Influence of Cation Proportions of the Nutrient Solution on Tipburn Incidence in Strawberry Plants

Bautista, A. San; López-Galarza, Salvador; Martínez, A.; Pascual, B.; Maroto, J.V.

doi:10.1080/01904160903093836

Cited by 18 publications

(13 citation statements)

References 20 publications

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“…In contrast, the increased Ca 2+ concentration in the RNS of treatment B was associated with a decline in leaf K level, thereby indicating that the rate of K + transport to the leaves is closely associated with the K + : Ca 2+ ratio in the root zone. This response reveals that the K + : Ca 2+ ratio is more crucial for K + transport to the leaves of NFT‐grown melon than the absolute K + concentration in the RNS, in agreement with previous reports for other crops such as strawberry ( Lieten , 2006; San Bautista et al, 2009). In line, the higher concentrations of macro‐cations ( i.e.…”

Section: Discussionsupporting

confidence: 92%

“…Previous research revealed that the macro‐cation ratios in the NS may have a strong effect on nutrient uptake by plants ( Grattan and Grieve , 1999; Adams , 2002; Sonneveld , 2002; San Bautista et al, 2009). Thus, the question is raised as to how an excessively high Ca 2+ level in the source water used in a closed hydroponic system, which entails a too high Ca 2+ level in the supplied NS, does affect the UC of macronutrients by plants.…”

Section: Introductionmentioning

confidence: 99%

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Spatially Resolved Confocal Resonant Raman Microscopic Analysis of Anode‐Grown Geobacter sulfurreducens Biofilms

2014

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When grown on the surface of an anode electrode, Geobacter sulfurreducens forms a multi-cell thick biofilm in which all cells appear to couple the oxidation of acetate with electron transport to the anode, which serves as the terminal metabolic electron acceptor. Just how electrons are transported through such a biofilm from cells to the underlying anode surface over distances that can exceed 20 microns remains unresolved. Current evidence suggests it may occur by electron hopping through a proposed network of redox cofactors composed of immobile outer membrane and/or extracellular multi-heme c-type cytochromes. In the present work, we perform a spatially resolved confocal resonant Raman (CRR) microscopic analysis to investigate anode-grown Geobacter biofilms. The results confirm the presence of an intra-biofilm redox gradient whereby the probability that a heme is in the reduced state increases with increasing distance from the anode surface. Such a gradient is required to drive electron transport toward the anode surface by electron hopping via cytochromes. The results also indicate that at open circuit, when electrons are expected to accumulate in redox cofactors involved in electron transport due to the inability of the anode to accept electrons, nearly all c-type cytochrome hemes detected in the biofilm are oxidized. The same outcome occurs when a comparable potential to that measured at open circuit (-0.30 V vs. SHE) is applied to the anode, whereas nearly all hemes are reduced when an exceedingly negative potential (-0.50 V vs. SHE) is applied to the anode. These results suggest that nearly all c-type cytochrome hemes detected in the biofilm can be electrochemically accessed by the electrode, but most have oxidation potentials too negative to transport electrons originating from acetate metabolism. The results also reveal a lateral heterogeneity (x-y dimensions) in the type of c-type cytochromes within the biofilm that may affect electron transport to the electrode.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Spatially Resolved Confocal Resonant Raman Microscopic Analysis of Anode‐Grown Geobacter sulfurreducens Biofilms

2014

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“…In tomato, genotypes with higher K uptake generally show increased water use efficiency and salinity tolerance (Ghazi, and Al-Karaki 2008). Higher K levels may also restrict disease and damage by pests (San Bautista et al 2009), as it has been shown that aphid population densities are higher on potassium-deficient than on healthy soybeans (Walter and Difonzo 2007).…”

Section: Discussionmentioning

confidence: 99%

Growth and Fruit Biochemical Characteristics of Three Strawberry Genotypes under Different Potassium Concentrations of Nutrient Solution

