Influence of host cultivars and Rhizobium species on the growth and symbiotic performance of Phaseolus vulgaris under salt stress

Bouhmouch, Ilham; Souad-Mouhsine, Bouchra; Brhada, F.; Aurag, Jamal

doi:10.1016/j.jplph.2004.12.003

Cited by 82 publications

(43 citation statements)

References 46 publications

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“…Researchers have reported the detrimental effect of salt on growth and survival of rhizobia [118] [119]. The response of legume to salinity varies much depending on soil properties, climatic conditions and plant growth stage [120] [121].…”

Section: Salt and Osmotic Stressesmentioning

confidence: 99%

“…In order to establish a successful rhizobia-legume symbiosis for saline environments, efficient salt tolerant native rhizobia strains should be isolated from saline soils [118] [128]. The study conducted in Meru and Hai Districts northern Tanzania reported that Bradyrhizobia and rhizobia inoculants are efficient supplier of nitrogen to common beans and soy beans respectively and that inoculation is a better option to poor resource farmers who cannot afford to buy expensive inorganic fertilizers [119].…”

Section: Salt and Osmotic Stressesmentioning

confidence: 99%

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Isolation and Characterization of Nitrogen Fixing Rhizobia from Cultivated and Uncultivated Soils of Northern Tanzania

Simon¹,

Mtei²,

Gessesse³

et al. 2014

AJPS

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Soil bacteria 1 called rhizobia are gram-negative capable to colonize the soil immediately surrounding roots under the influence of the plant "rhizosphere" and reduce atmospheric nitrogen into the form available to plants through nitrogen fixation process. Nitrogen is the most limiting and supplied nutrient to most plants, and the determinant of plant growth. Legumes differ with most plants because they have access to nitrogen from both mineral and symbiotic sources. Small-scale farmers who are the major legume producers in Africa rarely apply fertilizers during legume production. Hence, the crop is largely dependent on fixed nitrogen from native nitrogen fixers. Isolation of rhizobia for legume production has been given a little attention in Africa due to inadequate research or negligence of researchers and unawareness of its potential in legume production as well as lack of an intention from skilled personnel to popularize the technology. Evaluation of effectiveness of isolated rhizobia is essential for inoculants preparation, host specificity recommendation and symbiotic effectiveness. The isolation, determination of their population in the soil and assessing factors affecting their population and testing the effectiveness of native nitrogen fixers with respect to right trap host crop are given a special attention in this review.

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Section: Salt and Osmotic Stressesmentioning

confidence: 99%

Section: Salt and Osmotic Stressesmentioning

confidence: 99%

Isolation and Characterization of Nitrogen Fixing Rhizobia from Cultivated and Uncultivated Soils of Northern Tanzania

Simon¹,

Mtei²,

Gessesse³

et al. 2014

AJPS

View full text Add to dashboard Cite

show abstract

“…An explanation for the reduction in symbiotic legume growth might be that the salt stress causes a failure of the infection and nodulation process. For example, according to Bouhmouch et al ( 2005 ), salt inhibits the absorption of Ca, which reduces the growth of roots, root tips, and root hairs, thereby decreasing sites for potential rhizobial infection and further nodule development. Cordovilla et al ( 1995 ) observed that the depressive effect of salt stress on N 2 fi xation by legumes is directly related to the salt-induced decline in dry weight, N content in the shoot, and the salt-induced distortions in nodule structure (Zahran and Abu-Gharbia 1995 ).…”

Section: Effects Of Salinity On Legume-rhizobium Symbiosesmentioning

confidence: 99%

Alleviation of Salt Stress in Legumes by Co-inoculation with Pseudomonas and Rhizobium

