Category: P
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Pink pigmented facultative methylotroph (PPFM)
A type of bacteria that is naturally present in virtually all plants. PPFM produces cytokinin, which aids the cell division (growth) process in plants. PPFM also produces a chemical substance similar to vitamin B-12. In 1996, Joe Polacco discovered that impregnation of aged seeds with PPFM improved the germination (sprouting) rate of those aged seeds.…
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Picorna
A family of the smallest known viruses. The viruses of this family are a cause of the common cold and Hepatitis A in humans, one form of foot and mouth disease in animals, and at least one disease in corn (maize). In 1994, Dr. Asim Dasgupta discovered a cellular molecule within ordinary backer’s yeast that…
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Picogram (pg)
10-¹² gram or 3.527 x 10-14 ounce (avoirdupoir).
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Phytoplankton
Algae that are floating or freely suspended in the water.
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Phytophthora root rot
A plant disease that is caused by phytophthora fungus (Phytophthora sojae). Some soybean varieties are genetically resistant to as many as twenty-one races/strains of phytophthora fungus.
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Phytochrome
A protein plant pigment that serves to direct the course of plant growth and development and differentiation in a plant. The response is independent of photosynthesis, e.g., in the photoperiod (i.e., length of light period) response.
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Phytate
A chemical complex (large molecule) substance that is the dominant (i.e., 60% to 80%) chemical form of phosphorus within cereal grains, oil-seeds, and their byproducts. Monogastric animals (e.g., swine) cannot digest and utilize the phosphorus within phytate, because they lack the enzyme known as phytase in their digestive system, so that phosphorus (phytate) is excreted…
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Physical map (of genome)
A diagram showing the linear order of genes or genetic markers on the genome, with units indicating the actual distance between the genes or markers.
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Phylogenetic constraint
The limitations inherent in an organism as a result of what its ancestors were. For example, a horse will never fly and an ape will never speak, because the ancestors of neither possessed those capabilities.
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Photosynthetic phosphorylation
The formation of ATP from the starting compounds ADP and inorganic phosphate (?,). The formation is coupled to light-dependent electron flow in photosynthetic organisms.