2018

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A nutrient solution experiment was performed to evaluate the growth, yield and fruit biochemical characteristics of strawberry under different potassium levels of nutrient solution. Potassium concentrations including 235 (control), 350, 450 and 600 mg L-1 were applied to three strawberry genotypes of Camarosa, Selva and Parus under hydroponic culture. In the three genotypes, the maximum leaf area was observed at 350 mg L-1 K, and the maximum shoot fresh weight was either at 350 mg L-1 (in Camarosa and Parus) or at 400 mg L-1 (in Selva). In Selva, higher yield was produced by higher K concentrations than control (17-33%) and in Camarosa, the maximum yield was produced at 350 mg L-1 (16%), whereas fruit yield in Parus was not affected by K concentrations. In Selva and Parus application of 350 mg L-1 potassium produced more fruits than control. The maximum fruit vitamin C content in Camarosa and Selva was at 350 mg L-1, and in Parus at 450 mg L-1, while the significant lowest in three genotypes was at 600 mg L-1. Fruit titratable acidity and pH in Camarosa and Selva, and fruit TSS in Parus were not affected by K levels. Fruit total soluble solids (TSS) in Camarosa and Selva were maximum in 350 and 450 mg L-1. Increasing K concentrations of nutrient solution increased leaf and fruit K concentration than control. The results indicate that overall plant growth and fruit quality of three strawberry genotypes were increased by 350 mg L-1 potassium, while application of 600 mg L-1 reduced most traits than control. The Selva genotype had also a better response to higher concentration of K than two other genotypes.

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“…The occurrence of tipburn (calcium (Ca) deficiency disorder) is a major problem for the production of lisianthus cultivars because it causes shipment delay, deterioration in plant quality, and serious economic losses. The cause of tipburn has been widely investigated in commercial crops such as lettuce [1][2][3][4][5], Chinese cabbage [6][7][8][9], strawberries [10][11][12][13], and lilies [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Tipburn Incidence and Ca Acquisition and Distribution in Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Cultivars under Different Ca Concentrations in Nutrient Solution

Kuronuma¹,

Ando²,

Watanabe³

2020

Agronomy

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Tipburn (calcium (Ca) deficiency disorder) is a major problem in the production of lisianthus cultivars. However, few studies have investigated the influence of different Ca concentrations in nutrient solution on tipburn incidence and Ca acquisition and distribution. Thus, it remains unclear why some cultivars exhibit tipburn under high Ca concentrations. To address this, we used three lisianthus cultivars ‘Azuma-no-Kaori’ (AK), ‘Celeb Wine’ (CW), and ‘Voyage Yellow’ (VY) and compared tipburn incidence and Ca acquisition and distribution under different Ca concentrations in a nutrient solution (low (40 ppm), moderate (80 ppm), and high (120 ppm) Ca). Tipburn severity and incidence in AK and VY significantly decreased with increasing nutritional Ca concentrations; the Ca concentrations in each organ and Ca acquisition competence (RGRCa) increased at higher nutritional Ca concentrations. In contrast, tipburn incidence in CW was 100% for all treatments. In CW, Ca acquisition competence and Ca concentrations in most organs increased with increasing nutritional Ca concentrations, but the Ca concentrations in the tips of the upper leaves did not differ significantly between treatments. Thus, our results suggest that the cause of tipburn under sufficient Ca conditions is an inability of the plant to distribute Ca to the tips of its upper leaves.

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Influence of Cation Proportions of the Nutrient Solution on Tipburn Incidence in Strawberry Plants

Cited by 18 publications

References 20 publications

Spatially Resolved Confocal Resonant Raman Microscopic Analysis of Anode‐Grown Geobacter sulfurreducens Biofilms

Spatially Resolved Confocal Resonant Raman Microscopic Analysis of Anode‐Grown Geobacter sulfurreducens Biofilms

Growth and Fruit Biochemical Characteristics of Three Strawberry Genotypes under Different Potassium Concentrations of Nutrient Solution

Tipburn Incidence and Ca Acquisition and Distribution in Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Cultivars under Different Ca Concentrations in Nutrient Solution

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