Labeled Sodium (22Na+) Uptake and Translocation in Rabbiteye Blueberry Exposed to Sodium Chloride and Supplemental Calcium

Wright, Glenn C.; Patter, Kim D.; Drew, M. C.

doi:10.21273/jashs.120.2.177

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…Accumulation of Na and Cl in plant tissues under salinity has been associated with osmotic adaptation (Heuer and Nadler, 1998;Pardossi et al, 1999) and improvement of water status in Vaccinium ashei Rehd. (Wright et al, 1995) and Pistacia spp. (Picchioni and Miyamoto, 1990).…”

Section: Resultsmentioning

confidence: 98%

Effect of Saline Water Irrigation on Growth and Physiological Responses of Three Rose Rootstocks

Niu¹,

Rodriguez²,

Aguiniga³

2008

horts

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Salt-tolerant landscape plants are needed for arid and semiarid regions where the supply of quality water is limited and soil salinization often occurs. This study evaluated growth, chloride (Cl) and sodium (Na) uptake, relative chlorophyll content, and chlorophyll fluorescence of three rose rootstocks [Rosa ×fortuniana Lindl., R. multiflora Thunb., and R. odorata (Andr.) Sweet] irrigated with saline solutions at 1.6 (control), 3.0, 6.0, or 9.0 dS·m−1 electrical conductivity in a greenhouse. After 15 weeks, most plants in 9.0 dS·m−1 treatment died regardless of rootstock. Significant growth reduction was observed in all rootstocks at 6.0 dS·m−1 compared with the control and 3.0 dS·m−1, but the reduction in R. ×fortuniana was smaller than in the other two rootstocks. The visual scores of R. multiflora at 3.0 and 6.0 dS·m−1 were slightly lower than those of the other rootstocks. Rosa odorata had the highest shoot Na concentration followed by R. multiflora; however, R. multiflora had the highest root Na concentration followed by R. odorata. All rootstocks had higher Cl accumulation in all plant parts at elevated salinities, and no substantial differences in Cl concentrations in all plant parts existed among the rootstocks, except for leaf Cl concentration in R. multiflora, which was higher than those in the other two rootstocks. The elevated salinities of irrigation water reduced the relative chlorophyll concentration, measured as leaf SPAD readings, and maximal photochemical efficiency of photosystem II (PSII) and minimal fluorescence (Fo)/maximum fluorescence (Fv/Fm), but the largest reduction in Fv/Fm was only 2.4%. Based on growth and visual quality, R. ×fortuniana was relatively more salt-tolerant than the other two rootstocks and R. odorata was slightly more salt-tolerant than R. multiflora.

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Section: Resultsmentioning

confidence: 98%

Effect of Saline Water Irrigation on Growth and Physiological Responses of Three Rose Rootstocks

Niu¹,

Rodriguez²,

Aguiniga³

2008

horts

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“…The addition of Ca 2+ ameliorates the adverse effects of salinity on plants Martínez-Ballesta et al, 2000), although it has been reported that the addition of Ca 2+ has no effect on the salt tolerance of some lettuce genotypes (Cramer and Spurr, 1986). In blueberry plants treated with high NaCl levels, high Ca 2+ concentrations may even be harmful (Wright et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Physiological behaviour of loquat and anger rootstocks in relation to salinity and calcium addition

García-Legaz¹,

López-Gómez²,

Beneyto³

et al. 2008

Journal of Plant Physiology

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“…It is known that the addition of Ca 2+ ameliorates the adverse effects of salinity on plants Martínez-Ballesta et al, 2000). However it has been reported that Ca 2+ addition has no effects on the salt tolerance of some lettuce genotypes (Cramer and Spurr 1986), and in blueberry plants treated with high NaCl levels, high Ca 2+ concentrations are even harmful (Wright et al 1995).…”

Section: Introductionmentioning

confidence: 99%

The effect of calcium on the antioxidant enzymes from salt-treated loquat and anger plants

Hernández¹,

Aguilar²,

Portillo³

et al. 2003

Functional Plant Biol.

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Salt treatment (50 mM NaCl) reduced plant growth of loquat (Eribotria japonica Lindl.) (by up to 40%) but not that of anger (Cydonia oblonga Mill.). Salt stress induced a strong leaf Na+ accumulation in both species. However, the observed increase in leaf Cl– level was higher in loquat (13-fold) than in anger plants (3.8-fold). Addition of Ca2+ (25 mM) significantly reduced Na+ and Cl– concentrations in both salt-treated species. In anger leaves, calcium addition to the nutrient media did not change the leaf calcium contents in salt-treated or untreated plants, this value being lower in salt-treated plants. However, in loquat plants, an increase in leaf Ca2+ was observed after the calcium addition. Surprisingly, an increase in Ca2+ concentration was also observed in salt-treated loquat plants. In general, anger plants had higher constitutive antioxidant enzyme levels in both control and salt-treated plants. Salt stress did not change antioxidant enzyme levels in loquat plants. A similar effect was observed in anger plants, but in this case a 2-fold induction of monodehydroascorbate reductase (MDHAR) activity was observed.In both species, salinity produced an oxidative stress, indicated by an increase in lipid peroxidation, this value being much higher in loquat (83%) than in anger (40%) plants. In salt-treated plants, Ca2+ addition provided some protection to the membranes, because the increases observed in thiobarbituric-acid-reactive substances (TBARS) were not significant.In contrast, in control plants Ca2+ treatments increased glutathione reductase (GR) and decreased catalase activity in anger, but increased MDHAR, dehydroascorbate reductase (DHAR), GR and superoxide dismutase (SOD) in loquat plants. In salt-treated plants, Ca2+ additions decreased catalase (CAT) and ascorbate peroxidase (APX) for anger and raised DHAR, GR and SOD for loquat. However, the mechanism by which Ca2+ regulates antioxidant enzymes remains to be determined.These results suggest that anger plants have a higher capacity to scavenge AOS, both under saline and non-saline conditions. Accordingly, and related to the smaller Cl– increase observed, anger plants are more salt-tolerant, at least partly owing to the higher antioxidant enzyme levels observed.

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Labeled Sodium (22Na+) Uptake and Translocation in Rabbiteye Blueberry Exposed to Sodium Chloride and Supplemental Calcium

Cited by 11 publications

References 13 publications

Effect of Saline Water Irrigation on Growth and Physiological Responses of Three Rose Rootstocks

Effect of Saline Water Irrigation on Growth and Physiological Responses of Three Rose Rootstocks

Physiological behaviour of loquat and anger rootstocks in relation to salinity and calcium addition

The effect of calcium on the antioxidant enzymes from salt-treated loquat and anger plants

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