Physiological and Ecological Studies on the Mechanism of Regrowth of Grasses : 1. Changes in respiration of root of orchard grass, Italian ryegrass and Ladino clover by cutting

M, Sakurai; Kumai, Sumio; Hirose, Matasaburo; Sanada, Tadashi

doi:10.1626/jcs.28.311

Japanese journal of crop science

1960

DOI: 10.1626/jcs.28.311

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Physiological and Ecological Studies on the Mechanism of Regrowth of Grasses : 1. Changes in respiration of root of orchard grass, Italian ryegrass and Ladino clover by cutting

Sakurai M¹,

Sumio Kumai²,

Matasaburo Hirose³

et al.

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1963

1981

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Metabolic Priorities With Respect to Growth and Mineral Uptake in Roots of Hordeum, Triticum and Lycopersicon

Crapo

Ketellapper

1981

American J of Botany

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Reduction in the supply of photosynthate to the roots of tomato, barley, and wheat plants was achieved indirectly by lowering the intensity of sunlight striking the foliage of test plants. The decrease in sugar and starch concentrations in the roots was verified by appropriate extraction and colorimetric analysis, and a corresponding reduction in the total respiratory rate of the roots was confirmed using an oxygen tension monitor. Other processes measured directly include the rate of uptake of potassium, the mitotic quotient in the root tip—a measure of growth—and the rate of accumulation of dry matter in the root. The study demonstrated that of the metabolic activities observed, root growth is the process first limited when the supply of photosynthetic fuel is decreased. Root growth was severely inhibited under conditions that did not significantly affect either the active uptake of potassium per gram of root or total respiration per gram of root. With greater restriction of photosynthesis, growth was completely halted while the uptake of potassium was strongly decreased and total respiration was still affected only moderately. As the light intensity is reduced significantly, most of the reduced energy supply in the root appears to be used in support of processes critical to maintenance of the organ and the organism.

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Metabolic Priorities With Respect to Growth and Mineral Uptake in Roots of Hordeum, Triticum and Lycopersicon

Crapo

Ketellapper

1981

American J of Botany

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Responses of individual plants to harvesting

1963

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Physiological and Ecological Studies on the Mechanism of Regrowth of Grasses : 1. Changes in respiration of root of orchard grass, Italian ryegrass and Ladino clover by cutting

Cited by 2 publications

References 0 publications

Metabolic Priorities With Respect to Growth and Mineral Uptake in Roots of Hordeum, Triticum and Lycopersicon

Metabolic Priorities With Respect to Growth and Mineral Uptake in Roots of Hordeum, Triticum and Lycopersicon

Responses of individual plants to harvesting

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