Comparative study of nitrogen fixation and carbon metabolism in two chick-pea (Cicer arietinum L.) cultivars under salt stress

Soussi, M.; Lluch, Carmen; Ocaña, Antonio Cortijo; Norero, Aldo

doi:10.1093/jxb/50.340.1701

Cited by 72 publications

(50 citation statements)

References 34 publications

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“…The Sinorhizobium meliloti (SMCP) strain had the lowest effectiveness with all analysed chickpea cultivars. This variability of effectiveness, observed among symbioses, agreed with results of our previous studies (Mhadhbi et al 2004) and other reports on chickpea-rhizobia (Soussi et al 1999) and common bean-rhizobia symbioses (Aouani et al 1997;Tejera et al 2004).…”

Section: Resultssupporting

confidence: 93%

“…This indicates a general slowdown in the nodule functioning, and hence plant growth. Indeed, osmotic stress is highly manifested in nodules where it disturbs bacteroïd and cell respiration, limits the supply with carbon compounds and consequently affects the metabolic activities (Soussi et al 1999;Serraj et al 1999). SOD, POX and APX were stimulated by mannitolmediated osmotic stress (Table 2).…”

Section: Resultsmentioning

confidence: 99%

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Symbiotic effectiveness and response to mannitol-mediated osmotic stress of various chickpea–rhizobia associations

Mhadhbi

Jebara

Zitoun

et al. 2007

World J Microbiol Biotechnol

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Thirty-six symbiotic associations involving six chickpea cultivars against six rhizobial strains were evaluated for symbiotic performance and responses to osmotic stress applied by mannitol (50 mM) in aerated hydroponic cultures. Analyses in different symbioses were focused on biomass production, nodulation, nitrogen fixation, and their modulation under osmotic stress conditions, as well as expression of nodular antioxidant enzymes. Mesorhizobium ciceri reference (835) and local (CMG6) strains, as well as the local (C 11 ) M. mediterraneum allowed the best symbiotic efficiency for all chickpea cultivars. The osmotic stress induces severe decrease ranging 30-50% in aerial biomass and 50-70% for nitrogen fixation. Nevertheless, plants inoculated with M. ciceri (835) and M. mediterraneum (C 11 ) preserve a relatively high growth (4 g plant -1 ) with nitrogen-fixing activity (25 lmols h -1 plant -1 ). The bacterial partner was the most important factor of variance of the analysed parameters in osmotic stress or physiological conditions where it gets to 60-85%. The strains allowing the best competent symbioses were proposed for field assays. Under osmotic stress, nodular peroxidase (POX) and ascorbate peroxidase (APX) activities were significantly enhanced. The increase of POX and APX was inversely correlated with the inhibition of aerial biomass production (p = 0.05) and nitrogen-fixing capacity (p = 0.01), suggesting a protective role of these enzymes in nodules. Superoxide dismutase (SOD) was also activated in stressed nodules. However, the spectacular decrease in catalase (CAT) activity discounts its involvement in osmotic stress response.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Symbiotic effectiveness and response to mannitol-mediated osmotic stress of various chickpea–rhizobia associations

Mhadhbi

Jebara

Zitoun

et al. 2007

World J Microbiol Biotechnol

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“…This result is in agreement with other data and support the particular sensitivity of SNF to salinity (Yousef and Sprent 1983;Elsheish and Wood 1990;Delgado et al 1994;Soussi et al 1999;Babber et al 2000;Bouhmouch et al 2005). However, a genotypic variability of plant growth and SNF in response to salt has been found in this work.…”

Section: Discussionsupporting

confidence: 93%

“…In addition to its effect on the growth of host plant, salinity affects nodule establishment (Ikeda 1994;Aydi et al 2004), growth (Velagaleti and Marsh 1989;Saadallah et al 2001) and symbiotic activity (Cordovilla et al 1996). However, a stimulation of nodule growth has been observed in some legume species subjected to salt stress like faba bean (Yousef and Sprent 1983), tolerant cultivars of chickpea (Soussi et al 1999) and some lines of Medicago truncatula (Aydi et al 2004). This behaviour would ensure a partial compensation of the reduction in nodule number and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Growth, nitrogen fixation and ion distribution in Medicago truncatula subjected to salt stress

2008

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This study compared the growth, nodulation, N 2 fixation, and ion distribution in three Medicago truncatula lines, in response to salt in nutrient solution. Two local lines (TN8.20 and TN6.18) and a reference line (Jemalong 6) were inoculated with a reference strain Sinorhizobium meliloti 2011, a very tolerant strain to salinity (700 mM NaCl) and grown in a controlled glasshouse with or without 75 mM NaCl. A genotypic variation in tolerance to salt was found: TN6.18 was the most sensitive line whereas TN8.20 was the most tolerant. The relative tolerance of TN8.20 was concomitant with the lowest leaf Na + concentration and the highest nodule biomass production. However, nodule efficiency (amount of nitrogen fixed per g dry weight nodule) decreased in all lines. Results suggest that the tolerance to salt seems to depend on the host plant ability to protect its leaves against an excessive Na + (and Cl − ) accumulation, and its ability to maintain the development of an abundant nodular system, which in turn determines an important rate of nitrogen fixation and allows the plants to conserve their growth potentialities. The loss of the nodular efficiency under salt stress seems to be compensated by a large nodule biomass.

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“…Comparisons between species with extreme differences in salt tolerance support the view that high electrolyte concentration in leaves is an adaptive trait. Soussi [68][69] , et al reported negative effect of salt stress on growth and yield of Cicer arietinum. A high level of Na/K was measured in both salt sensitive pepper and salt tolerant sugarbeet at 0 mM as well as 100 mM NaCl in the external solution.…”

Section: Responses Of Different Genotypesmentioning

confidence: 99%

Gamma Ray Irradiation for Crop Protection Against Salt Stress

et al. 2017

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Legumes have tremendous dietary value for human nutrition. However, the productivity of food legumes is always compromised owing to their insufficient ability to tolerate abiotic stresses such as drought or water logging, marginal soil, low/high temperatures and salt stress. Stress induces changes at the morphological, physiological, biochemical and molecular level which are consequently manifested in terms of reduced seed yield and quality. Salt stress is one of the most important constraints to crop production particularly in the arid and semi-arid regions of the world. Low dose of ionising radiation like gamma ray is reported to induce growth and several other physiological attributes in non-legume and legume crops. Relationship between seed gamma irradiation and salinity stress response could be related to favourable maintenance of gas exchange attributes (P n , g s and E), 14 C partitioning, activity of antioxidative enzymes (SOD, CAT and POX), membrane stability index (MSI) K+ to Na+ ratio, proline and glycine betaine content. One or more mechanisms may contribute simultaneously towards salt tolerance response of crop plants. The present review critically analyses the effect of gamma ray irradiation on growth and development of legumes under salt stress and evaluates the contribution of various physiological and biochemical mechanisms towards radiation mediated alleviation of salt stress response.

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Comparative study of nitrogen fixation and carbon metabolism in two chick-pea (Cicer arietinum L.) cultivars under salt stress

Cited by 72 publications

References 34 publications

Symbiotic effectiveness and response to mannitol-mediated osmotic stress of various chickpea–rhizobia associations

Symbiotic effectiveness and response to mannitol-mediated osmotic stress of various chickpea–rhizobia associations

Growth, nitrogen fixation and ion distribution in Medicago truncatula subjected to salt stress

Gamma Ray Irradiation for Crop Protection Against Salt Stress

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