| dimorphotheca sinuata lipoxygenase: formation of 13-l-hydroperoxy-cis-9,trans- 11-octadecadienoic acid from linoleic acid. | | 1973 | 4736566 |
| pollination: sexual mimicry abounds. | why do plants mimic female insects to attract males for pollination? a new study gives insights into the advantages of sexual mimicry and documents this pollination system for the first time outside the orchid family, in a south african daisy. | 2010 | 21145017 |
| volatile constituents of senecio pterophorus (african daisy) dc. from south africa. | the hydrodistilled essential oils of the leaves of senecio pterophorus collected from three different localities in kwazulu-natal province, south africa have been analyzed by gc and gc/ms. thirteen - eighteen compounds were identified, accounting for over 98% of the total oil composition. the major components of the oils were limonene (10.3 - 32.3%), myrcene (14.4-19.7%), sabinene (13.0-18.0%), alpha-phellandrene (3.4-16.9%) and p-cymene (15.6-16.7%). | 2010 | 21213988 |
| mechanism and stereoselectivity of hdac i inhibition by (r)-9-hydroxystearic acid in colon cancer. | 9-hydroxystearic acid (9-hsa) belongs to the endogenous lipid peroxidation by-products that decrease in tumors, causing as a consequence the loss of one of the control mechanisms on cell division. it acts as a histone deacetylase (hdac, e.c 3.5.1.98) inhibitor, and the interaction of the two enantiomers of 9-hsa with the catalytic site of the enzyme, investigated by using a molecular modelling approach, has been reported to be different. in this work we tested out this prediction by synthesizing ... | 2012 | 22814230 |
| (9r)-9-hydroxystearate-functionalized hydroxyapatite as antiproliferative and cytotoxic agent toward osteosarcoma cells. | the possibility to functionalize calcium phosphates with bioactive agents is a promising strategy to design innovative biomaterials for bone repair able to couple the bioactive properties of the inorganic compounds with the therapeutic effect of the functionalizing agent. the r enantiomer of the 9-hydroxystearic acid, (9r)-9-hsa, produced from dimorphotheca sinuata l. seeds, has proven to act as a natural negative regulator of tumor cell proliferation. on this basis, hydroxyapatite was synthesiz ... | 2016 | 26646551 |
| development of a complex floral trait: the pollinator-attracting petal spots of the beetle daisy, gorteria diffusa (asteraceae). | angiosperms possess a variety of complex floral traits that attract animal pollinators. dark petal spots have evolved independently many times across the angiosperm phylogeny and have been shown to attract insect pollinators from several lineages. here we present new data on the ontogeny and morphological complexity of the elaborate insect-mimicking petal spots of the south african daisy species, gorteria diffusa (asteraceae), commonly known as the beetle daisy, although it is fly-pollinated. us ... | 2009 | 21622334 |
| susceptibility of chrysanthemum and paris daisy varieties to several isolates of fusarium oxysporum f. sp. chrysanthemi. | fusarium oxysporum f.sp. chrysonthemi is a pathogen recently reported in italy on four economically important ornamental crops belonging to the compositae family: chrysanthemum (chrysanthemum morifolium), paris daisy (argyranthemum frutescens), african daisy (osteospermum sp.) and gerbera (gerbera jamesonii). the risk of transmission of the pathogen among these species is high because the hosts are frequently cultivated in the same nursery. the susceptibility of 24 paris daisy and 12 chrysanthem ... | 2009 | 20222547 |
| alpaca plant poisonings: nitrate-nitrite and possible cyanide. | nitrate-nitrite poisoning killed four adult alpacas and induced the abortion of a full-term fetus after access to oaten hay (avena sativa) containing 3.2% kno(3) equivalent in dry matter. necropsy findings were cyanosis, dark-coloured blood, and pulmonary congestion and oedema. aqueous humour from two adults contained 25 mg no(3)/l and that from the fetus contained 10 mg no(3)/l. cyanide poisoning possibly killed two adult wether alpacas that ate a garden-cultivated variety of osteospermum ecklo ... | 2009 | 19245625 |
| dimorphecolic acid is synthesized by the coordinate activities of two divergent delta12-oleic acid desaturases. | dimorphecolic acid (9-oh-18:2delta(10)(trans)(,12)(trans)) is the major fatty acid of seeds of dimorphotheca species. this fatty acid contains structural features that are not typically found in plant fatty acids, including a c-9 hydroxyl group, delta(10),delta(12)-conjugated double bonds, and trans-delta(12) unsaturation. expressed sequence tag analysis was conducted to determine the biosynthetic origin of dimorphecolic acid. cdnas for two divergent forms of delta(12)-oleic acid desaturase, des ... | 2004 | 14718523 |