Mineral Nutrient Acquisition and Response by Plants Grown in Saline Environments

Grieve, Catherine M.; Grattan, S. R.

doi:10.1201/9780824746728.ch9

Cited by 76 publications

(15 citation statements)

References 195 publications

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“…Although salinity usually decreases P levels in plant tissues, several previous studies have shown that salinity either increased or had no effect on P uptake . Therefore, it could be assumed that several parameters are involved in P uptake such as temperature, water availability in root environment, the species and even the cultivar …”

Section: Discussionmentioning

confidence: 80%

“…50,51 Therefore, it could be assumed that several parameters are involved in P uptake such as temperature, water availability in root environment, the species and even the cultivar. 52 Concerning the leaf nutrient content, results revealed that Ca content did not vary, regardless of the tested treatments. This is in agreement with the findings of Tuna et al who suggested the substitution of Ca by Na in cell membranes under salt stress.…”

Section: Postharvest Applicationsmentioning

confidence: 91%

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Interactive effects of salinity and silicon application on Solanum lycopersicum growth, physiology and shelf‐life of fruit produced hydroponically

et al. 2019

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BACKGROUND Using water with high salinity for plant fertigation may have detrimental effects on plant development and total yield and on the quality of the crop produced. As a possible means to alleviate the negative effects of salinity, silicon (Si) can be incorporated in the nutrient solution supplied to plants. In the present study, hydroponically grown tomato (Solanum lycopersicum Mill.) plants were subjected to two different salinity levels (0 and 50 mmol L−1 NaCl) with and without the application of Si (0 and 2 mmol L−1 K2SiO3) in order to evaluate its possible positive impact on mitigation of salinity stress‐induced symptoms. An additional experiment was implemented with postharvest Si application (sodium silicate) to investigate effects on the shelf‐life of tomato fruit. RESULTS Salinity (50 mmol L−1 NaCl) decreased plant size, total yield and fresh fruit weight while a high percentage of blossom end rot symptoms of tomato fruit was also observed. The application of Si in the nutrient solution counteracted these detrimental effects, generating a higher yield and healthier fruit (lower blossom end rot incidence) compared to the untreated plants (no application of Si). Salinity improved several quality‐related traits in tomato fruit, resulting in higher marketability, whereas the addition of Si (pre‐ and postharvest) maintained fruit firmness following storage thereby increasing the shelf‐life of tomato fruit. CONCLUSIONS These findings indicate that Si application (pre‐ and postharvest) could provide an effective means of alleviating the unfavorable effects of using low‐quality water in plant fertigation on tomato plant development, fruit yield and post‐harvest quality, through increased fruit firmness. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 80%

Section: Postharvest Applicationsmentioning

confidence: 91%

Interactive effects of salinity and silicon application on Solanum lycopersicum growth, physiology and shelf‐life of fruit produced hydroponically

et al. 2019

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“…Nutritional imbalance hampers plant growth, development and also the yield. Imbalances may result from the effect of salinity on nutrient availability, competitive uptake, transport or partitioning within the plant or may be caused by physiological inactivation of a given nutrient resulting in an increase in the plant's internal requirement for that essential element (Grattan and Grieve 1994). Crop performance may be adversely affected by salinityinduced nutritional disorders.…”

Section: Enhancement Of Plant Nutrient Uptakementioning

confidence: 99%

Plant-growth-promoting rhizobacteria to improve crop growth in saline soils: a review

Paul¹,

Lade²

2014

Agron. Sustain. Dev.

372

159

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International audienceSaline soils are a major issue for agriculture because salt turns agronomically useful lands into unproductive areas. The United Nations Environment Program estimates that approximately 20 % of agricultural land and 50 % of cropland in the world is salt-stressed. Soil salinisation is reducing the area that can be used for agriculture by 1–2 % every year, hitting hardest in the arid and semi-arid regions. Salinity decreases the yield of many crops because salt inhibits plant photosynthesis, protein synthesis and lipid metabolism. Plant-growth-promoting rhizobacteria (PGPR), beneficial bacteria that live in the plant root zone named the rhizosphere, is one of the solutions to solve this issue. Indeed rhizobacteria counteract osmotic stress and help plant growth. This article reviews the benefits of plant-growth-promoting rhizobacteria for plants growing in saline soils. The major points are (1) plants treated with rhizobacteria have better root and shoot growth, nutrient uptake, hydration, chlorophyll content, and resistance to diseases; (2) stress tolerance can be explained by nutrient mobilisation and biocontrol of phytopathogens in the rhizosphere and by production of phytohormones and 1-aminocyclopropane-1-carboxylate deaminase; (3) rhizobacteria favour the circulation of plant nutrients in the rhizosphere; (4) rhizobacteria favour osmolyte accumulation in plants; (5) plants inoculated with rhizobacteria have higher K+ ion concentration and, in turn, a higher K+/Na+ ratio that favour salinity tolerance; and (6) rhizobacteria induce plant synthesis of antioxidative enzymes that degrade reactive oxygen species generated upon salt shock

