Genotipic responses of olive plants to sodium chloride

Tattini, Massimiliano; Bertoni, P.; Caselli, S.

doi:10.1080/01904169209364412

Cited by 88 publications

(71 citation statements)

References 26 publications

(30 reference statements)

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“…In both olive (Tattini et al 1992) and citrus (García-Sánchez et al 2002a), salt tolerance has been associated with the ability to prevent the uptake and/or translocation of saline ions from the root to shoot. Rangpur is considered to be a good salt excluder (Maas 1993) as we observed a mechanism of decreased transport of Cl -and Na + from citrus to roots since Cl -and Na + concentration was higher in roots than in the leaves (Table 1).…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Leaf gas exchange, water relations, nutrient content and growth in citrus and olive seedlings under salinity

et al. 2008

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The effects of salinity on growth, leaf nutrient content, water relations, gas exchange parameters and chlorophyll fluorescence were studied in six-month-old seedlings of citrus (Citrus limonia Osbeck) and rooted cuttings of olive (Olea europaea L. cv. Arbequina). Citrus and olive were grown in a greenhouse and watered with half strength Hoagland's solution plus 0 or 50 mM NaCl for citrus, or plus 0 or 100 mM NaCl for olive. Salinity increased Cl -and Na + content in leaves and roots in both species and reduced total plant dry mass, net photosynthetic rate and stomatal conductance. Decreased growth and gas exchange was apparently due to a toxic effect of Cl -and/or Na + and not due to osmotic stress since both species were able to osmotically adjust to maintain pressure potential higher than in nonsalinized leaves. Internal CO 2 concentration in the mesophyll was not reduced in either species. Salinity decreased leaf chlorophyll a content only in citrus.

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Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Leaf gas exchange, water relations, nutrient content and growth in citrus and olive seedlings under salinity

et al. 2008

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“…Finally, several works showed that leaf K + concentrations in olive were independent or tended to decrease with increasing salt concentrations. Consequently, K + / Na + ratios decreased with salinity, from values ranging from 18 to 40 in non-saline conditions to values of around 0.8-3.5 in saline conditions (>50 mM) (Bartolini et al, 1991;El-Sayed et al, 1996;Tattini et al, 1992;Vigo et al, 2002).…”

Section: Introductionmentioning

confidence: 94%

Three-year field response of young olive trees (Olea europaea L., cv. Arbequina) to soil salinity: Trunk growth and leaf ion accumulation

et al. 2005

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Irrigated olive is rapidly increasing in arid and semiarid areas, many of which may be negatively affected by soil salinity. We evaluated changes in trunk growth and leaf Cl ) , Na + and K + concentrations in young Arbequina olives (Olea europaea L.) grown in a saline-sodic field over a three-year period. The trunk diameter was measured at the beginning and the end of the 1999 (70 trees), 2000 (59 trees) and 2001 (42 trees) growing periods. Leaves, sampled in August of each year, were analyzed for Cl ) , Na + and K + concentrations. Soil salinity (apparent electrical conductivity, ECa) of each monitored tree was measured 14 times during the 1999-2001 experimental period with an electromagnetic sensor and converted to root zone electrical conductivity of the soil saturation extract (ECe) based on ECa-ECe calibration curves. Salinity tolerance was determined using the Maas and Hoffman 'threshold-slope' response model. Based on salinity thresholds (ECe thr ), the tolerance of olive in terms of trunk growth was high in 1999 (ECe thr = 6.7 dS m )1 ), but declined with age and time of exposure to salts by 30% in 2000 (ECe thr = 4.7 dS m )1 ) and by 55% in 2001 (ECe thr = 3.0 dS m )1 ). Based on the high absolute slopes obtained in all years (values between 16% and 23% dS )1 m), olive was classified as very sensitive to ECe values above the threshold. Trunk growth thresholds based on leaf ion concentrations varied, depending on years, between 2.6 and 4.0 mg g )1 (Cl thr ) and between 1.0 and 1.2 mg g )1 (Na thr ), indicating that Arbequina olive was less sensitive to leaf Cl ) and much more sensitive to leaf Na + than values reported as toxic in greenhouse studies. Leaf K + slightly decreased with increasing salinity, whereas the K + /Na + ratio sharply decreased with increasing salinity. We concluded that the initial salinity tolerance of olive was high, but declined sharply with time of exposure to salts and became quite sensitive due primarily to increasing toxic concentrations of Na + in the leaves.

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“…7). This may be attributed to that foliar spray of micronutrients under NaCl stress, that could increase the capability of root system for selectivity K + and Mg ++ ions at high concentration of NaCl, which allows the maintenance of the transportation of both ions and the limitation of Na + ion uptake in the shoots (Tattini et al, 1993 andCarvajal et al, 1999). In this respect K/ Na ratio might be concedered as a tool of plant tolerance to salinity stress.…”

Section: Nutrient Ratiosmentioning

confidence: 99%

Improving Tolerance of Faba Bean during Early Growth Stages to Salinity through Micronutrients Foliar Spray

2010

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Salinity, either of soil or of irrigation water, causes disturbances in plant growth and nutrient balance. Previous work indicates that applying nutrients by foliar application increases tolerance to salinity. A pot experiment with three replicates was carried out in the green house of NRC, Cairo, Egypt, to study the effect of micronutrients foliar application on salt tolerance of faba bean. Two concentrations of a micronutrient compound (0.1% and 0.15%) were sprayed in two different treatments prior to or after the salinity treatments. Levels of NaCl (0.00-1000-2000-5000 ppm) were supplied to irrigation water. Results indicated that 2000 and 5000 ppm NaCl inhibited growth and nutrient uptake. Spraying micronutrients could restore the negative effect of salinity on dry weight and nutrients uptake, when sprayed either before or after the salinity treatments. It is suggested that micronutrient foliar sprays could be used to improve plant tolerance to salinity.

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Genotipic responses of olive plants to sodium chloride

Cited by 88 publications

References 26 publications

Leaf gas exchange, water relations, nutrient content and growth in citrus and olive seedlings under salinity

Leaf gas exchange, water relations, nutrient content and growth in citrus and olive seedlings under salinity

Three-year field response of young olive trees (Olea europaea L., cv. Arbequina) to soil salinity: Trunk growth and leaf ion accumulation

Improving Tolerance of Faba Bean during Early Growth Stages to Salinity through Micronutrients Foliar Spray

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