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Cellulase activity and localization during induced abscission of Coleus blumei (1992)

Baird, Lisa M. ; Reid, Philip D.

Springer

Journal of plant growth regulation 11 (1992), S. 129-134

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ISSN: 1435-8107

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Abstract Treatment with dimethipin (2,3-dihydro-5,6-dimethyl-1,4-dithiin 1,1,4,4 tetroxide) inhibited the increase in cellulase activity and decrease in breakstrength associated with the normal course of abscission in Coleus. Application of the surfactant UBI-1126 (Emery OAL 20 in isopropyl alcohol) increased cellulase activity and accelerated the process of abscission in Coleus expiants within 24 h of application. Cellulase activity was localized histochemically at the electron microscopic level in surfactant-treated tissue. The enzyme activity was localized primarily in the cell wall, middle lamella, and paramural bodies of abscission zone cells.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00194361

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