Plant Transport and Nutrition - Plant Biology - Lecture Slides, Slides for Botany and Agronomy. Shree Ram Swarup College of Engineering & Management
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amit_7525 January 2013

Plant Transport and Nutrition - Plant Biology - Lecture Slides, Slides for Botany and Agronomy. Shree Ram Swarup College of Engineering & Management

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Botany is Plant biology. This lecture of plant biology lecture includes: Plant Transport and Nutrition, Water Absorption, Cell Uptake, Water Transport, Bulk Flo, Control of Water Loss, Factors Preventing Transpiration, T...
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Plant nutrition and transport

Plant Transport and Nutrition I. Transport A. General B. Potentials C. Cell uptake II. Soil A. Composition B. Soil formation C. Soil types III. Water absorption IV. Water transport A. Bulk flow B. Transpiration C. Control of water loss D. Factors preventing transpiration V. Translocation through the phloem A. Storage and transport forms of carbohydrates B. Translocation VI. Plant nutrition

7.8

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I. Transport A. General B. Potentials C. Cell uptake

Ψwate = Ψ = 0 MPa Ψ = Ψs + Ψp

Water moves from less negative Ψ to more negative Ψ

Ψs = osmotic potential Ψp = pressure potential

A B

36.2 36.3 Docsity.com

I. Transport

36.4 36.6

Turgor pressure

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II. Soil A. Composition

1. Inorganic matter Rocks and minerals

Air and water 2. Organic matter Living

Dead dynamic equilibrium

air

water 50%

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B. Soil formation

Big chunks into little chunks

Decomposition Rocks and minerals: weathering

End point:

Organic matter end point: humus

sand, silt, and clay

(recalcitrant)

horizons Docsity.com

B. Soil formation Factors: Geology, Climate, Organisms, Topography, Time

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C. Soil types 1. Soil types 2. Soil particles: a. Sand and silt b. Clay c. humus

Particle Size(mm) Shape Feel Charge

Sand

Silt

Clay

Humus

2 – 0.2

.2 - .002

< .002

varies

chunky

chunky

plates

amorphous

gritty

floury

sticky

spongy

inert

inert

ert (-)

ert (+/-)

Cation exchange capacity (CEC) Docsity.com

III. Water and mineral absorption Cation exchange

Examples of minerals absorbed:

Ca2+; Mg2+; K+; P-; N-

37.6 Docsity.com

III. Water and mineral absorption

Plasmodesmata

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IV. Water transport

Tracheids

Vessels

A. Bulk flow

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IV. Water transport

36.8

36.10

Evapotranspiration

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IV. Water transport B. Transpiration

Soil-plant-air continuum (SPAC)

Adhesion-cohesion theory of water transport

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IV. Water transport C. Control of transpiration D. Factors affecting water loss

humidity health soil moisture clay content CEC

36.11 Docsity.com

V. Translocation through the phloem A. Storage and transport forms of carbohydrates

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B. Translocation Source to sink pressure flow theory

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Summary

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VI. Plant nutrition A. Sources B. Macronutrients and micronutrients

Air: CO2 /O2 Soil: H2O /the rest Macronutrients: NPK Micronutrients:

Mg

Nitrogen – vegetative growth Phosphorous – repro growth

Fe Mo

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