Physiological and nutritional indicators of tolerance to salinity in chickpea plants growing under symbiotic conditions

Tejera, Noel A.; Soussi, M.; Lluch, Carmen

doi:10.1016/j.envexpbot.2005.06.007

Cited by 109 publications

(48 citation statements)

References 35 publications

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“…According to Gordon et al (1997), the decrease of nodule DW in the presence of salt could be related to a limitation of both root growth and the feeding of these organs with photosynthates, likely owing to (i) the decrease of photosynthetic activity under salt stress (Lopez et al, 2008) and (ii) the inhibition of enzymes associated with sucrose degradation (Gonzalez et al, 1998;Lopez et al, 2008). Concerning symbiotic nitrogen fixation, our data showed a significant decrease in nodule N 2 fixing capacity per plant under high levels of salt (200 mM NaCl), which is consistent with previous findings (Tejera et al, 2006). The negative relationship observed between N 2 fixed and nodule Na + content ( Figure 6A) suggests that Na + accumulation in nodules may account for the reduction of N 2 fixation, as hypo-thesized by Faidi (2002) and .…”

Section: Discussionsupporting

confidence: 91%

“…This finding was also observed in Phaseolus vulgaris (Saadallah et al, 2001), chick pea (Tejera et al, 2005) and Leucaena leucocephala (Anthraper et al, 2003). According to Gordon et al (1997), the decrease of nodule DW in the presence of salt could be related to a limitation of both root growth and the feeding of these organs with photosynthates, likely owing to (i) the decrease of photosynthetic activity under salt stress (Lopez et al, 2008) and (ii) the inhibition of enzymes associated with sucrose degradation (Gonzalez et al, 1998;Lopez et al, 2008).…”

Section: Discussionmentioning

confidence: 61%

“…Osmotic stress caused by ions accumulation (mainly Na + and Cl -) in the soil solution decreases the availability of water to roots; whereas, ion toxicity occurs when plant roots take up Na + and/or Cl -and when these ions accumulate to harmful levels in leaves, may lead to deficiencies of several nutrients (Tejera et al, 2006;Rejili, 2007). In legumes, salinity affects the Rhizobium-legume symbiosis by reducing plant growth and available photosynthates (Salah, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Eco-physiological responses and symbiotic nitrogen fixation capacity of salt-exposed Hedysarum carnosum plants

Kouas¹,

Slatni²,

Salah³

et al. 2010

Afr. J. Biotechnol.

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Nitrogen nutrition of Hedysarum carnosum, a pastoral legume common in Tunisian central and southern rangelands, largely depends on atmospheric nitrogen fixation. Yet, this process is greatly affected by environmental factors such as salinity. This study aimed to characterize the tolerance limits and the physiological responses of H. carnosum to salinity under symbiotic nitrogen fixation. Salt treatment was imposed by adding NaCl at different concentrations (0, 50, 100 and 200 mM) to the nutrient solution. Na + content generally increased in the plant organs with increasing salinity in the culture medium. Especially, an excess accumulation of this cation was observed in leaves. Despite the fact that Na + accumulation decreased plant growth, both nodulation and symbiotic nitrogen fixation capacity of H. carnosum appeared to be relatively salt-tolerant, owing to the plant capacity to maintain tissue hydration, control Na + accumulation in shoots, and to conserve nodule efficiency to fix N 2 . Taken together, our findings indicate that H. carnosum is a glycophyte that can tolerate moderate salinity (100 mM), suggesting its possible utilization (i) in the improvement of soil fertility and (ii) in saline pastures, where the survival of other fodder species is critical.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

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Eco-physiological responses and symbiotic nitrogen fixation capacity of salt-exposed Hedysarum carnosum plants

Kouas¹,

Slatni²,

Salah³

et al. 2010

Afr. J. Biotechnol.

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“…Osmotic homeostasis is accomplished by accumulation of compatible osmolytes in the cytosol for intracellular osmotic homeostasis (Zeng et al, 2003b;Raza et al, 2007). These N containing compounds (NCC) such as amino acids (proline and glycinebetaine) have pivotal roles in osmotic adjustment, protection of cellular macromolecules, storage form of N, maintenance of cellular pH, detoxification of the cells, and scavenging of free radicals (Tejera et al, 2006;Siddiqui et al, 2010). Proline accumulation might be used as an indicator in selection for withstanding saline stress through the participation in osmoregulation (Ueda et al, 2007;Tammam et al, 2008).…”

mentioning

confidence: 99%

Long term salinity stress in relation to lipid peroxidation, super oxide dismutase activity and proline content of salt-sensitive and salt-tolerant wheat cultivars

Borzouei

Kafi

Akbari-Ghogdi

et al. 2012

Chilean J. Agric. Res.

