title: 1-aminocyclopropane-1-carboxylic Acid concentrations in shoot-forming and non-shoot-forming tobacco callus cultures.
abstract: Shoot-forming tobacco (Nicotiana tabacum var. Wisconsin 38) callus tissues contain significantly lower concentrations of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid compared to non-shoot-forming callus tissues. This difference is evident 1 day after subculture to shoot-forming or non-shoot-forming medium, and is maintained through the first week of growth. The lack of auxin in shoot-forming medium is the probable cause for this difference in ACC concentrations.
authors: Melvin Calvin Laboratory, University of California, Berkeley, California 94708.
authors: K L
authors: KL
authors: Grady
authors: J A
authors: JA
authors: Bassham