apoplastic
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Apoplast — Within a plant, the apoplast is the free diffusional space outside the plasma membrane. It is interrupted by the Casparian strip in roots, air spaces between plant cells and the cuticula of the plant.Structurally, the apoplast is formed by the… … Wikipedia
Phloem — Cross section of a flax plant stem: 1. Pith, 2. Protoxylem, 3. Xylem I, 4. Phloem I, 5. Sclerenchyma (bast fibre), 6. Cortex, 7. Epidermis In vascular plants, phloem is the living tissue that carries organic … Wikipedia
Transpiration stream — In plants, the transpiration stream is the uninterrupted stream of water which is taken up by the roots and, via the xylem vessels, transported to the leaves where it will eventually evaporate into the air/apoplast interface of the substomatal… … Wikipedia
Magnesium in biology — Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg2+ ion. It is an essential mineral nutrient for life[1][2][3] and is present in every cell type in every organism. For example, ATP (adenosine… … Wikipedia
Casparian strip — In plant anatomy, the Casparian strip is a band of Cell wall material in the radial and transverse walls of the endodermis, which is chemically different from the rest of the cell wall. It is used to block the passive flow of materials, such as… … Wikipedia
Pressure Flow Hypothesis — The Pressure Flow Hypothesis, also known as the Mass Flow Hypothesis, is the best supported theory to explain the movement of food through the phloem.[1] It was proposed by Ernst Münch, a German plant physiologist in 1930.[2] A high concentration … Wikipedia
Suberina — La suberina es un polímero natural (biopolímero) producido por las paredes celulares de algunas células de las plantas y que es pobremente comprendido. Al igual que la cutina, la suberina es formada por ácidos grasos hidróxidos y epóxidos unidos… … Wikipedia Español
Apoplasto — El apoplasto es un espacio extracelular periférico al plasmalema de las células vegetales por el que fluyen agua y otras sustancias; este transporte se dice que se realiza por la vía del apoplasto.[1] En las raíces llega a representar un 10% de… … Wikipedia Español
