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Plant Nutrient Uptake and Symbiosis

Anatomy and Physiology10 CardsCreated 25 days ago

This deck covers essential concepts of plant nutrient uptake from soils, focusing on root architecture, symbiotic relationships with microorganisms, and the mechanisms of nutrient absorption. It includes details on mycorrhizal associations, nitrogen fixation, and the rhizosphere's role in nutrient acquisition.

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What are the 14 essential mineral nutrients required by plants?

The essential mineral nutrients are nitrogen (N), potassium (K), calcium (Ca), phosphorus (P), magnesium (Mg), sulfur (S), iron (Fe), chlorine (Cl), manganese (Mn), boron (B), zinc (Zn), copper (Cu), molybdenum (Mo), and nickel (Ni).

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Key Terms

Term
Definition
What are the 14 essential mineral nutrients required by plants?
The essential mineral nutrients are nitrogen (N), potassium (K), calcium (Ca), phosphorus (P), magnesium (Mg), sulfur (S), iron (Fe), chlorine (Cl), m...
How do plants typically acquire minerals from the soil?
Plants acquire minerals through roots in association with soil microbes that make minerals more available, rather than taking them up directly from th...
What is the role of root hairs in nutrient uptake?
Root hairs increase the root surface area for nutrient uptake, especially for immobile nutrients like phosphate, by intercepting and accessing them in...
What is mycorrhizal symbiosis?
Mycorrhizal symbiosis is a mutualistic association between plant roots and fungi, where fungi provide the plant with nutrients, especially phosphorus,...
What is the rhizosphere?
The rhizosphere is the narrow zone of soil surrounding plant roots characterized by root exudation and a high concentration of microorganisms, influen...
How do plants adapt their root systems in nutrient-poor soils?
Plants develop dynamic and plastic root systems that proliferate in nutrient-rich zones and minimize growth in deficient areas to maximize nutrient up...

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Plant Nutrient Uptake and Symbiosis
TermDefinition
What are the 14 essential mineral nutrients required by plants?
The essential mineral nutrients are nitrogen (N), potassium (K), calcium (Ca), phosphorus (P), magnesium (Mg), sulfur (S), iron (Fe), chlorine (Cl), manganese (Mn), boron (B), zinc (Zn), copper (Cu), molybdenum (Mo), and nickel (Ni).
How do plants typically acquire minerals from the soil?
Plants acquire minerals through roots in association with soil microbes that make minerals more available, rather than taking them up directly from the soil.
What is the role of root hairs in nutrient uptake?
Root hairs increase the root surface area for nutrient uptake, especially for immobile nutrients like phosphate, by intercepting and accessing them in the soil.
What is mycorrhizal symbiosis?
Mycorrhizal symbiosis is a mutualistic association between plant roots and fungi, where fungi provide the plant with nutrients, especially phosphorus, and receive carbohydrates in return.
What is the rhizosphere?
The rhizosphere is the narrow zone of soil surrounding plant roots characterized by root exudation and a high concentration of microorganisms, influencing nutrient availability and uptake.
How do plants adapt their root systems in nutrient-poor soils?
Plants develop dynamic and plastic root systems that proliferate in nutrient-rich zones and minimize growth in deficient areas to maximize nutrient uptake.
What is symbiotic nitrogen fixation?
Symbiotic nitrogen fixation is a process where nitrogen-fixing bacteria convert atmospheric nitrogen (N2) into ammonia (NH3), which plants can use, in exchange for carbohydrates from the plant.
What are cluster roots?
Cluster roots are dense clusters of rootlets that increase surface area for nutrient uptake, particularly in nutrient-poor soils, and are common in plants like those in the Proteaceae family.
What is the significance of the Haber-Bosch process?
The Haber-Bosch process is an industrial method to synthesize ammonia from atmospheric nitrogen, requiring high temperatures and pressures, and is crucial for producing nitrogen fertilizers.
What is the function of the enzyme urease in plants?
Urease breaks down urea into ammonia and carbon dioxide, facilitating nitrogen recycling in plants, and contains a nickel active site essential for its function.