stress. In soils used for agriculture, salinity is a major abiotic factor that affects the growth, yield and quality of crops worldwide, mainly by the accumulation of Na+ in plant tissues and resulting loss of water. Crop peppers of the genus Capsicum have a high sensitivity to stress induced by high concentrations of salts. Throughout their entire ontogeny, pepper plants are susceptible to salt stress, but damage to the seedling is more serious and results in growth retardation and even death of the seedling. Because of the economic importance of peppers, improved tolerance to salinity stress should be the primary target of research for different pepper species. For this reason, we examined the current state of research with regard to the effect of salt stress on plants of the genus Capsicum.
