Strategies of Salt Tolerance in the Rhizobia-Legume Symbiosis

2013 ◽  
pp. 99-121 ◽  
Author(s):  
M López-Gómez ◽  
F Palma ◽  
C Lluch
Keyword(s):  
Salt Tolerance ◽  
Legume Symbiosis

scholarly journals Contribution of Rhizobium–Legume Symbiosis in Salt Stress Tolerance in Medicago truncatula Evaluated through Photosynthesis, Antioxidant Enzymes, and Compatible Solutes Accumulation

2021 ◽  
Vol 13 (6) ◽  
pp. 3369
Author(s):  
Annie Irshad ◽  
Rana Naveed Ur Rehman ◽  
Muhammad Mohsin Abrar ◽  
Qudsia Saeed ◽  
Rahat Sharif ◽  
...  
Keyword(s):  
Salt Stress ◽  
Survival Rate ◽  
Salt Tolerance ◽  
Stress Tolerance ◽  
Medicago Truncatula ◽  
Soluble Sugars ◽  
Compatible Solutes ◽  
N Fixation ◽  
Salt Stress Tolerance ◽  
Legume Symbiosis

The effects of salt stress on the growth, nodulation, and nitrogen (N) fixation of legumes are well known, but the relationship between symbiotic nitrogen fixation (SNF) driven by rhizobium–legume symbiosis and salt tolerance in Medicago truncatula is not well studied. The effects of the active nodulation process on salt stress tolerance of Medicago truncatula were evaluated by quantifying the compatible solutes, soluble sugars, and antioxidants enzymes, as well as growth and survival rate of plants. Eight weeks old plants, divided in three groups: (i) no nodules (NN), (ii) inactive nodules (IN), and (iii) active nodules (AN), were exposed to 150 mM of NaCl salt stress for 0, 8, 16, 24, 32, 40, and 48 h in hydroponic system. AN plants showed a higher survival rate (30.83% and 38.35%), chlorophyll contents (37.18% and 44.51%), and photosynthesis compared to IN and NN plants, respectively. Improved salt tolerance in AN plants was linked with higher activities of enzymatic and nonenzymatic antioxidants and higher K+ (20.45% and 39.21%) and lower Na+ accumulations (17.54% and 24.51%) when compared with IN and NN plants, respectively. Additionally, higher generation of reactive oxygen species (ROS) was indicative of salt stress, causing membrane damage as revealed by higher electrolyte leakage and lipid peroxidation. All such effects were significantly ameliorated in AN plants, showing higher compatible solutes (proline, free amino acids, glycine betaine, soluble sugars, and proteins) and maintaining higher relative water contents (61.34%). This study advocates positive role of Rhizobium meliloti inoculation against salt stress through upregulation of antioxidant system and a higher concentration of compatible solutes.

Application of SSR Technique for the Identification of Markers Linked to Salinity Tolerance in Rice

2013 ◽  
Vol 19 (2) ◽  
pp. 57-65
Author(s):  
MH Kabir ◽  
MM Islam ◽  
SN Begum ◽  
AC Manidas
Keyword(s):  
Salt Tolerance ◽  
Ssr Markers ◽  
Salinity Tolerance ◽  
Seedling Stage ◽  
Phenotypic Screening ◽  
Salt Tolerant ◽  
Marker Assisted Breeding ◽  
Hydroponic System ◽  
Rice Landrace ◽  
Salt Susceptible

A cross was made between high yielding salt susceptible BINA variety (Binadhan-5) with salt tolerant rice landrace (Harkuch) to identify salt tolerant rice lines. Thirty six F3 rice lines of Binadhan-5 x Harkuch were tested for salinity tolerance at the seedling stage in hydroponic system using nutrient solution. In F3 population, six lines were found as salt tolerant and 10 lines were moderately tolerant based on phenotypic screening at the seedling stage. Twelve SSR markers were used for parental survey and among them three polymorphic SSR markers viz., OSR34, RM443 and RM169 were selected to evaluate 26 F3 rice lines for salt tolerance. With respect to marker OSR34, 15 lines were identified as salt tolerant, 9 lines were susceptible and 2 lines were heterozygous. While RM443 identified 3 tolerant, 14 susceptible and 9 heterozygous rice lines. Eight tolerant, 11 susceptible and 7 heterozygous lines were identified with the marker RM169. Thus the tested markers could be efficiently used for tagging salt tolerant genes in marker-assisted breeding programme.DOI: http://dx.doi.org/10.3329/pa.v19i2.16929 Progress. Agric. 19(2): 57 - 65, 2008

INDUCING SALT TOLERANCE IN FRENCH MARIGOLD (TAGETES PATULA) THROUGH SEED PRIMING

2017 ◽  
Vol 16 (3) ◽  
pp. 109-118 ◽  
Author(s):  
Irfan Afzal ◽  
Abdul Rahim ◽  
Muhammad Qasim ◽  
Adnan Younis ◽  
Aamir Nawaz ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Seed Priming ◽  
Tagetes Patula

Comparison of salt tolerance between two potential cultivars of Phoenix dactylifera L. growing in Saudi Arabia

2019 ◽  
Vol 52 (3) ◽  
Author(s):  
Fahad Al-Qurainy ◽  
Salim Khan ◽  
Mohamed Tarroum ◽  
Mohammad Nadeem ◽  
Saleh Alansi ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Salt Tolerance ◽  
Phoenix Dactylifera ◽  
Phoenix Dactylifera L
Sign in / Sign up

Export Citation Format

Share Document