Differential Growth Response to Salt Stress Among Selected Ornamentals

Eom, Seok Hyun; Setter, Tim L.; DiTommaso, Antonio; Weston, Leslie A.

doi:10.1080/01904160701394568

Cited by 23 publications

(14 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In summary, increasing salinity appears to have little effect on micronutrient nutrition in marigold, a finding in agreement with reports by Eom et al (2007) who found that NaCl salinity applied to six groundcover species had no effect on Fe 2+ and Zn 2+ accumulation, increased Mn 2+ in Alchemilla mollis and Solidago cutleri, and decreased Cu 2+ in Nepeta ·faassenii. However, in our study, a higher pH in irrigation water caused decreased leaf Zn 2+ , Cu 2+ , and Mn 2+ concentrations, which ranged between 50% to 223%, 22% to 445%, and 46% to 67%, respectively.…”

Section: Resultssupporting

confidence: 92%

Salinity and Alkaline pH in Irrigation Water Affect Marigold Plants: II. Mineral Ion Relations

Valdéz-Aguilar¹,

Grieve²,

Poss³

et al. 2009

horts

View full text Add to dashboard Cite

Scarcity of good-quality water for landscape irrigation is a major concern in arid and semiarid regions as a result of the competition with the urban population. Competing claims from urban, agricultural, environmental, and industrial groups leaves less water or water of lower quality for use in landscape maintenance. Although degraded waters, high in both salinity and alkaline pH, may challenge plant establishment and growth, these waters must be considered as valuable alternatives to the use of fresh water resources for landscape sites. The objective of the present study was to determine the effect of irrigation with saline water, with and without pH control, on the mineral ion relations of three marigold cultivars: Flagstaff, Yellow Climax, and French Vanilla. Treatments were five electrical conductivities of irrigation water (ECw): 2, 4, 6, 8, and 10 dS·m−1, and two pH levels: 6.4 and 7.8. Plants of ‘French Vanilla’ and flowering stems of ‘Flagstaff’ and ‘Yellow Climax’ were harvested at flower maturity. Leaves of the taller cultivars, Flagstaff and Yellow Climax, were collected separately from the main axis and from the lateral stems, whereas in ‘French Vanilla’, leaves were combined. Total sulfur, total phosphorus, Ca2+, Mg2+, Na+, K+, Cl−, Fe2+, Zn2+, Cu2+, and Mn2+ concentrations in leaf and stem tissues were determined. The three marigold cultivars were strong Ca2+-accumulators and this response was more evident at the lower pH level. However, leaf Ca2+ tended to decrease as salinity increased despite a threefold increase in substrate Ca2+. Leaf Mg2+ increased as salinity increased and main stem leaves of the taller cultivars accumulated more Mg2+ than leaves on the lateral branches. The reverse was true for leaf K+; leaves on the lateral branches were stronger K+-accumulators than those on the main stem. Potassium concentrations in leaves of marigold irrigated with waters at pH 6.4 tended to decrease as ECw increased. Marigold seems to possess an efficient Na+ exclusion mechanism, which restricts Na+ accumulation in the leaves. Patterns of total phosphorus accumulation in leaf tissues were not consistent over the range of ECw treatments. Among the micronutrients, Fe2+ and Mn2+ tended to be partitioned to the younger rather than the older leaves. The decrease in marigold growth was associated with nutrient ion imbalance as demonstrated by the reduction in K+ concentration and the increase in Mg2+ and Cl− in leaf tissue. Despite the reduction in growth, the aesthetic value of the cultivars was not detrimentally affected by application of saline waters with ECw values as high as 8 dS·m−1.

show abstract

Section: Resultssupporting

confidence: 92%

Salinity and Alkaline pH in Irrigation Water Affect Marigold Plants: II. Mineral Ion Relations

Valdéz-Aguilar¹,

Grieve²,

Poss³

et al. 2009

horts

View full text Add to dashboard Cite

show abstract

“…In both cases the damage observed is consistent with that expected of moderately tolerant species experiencing damage and mortality between 23 and 32 g·L −1 (e.g. Eom et al 2007; . Although these plants may be able to withstand moderate levels of saline spray or runoff, knowledge of the extent of exposure and the salinity to which the plants will be exposed should be gained before placing these plants in areas subject to exposure to deicing salt in order to preserve green roof or green wall quality.…”

