Translocation in phloem pdf

phloem transport flow from source to sink
mechanism of phloem transport ppt
translocation in plants ppt
translocation in phloem ppttranslocation in plants definition
mechanism of phloem transport pdf
mechanism of translocation in plants
translocation in plants

Photosynthate (often sucrose) from leaves must be used to nourish non-photosynthetic cells. Active transport occurs in phloem. Phloem cell types: --parenchyma. Oct 8, 2013 - Differentiate between sugar sources and sugar sinks in plant tissues; Explain the pressure flow model for sugar A new theory of translocation is presented in which sucrose transport occurs in two chief modes. The first is base3 on microperistaltic movement of contractilethe need arises (Thorpe et al., 2005). Other phloem functions. Phloem functioning is not limited to translocation of sugars. between sources and sinks, but is also Bidirectional. • Composition. • Mechanism of translocation. • Munch Pressure flow hypothesis. • Phloem loading and unloading. • Source-sink relationships Other organic compounds (metabolites, hormones); some mineral nutrients. Redistributed from. SOURCE SINK. Phloem transport: Sources and sinks. collapsed by the pressure of surrounding phloem parenchyma cells (6, 27). ESAU (29), studying several plants, has noticed that when phloem tissues. 792 Since phloem translocation is confined to sieve elements embedded within a tissue matrix, it is difficult to obtain uncontaminated samples of translocated sap. The Mar 31, 2008 -