Plant nutrition and reproduction

Plant nutrition and reproduction - BSC 2011(Dr Song 1 Plant...

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Plant nutrition and reproduction (Chapter 36, 37, 38) Plants need resources Above ground: sunlight and CO2 Below ground: water and minerals Essential elements: required to complete life cycle and produce another generation o Macronutrients: need in large amounts o Micronutrients: need in small quantities o Table 37.1 Photosynthesis: 6 CO 2 + 6H 2 O + Light energy = C 6 H 12 O 6 + 6 O 2 Transport of resources Short-distance o Diffusion and active transport of solutes o Diffusion of water (osmosis) o Compartmental structure of plant cells provide three routes: apoplastic, symplastic, transmembrane Long-distance o Bulk flow: movement of a fluid driven by pressure Solute transport by proton pump In active transport in plant cells, the most important transport proteins are proton pumps, which use energy from ATP to pump protons (H+) out of the cell. Three major pathways of transport Every plant cell is separated from its neighbor by cell walls Apoplastic route: water and solute move along continuum formed by cell walls, extracellular spaces, dead interiors of tracheids and vessels
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This note was uploaded on 09/21/2011 for the course BSC2011C 2011 taught by Professor Fedorka/song during the Spring '11 term at University of Central Florida.

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Plant nutrition and reproduction - BSC 2011(Dr Song 1 Plant...

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