ZfN: Search Results

1	Author	ChandraK. Kokate, SamirS. Radwan	Requires cookie*
	Title	Enrichment of Solanum khasianum Callus Ge nerating Rootlets with Steroidal Glycoalkaloids
	Abstract	Undifferentiated callus cultures o f Solanum khasianum contain only traces o f steroidal glycoalkaloids, whereas cul tures which have just started to generate rootlets contain these com pounds at a level o f up to 5.2% o f the dry weight. Only 0.34% steroidal glycoalkaloids occur in the seeds; they consist predom inantly o f solasonine and solanidine as well as traces o f an unidentified com pound. Conversely, steroi dal glycoalkaloids from tissue cultures starting organogene sis contain the unidentified com pound as a major fraction, in addition to small am ounts o f solasonine and solanidine.
	Reference	Z. Naturforsch. 34c, 634—636 (1979); received February 19/ April 12 1979
	Published	1979
	Keywords	Solanum khasianum, Callus Cultures, Organogenesis, Ste roidal G lycoalkaloids
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	TEI-XML for	default:Reihe_C/34/ZNC-1979-34c-0634_n.pdf
	Identifier	ZNC-1979-34c-0634_n
	Volume	34

2	Author	Jonathan Gressel	Requires cookie*
	Title	A Review of the Place of in vitro Cell Culture Systems in Studies of Action, Metabolism and Resistance of Biocides Affecting Photosynthesis
	Abstract	The hom ogeneity, density and axenic nature of cell culture system s have made them an am e nable tool for studying many aspects of biocide research; screening, m etabolism , m ode of action and resistance. Cell cultures are "m ulti-hom ogeneous" and each hom ogeneous state may be analog ous to different plant parts. Cultures can be hom ogeneously green, hom ogeneously w hite in either a hom ogeneously exponential or stationary phase of growth. Exam ples are be presented showing why no sin gle hom ogeneous state should be envisaged to be analogous to a whole plant in biocide studies. Because of the possibility of more uniform herbicide application, culture systems have a use in isolatin g resistant crop strains, at higher selection pressures and much higher "p lan t" densities than is possib le in the field, with recent successes. Protoplast fusion techniques may allow the transfer of gen etic resistance between related but genetically incom patible crop species.
	Reference	Z. Naturforsch. 34c, 905—913 (1979); received M ay 24 1979
	Published	1979
	Keywords	Callus Cultures, Suspension Cultures, H erbicide Action, H erbicide M etabolism, H erbicide R esistance
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	TEI-XML for	default:Reihe_C/34/ZNC-1979-34c-0905.pdf
	Identifier	ZNC-1979-34c-0905
	Volume	34

3	Author	Hamako Obata-Sasamoto, Atsushi Komamine, Koshi Saito	Requires cookie*
	Title	Biosynthesis of 3-Carboxy-6,7-dihydroxy-l, 2,3,4-tetra- hydroisoquinoline and l-Methyl-3-carboxy-6,7-dihydroxy-l, 2,3,4- tetrahydroisoquinoline in a Callus Culture of Stizolobium hassjoo
	Abstract	dl-[/?-14C] 3,4-Dihydroxyphenylalanine (DOPA), [2-14C]pyruvate and [2-14C]acetate were ad ministered to a callus culture o f S. hassjoo and incorporation of the radioactivity into 3-carboxy-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline (I) and l-methyl-3-carboxy-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline (II) was examined. Incorporation of radioactivity from labelled DOPA into I and II, and from acetate into I were observed, while that from pyruvate into I and II and from acetate into II were hardly detected. The biosynthetic pathways o f I and D were discussed.
	Reference	Z. Naturforsch. 36c, 921 (1981); received August 21 1981
	Published	1981
	Keywords	Stizolobium hassjoo, Biosynthesis, 3-Carboxy-6, 7-dihydroxy-1, 2, 3, 4-tetrahydroisoquinoline, 1 -Methyl-3-carboxy-6, 7-dihydroxy-1, 2, 3, 4-tetrahydroisoquinoline, Callus Culture
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	TEI-XML for	default:Reihe_C/36/ZNC-1981-36c-0921.pdf
	Identifier	ZNC-1981-36c-0921
	Volume	36