The callus could differentiate into the plantlets on solid culture and into plenty of tubers on liquid shake culture on MS mediums without plant growth hormone.
That were FeSO_4 0.02g/L, MgS0_40.04g/L, initial pH7.0-8.0, inoculation quantity 4% with 50 mL medium in 250mL flask, 180 r/min, 30℃, and culture time 72 h.
The recombination expression vector, pPIC9K-E~(rns), was linearized by Sal 1 and electroporated into P.PastorisGS115. The recombinant plasmid GS115-pPIC9K- E~(rns) was obtained by selected.
Incubation of Trix-Ⅲa for expression was studied. The optimized conditions for induction of Trix-Ⅲ a was: the concentration of the BL21 Ⅲa before induction amounted to OD6000.4-0.6.,37℃,0.2 mM IPTG, incubating 2-3hrs after incubation.
The influence of inorganic phosphate and immobilization on cells of Claviceps purpurea strain 1029/N5 producing ergot peptides in shake culture was examined.
The optimized culture medium and conditions (33° C) gave 0.55 unit of FPase, 188.1 units of xylanase and 3.37 units of β-glucosidase per milliliter of culture filtrate at 144 h of shake culture.
Embryoids were obtained from the pollen callus of grape. Afther they hald developed into young halploid plantlets on the solid culture medium, some epidermal cells of the mesocotyl.hypcotyl, leaf and the apper part of the root dedifferentiated to embryonic state end devided actively From one or two suck cells amulticellulur mass was formed on the surface and then developed into an embryoid which always grew toa plantlet, when slaughed off and cultured.
Hypocotyl segments of aseptic seedlings of sesame were cultured on MS solid medium supplemented with 0. 5 mg. L-1 2,4-D and 1. 0 mg . L-1 KT. Callus was induced and then transferred into MS li-oid medium without 2,4-D and KT. Embryoids were induced by suspension culture. Embryogenesis was observed in the parenchyma around vascular tissue.During the embryoid development, the total content of ZR + ZT and that of ABA were 10 to 50 times higher than that of IAA, and the content of ZR + ZT was negatively correla...
Callus were induced from explants of bulbils of Pinellia ternata Breit on MS medium with IAA 3.0 mg/L +BA0.5mg/L The milky callus induced from bulbils grown quickly. The callus could differentiate into the plantlets on solid culture and into plenty of tubers on liquid shake culture on MS mediums without plant growth hormone. The survival rate of transplanted plantlet was 92% The germination capacity of transplanted tubers was 54.3%