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

Khadri, Mariam; Tejera, Noel A.; Lluch, Carmen

doi:10.1007/s00344-005-0004-3

Cited by 99 publications

(51 citation statements)

References 53 publications

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“…Shoot growth was more extensively affected than root growth in L. japonicus plants, consequently increases of root to shoot ratio with NaCl in L. japonicus plants are observed. Similar results have been detected in other legumes such as Cicer arietinum (Soussi et al 1998) and Phaseolus vulgaris (Khadri et al 2006), where the authors considered this behaviour profitable since it could improve plant water status by increasing the root requirements to explore a higher soil volume. The specific nitrogenase activity (mmol H 2 g (1 ) decreased from the vegetative (0 DAT) to the fructification stage (28 DAT) in nodules of both legumes; however, the nodular mass (data not shown) augmented in this period, by which the total nitrogenase activity (mmol H 2 plant (1 ) did not decrease in the same extend, supplying fixed nitrogen for the plant growth.…”

Section: Lo´pez and C Lluchsupporting

confidence: 79%

Nitrogen fixation is synchronized with carbon metabolism inLotus japonicusandMedicago truncatulanodules under salt stress

López

Lluch

2008

Journal of Plant Interactions

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In the present work, the response to NaCl applied at the vegetative stage to Medicago truncatula and Lotus japonicus has been evaluated in order to ascertain whether the effect of salt stress on nitrogen fixation is due to a limitation on nodular carbon metabolism. Results show maximum sucrose synthase (SS) and alkaline invertase (AI) activities were obtained at the vegetative stage, when maximum nitrogenase activity was detected in both species. SS activity decreased with the salt treatment, providing evidence of the regulatory role of this enzyme for the carbon supply to the bacteroids. Phosphoenolpyruvate carboxylase (PEPC) and malate dehydrogenase (MDH) activities could account for higher nitrogen fixation efficiency detected in L. japonicus nodules and isocitrate dehydrogenase (ICDH) activity compensated for the carbon limitations that occur under salt stress. These results support that nitrogenase inhibition in nodules experiencing salt stress is doubt to a carbon flux shortage, as result of carbon metabolism enzymes activities down-regulation.

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Section: Lo´pez and C Lluchsupporting

confidence: 79%

Nitrogen fixation is synchronized with carbon metabolism inLotus japonicusandMedicago truncatulanodules under salt stress

López

Lluch

2008

Journal of Plant Interactions

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“…Each replicate consisted of 10 plants. Plants were grown in a plant growth chamber (DAIHAN WGC-1000, South Korea), at 26 o C/18 o C (day/night) temperature having about 70% relative humidity and a light density of 450 molm -2 s -1 (Khadri et al, 2006).…”

Section: Growth Conditions and Salt Treatmentmentioning

confidence: 99%

Physiological, biochemical and mineral dimensions of green beangenotypes depending on Zn priming and salinity

Gulmezoglu

Aydogan

Turhan

2016

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The effects of salinity and zinc (Zn) priming on the physical and mineral composition of green bean genotypes were investigated on two green bean genotypes ('Şeker Fasulye' and 'Local Genotype') by soaking seeds in 0.05% Zn (ZnSO 4 .7H 2 O) solution and by exposing to salt stress by applying 50, 100 and 150 mM NaCl after first true leaf emergence. Plants not exposed to salt stress were treated as control. The effects of Zn priming on the salt tolerance of genotypes, fresh and dry weight of plant leaf relative water content (RWC), loss of turgidity (LOT), Na, K, Ca and Zn concentrations in the leaves, stem and root portions of plants were evaluated. The NaCl concentrations led to significant variations in the examined parameters. The highest concentration of salt (150 mM) caused fading in leaves and led to inhibition of growth and development. Salt application generally reduced the fresh and dry weights of plants of both genotypes where Zn priming showed an amendatory effect. Leaf RWC decreased with salt applications while LOT increased but Zn priming had no amendatory effect on these parameters. 'Şeker Fasulye' genotype was found to be relatively more salt tolerant than 'Local Genotype' on the basis of the investigated parameters. Zinc priming decreased the Na and Ca concentrations in plant organs; however, a decrease in K concentration was observed due to increase in NaCl.

