Use of amino acid analogue-resistant cell lines for selection of Nicotiana sylvestris somatic cell hybrids |
| |
Authors: | D. W. R. White I. K. Vasil |
| |
Affiliation: | (1) Department of Botany, University of Florida, Gainesville, USA;(2) Present address: Grasslands Division Department of Scientific and Industrial Research, Private Bag, Palmerston North, New Zealand |
| |
Abstract: | Summary Nicotiana sylvestris cell lines resistant to the amino acid analogues S-2-aminoethyl-cysteine (AECR), or 5-methyl-tryptophan (5MTR), were isolated in suspension culture. Assuming these resistances to be dominant, we have attempted to determine if such variant cell lines can be used to select double resistant somatic cell hybrids. A total of 1.8 × 104 control calli from mixed AECR and 5MTR protoplasts, and AECR and 5MTR homokaryotic fusions were placed on double analogue selection, but none survived. Eight somatic hybrid calli (0.8%), able to grow without inhibition on the double analogue selection medium, were obtained after AECR + 5MTR protoplast fusion. These were further determined as hybrids on the basis of resistance level, chromosome number, and chlorophyll content, all characteristics differing in the parental cell lines.This study is part of a dissertation by D.W.R.W. in partial fulfillment of the requirements for the Ph. D. degree at the University of Florida |
| |
Keywords: | Nicotiana sylvestris Somatic cell hybridization Amino acid analogue Resistance |
本文献已被 SpringerLink 等数据库收录! |
|