Mineral Nutrition in Plants I. When one tugs at a single thing in nature, (s)he finds it attached to the rest of the world. John Muir. Oplopanax horridus Devils Club. Ethnobotany, Medicinal uses, Sacred uses, herbalgram.org Modern uses, Empirical studies, NCBI . NPR.
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Mineral Nutrition in Plants I
When one tugs at a single thing in nature, (s)he finds it attached to the rest of the world.
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 2: 619.
…prelude to Chapter 37 (old edition), Campbell and Reece.
…growth and development are a plant’s version of locomotion,
Programmed Cell Death
H2O or CO2
See Table 38.1
Use for reference, but we’ll organize the nutrients according to biochemical function.
Group 1. Nutrients that are part of carbon compounds.
Group 2. Nutrients that are important in energy storage or structural integrity.
Group 3. Nutrients that remain in ionic form.
Group 4. Nutrients that are involved in redox reactions.
Plants assimilate these nutrients via biochemical reactions involving oxidation and reduction.
Transport in the xylem sap to leaves.
Some assimilation into cysteine in the root,
Secondary Active Transport
Metal ions or toxins
Accumulation in harvestable shoot tissue.
11 different sugar monomers,
> 21 enzymes required for synthesis.
Difficult in Soils
Mineral deficiencies are relatively easy to identify in controlled conditions.
Nutrients classified based on their tendency to re-translocate during deficiencies.
1. K+ is transported across the root cell plasma membrane,
2. K+ is transported from the root symplast to the xylem,
3. K+ is transported via xylem sap to the older leaves,
- or, K+diffuses into, or out of the phloem.
5. Moves in source-sink direction.
Means for using excess carbohydrates.
Width of bar corresponds to relative availability