The Influence of Root Temperature on Apple Trees. IV. The Effect on the Mineral Nutrition of the Tree

Gur, A.; Hepner, J.; Shulman, Y.

doi:10.1080/00221589.1979.11514888

Cited by 17 publications

(8 citation statements)

References 8 publications

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“…Potassium (K) leaf content has been shown to be reduced by supraoptimal RZT (Barr and Pellett, 1972). Reduced leaf K content of apple grown at a constant 30°C RZT could be overcome by high K concentrations in nutrient solutions in sand culture but not at a 35°C RZT (Gur et al, 1979;Gur and Shulman, 1971). Foliar sprays of potassium nitrate resulted in a similar response as increased K in the nutrient solution (Gur et al, 1976b).…”

Section: Indirect Injurymentioning

confidence: 99%

Review: Characterization and Impact of Supraoptimal Root-zone Temperatures in Container-grown Plants

Ingram¹,

Ruter

Martin³

2015

horts

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Section: Indirect Injurymentioning

confidence: 99%

Review: Characterization and Impact of Supraoptimal Root-zone Temperatures in Container-grown Plants

Ingram¹,

Ruter

Martin³

2015

horts

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“…In addition, heat stress may also lead to direct inhibitions of nutrient uptake or even to the change of contents of basic nutrients such as N and P in plant tissues (Gur andShulman 1979, Huang andXu 2000), thus it is important to understand how heat stress may be alleviated by the supply of macronutrients.…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Effects of foliar application of nitrogen on the photosynthetic performance and growth of two fescue cultivars under heat stress

Zhao¹,

Xu²,

Li³

et al. 2008

Biologia plant.

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The effects of nitrogen fertilization on the growth, photosynthetic pigment contents, gas exchange, and chlorophyll (Chl) fluorescence parameters in two tall fescue cultivars (Festuca arundinacea cv. Barlexas and Crossfire II) were investigated under heat stress at 38/30 °C (day/night) for two weeks. Shoot growth rate of two tall fescue cultivars declined significantly under heat stress, and N supply can improved the growth rates, especially for the Barlexas. Chl content, leaf net photosynthetic rate, stomatal conductance, water use efficiency, and the maximal efficiency of photosystem 2 photochemistry (F v /F m ) also decreased less under heat stress by N supply, especially in Crossfire II. Moreover, cultivar variations in photosynthetic performance were associated with their different response to heat stress and nitrogen fertilization, which were evidenced by shoot growth rate and photosynthetic pigment contents.

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“…Leaf injury under high soil temperatures has been attributed to direct inhibition of root growth (Xu and Huang, 2000), hormone synthesis and transport (Udomprasert, et al, 1995), water uptake (Graves et al, 1991; Huang et al, 1991), and nutrient uptake (Gur and Shulman, 1979; Huang and Xu, 2000). Other biochemical processes may be involved in leaf senescence at high soil temperatures.…”

mentioning

confidence: 99%

Supraoptimal Soil Temperatures Induced Oxidative Stress in Leaves of Creeping Bentgrass Cultivars Differing in Heat Tolerance

Huang

Liu

2001

Crop Science

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High temperature is a major factor limiting growth of cool‐season grasses during summer months. The objective of this study was to determine whether oxidative stress is involved in leaf injury induced by high soil temperatures in two creeping bentgrass (Agrostis palustris Huds.) cultivars, heat‐tolerant L‐93 and heat‐sensitive Penncross. Shoots and roots were exposed to four differential temperature regimes in growth chambers and water baths: (i) 20/20°C (control); (ii) 20/35°C (high soil temperature); (iii) 35/20°C (high air temperature); and (iv) 35/35°C (high shoot/soil temperatures). Turf quality, leaf photochemical efficiency (Fv/Fm), electrolyte leakage (EL), content of a lipid peroxidation product (malondialdehyde, MDA), and activities of the antioxidants superoxide dismutase (SOD) and catalase (CAT) were determined. Turf quality and leaf Fv/Fm ratio decreased, whereas EL and MDA contents increased under high soil temperature alone or in combination with high air temperature regimes in both cultivars, but to a greater extent in Penncross than in L‐93. Decreases in turf quality and Fv/Fm ratio and increases in EL and MDA were more pronounced at 20/35°C than at 35/20°C. The activities of SOD and CAT decreased with prolonged periods of high temperatures and to a greater extent for Penncross than for L‐93. The reductions in SOD and CAT activities were more severe at 20/35 than at 35/20°C. These results suggest that high soil temperature caused more severe oxidative damage to leaves than high air temperature by limiting antioxidant activities and inducing lipid peroxidation. This oxidative stress was associated with accelerated leaf senescence under high temperature conditions. Maintenance of antioxidant activities and low levels of lipid peroxidation was related to the better tolerance of creeping bentgrass to high soil temperature stress imposed on roots or high air temperature on shoots.

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The Influence of Root Temperature on Apple Trees. IV. The Effect on the Mineral Nutrition of the Tree

Cited by 17 publications

References 8 publications

Review: Characterization and Impact of Supraoptimal Root-zone Temperatures in Container-grown Plants

Review: Characterization and Impact of Supraoptimal Root-zone Temperatures in Container-grown Plants

Effects of foliar application of nitrogen on the photosynthetic performance and growth of two fescue cultivars under heat stress

Supraoptimal Soil Temperatures Induced Oxidative Stress in Leaves of Creeping Bentgrass Cultivars Differing in Heat Tolerance

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