Transport in Plants III: Intracellular Interactions and Transport ProcessesC.R. Stocking, U. Heber The problems associated with the movement of water and solutes throughout the plant body have intrigued students of plants since Malpighi's conclusions in 1675 and 1679 that nutrient sap flows upward and downward in stems through vessels in both wood and bark. Steven Hale's ingenious experiments on the movement of water in plants in 1726 and Hartig's observations of sieve-tube exudation in the mid-19th century set the stage for continued intensive studies on long-range transport in plants. In spite of this interest for more than 200 years in the movement of solutes and water in plants, it has only been within the last 20 to 30 years that extensive research effort has been directed toward a critical evaluation of the interactions among the various cellular organelles. The important roles played by the exchange of metabolites in the control and regulation of cellular processes is now widely recognized, but in most instances poorly understood. |
Contents
Membrane Composition | 3 |
Conclusions | 4 |
Transport of Metabolites between Cytoplasm and the Mitochondrial | 6 |
Copyright | |
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Acetabularia Acta adenine nucleotide algae anucleate aspartate BASSHAM Biochem Biophys bundle sheath cells C4 acids C4 pathway C4 photosynthesis C4 plants Ca2+ Calvin carboxylase carrier Chem chloro chloroplast envelope CO₂ cytoplasm dehydrogenase DHAP dicarboxylates electron endoplasmic reticulum enzymes fixation flux formation glycerate glycine glycolate metabolism glycolate pathway glyoxylate Golgi apparatus gradient HATCH HEBER HELDT inhibition inner membrane intact chloroplasts intracellular isolated chloroplasts KAGAWA labeled leaf light lipid malate MATILE mesophyll mesophyll cells metabolites microbodies mitochondria MORRÉ NADH NADP nuclear nucleus O₂ organelles OSMOND oxaloacetate oxidation oxygen PCR cycle permeability peroxisomes phosphate phosphorylation photorespiration plant cells Plant Physiol plasma membrane plasmalemma plasts Proc proteins pyruvate rat liver reaction ribosomes ribulose RuBP serine shuttle species specific activity spinach chloroplasts starch structure substrate sucrose synthesis thylakoid tissue TOLBERT tonoplast translocator transport ultrastructure uptake vacuolar vacuoles vesicles WALKER ZELITCH