Respiration in Plants

Respiration in Plants

Respiration of Cereal Plants and Grains.*

Respiration in frost-damaged wheat has been observed by us1 to be at a higher level than in normal or sound wheat of the same moisture content. This was believed to be due, in part at least, to the higher percentage of dextrose and other simple carbohydrates in the frozen wheat. It then appeared desirable to determine the effect of sprouting upon the respirat,ion of the grain, to ascertain whet...

Respiration of Mosaic-infected Tobacco Plants.

There has been reported in the literature a number of attempts to observe in vitro the respiration of virus preparations in an effort to detect direct evidence of a valid metabolic activity. EATON (10) studied manometrically the respiration of cultures of Staphylococcus lysed by bacteriophage and found a detectable amount of oxygen absorption and carbon dioxide production. On the other hand, BR...

Study of Respiration in Healthy and Mosaic-infected Tobacco Plants.

Comparatively little investigatioii has been made into the fundamental iiietabolic processes of plant viruses. BRONFENBRENNER and REICHERT (2, 3, 4) were unable to detect any respiration in either viruses or bacteriophages. The isolation of virus, free from plant cells, and in a condition suitable for such experiments, is obviously very difficult. The effect of virus infections on the metabolis...

4 Respiration in Plants Interacting with Pathogens, Pests and Parasitic Plants

Growth and maintenance of plant cells require three basic metabolic ingredients: energy, in the form of adenosine triphosphate (ATP), reducing power, usually in the form of nicotinamide adenine dinucleotide phosphate (NADP; in reduced form, NADPH), and precursor molecules. In a photosynthetic cell in the light, these requirements are met by photosynthesis, while in non-photosynthetic cells, the...