Paclobutrazol as Aid to Reducing the Effects of Salt Stress in Rhamnus Alaternus Seedlings

Bañón, S.; Ochoa, J.; López, Juan Antonio Martínez; Hernández, Juan Antonio Fernández; Cabañero, Juan José Alarcón; Jiménez, M.N.; Sánchez-Blanco, María Jesús

doi:10.17660/actahortic.2003.609.39

Cited by 11 publications

(12 citation statements)

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“…Reductions in plant growth and dry matter accumulation due to salinity have been described in several ornamental species (Bañón et al . ; Álvarez et al . ; Cassaniti et al .…”

Section: Discussionmentioning

confidence: 99%

“…However, despite the importance of ornamental shrubs in Mediterranean areas, the salt tolerance of such species has received little attention (Bañón et al . ; Valdez‐Aguilar et al . ).…”

Section: Introductionmentioning

confidence: 99%

“…As the competition for high-quality water increases, the use of saline water has become an option for irrigating salt-tolerant ornamentals (Cassaniti et al 2009). However, despite the importance of ornamental shrubs in Mediterranean areas, the salt tolerance of such species has received little attention (Bañ on et al 2005;Valdez-Aguilar et al 2011). Given that NaCl is the most soluble and widespread salt, it is not surprising that all plants have evolved mechanisms to regulate its accumulation and to preferentially select other nutrients commonly present at low concentrations (Munns 2002).…”

Section: Introductionmentioning

confidence: 99%

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Long‐term effect of salinity on plant quality, water relations, photosynthetic parameters and ion distribution in Callistemon citrinus

Álvarez

Sánchez-Blanco

2013

Plant Biol J

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The effect of saline stress on physiological and morphological parameters in Callistemon citrinus plants was studied to evaluate their adaptability to irrigation with saline water. C. citrinus plants, grown under greenhouse conditions, were subjected to two irrigation treatments lasting 56 weeks: control (0.8 dS·m(-1)) and saline (4 dS·m(-1)). The use of saline water in C. citrinus plants decreased aerial growth, increased the root/shoot ratio and improved the root system (increased root diameter and root density), but flowering and leaf colour were not affected. Salinity caused a decrease in stomatal conductance and evapotranspiration, which may prevent toxic levels being reached in the shoot. Net photosynthesis was reduced in plants subjected to salinity, although this response was evident much later than the decrease in stomatal conductance. Stem water potential was a good indicator of salt stress in C. citrinus. The relative salt tolerance of Callistemon was related to storage of higher levels of Na+ and Cl- in the roots compared with the leaves, especially in the case of Na+, which could have helped to maintain the quality of plants. The results show that saline water (around 4 dS·m(-1)) could be used for growing C. citrinus commercially. However, the cumulative effect of irrigating with saline water for 11 months was a decrease in photosynthesis and intrinsic water use efficiency, meaning that the interaction of the salinity level and the time of exposure to the salt stress should be considered important in this species.

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“…Reductions in plant growth and dry matter accumulation due to salinity have been described in several ornamental species (Bañón et al . ; Álvarez et al . ; Cassaniti et al .…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Long‐term effect of salinity on plant quality, water relations, photosynthetic parameters and ion distribution in Callistemon citrinus

Álvarez

Sánchez-Blanco

2013

Plant Biol J

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“…Although there have been many studies on the effects of salt stress on landscape plants, few have investigated the effects of salinity on shrubs, despite their importance for landscaping (Bernstein et al, 1972;Bañon et al, 2005;Cassaniti et al, 2009a;Francois & Clark, 1978;Picchioni & Graham, 2001;Valdez-Aguilar et al, 2011) and production in Mediterranean countries (Marosz, 2004;Zurayk et al, 1993). Salinity may affect the growth of ornamental shrubs by reducing growth and leaf expansion resulting from osmotic effects or toxicity due to the high concentration of Na + and Cl -typical of saline water (USEPA, 1992).…”

Section: Shrubs and Woody Treesmentioning

confidence: 99%

The Response of Ornamental Plants to Saline Irrigation Water

Cassaniti¹,

Romano²,

Flowers³

2012

Irrigation - Water Management, Pollution and Alternative Strategies

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“…Stomatal conductance (gs) and photosynthesis (Pn) were measured at midday using a CIRAS-2 Portable Photosynthesis System. Leaf water potential (Ψh), leaf osmotic potential (Ψo), leaf pressure potential (Ψp) and leaf osmotic potential at full turgor (Ψos) were estimated as described by Bañón et al (2005). B content was determined by inductively coupled plasma-mass spectrometry (Agilent 7500 ICP-MS, International Equipment Trading Ltd., Illinois, USA), and the contents of Cl and Na by ion chromatography (Hewlett Packard/HP 5972 GC/MSD System, AIR Inc., CO, USA).…”

Section: Methodsmentioning

confidence: 99%

Effects of Salinity and Boron Excess on the Growth, Photosynthesis, Water Relation and Mineral Composition of Laurustinus Grown in Greenhouse

Bañón¹,

Miralles²,

Conesa³

et al. 2012

Acta Hortic.

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A greenhouse study was conducted to determine the interactive effects of NaCl salinity and boron on the growth, plant water status, gas exchange, chlorophyll fluorescence and concentrations of sodium (Na), chloride (Cl) and boron (B) in laurustinus (Viburnum tinus L.). Potted plants were grown in a factorial combination of salinity (2 and 6 dS m -1 ) and boron (1 and 6 mg L -1 ). Plant dry weight (DW) decreased with salinity and B excess, particularly as a result of the former. The salinity × B interaction on the plant DW was not significant (additive effects). Salinity increased Na and Cl concentrations in leaf (20 and 35 mg g -1 DW, respectively) resulting in foliar injury. The application of 6 mg L -1 of B (B toxicity or B excess) produced injury symptoms in old leaves (leaf tip and edge burn). Salinity and B toxicity led to leaves dropping, especially the former. B toxicity led to higher B concentrations in insured leaves (1385 mg kg -1 DW) and salinity reduced it to 425 (B x NaCl antagonistic effect). Boron excess did no alter Na and Cl concentrations in leaf. Salinity decreased stomatal conductance (gs) as a regulatory mechanism against osmotic stress, which resulted in a dropping photosynthesis (Pn). Leaf water parameters were only affected by salinity, which enhanced a process of osmotic adjustment and improving the plant water status. Salt-stressed plants showed an adaptive response to salinity, which decreased gs, Pn and quantum yield of photosystem II (éPSII), and dissipated the excess radiant energy as heat (increased non-photochemical quenching [NPQ]). The combination of salinity and B excess maintained éPSII and decreased the effectiveness of stomatal regulation, NPQ and Pn. This caused the lowest plant DW and suggests disorders in electron transport (photorespiration). Our findings suggest that: (1) laurustinus is a B excess sensitive species, (2) salinity reduced the accumulation of B in leaves of the B excess stressed plants but was not enough to prevent injuries in PSII, and (3) B excess or/and salinity provide plants of poor commercial quality.

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Paclobutrazol as Aid to Reducing the Effects of Salt Stress in Rhamnus Alaternus Seedlings

Cited by 11 publications

References 0 publications

Long‐term effect of salinity on plant quality, water relations, photosynthetic parameters and ion distribution in Callistemon citrinus

Long‐term effect of salinity on plant quality, water relations, photosynthetic parameters and ion distribution in Callistemon citrinus

The Response of Ornamental Plants to Saline Irrigation Water

Effects of Salinity and Boron Excess on the Growth, Photosynthesis, Water Relation and Mineral Composition of Laurustinus Grown in Greenhouse

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