naa a22 4500 510745555 CHVBK 20180411083044.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s12228-012-9298-1 doi (NATIONALLICENCE)springer-10.1007/s12228-012-9298-1 Carlquist Sherwin Santa Barbara Botanic Garden, 1212 Mission Canyon Road, 93105, Santa Barbara, CA, USA aut Interxylary phloem: Diversity and functions [Elektronische Daten] [Sherwin Carlquist] Interxylary phloem is here defined as strands or bands of phloem embedded within the secondary xylem of a stem or root of a plant that has a single vascular cambium. In this definition, interxylary phloem differs from intraxylary phloem, bicollateral bundles, pith bundles, and successive cambia. The inclusive but variously applied terms included phloem and internal phloem must be rejected. Histological aspects of interxylary phloem are reviewed and original data are presented. Topics covered include duration of interxylary phloem; relationship in abundance between sieve tubes in external phloem and interxylary phloem; distinctions between interxylary and intraxylary phloem; presence of parenchyma, fibers, and crystals in the interxylary phloem strands; development of cambia within interxylary phloem strands; three-dimensionalization and longevity of phloem, systematic distribution of interxylary phloem; physiological significance; and habital correlations. No single physiological phenomenon seems to explain all instances of interxylary phloem occurrence, but rapidity and volume of photosynthate transport seem implicated in most instances. The New York Botanical Garden, 2013 Bicollateral bundles nationallicence included phloem nationallicence intraxylary phloem nationallicence photosynthate conduction nationallicence successive cambia nationallicence Brittonia Springer US; http://www.springer-ny.com 65/4(2013-12-01), 477-495 0007-196X 65:4<477 2013 65 12228 https://doi.org/10.1007/s12228-012-9298-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12228-012-9298-1 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Carlquist Sherwin Santa Barbara Botanic Garden, 1212 Mission Canyon Road, 93105, Santa Barbara, CA, USA aut NATIONALLICENCE 773 0- Brittonia Springer US; http://www.springer-ny.com 65/4(2013-12-01), 477-495 0007-196X 65:4<477 2013 65 12228 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer