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Please use this identifier to cite or link to this item: http://dspace.utalca.cl/handle/1950/9395

Title: Anatomical changes of xylem cells in stem of Pinus radiata seedlings exposed to inclination and ethylene
Authors: Ramos, P.
Herrera, R.
Keywords: compression wood
radiata pine
Issue Date: Sep-2013
Citation: BIOLOGIA PLANTARUM Volume: 57 Issue: 3 Pages: 525-530 DOI: 10.1007/s10535-013-0321-5
Abstract: In conifers, relationship between ethylene and the response to inclination are not well understood. The aim of this work was to study the consequence for the application of 2-chloroethyl phosphonic acid (ethephon), compound able to release ethylene, in one-year-old Pinus radiata D. Don seedlings subjected to inclination. In plants exposed to inclination for 15 d, increase in thickness of cell walls, more rounded shape of xylem cells, and accumulation of lignin were observed. Ethephon application accelerated significantly these changes; they can be observed after 5 d of inclination. The quantitative polymerase chain reaction (qPCR) showed up-regulation of transcripts from genes encoding phenylalanine ammonia lyase and cinnamyl alcohol dehydrogenase after inclination and their possible ethylene signal-dependence. As conclusion, morphological changes on stem xylem cells in young seedlings of radiata pine exposed to inclination are similar to those observed in compression wood and they are influenced by ethephon application.
Description: Ramos, P (Ramos, P.)[ 1 ] ; Herrera, R (Herrera, R.)[ 1 ] . Univ Talca, Inst Biol Vegetal & Biotecnol, Talca, Chile
URI: http://dspace.utalca.cl/handle/1950/9395
ISSN: 0006-3134
Appears in Collections:Artículos en publicaciones ISI - Universidad de Talca

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