Results 111 to 120 of about 770 (150)

Transgenic Flaveria bidentis

2001
C4 plants are a group of relatively recently evolved angiosperms which are represented in a large number of both monocot and dicot genera (see Hatch 1987, 1992). C4 plants are of agricultural importance not only because they are strongly represented among tropical and subtropical crop species (maize, sorghum, sugarcane, and amaranth, for example, are ...
R. T. Furbank, J. A. Chitty, W. C. Taylor   +2 more
openaire   +1 more source

Enzymatic synthesis of sulphated flavonols in Flaveria

Phytochemistry, 1986
Abstract Cell-free extracts of Flaveria bidentis and F. chloraefolia catalysed the transfer of sulphate groups from 3′-phosphoadenosine-5′-phosphosulphate to the hydroxyl groups of a variety of hydroxylated and O -methylated flavonols, but not to flavones or phenylpropanoids. Enzymatic sulphation was more predominant at the 3-hydroxyl group, but
Luc Varin, Denis Barront, Ragai K. Ibrahim   +2 more
openaire   +1 more source

Chemotaxonomic features in Argentinian species of Flaveria (Compositae)

Biochemical Systematics and Ecology, 1999
Abstract The presence of thiophene derivatives in Flaveria bidentis and Flaveria bidentis var. angustifolia has been investigated to expand on the existing chemical information on both taxa. Alpha-terthienyl and 5- (3-buten-1-ynyl)- 2,2′-bithienyl were found in the roots and aerial parts of F. bidentis, whereas in F. bidentis var.
Alicia Mariel Agnese, Susana Nuñez Montoya, Luis Ariza Espinar, José Luis Cabrera   +3 more
openaire   +1 more source

Evidence for the Hybrid Origin of Flaveria latifolia (Compositae)

Brittonia, 1968
Investigations of natural populations, cytological studies, and comparisons of herbarium specimens have been used to clarify the taxonomy of the Florida species ofFlaveria. These studies indicate thatF. latifolia is a hybrid betweenF. linearis andF. floridana.
Robert W. Long, Ernest L. Rhamstine
openaire   +1 more source

Ombuin 3-sulphate from Flaveria chloraefolia

Phytochemistry, 1988
Abstract One novel flavonoid sulphate ester and two known non-sulphated flavonoids were isolated from the leaves of Flaveria chloraefolia . The novel sulphated conjugate is 7,4′-dimethylquercetin (ombuin) 3-sulphate, and the known compounds are 6-methoxyquercetin and its 3-glucoside.
Denis Barron, Ragai K. Ibrahim
openaire   +1 more source

Photosynthesis in Species of Flaveria CO2 Compensation Concentration, O2 Influence on Photosynthetic Gas Exchange and δ13C Values in Species of Flaveria (Asteraceae)

Biochemie und Physiologie der Pflanzen, 1981
Summary Measurements of photosynthetic gas exchange and its 02-dependence as well as (j13C values in species of the genus Flaveria validate the earlier statement of POWELL (1978) that in this genus both C3 and C4 species exist. Furthermore, gas exchange phenomena indicate that at least two of these species (F. anomala and F.
P. Apel, I. Maass
openaire   +1 more source

Inheritance of Carbon Isotope Discrimination in Flaveria

1987
The carbon isotope composition of vascular plants is often used as a primary criterion for distingushing between plants with the C3 and C4 pathways of photosynthetic carbon fixation. In general, C3 plants discriminate more against 13C than C4 plants. The carbon isotope composition, expressed on the standard δ 13C scale, of C3 plants is typically -28 o ...
Dennis Keefe, Laurens Mets
openaire   +1 more source

Change in expression levels of NAD kinase-encoding genes in Flaveria species

Journal of Plant Physiology, 2021
Nicotinamide adenine dinucleotides (NAD(H)) and NAD phosphates (NADP(H)) are electron carriers involved in redox reactions and metabolic processes in all organisms. NAD kinase (NADK) is the only enzyme that phosphorylates NAD+ into NADP+, using ATP as a phosphate donor.
Masami Tanaka, Yuuma Ishikawa, Sayaka Suzuki, Takako Ogawa, Yukimi Y. Taniguchi, Atsuko Miyagi, Toshiki Ishikawa, Masatoshi Yamaguchi, Yuri N. Munekage, Maki Kawai-Yamada   +9 more
openaire   +2 more sources

6-Methoxyflavonol 3-monosulphates from Flaveria chloraefolia

Phytochemistry, 1987
Abstract Flaveria chloraefolia leaves contain three novel 3-sulphates of 6-methoxykaempferol, spinacetin and eupalitin, together with the previously identified 3-sulphates of eupatolitin and eupatin. Purification of these compounds was carried out by gel filtration and chromatography of their tetrabutylammonium derivatives on polyamide and ...
Denís Barron, Ragai K. Ibrahim
openaire   +1 more source

Patuletin-3-O-β-glucosid in Flaveria Arten

Phytochemistry, 1971
Zusammenfassung Patuletin-3-O-β-glucosid wurde zum dritten Mal in der Natur in zwei Flaveria Arten gefunden.
H. Wagner, M.A. Iyengar, L. Hörhammer, W. Herz   +3 more
openaire   +1 more source