title: Effects of experimental hypogravity on peroxidase and cell wall constituents in the dwarf marigold.
abstract: Dwarf Marigolds grown from seed under experimental hypogravity are modified in lignin content, hemicellulose composition, and peroxidase activity. The two conditions used, clinostats and flotation, induced changes differing in magnitude but qualitatively similar. Most responses on clinostats required corrections for vertical axis rotational effects, thus limiting the value of these instruments in free-fall simulation. These findings extend earlier observations suggesting that increased peroxidase and decreased lignin are characteristic of growth under experimental hypogravity.
authors.affiliation: Department of Botany, University of Hawaii, Honolulu, Hawaii 96822, USA.
authors.forename: S
authors.initials: S
authors.lastname: Siegel
authors.forename: T
authors.initials: T
authors.lastname: Speitel
authors.forename: D
authors.initials: D
authors.lastname: Shiraki
authors.forename: J
authors.initials: J
authors.lastname: Fukumoto
mesh_terms: D019659:Asteraceae / Q000166:cytology / Q000201:enzymology / Q000378:metabolism*; D002473:Cell Wall / Q000378:metabolism*; D002482:Cellulose / Q000378:metabolism; D006112:Gravitation; D008031:Lignin / Q000378:metabolism*; D010368:Pectins / Q000378:metabolism; D010544:Peroxidases / Q000378:metabolism*; D018521:Plant Physiological Phenomena; D011134:Polysaccharides / Q000378:metabolism*; D012399:Rotation; D018474:Weightlessness Simulation
chemical_list: D011134:Polysaccharides; C007916:hemicellulose; D010368:Pectins; D002482:Cellulose; D008031:Lignin; D010544:Peroxidases