Alleviation of Salt Stress in Common Bean (Phaseolus vulgaris) by Exogenous Abscisic Acid Supply

The common bean (Phaseolus vulgaris L.), the most important food legume for human nutrition globally, contributes greatly to the improvement of soil fertility in semi-dry lands where most of the soil is already salinized or alkalized, such as in the Songnen Plain of China. In this study, we investigated the effects of salt stress (neutral and alkaline) on the salt-tolerant common bean. Seed germination, seedling growth, photosynthesis, and osmotic adjustment were assessed. Neutral and alkaline salt growth environments were simulated using NaCl and NaHCO3, respectively. The results indicated that at ≥60 mmol·L−1, both NaCl and NaHCO3 caused significant delays in seedling emergence and decreased seedling emergence rates. NaHCO3 stress suppressed seedling survival regardless of concentration; however, only NaCl concentrations >60 mmol·L−1 had the same effect. Alkaline salt stress remarkably suppressed photosynthesis and seedling establishment. The common bean compensated for the increase in inorganic anion concentration (influx of Na+) by synthesizing more organic acids and soluble sugars. This adaptive mechanism enabled the common bean to balance the large inflow of cations for maintaining a stable cell pH environment under alkaline salt stress.

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Biochemical, physiological and phenological genetic analysis in common bean (Phaseolus vulgaris L.) under salt stress

Annals of Agricultural Sciences ◽

10.1016/j.aoas.2018.10.002 ◽

2018 ◽

Vol 63 (2) ◽

pp. 153-161

Author(s):

Yacine Torche ◽

Matthew Blair ◽

Chougui Saida

Keyword(s):

Salt Stress ◽

Phaseolus Vulgaris ◽

Genetic Analysis ◽

Common Bean ◽

Phaseolus Vulgaris L

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Ammonium assimilation and ureide metabolism in common bean (Phaseolus vulgaris) nodules under salt stress

Agronomie ◽

10.1051/agro:2001155 ◽

2001 ◽

Vol 21 (6-7) ◽

pp. 635-643 ◽

Cited By ~ 22

Author(s):

Mariam Khadri ◽

Lina Pliego ◽

Mariam Soussi ◽

Carmen Lluch ◽

Antonio Ocaña

Keyword(s):

Salt Stress ◽

Phaseolus Vulgaris ◽

Common Bean ◽

Ammonium Assimilation

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Plasmid content of salt stress-tolerant Rhizobium strains from Egyptian soils nodulating common bean (Phaseolus vulgaris L.)

World Journal of Microbiology and Biotechnology ◽

10.1007/s11274-007-9618-x ◽

2007 ◽

Vol 24 (8) ◽

pp. 1603-1606 ◽

Cited By ~ 6

Author(s):

Abdelaal Shamseldin

Keyword(s):

Salt Stress ◽

Phaseolus Vulgaris ◽

Common Bean ◽

Phaseolus Vulgaris L ◽

Plasmid Content ◽

Rhizobium Strains

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Role of active transport of potassium to leaves in the mechanisms of tolerance to salinity in common bean (Phaseolus vulgaris L.)

Notulae Scientia Biologicae ◽

10.15835/nsb12210751 ◽

2020 ◽

Vol 12 (2) ◽

pp. 447-459

Author(s):

Sugenith ARTEAGA ◽

Monica BOSCAIU ◽

Jaime PROHENS ◽

Oscar VICENTE

Keyword(s):

Salt Stress ◽

Phaseolus Vulgaris ◽

Common Bean ◽

Stress Tolerance ◽

Soluble Sugars ◽

Sodium Concentration ◽

Total Phenolic ◽

Common Beans ◽

Great Utility

Biochemical markers are of great utility in screening for salt tolerance of crops. In common beans (Phaseolus vulgaris), lower levels of proline under stress have been associated with a better stress resistance of cultivars. In the present study, the responses to salinity have been analysed in six cultivars of common beans: four local landraces from Spain and two experimental lines from Cuba. Proline was used for ranking the relative tolerance of the cultivars, confirming a previous study which reported as more stress-tolerant two of the Spanish landraces. Total soluble sugars concentrations varied with treatments and between genotypes, but it was difficult to assess their role in stress tolerance of the analysed plants. Sodium concentration in leaves was the lowest in one of the two salt-resistant cultivars, and potassium did not vary or even increased under salt stress in all of them, except for the most susceptible one, where a drop of this cation was registered under 150 mM NaCl. Changes in malondialdehyde (MDA) contents did not indicate salt-induced membrane peroxidation resulting from secondary oxidative stress; consequently, accumulation of total phenolic compounds and flavonoids, as an antioxidant defence mechanism, was not detected. These results highlight the reliability of using proline as a biochemical marker of salt stress in common beans and the importance of the mechanism related to potassium transport to leaves in conferring stress tolerance to some common bean cultivars.

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