Section: Discussionsupporting

confidence: 82%

“…Exposing plants to deicing salt may result in damage including necrosis, chlorophyll degradation (Eom et al 2007), early autumn coloring, and witches broom structures (Pedersen et al 2000). Injured plant tissues may have as much as 75 times more sodium than healthy tissues (Bryson and Barker 2002) which continues to accumulate as salt concentrations in plant tissues or soils increase over many seasons .…”

Section: Introductionmentioning

confidence: 99%

Salt tolerance of common green roof and green wall plants

Whittinghill

Rowe

2011

Urban Ecosyst

View full text Add to dashboard Cite

Detrimental effects of road deicing salt on vegetation are well known and have been well studied, with the exception of typical green roof plants, which could experience damage on green roofs with public access and green walls near roadways in cold climates. Two studies were conducted comparing salt tolerance of five Sedum species, two Allium species and a mixture of turf grasses when exposed to six levels of salinity applied either as foliar spray or as liquid applications to the soil. A third study compared salt tolerance when plants were placed at three distances from a major highway. Response variables measured included survival, a health score from 0 to 5, and a growth index. Allium cernuum, A. senscens and S. ellecombianum were relatively tolerant of both saline spray and soil inundation at high saline concentrations in terms of survival, mean health scores, percentage of healthy plants and growth index. Sedum reflexum was much less tolerant of saline spray at higher salinity concentrations and soil inundation regardless of salinity levels. Distance from the road had no effect on plant survival rates but plants farthest from the road had higher mean health scores and a greater percentage of healthy plants than plants closer to the highway.

show abstract

“…To date, most studies have focused predominantly on assessing salt tolerance, physiological responses, and nutritional status in herbaceous perennials (Eom et al, 2007;Zollinger et al, 2007), turf grasses (Marcum, 2006), and greenhouse ornamental crops (Carter et al, 2005a(Carter et al, , 2005bFriedman et al, 2007;Grieve et al, 2006;Sonneveld, 1988), while annual bedding plants, an important horticultural product and seasonal component of landscape design, have been largely ignored.…”

Section: Introductionmentioning

confidence: 99%

ARBUSCULAR MYCORRHIZAL COLONIZATION DOES NOT ALLEVIATE SODIUM CHLORIDE-SALINITY STRESS IN VINCA [CATHARANTHUS ROSEUS(L.) G. DON]

Cartmill

Valdéz-Aguilar

Cartmill

et al. 2013

Journal of Plant Nutrition

View full text Add to dashboard Cite

México 2 We conducted a study to determine if inoculation with arbuscular mycorrhizal fungi (AMF) would enhance the tolerance of vinca [Catharanthus roseus (L.) G. Don] plants to sodium chloride (NaCl)-induced salinity in irrigation water. Vinca tolerated salinity levels up to 40 mM. Chlorophyll concentration, proline synthesis, and total antioxidant activity were increased with saline irrigation, while leaf potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), and boron (B) content decreased, suggesting a detrimental salinity effect. Despite the limited effect of increasing salinity on N content, NaCl-stressed vinca plants showed a marked decrease in nitrate reductase activity, which was associated with decreased leaf K and Fe total content. Mycorrhizal inoculation resulted in reduced growth when compared to non-AMF plants, regardless of salinity level. The K/sodium (Na) ratio decreased dramatically with increasing salinity regardless of AMF treatment. Suggesting, that the AMF isolate was not able to selectively uptake K and Ca, and avoid uptake of Na.

show abstract

Differential Growth Response to Salt Stress Among Selected Ornamentals

Cited by 23 publications

References 28 publications

Salinity and Alkaline pH in Irrigation Water Affect Marigold Plants: II. Mineral Ion Relations

Salinity and Alkaline pH in Irrigation Water Affect Marigold Plants: II. Mineral Ion Relations

Salt tolerance of common green roof and green wall plants

ARBUSCULAR MYCORRHIZAL COLONIZATION DOES NOT ALLEVIATE SODIUM CHLORIDE-SALINITY STRESS IN VINCA [CATHARANTHUS ROSEUS(L.) G. DON]

Contact Info

Product

Resources

About