| Sucrose assimilation during early developmental stages of chicory (Cichorium intybus L.) plants. | |
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MedLine Citation:
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PMID: 11289609 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The activities of enzymes of both sucrose and fructan metabolism were measured in chicory (Cichorium intybus L. cv. Turbo) plants during early vegetative growth. From 21 to 42 d after sowing (phase I), carbohydrates were used for structural growth and sucrose was predominantly cleaved by acid invertase whereas neutral invertase (EC 3.2.1.26) and sucrose synthase (EC 2.4.1.13) activities were low. From 49 to 63 d after sowing (phase II) a cambium formed producing secondary tissues, concomitant with induced sucrose:sucrose 1-fructosyl transferase (1-SST; EC 2.4.1.99) and fructan:fructan-1-fructosyl transferase (EC 2.4.1.100) activities, and fructan synthesis in the roots. Accumulation of 1-SST mRNA occurred at the onset of thickening, indicating that 1-SST is controlled at a transcriptional level. Acid invertase activity gradually increased during phase I and remained high during early phase II. It subsequently decreased. The pattern of invertase mRNA accumulation correlated with the enzyme activities, indicating that acid invertase is controlled at the transcriptional level. Both acid invertase and 1-SST probably contributed to the sink strength in the root at the beginning of phase II. |
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Authors:
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N Druart; J De Roover; W Van den Ende; P Goupil; A Van Laere; S Rambour |
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Publication Detail:
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Type: In Vitro; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Planta Volume: 212 ISSN: 0032-0935 ISO Abbreviation: Planta Publication Date: 2001 Feb |
Date Detail:
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Created Date: 2001-04-05 Completed Date: 2001-07-19 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 1250576 Medline TA: Planta Country: Germany |
Other Details:
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Languages: eng Pagination: 436-43 Citation Subset: IM |
Affiliation:
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Laboratoire de Physiologie et Génétique Moléculaire Végétales, Université des Sciences et Technologies de Lille, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Blotting, Northern Carbon Radioisotopes / metabolism Chicory / cytology, enzymology*, growth & development, metabolism Chromatography, High Pressure Liquid Fructans / metabolism Fructose / metabolism Glucose / metabolism Glucosyltransferases / metabolism Glycoside Hydrolases / metabolism Hexosyltransferases / metabolism Plant Roots / cytology, enzymology, metabolism RNA, Messenger / metabolism Sucrose / metabolism* Trisaccharides / metabolism beta-Fructofuranosidase |
| Chemical | |
Reg. No./Substance:
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0/Carbon Radioisotopes; 0/Fructans; 0/RNA, Messenger; 0/Trisaccharides; 30237-26-4/Fructose; 470-69-9/1-kestose; 50-99-7/Glucose; 57-50-1/Sucrose; EC 2.4.1.-/Glucosyltransferases; EC 2.4.1.-/Hexosyltransferases; EC 2.4.1.13/sucrose synthase; EC 2.4.1.9/inulosucrase; EC 3.2.1.-/Glycoside Hydrolases; EC 3.2.1.26/beta-Fructofuranosidase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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