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“…Depending on the type and concentration of salts in the water or growing substrate, ions can exert a beneficial or toxic action, because of a competition effect among ions or predominance of specific ions (Scagel et al, 2017). In particular, Ca 2+ is able to mitigate salt effects in plants treated with NaCl by improving Ca 2+ /Na + selectivity, and maintaining the structural and functional integrity of the membranes, protecting them from the detrimental effects of Na + , as well as reducing the leakage of cytosolic K + (Cramer et al, 1985; Grattan and Grieve, 1999; Renault and Affifi, 2009; Korkmaz et al, 2017). Under short term NaCl stress, cytosolic Ca 2+ at micromolar concentrations has been proven to bind and open the Arabidopsis vacuolar Two Pore K + channel 1 (TPK1) to release K + and maintain favorable Na + /K + ratios; while in prolonged stress, sub-micromolar concentration of Ca 2+ are part of longer-term K + homeostasis in adapted roots (Latz et al, 2013; Wilkins et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Biochemical, Physiological and Anatomical Mechanisms of Adaptation of Callistemon citrinus and Viburnum lucidum to NaCl and CaCl2 Salinization

et al. 2019

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Callistemon citrinus and Viburnum lucidum are appreciated and widespread ornamental shrubs for their abundant flowering and/or brilliant foliage. The intrinsic tolerance to drought/salinity supports their use in urban areas and in xeriscaping. Despite adaptive responses of these ornamental species to sodium chloride (NaCl) have been extensively explored, little is known on the effects of other salt solution, yet iso-osmotic, on their growth, mineral composition and metabolism. The present research was aimed to assess responses at the biochemical, physiological and anatomical levels to iso-osmotic salt solutions of NaCl and CaCl 2 to discriminate the effects of osmotic stress and ion toxicity. The two ornamental species developed different salt-tolerance mechanisms depending on the salinity sources. The growth parameters and biomass production decreased under salinization in both ornamental species, independently of the type of salt, with a detrimental effect of CaCl 2 on C. citrinus. The adaptive mechanisms adopted by the two ornamental species to counteract the NaCl salinity were similar, and the decline in growth was mostly related to stomatal limitations of net CO 2 assimilation rate, together with the reduction in leaf chlorophyll content (SPAD index). The stronger reduction of C. citrinus growth compared to V. lucidum , was due to an exacerbated reduction in net photosynthetic rate, driven by both stomatal and non stomatal limitations. In similar conditions, V. lucidum exhibited other additional adaptive response, such as modification in leaf functional anatomical traits, mostly related to the reduction in the stomata size allowing plants a better control of stomata opening than in C. citrinus . However, C. citrinus plants displayed an increased ability to retain higher Cl - levels in leaves than in roots under CaCl 2 salinity compared to V. lucidum , thus, indicating a further attempt to counteract chloride toxicity through an increased vacuolar compartmentalization and to take advantages of them as chip osmotica.

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Mineral Nutrient Acquisition and Response by Plants Grown in Saline Environments

Cited by 76 publications

References 195 publications

Interactive effects of salinity and silicon application on Solanum lycopersicum growth, physiology and shelf‐life of fruit produced hydroponically

Interactive effects of salinity and silicon application on Solanum lycopersicum growth, physiology and shelf‐life of fruit produced hydroponically

Plant-growth-promoting rhizobacteria to improve crop growth in saline soils: a review

Biochemical, Physiological and Anatomical Mechanisms of Adaptation of Callistemon citrinus and Viburnum lucidum to NaCl and CaCl2 Salinization

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