Nodulation and nitrogen fixation by salinity-tolerant rhizobia in symbiosis with tree legumes

Bala, Neeru; Sharma, Parveen; Lakshminarayana, K.

doi:10.1016/0167-8809(90)90142-z

Cited by 31 publications

(21 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rhizobium strain AC-1 is fast growing strain and was isolated from A. nilotica (Bala et al, 1990). However, some Acacia species appear to nodulate by slow growing Bradyrhizobium only (Dreyfus & Dommergues, 1981), while others are nodutated by both slow and fast growing rhizobia.…”

Section: Discussionmentioning

confidence: 98%

Genetic variability in symbiotic nitrogen fixation between provenances ofAcacia nilotica (L.) Willd. ex Del.

Beniwal

Toky

Sharma

1995

Genet Resour Crop Evol

View full text Add to dashboard Cite

SummaryDifferences in nitrogen fixing abilities of 18 provenances (16 from India, 2 from Israel) of Acacia nilotica (L.) Willd. ex Del. were assessed in sterilized sand in chillum jars and unsterilized field soil in earthen pots, at Hisar (29°lffN lat., 75°46'E long., 215 malt.), India. There were significant differences in growth and amount of nitrogen fixed and stored in plants (P < 0.01) between provenances. The values ranged from 10 to 34 mg N/plant in sterilized sand, and 11 to 44 mg N/plant in unsterilized soil. Maximum nodulation and nitrogen fixation occurred in Sirsa provenance followed by Pali, Coimbatore and Chandigarh provenances. Medinipur, Hisar (local provenance) and two exotics fixed significantly (P < 0.01) lower amounts of nitrogen. These differences attributed to genetic variability among provenances of Acacia nilotica. There were strong and positive correlations between number and mass of nodules with total nitrogen fixed in the plants. The results are important from the point of view of exploiting the genetical variability in A. nilotica in amelioration of wastelands.

show abstract

Section: Discussionmentioning

confidence: 98%

Genetic variability in symbiotic nitrogen fixation between provenances ofAcacia nilotica (L.) Willd. ex Del.

Beniwal

Toky

Sharma

1995

Genet Resour Crop Evol

View full text Add to dashboard Cite

show abstract

“…A number of previous studies have suggested that fast growing isolates are generally more salt‐tolerant than slow growing isolates (Graham & Parker 1964; Bala et al. 1990; Marsudi et al.…”

Section: Discussionmentioning

confidence: 99%

Diversity and salt tolerance of native Acacia rhizobia isolated from saline and non‐saline soils

et al. 2009

View full text Add to dashboard Cite

Re-establishing native vegetation in stressed soils is of considerable importance in many parts of the world, leading to significant interest in using plant-soil symbiont interactions to increase the cost-effectiveness of large-scale restoration. However, effective use of soil microbes in revegetation requires knowledge of how microbe communities vary along environmental stress gradients, as well as how such variation relates to symbiont effectiveness. In Australia, shrubby legumes dominate many ecosystems where dryland salinity is a major issue, and improving plant establishment in saline soils is a priority of regional management agencies. In this study, strains of rhizobial bacteria were isolated from a range of Acacia spp. growing in saline and non-saline soils. Replicates of each strain were grown under several salinity levels in liquid culture and characterized for growth and salt tolerance. Genetic characterization of rhizobia showed considerable variation among strains, with salt tolerance and growth generally higher in rhizobial populations derived from more saline soils. These strains showed markedly different genetic profiles and generic affiliations to those from more temperate soils, suggesting community differentiation in relation to salt stress. The identification of novel genomic species from saline soils suggests that the diversity of rhizobia associated with Australian Acacia spp. is significantly greater than previously described. Overall, the ability of some symbiotically effective strains to tolerate high salinity is promising with regard to improving host plant re-establishment in these soils.

show abstract

“…increase plant dry weight in legumes including Acacia nilotica , Leucaena leucocephala , Prosopis juliflora (Bala et al, 1990), Acacia ampliceps (Zou et al, 1995), Phaseolus vulgaris (Dardanelli et al, 2008), and soybean (Elsheikh and Wood, 1995) under salt stress. These beneficial effects on plant growth result from an effective N 2 -fixing symbiosis, as acetylene reduction activities were detected even at high salinity levels, depending on the Rhizobium –legume associations (Bala et al, 1990; Elsheikh and Wood, 1995; Zou et al, 1995). Indeed, under saline conditions, the salt-tolerant strains of Rhizobium sp.…”

Section: Strategies To Improve Salt Tolerance In Cropsmentioning

confidence: 99%

“…Indeed, under saline conditions, the salt-tolerant strains of Rhizobium sp. formed more effective N 2 -fixing symbiosis with A. nilotica , L. leucocephala , P. juliflora (Bala et al, 1990), A. ampliceps (Zou et al, 1995), and soybean (Elsheikh and Wood, 1995) than did the salt-sensitive strains. These results indicate that biological N 2 -fixation under saline conditions may be improved by inoculation with a salt-tolerant Rhizobium strain.…”

Section: Strategies To Improve Salt Tolerance In Cropsmentioning

confidence: 99%

New Insights on Plant Salt Tolerance Mechanisms and Their Potential Use for Breeding

et al. 2016

View full text Add to dashboard Cite

Soil salinization is a major threat to agriculture in arid and semi-arid regions, where water scarcity and inadequate drainage of irrigated lands severely reduce crop yield. Salt accumulation inhibits plant growth and reduces the ability to uptake water and nutrients, leading to osmotic or water-deficit stress. Salt is also causing injury of the young photosynthetic leaves and acceleration of their senescence, as the Na+ cation is toxic when accumulating in cell cytosol resulting in ionic imbalance and toxicity of transpiring leaves. To cope with salt stress, plants have evolved mainly two types of tolerance mechanisms based on either limiting the entry of salt by the roots, or controlling its concentration and distribution. Understanding the overall control of Na+ accumulation and functional studies of genes involved in transport processes, will provide a new opportunity to improve the salinity tolerance of plants relevant to food security in arid regions. A better understanding of these tolerance mechanisms can be used to breed crops with improved yield performance under salinity stress. Moreover, associations of cultures with nitrogen-fixing bacteria and arbuscular mycorrhizal fungi could serve as an alternative and sustainable strategy to increase crop yields in salt-affected fields.

show abstract

Nodulation and nitrogen fixation by salinity-tolerant rhizobia in symbiosis with tree legumes

Cited by 31 publications

References 36 publications

Genetic variability in symbiotic nitrogen fixation between provenances ofAcacia nilotica (L.) Willd. ex Del.

Genetic variability in symbiotic nitrogen fixation between provenances ofAcacia nilotica (L.) Willd. ex Del.

Diversity and salt tolerance of native Acacia rhizobia isolated from saline and non‐saline soils

New Insights on Plant Salt Tolerance Mechanisms and Their Potential Use for Breeding

Contact Info

Product

Resources

About