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“…Abscisic acid (ABA). The concentration of abscisic acid was determined following the methods of Khadri et al (2006) and Kishwar et al (2011). The analysis was conducted with untreated seeds, with treated seeds immediately after the application of 80 °C water for 1 min, and with treated seeds of more than 30 das.…”

Section: Biological Material Mature Seeds Of Lupinus Campestrismentioning

confidence: 99%

Comparison of pre-germination treatments in <em>Lupinus</em> spp. and their effects on germination and related solutes

et al. 2017

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Background: Physical dormancy in seeds of the genus Lupinus restricts their ecological or agricultural use. Hypothesis: This dormancy can be broken when seeds are subjected to physical and chemical pretreatments that increase germination, mobilize reserves and decrease ABA. Studied species: Seeds of Lupinus exaltatus (Le), L. campestris (Lc) and L. montanus (Lm) from Puebla, México. Methods:The following seven treatments, including a control, were applied: PG1 = 98 % H 2 SO 4 for 15 min, PG2 = wet sand at 80 °C for 5 min, PG3 = wet sand at 35 °C for 8 h and 16 h at 25 °C, PG4 = dry sand at 80 °C for 7 min, PG5 = dry sand at 150 °C for 1 min, PG6 = H 2 0 at 80 °C for 1 min, Control = untreated seeds. On days 0, 3, 5, 10 and 15 after seeding, we evaluated the percentage and rate of germination (GP and GR, respectively) and biochemical changes. Results: PG6 produced a higher GP in Le (41 %) and Lc (69 %), and PG1 produced a higher GP in Lm (37 %). In all three species, the highest GR was obtained with PG1 (1.95, 2.27 and 2.22 day -1 seeds, respectively). PG6 increased the protein concentration (53, 17, and 43 % for Le, Lc and Lm, respectively), amino acids (19, 44 and 31 %, respectively), reducing sugars (63, 18 and 96 %, respectively) and polyphenols (32, 55 and 75 %, respectively) but decreased soluble sugars (22, 29 and 23 %, respectively) and ABA relative to the control. Although only the correlation between the GP and amino acid content was significant and positive, and the correlation between GP, GR and soluble sugars was significant and negative. Conclusions: The effect of pre-germination treatments on germination was species-specific. The pretreatment with H 2 0 at 80 °C for 1 min increased germination and mobilized the seed's reserves in the process. Key words: Lupinus, physical dormancy, germination, protein, sugars. ResumenAntecedentes: La latencia física en semillas del género Lupinus restringe su uso ecológico o agronómico. Hipótesis: Esta latencia puede liberarse al aplicarles pre-tratamientos físicos y químicos, lo que incrementa la germinación, moviliza reservas y disminuye el ABA. Resultados: El PG6 promovió mayor PG en Le (41 %) y Lc (69 %), y el PG1 en Lm (37 %). En las tres especies, la mayor VG fue con el PG1 (1.95, 2.27 y 2.22 semillas día -1 , respectivamente). Con PG6, se observó un incremento en concentración de proteína (53, 17, 43 % para Le, Lc y Lm, respectivamente), aminoácidos (19, 44 y 31 %), azú-cares reductores (63, 18 y 96 %) y polifenoles (32, 55 y 75 %) pero disminuyeron los azúcares solubles (22, 29 y 23 %) y ABA respecto al control. Aunque solo la correlación entre PG y aminoácidos fue significativa y positiva y entre PG, VG y azúcares solubles es significativa y negativa. Conclusiones: Entre especies, el efecto de los tratamientos pre-germinativos sobre la germinación fue diferencial. El uso de H 2 0 80 °C 1 min incrementó germinación y movilizó las reservas durante el proceso.

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

Cited by 99 publications

References 53 publications

Nitrogen fixation is synchronized with carbon metabolism inLotus japonicusandMedicago truncatulanodules under salt stress

Nitrogen fixation is synchronized with carbon metabolism inLotus japonicusandMedicago truncatulanodules under salt stress

Physiological, biochemical and mineral dimensions of green beangenotypes depending on Zn priming and salinity

Comparison of pre-germination treatments in <em>Lupinus</em> spp. and their effects on germination and related solutes

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