Carbon Allocation
Mostrando 13-24 de 44 artigos, teses e dissertações.
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13. Análise de crescimento e produtividade de duas variedades de cana-de-açúcar (Saccharum spp) influenciadas por doses de fósforo
The knowledge of the leaf area is required every time the sugarcane is subjected to evaluation in which different varieties are compared or submitted to different environmental conditions, managements or fertilizations, therefore evidently showing alteration in dimensions of the plant leaves, so affecting the photosynthetic process. Although the higher breat
Publicado em: 2007
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14. Crescimento e atividade fotossintetica em duas especies de lianas de uma floresta estacional semidecidual
The lianas are copious in natural and man-made clearings and it appears that these forms of life require high irradiance for development and growth. Lianas are rooted in the soil and use other plants, especially trees as support. Since these plants begin their growth on the forest floor, then ascend to the canopy, they can experience extreme differences in r
Publicado em: 2004
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15. As cumarinas do pterocaulon balansae, Chodat
Starting from an hexane/ethyl ether extract of the aereal parts of Pterocaulon balansae, Chodat, we isolated the five following coumarins: 5-(3 -methyl-2 ,3 -butenyloxy)-6,7-methylenedioxycoumarin; 5-(2 ,3 -epoxy-3 -methylbutyloxy)-6,7-methylenedioxycoumarin; 5-(2 ,3 -dihydroxy-3 -methylbutyloxy)-6,7-methylenedioxycoumarin; 6-methoxy-7-(2 ,3 -epoxy-3 -methyl
Publicado em: 1981
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16. Seasonal Allocation of Photoassimilated Carbon in Douglas Fir Seedlings 1
The uptake of CO2 by Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) seedlings and the allocation of photoassimilated carbon among five vegetative tissues were closely related to seedling phenology. In May, newly flushing needles required 5.2% day−1 of photoassimilated carbon relative to needle tissue carbon. As these needles matured, this carbon requir
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17. Carbon allocation during fruiting in Rubus chamaemorus
Oxford University Press.
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18. Glyphosate Inhibits Photosynthesis and Allocation of Carbon to Starch in Sugar Beet Leaves 1
Application of glyphosate (N-[phosphonomethyl] glycine) to exporting leaves of sugar beet (Beta vulgaris, L.) during the day lowered stomatal conductance and carbon fixation. Allocation of newly fixed carbon to foliar starch accumulation was nearly completely inhibited, being decreased by the same amount as net carbon fixation. In contrast, decreasing net ca
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19. Growth Depression in Mycorrhizal Citrus at High-Phosphorus Supply (Analysis of Carbon Costs).
Mycorrhizal-induced growth depression of plants in high-P soil has been reported in many species. The carbon costs of factors contributing to this growth depression were analyzed in Volkamer lemon (Citrus volkameriana Tan. & Pasq.) colonized by the mycorrhizal (M) fungus Glomus intraradices Schenck and Smith. M and nonmycorrhizal (NM) plants were each grown
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20. Strategies for the Allocation of Resources under Sulfur Limitation in the Green Alga Dunaliella salina
The effect of sulfur limitation on the partitioning of carbon, nitrogen, and sulfur was investigated in Dunaliella salina. D. salina was able to adapt to 6 μm sulfate; under these conditions, the cells showed reduced growth and photosynthetic rates. Whereas intracellular sulfate was depleted, phosphate, nitrate, and ammonium increased. Amino acids showed a
American Society of Plant Physiologists.
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21. Mechanisms of Salinity Tolerance in Plants 1
The mechanisms of salt stress response and tolerance have eluded definition despite reasonable success in defining their physiological manifestations. In this review, we consider the integrated salt metabolism of plants, essentially as a problem in meganutrient physiology. Two critical aspects of cellular and organismal metabolism are given particular attent
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22. Photosynthetic Carbon Metabolism and Translocation in Wild-Type and Starch-Deficient Mutant Nicotiana sylvestris L.
A high rate of daytime export of assimilated carbon from leaves of a starch-deficient mutant tobacco (Nicotiana sylvestris L.) was found to be a key factor that enabled shoots to grow at rates comparable to those in wild-type plants under a 14-h light period. Much of the newly fixed carbon that would be used for starch synthesis in leaves of wild-type plants
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23. Carbon Partitioning during Sucrose Accumulation in Sugarcane Internodal Tissue.
The temporal relationship between sucrose (Suc) accumulation and carbon partitioning was investigated in developing sugarcane internodes. Radiolabeling studies on tissue slices, which contained Suc concentrations ranging from 14 to 42% of the dry mass, indicated that maturation coincided with a redirection of carbon from water-insoluble matter, respiration,
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24. Carbon allocation in wild-type and Glc+ Rhodobacter sphaeroides under photoheterotrophic conditions.
The photosynthetic bacterium Rhodobacter sphaeroides is capable of producing H2 via nitrogenase when grown photoheterotrophically in the absence of N2. By using 14C-labeled malate, it was found that greater than 95% of this substrate was catabolized completely to CO2 during H2 production. About 60% of this catabolism was associated with H2 biosynthesis, whil