Premium
The Effect of Gravity Compensation on Growth and Cell Wall‐loosening Enzymes in Helianthus annuus Hypocotyls
Author(s) -
BARA METIN,
GORDON SOLON A.
Publication year - 1972
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1972.tb03614.x
Subject(s) - hypocotyl , elongation , clinostat , helianthus annuus , cellulase , glucanase , helianthus , auxin , gibberellin , enzyme , chemistry , substrate (aquarium) , biochemistry , botany , biophysics , biology , horticulture , sunflower , materials science , ultimate tensile strength , ecology , gene , metallurgy
The effect of gravity compensation by the clinostat on the elongation, weight, and activity of two cell wall‐loosening enzymes (cellulase and β‐1,3‐glucanase) in Helianthus annuus hypocotyls was examined. Gravity compensation increases elongation (28.1 %) and weight (18.3 %). The activity of cellulase extracted from the apical sections is raised, but there is no significant effect on β‐1,3‐glucanase. The relationship between gravity compensation, changes in auxin level, and function of these two enzymes in respect to elongation is discussed.