Nutrient influences on leaf photosynthesis

Journal Article · Tue Jan 01 04:00:00 EST 1980 · Plant Physiol.; (United States)

OSTI ID:6539393

Longstreth, D J; Nobel, P S

The net rate of CO/sub 2/ uptake for leaves of Gossypium hirsutum L. was reduced when the plants were grown at low concentrations of NO/sub 3//sup -/, PO/sub 4//sup 2 -/, or K/sup +/. The water vapor conductance was relatively constant for all nutrient levels, indicating little effect on stomatal response. Although leaves under nutrient stress tended to be lower in chlorophyll and thinner, the ratio of mesophyll surface area to leaf area did not change appreciably. Thus, the reduction in CO/sub 2/ uptake rate at low nutrient levels was due to a decrease in the CO/sub 2/ conductance expressed per unit mesophyll cell wall area (g/sub CO/sup cell//sub 2/). The use of g/sub CO//sup cell//sub 2/ and nutrient levels expressed per unit of mesophyll cell wall provides a new means of assessing nutrient effects on CO/sub 2/ uptake of leaves. 14 figures, 1 table.

• Research Organization: Univ. of California, Los Angeles
• OSTI ID: 6539393
• Journal Information: Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 65; ISSN PLPHA
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
550500* -- Metabolism
59 BASIC BIOLOGICAL SCIENCES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLIC ACIDS
CELL CONSTITUENTS
CELL WALL
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
CHLOROPHYLL
COTTON
FLUIDS
FOLIAR UPTAKE
GASES
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
IONS
LEAVES
NITRATES
NITROGEN COMPOUNDS
NUTRIENTS
OPENINGS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHYTOCHROMES
PIGMENTS
PORPHYRINS
POTASSIUM IONS
STOMATA
SYNTHESIS
UPTAKE
VAPORS
WATER VAPOR