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Long-term Acid-induced Wall Extension in an In-vitro System by R. E. Cleland; D. Cosgrove; M. Tepfer is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Long-term Acid-induced Wall Extension in an In-vitro System about?

When frozen-thawed Avena sativa L. coleoptile and Cucumis sativa L. hypocotyl sections, under tension, are acid-treated, they undergo rapid elongation (acid-extension). The acid-extension response consists of two concurrent phases: a burst of extension which decays exponentially over 1-2 h (ExE), and a constant rate of extension (CE) which can persist for at least 6 h. The extension (AL) is closely represented by the equation: ΔL = a - a · e (kt) + c · t where a is the total extension of the exponential phase, k is the rate constant for ExE, and c is the rate of linear extension (CE). Low pH and high tension increased a and c, whereas temperature influenced k. The magnitude of the CE (over 50% extension/10 h), the similarity in its time course to auxin-induced growth, and the apparent yield threshold for CE indicate that CE is more likely than ExE to be the type of extension which cell walls undergo during normal auxin-induced growth.

Who reads Long-term Acid-induced Wall Extension in an In-vitro System?

Author

R. E. Cleland; D. Cosgrove; M. Tepfer

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0032-0935)

Published

1987

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)