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6. Correlations between Nitrate Reduction, Protein Synthesis and Malate Accumulation.

Author

Ben-Zioni, Aliza, Vaadia, Y., and Lips, S. Herman

Subjects
*NITRATES, *NITROGEN compounds, *PROTEIN synthesis, *MALATE dehydrogenase, *PLANT shoots, *PLANT physiology
Abstract

The reduction of nitrate in leaves establishes an `excess' of cations in the tissue which is rapidly neutralized by the synthesis of malate. Malate synthesized in nitrate-depleted leaves accumulates while malate synthesized in nitrate-depleted leaves disappears gradually. The levels of nitrate reductase and malate synthesis change similarly during leaf growth. Good correlation was also found between the rate of protein synthesis and the rate of malate synthesis. Stoichiometric relation between the amount of nitrate reduced and malate accumulated may be observed in short- term experiments. [ABSTRACT FROM AUTHOR]

Published
1970
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8. Plant Water Deficits and Physiological Processes

Author

Vaadia Y, Hagan R M, and Raney F C

Subjects
Agronomy, Turgor pressure, Fresh weight, Mechanical strength, Hydrostatic pressure, Transpiration stream, Environmental science, General Medicine, Biological system
Abstract

The plant component of the soil-plant-atmosphere system is an organized body or structure permeated by water. When we speak of a plant as an organization we refer to evidence of the integrated unity that is apparent throughout its entire phenologic cycle ( 186) . In the view of Needham (1 12) the plant (as a micro-universe) can be con­ sidered as having a number of levels of organization and complexity from the atomic to the whole organism. Laws applying to one level may not apply to other levels. Each level requires its own concepts. Any study of more than one level at a time must involve an attempt to determine the intrinsic rela­ tionships between one level of complexity and the others, and, finally, the organizations perceived at each level of complexity must be integrated. These same considerations should govern our concepts of the relation between the plant and the soil and atmospheric environmental factors affect­ ing its life, with water recognized as a vital factor that is both intrinsic and extrinsic. Water is essential to the life and growth of plants, being a major constituent of living green tissues and often comprising as much as 90 to 95 per cent of the fresh weight. Water provides plants with their mechanical strength through the mechanism of cell turgor, since most vegetative tissues are composed of cells with non-lignified walls. Such plastic bodies become mechanically stable under the influence of the hydrostatic pressure developed by water inside the cell. Water is a raw material in metabolism and in the synthesis reactions that occur in living plants, even though the amounts involved here are rather small compared to the total amount of water that passes through the plant. Large amounts of water move into the roots, through the stem, into the leaves, and out into the atmosphere in the form of vapor, in what is known as the transpiration stream. Growth itself is an expression of cell enlargement brought about by the action of water. Many of the metabolic reactions of plants are conditioned by the degree of hydra­ tion of certain of the reactants or enzymes (23, 185). To understand this complex system we must approach it with the realiza­ tion that it is highly dynamic and composed of many interlocking and inter­ dependent phenomena. One of the most difficult problems encountered in understanding the behavior of water in the soil-plant system arises because observed reactions involving water have to be integrated both over time and through volume (141) .

Published
1961

13. Microbial Interactions

Author

Curl, Elroy A., Truelove, Bryan, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Curl, Elroy A., and Truelove, Bryan

Published
1986
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14. The Structure and Function of Roots

Author

Curl, Elroy A., Truelove, Bryan, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Curl, Elroy A., and Truelove, Bryan

Published
1986
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15. Current Trends and Projected Emphasis

Author

Curl, Elroy A., Truelove, Bryan, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Curl, Elroy A., and Truelove, Bryan

Published
1986
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16. Rhizosphere Populations

Author

Curl, Elroy A., Truelove, Bryan, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Curl, Elroy A., and Truelove, Bryan

Published
1986
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17. Introduction

Author

Curl, Elroy A., Truelove, Bryan, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Curl, Elroy A., and Truelove, Bryan

Published
1986
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18. Rhizosphere Relation to Plant Disease

Author

Curl, Elroy A., Truelove, Bryan, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Curl, Elroy A., and Truelove, Bryan

Published
1986
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19. Root Exudates

Author

Curl, Elroy A., Truelove, Bryan, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Curl, Elroy A., and Truelove, Bryan

Published
1986
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21. Systems of Feeding

Author

Matsushima, John K., Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, and Matsushima, John K.

Published
1979
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22. Business Management

Author

Hanan, Joe J., Holley, Winfred D., Goldsberry, Kenneth L., Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Hanan, Joe J., Holley, Winfred D., and Goldsberry, Kenneth L.

Published
1978
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32. Load Bearing and Soil Loosening Processes

Author

Koolen, Adrianus Jozef, Kuipers, Henderikus, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Koolen, Adrianus Jozef, and Kuipers, Henderikus

Published
1983
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34. Mechanical Behavior of Soil Elements

Author

Koolen, Adrianus Jozef, Kuipers, Henderikus, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Koolen, Adrianus Jozef, and Kuipers, Henderikus

Published
1983
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35. Classification of Feeds

Author

Matsushima, John K., Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, and Matsushima, John K.

Published
1979
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36. Soil Conditions

Author

Koolen, Adrianus Jozef, Kuipers, Henderikus, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Koolen, Adrianus Jozef, and Kuipers, Henderikus

Published
1983
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39. The Theory

Author

Parks, John Rabon, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, and Parks, John Rabon

Published
1982
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40. Growth Response to Controlled Feeding

Author

Parks, John Rabon, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, and Parks, John Rabon

Published
1982
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41. A Stochastic Model of Animal Growth

Author

Parks, John Rabon, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, and Parks, John Rabon

Published
1982
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44. Determining Fertilizer Requirements

Author

Hagin, Josef, Tucker, Billy, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Hagin, Josef, and Tucker, Billy

Published
1982
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46. Introduction

Author

Parks, John Rabon, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, and Parks, John Rabon

Published
1982
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48. Energy, Feeding, and Growth

Author

Parks, John Rabon, Yaron, B., editor, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, and Parks, John Rabon

Published
1982
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49. Introduction

Author

Hagin, Josef, Tucker, Billy, Bommer, D. F. R., editor, Sabey, B. R., editor, Thomas, G. W., editor, Vaadia, Y., editor, Van Vleck, L. D., editor, Hagin, Josef, and Tucker, Billy

Published
1982
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