Egamberdieva

Jabborova

Wirth³

2013

Plant Microbe Symbiosis: Fundamentals and Advances

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Numerous studies have shown that soil salinity decreases nodulation and dramatically reduces N 2 fi xation and nitrogenase activity of nodulated legumes. Thus, the development of salt-tolerant symbioses is an absolute necessity to enable cultivation of leguminous crops in salt-affected soils. Dual inoculation of legumes with plant growth-promoting rhizobacteria (PGPR) and rhizobia has been reported to increase the number of nodules compared to those formed by a rhizobial strain alone. The production of IAA by Pseudomonas strains represents a benefi cial mechanism that promoted enlargement of root system and thereby further enhanced nutrient uptake, nodulation, and shoot growth of leguminous plants. When PGPR are able to alleviate salt stress experienced by the plant, more nodules might develop into nitrogen-fi xing ones, thereby enabling the plant to obtain part of its nitrogen from the atmosphere. Co-inoculation techniques could be a new approach to increase

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“…In legume-Rhizobium symbiosis, the adverse effects of stresses on nodule functioning vary in intensity, depending on aspects such as plant species, rhizobial strain, and duration and conditions of exposure to the stressful condition (Garg and Gupta, 2000;Bouhmouch et al, 2005;Moró n et al, 2005). Furthermore, the number and total weight of nodules decreased in salinity treatments (Delgado et al, 1994;Merchan et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

“…The salt present in the growth medium may inhibit the absorption of calcium, reducing the emergence and growth of roots and root hairs and decreasing potential infection sites (Zahran and Sprent, 1986). Nodule growth has previously been reported to be affected by salt stress in Glycine max (Delgado et al, 1994;Gordon et al, 1997) and Phaseolus vulgaris (Delgado et al, 1994;Bouhmouch et al, 2005). It has been proposed that the inhibition of photosynthesis in plants subjected to salt stress leads to a restriction of photosynthate transport toward nodules and a reduction in their size (Bekki et al, 1987).…”

Section: Discussionmentioning

confidence: 99%

Differential Expression of the TFIIIA Regulatory Pathway in Response to Salt Stress between Medicago truncatula Genotypes

et al. 2007

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Soil salinity is one of the most significant abiotic stresses for crop plants, including legumes. These plants can establish root symbioses with nitrogen-fixing soil bacteria and are able to grow in nitrogen-poor soils. Medicago truncatula varieties show diverse adaptive responses to environmental conditions, such as saline soils. We have compared the differential root growth of two genotypes of M. truncatula (108-R and Jemalong A17) in response to salt stress. Jemalong A17 is more tolerant to salt stress than 108-R, regarding both root and nodulation responses independently of the nitrogen status of the media. A dedicated macroarray containing 384 genes linked to stress responses was used to compare root gene expression during salt stress in these genotypes. Several genes potentially associated with the contrasting cellular responses of these plants to salt stress were identified as expressed in the more tolerant genotype even in the absence of stress. Among them, a homolog of the abiotic stress-related COLD-REGULATEDA1 gene and a TFIIIA-related transcription factor (TF), MtZpt2-1, known to regulate the former gene. Two MtZpt2 TFs (MtZpt2-1 and MtZpt2-2) were found in Jemalong A17 plants and showed increased expression in roots when compared to 108-R. Overexpression of these TFs in the sensitive genotype 108-R, but not in Jemalong A17, led to increased root growth under salt stress, suggesting a role for this pathway in the adaptive response to salt stress of these M. truncatula genotypes.

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Influence of host cultivars and Rhizobium species on the growth and symbiotic performance of Phaseolus vulgaris under salt stress

Cited by 82 publications

References 46 publications

Isolation and Characterization of Nitrogen Fixing Rhizobia from Cultivated and Uncultivated Soils of Northern Tanzania

Isolation and Characterization of Nitrogen Fixing Rhizobia from Cultivated and Uncultivated Soils of Northern Tanzania

Alleviation of Salt Stress in Legumes by Co-inoculation with Pseudomonas and Rhizobium

Differential Expression of the TFIIIA Regulatory Pathway in Response to Salt Stress between Medicago truncatula Genotypes

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