Effects of Rhizobium Strain on the Growth, Nodulation, N2 Fixation and Ions Accumulation in Vicia Faba Plant Under Salt Stress

Author(s):  
Boulbaba L’taief ◽  
Neila Abdi ◽  
Sihem Smari ◽  
Amel Ayari-Akkari ◽  
Mouna Jeridi ◽  
...  

Vicia faba L.-rhizobia symbiosis is utilized in different biological ways to improve the productivity of faba beans. This research aims to analyze the effects of the Rhizobium strain on nodulation, N2 fixation, growth, and ion accumulation under salt stress in Viciafaba. The commercial cultivar of faba beans (Viciafaba L. var. minor) was inoculated with the Rhizobium leguminosarumbiovar, by considering viciae strains S10 and S16, after 15 days of growth. This inoculation was carried out in the solution culture consisting of two salt concentrations; 0 mmole l-1NaCl and 50 mmole l-1NaCl. The results revealed that under saline and non-saline conditions, S10 and S16 strains of Rhizobium leguminosarum resulted in the formation of ineffective and effective symbiosis with faba beans. However, the presence of salt stress resulted in increasing the biomass of nodule and nitrogen content. The concentrations of sodium and chloride, in shoot and root, were increased in the presence of salinity. However, potassium concentration was only increased in the shoot. With and without salinity, phosphorus concentration in the shoots was not modified. The results revealed that the salt tolerance of faba beans, inoculated with two strains of Rhizobium were found to possess association with their stable growth. Moreover, the salt tolerance of faba beans inoculated with two salts tolerant rhizobia was also associated with an increment in the capacity of faba beans to increase nodulation and the concentration of shoot N2, Na and Cl-content. In addition, salt tolerance of this variety, inoculated with Rhizobium strains was associated with a decrement in the concentration of K+ in shoot under the salt constraints.

1994 ◽  
Vol 45 (3) ◽  
pp. 613 ◽  
Author(s):  
JM Carter ◽  
WK Gardner ◽  
AH Gibson

The response of faba beans (Vicia faba L. cv. Fiord) to seed inoculation with eight strains of Rhizobium leguminosarum biovar. viciae was examined in field experiments at six sites on acid soils in south-west Victoria. At two of the sites, two additional strains were examined, and in 1988, 14 strains were examined at one site. Very low natural populations of R. leguminosarum bv. viciae were found at the experimental sites. Most strains resulted in improved early nodulation and increased grain yield at all sites, when compared to inoculation with the commercial strain of rhizobia (SU391). Plant dry matter production and nitrogen accumulation in the plant shoot tissue was also increased at one site during the flowering period by some strains. Large visual differences between plots inoculated with SU391 and other strains were evident at most sites. Most uninoculated treatments were not nodulated and yielded very poorly. Treatments inoculated with the strain SU391 performed similarly to the uninoculated treatments.


2014 ◽  
Vol 13 (41) ◽  
pp. 4081-4092
Author(s):  
Shoukry Adel ◽  
Abou El-Lail Mohamed ◽  
El-Shabrawi Hattem ◽  
El-Nasser Khattab Abd ◽  
Abbas Mohamed

1999 ◽  
Vol 154 (1) ◽  
pp. 127-131 ◽  
Author(s):  
Maria Del Pilar Cordovilla ◽  
Sandra Isabel Berrido ◽  
Francisco Ligero ◽  
Carmen Lluch

2015 ◽  
Vol 28 (12) ◽  
pp. 1281-1287 ◽  
Author(s):  
Graham Hood ◽  
Ramakrishnan Karunakaran ◽  
J. Allan Downie ◽  
Philip Poole

MgtE is predicted to be a Rhizobium leguminosarum channel and is essential for growth when both Mg2+ is limiting and the pH is low. N2 was only fixed at 8% of the rate of wild type when the crop legume Pisum sativum was inoculated with an mgtE mutant of R. leguminosarum and, although bacteroids were present, they were few in number and not fully developed. R. leguminosarum MgtE was also essential for N2 fixation on the native legume Vicia hirsuta but not when in symbiosis with Vicia faba. The importance of MgtE and the relevance of the contrasting phenotypes is discussed.


1992 ◽  
Vol 70 (6) ◽  
pp. 1123-1130 ◽  
Author(s):  
X. Y. Wang ◽  
C. G. Suhayda ◽  
R. E. Redmann

Variability in salt tolerance of three populations of Hordeum jubatum was determined by analysis of growth parameters and ion relations of plants stressed with Na and Mg salts in solution culture experiments. Two populations from saline meadow habitats (Elstow and Floral) and one from a nonsaline site (University) were salinized with Na2SO4 and MgSO4 at Na:Mg molar ratios of 1:1 and 10:1. Elstow and Floral were more salt tolerant than University. University was more sensitive to the high Mg salt stress (Na:Mg, 1:1) than the high Na salt stress (Na:Mg, 10:1). The leaf area, root dry weight, root to shoot ratio under high Mg salt stress, and the root dry weight under high Na salt stress were significantly less for University plants than for Elstow and Floral plants under equivalent conditions. The greater salt tolerance of the two saline populations was correlated with restriction of Na uptake, more efficient transfer of Ca to young leaves, and the restriction of Mg accumulation in leaf tissue. The results supply evidence for physiologically distinct ecotypes of H. jubatum and indicate that habitat-correlated differences in salt tolerance have evolved in populations of this grass species. Key words: ecotype, Hordeum jubatum, ion balance, magnesium sulphate, salt tolerance, sodium sulphate, soil–plant relations, soil salinity.


2002 ◽  
Vol 80 (7) ◽  
pp. 773-778 ◽  
Author(s):  
Edmund B Redfield ◽  
Janusz J Zwiazek

This study examined the feasibility of using water relations to screen black spruce (Picea mariana (Mill.) BSP) planting stock for salt tolerance, prior to planting in saline oil sands tailings. To do so, water relations parameters were derived from pressure–volume curves for individual seedlings prior to salt stress treatments. Pressure–volume curves were constructed for branches removed from the seedlings and the seedlings were subsequently treated with 60 mM NaCl, 120 mM NaCl, or 90 mM Na2SO4 in solution culture. After 2 weeks of treatment, seedlings treated with NaCl solutions had greater needle electrolyte leakage and visible needle injury compared with equimolar and iso-osmotic solutions of Na2SO4, suggesting that chloride played a role in needle injury. At turgor loss point, a more negative osmotic potential was significantly correlated with lower electrolyte leakage in seedlings treated with Na2SO4 but not in those treated with NaCl. The results suggest that, in contrast with NaCl, Na2SO4 injury to black spruce seedlings may be largely due to osmotic stress and that drought tolerance parameters may be more helpful in predicting salt tolerance in plants treated with Na2SO4 than in those treated with NaCl.Key words: osmotic stress, salt stress, drought tolerance, water relations, ion toxicity, black spruce.


2014 ◽  
Vol 37 (9) ◽  
pp. 839-850 ◽  
Author(s):  
Jia-Hui LU ◽  
Xin LÜ ◽  
Yong-Chao LIANG ◽  
Hai-Rong LIN

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