Open AccessISOLATION AND CULTURE OF Celosia cristata L. CELL SUSPENSION PROTOPLASTS
Author(s) -
Retno Mastuti,
Hiroshi Miyake,
Takeshi Taniguchi,
Yoji Takeoka
Publication year - 2003
Publication title -
berkala penelitian hayati (journal of biological researchers)/berkala penelitian hayati
Language(s) - English
Resource type - Journals
eISSN - 2337-389X
pISSN - 0852-6834
DOI - 10.23869/bphjbr.9.1.20031
Subject(s) - protoplast , callus , kinetin , cellulase , mannitol , botany , suspension culture , biology , murashige and skoog medium , chemistry , tissue culture , cellulose , cell culture , biochemistry , genetics , in vitro
Developmental competence of Celosia cristata L. cell suspension-derived protoplasts was investigated. The protoplasts were isolated from 3- to 9-d old cultures in enzyme solution containing 2 percent (w/v) Cellulase YC and 0.5 percent (w/v) Macerozyme R-10 which was dissolved in washing solution (0.4 M mannitol and 10 mM CaCl2) at pH 5.6 for 3 hours. The highest number of viable protoplasts was released from 5-d old culture of a homogenous cell suspension. Subsequently, three kinds of protoplast culture media were simultaneously examined with four kinds of concentration of gelling agent. Culturing the protoplasts on KM8p medium solidified with 1.2 percent agarose significantly enhanced plating efficiency as well as microcolony formation. Afterwards, the microcalli actively proliferated into friable watery callus when they were subcultured on MS medium supplemented with 0.3 mg/l 2,4-D and 1.0 mg/l kinetin. Although the plant regeneration from the protoplasts-derived calli has not yet been obtained, the reproducible developmental step from protoplasts to callus in this study may facilitate the establishment of somatic hybridization using C. cristata as one parent.