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https://hdl.handle.net/2440/78022
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dc.contributor.author | Jusaitis, M. | - |
dc.contributor.author | Paleg, L. | - |
dc.contributor.author | Aspinall, D. | - |
dc.date.issued | 1981 | - |
dc.identifier.citation | Phytochemistry: the international journal of plant chemistry, plant biochemistry and molecular biology, 1981; 20(3):417-423 | - |
dc.identifier.issn | 0031-9422 | - |
dc.identifier.uri | http://hdl.handle.net/2440/78022 | - |
dc.description.abstract | Of the three morphological subunits of Avena sativa stem segments (node, leaf-sheath and internode) examined, internodes constituted the richest source of phospholipids and sterols, yielding almost double the concentration of lipid found in the leaf-sheath. The phospholipid compositions of nodes and internodes were similar, comprising mostly phosphatidylcholine (PC) and phosphatidylethanolamine (PE), with linoleic, linolenic and palmitic acids as the predominant component fatty acids. Leaf-sheath tissue contained mainly PE, with equally high amounts of palmitic, linoleic and linolenic acids. β-Sitosterol and cholesterol were the major 4-desmethylsterols of the internode, while β-sitosterol was predominant in the node and leaf-sheath tissues. The growth temperature of segments prior to isolation produced its major effect on the concentration of stigmasterol, which decreased markedly with temperature. The sitosterol/stigmasterol ratio increased significantly as temperature decreased. Stem segments isolated from plants treated with gibberellic acid (GA3) for 3 weeks, showed a significant reduction in the amounts of 4-desmethyl sterols on a dry wt basis when compared with control segments. However, when stem segments were incubated with GA3 for 20 hr, no change in 4-desmethylsterol composition or concentration was observed, even though significant growth in response to GA3 occurred. © 1981. | - |
dc.description.statementofresponsibility | Manfred Jusaitis, Leslie G. Paleg, Donald Aspinall | - |
dc.language.iso | en | - |
dc.publisher | Pergamon Press | - |
dc.rights | Copyright © 1981 | - |
dc.source.uri | http://dx.doi.org/10.1016/s0031-9422(00)84157-6 | - |
dc.subject | Avena sativa | - |
dc.subject | Gramineae | - |
dc.subject | oat | - |
dc.subject | stem segments | - |
dc.subject | temperature | - |
dc.subject | phospholipids | - |
dc.subject | fatty acids | - |
dc.subject | 4-desmethylsterols | - |
dc.subject | gibberellic acid | - |
dc.title | Effects of temperature and gibberellic acid on 4-desmethylsterol composition of Avena sativa stem segments | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/S0031-9422(00)84157-6 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Jusaitis, M. [0000-0002-0313-9636] | - |
Appears in Collections: | Aurora harvest 4 Earth and Environmental Sciences publications |
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