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Loss of Tomato Cell Wall Galactan May Involve Reduced Rate of Synthesis

Loss of Tomato Cell Wall Galactan May Involve Reduced Rate of Synthesis Abstract Changes in the galactose content of the noncellulosic polysaccharides of tomato (Mill) fruit cell walls were analyzed under various conditions. On the plant, galactan decreased gradually during fruit growth. As normal fruits ripened, the loss of galactan increased sharply; this was not observed in attached rin fruits beyond the fully mature stage. The ability to produce new wall galactan in vitro was retained in mature fruit tissue but declined with ripening. Normal tomatoes ripening on the plant showed a transient increase in galactan content at the climacteric. It is suggested that the decline in wall galactan is partly due to reduced synthesis in senescing, normal fruits and in detached rin tomatoes. 2 Present address: Horticultural Science Department, North Carolina State University, Raleigh, N. C. 27650. 3 Present address: Department of Horticulture, Colorado State University, Fort Collins, Colo. 80523. 1 This work was supported in part by United States Army Research Office Grant DAAG 29-76-G-0255. This content is only available as a PDF. © 1980 American Society of Plant Biologists This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Physiology Oxford University Press

Loss of Tomato Cell Wall Galactan May Involve Reduced Rate of Synthesis

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References (6)

Publisher
Oxford University Press
Copyright
Copyright © 2021 American Society of Plant Biologists
ISSN
0032-0889
eISSN
1532-2548
DOI
10.1104/pp.66.3.532
Publisher site
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Abstract

Abstract Changes in the galactose content of the noncellulosic polysaccharides of tomato (Mill) fruit cell walls were analyzed under various conditions. On the plant, galactan decreased gradually during fruit growth. As normal fruits ripened, the loss of galactan increased sharply; this was not observed in attached rin fruits beyond the fully mature stage. The ability to produce new wall galactan in vitro was retained in mature fruit tissue but declined with ripening. Normal tomatoes ripening on the plant showed a transient increase in galactan content at the climacteric. It is suggested that the decline in wall galactan is partly due to reduced synthesis in senescing, normal fruits and in detached rin tomatoes. 2 Present address: Horticultural Science Department, North Carolina State University, Raleigh, N. C. 27650. 3 Present address: Department of Horticulture, Colorado State University, Fort Collins, Colo. 80523. 1 This work was supported in part by United States Army Research Office Grant DAAG 29-76-G-0255. This content is only available as a PDF. © 1980 American Society of Plant Biologists This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)

Journal

Plant Physiology – Oxford University Press

Published: Sep 1, 1980

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