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Salinity is a widespread root medium problem limiting productivity of cereal crops worldwide. The ability of plants to tolerate salt is determined by multiple biochemical pathways that facilitate retention and/or acquisition of water, protect chloroplast functions, and maintain ion homeostasis. Therefore, the ability of salt-sensitive ('Tajan') and salt-tolerant cultivar ('Bam') of Triticum aestivum L. to adapt to a saline environment were evaluated in a set of greenhouse experiments under salt stress during three growth stages (tillering, 50% anthesis, and 10 d after anthesis). Plants were irrigated by different saline waters with electrical conductivities of 1.3, 6, 8, 10, and 12 dS m -1 , which were obtained by adding NaCl:CaCl2 in 10:1 molar ratio to fresh water. Differences in growth parameters, lipid peroxidation, superoxide dismutase (SOD) activity, and proline accumulation were tested in order to put forward the relative tolerance or sensitivity of cultivars. Results indicated that both parameters differ according to the cultivar's ability in coping oxidative stress caused by salinity. We observed a greater decline in the growth parameters and grain yield under salt stress in 'Tajan' than in 'Bam'. Malondialdehyde content was also higher in 'Tajan'. The improved performance of the 'Bam' under high salinity was accompanied by an increase in SOD (EC 1.15.1.1) activity and proline content at all growth stages. Growth parameters, lipid peroxidation and proline accumulation results are also in good correlation with supporting this cultivar is being relatively tolerant.

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“…In contrast, the total N content decreased significantly in both shoots and roots of faba bean inoculated by RhOF6 or RhOF21 and exposed to MC. According to our knowledge, the effect of cyanotoxins on N assimilation have not previously been reported, but the decline of N uptake by bean plants under other environmental stresses, has been reported in several studies (Hunt and Layzell 1993;Sadiki and Rabih 2001;Zahran 2001;Garg and Singla 2004;Abdelly et al 2005;Tejera et al 2006;Krouma 2009) and they could be due to: (i) a preferential degradation of the leghemoglobin (Delgado et al 1993), (ii)a decrease in the activity of enzymes involved in tissue protection against reactive oxygen species (Sheokand and Dhandi 1995), and (iii) an inhibition of ammonium assimilation pathways, particularly as a consequence of a decrease in glutamine synthetase activity (Cordovilla et al 1994). Results of other investigators attribute the decline of nitrogenase activity to the limitation of oxygen diffusion in the nodules.…”

Section: Discussionmentioning

confidence: 92%

Cyanobacterial extracts containing microcystins affect the growth, nodulation process and nitrogen uptake of faba bean (Vicia faba L., Fabaceae)

et al. 2011

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The use of irrigation water containing cyanobacterial toxins may generate a negative impact in both yield and quality of agricultural crops causing significant economic losses. We evaluated the effects of microcystins (MC) on the growth, nodulation process and nitrogen uptake of a Faba bean cultivar (Vicia faba L., Fabaceae), particularly the effect of MC on rhizobia-V. faba symbiosis. Three rhizobial strains (RhOF4, RhOF6 and RhOF21), isolated from nodules of local V. faba were tested. The exposure of rhizobia to MC showed that the toxins had a negative effect on the rhizobial growth especially at the highest concentrations of 50 and 100 μg/l. The germination of faba bean seeds was also affected by cyanotoxins. We registered germination rates of 75 and 68.75% at the toxin levels of 50 and 100 μg/l as compared to the control (100%). The obtained results also showed there was a negative effect of MC on plants shoot, root (dry weight) and total number of nodules per plant. Cyanotoxins exposure induced a significant effect on nitrogen assimilation by faba bean seedlings inoculated with selected rhizobial strains RhOF6 and RhOF21, while the effect was not significant on beans seedling inoculated with RhOF4. This behavior of tolerant rhizobia-legumes symbioses may constitute a very important pathway to increase soil fertility and quality and can represent a friendly biotechnological way to remediate cyanotoxins contamination in agriculture.

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Physiological and nutritional indicators of tolerance to salinity in chickpea plants growing under symbiotic conditions

Cited by 109 publications

References 35 publications

Eco-physiological responses and symbiotic nitrogen fixation capacity of salt-exposed Hedysarum carnosum plants

Eco-physiological responses and symbiotic nitrogen fixation capacity of salt-exposed Hedysarum carnosum plants

Long term salinity stress in relation to lipid peroxidation, super oxide dismutase activity and proline content of salt-sensitive and salt-tolerant wheat cultivars

Cyanobacterial extracts containing microcystins affect the growth, nodulation process and nitrogen uptake of faba bean (Vicia faba L., Fabaceae)

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