| activity of an essential oil derived from chenopodium ambrosioides on greenhouse insect pests. | this study involved both greenhouse and laboratory experiments evaluating the effect of an essential oil product (qrd 400) derived from chenopodium ambrosioides variety nr. ambrosioides l. (chenopodiaceae) on greenhouse insect pests that feed on different plant parts: citrus mealybug, planococcus citri (risso); longtailed mealybug, pseudococcus longispinus (targioni tozzetti); western flower thrips, frankliniella occidentalis (pergande), and fungus gnats (bradysia spp.). treatments were applied ... | 2007 | 17461071 |
| effect of commercially available plant-derived essential oil products on arthropod pests. | plant-derived essential oil products, in general, are considered minimum-risk pesticides and are exempt from environmental protection agency registration under section 25(b) of the federal insecticide fungicide and rodenticide act. however, many of the plant-derived essential products available to consumers (homeowners) have not been judiciously evaluated for both efficacy and plant safety. in fact, numerous plant-derived essential oil products labeled for control of arthropod pests have not bee ... | 2009 | 19736770 |
| nucleotide sequence of the original brazilian isolate of coleus yellow viroid from solenostemon scutellarioides and infectivity of its complementary dna. | the complete nucleotide (nt) sequence of the original coleus yellow viroid (cyvd) from solenostemon scutellarioides, 'golden bedder', has been determined. the covalently closed single-stranded cyvd rna molecule consists of 248 nt residues which assumes a rod-like secondary structure when folded in the model of lowest free energy. the sequence was determined by direct sequencing of rna and from three overlapping cdna clones. comparison of the cyvd sequence with that of coleus blumei viroid 1 (cbv ... | 1994 | 8207408 |
| distinct substrate specificities and unusual substrate flexibilities of two hydroxycinnamoyltransferases, rosmarinic acid synthase and hydroxycinnamoyl-coa:shikimate hydroxycinnamoyl-transferase, from coleus blumei benth. | cdnas and genes encoding a hydroxycinnamoyl-coa:hydroxyphenyllactate hydroxycinnamoyltransferase (cbras; rosmarinic acid synthase) and a hydroxycinnamoyl-coa:shikimate hydroxycinnamoyltransferase (cbhst) were isolated from coleus blumei benth. (syn. solenostemon scutellarioides (l.) codd; lamiaceae). the proteins were expressed in e. coli and the substrate specificity of both enzymes was tested. cbras accepted several coa-activated phenylpropenoic acids as donor substrates and d-(hydroxy)phenyll ... | 2011 | 21318289 |
| ectopic expression of the coleus r2r3 myb-type proanthocyanidin regulator gene ssmyb3 alters the flower color in transgenic tobacco. | proanthocyanidins (pas) play an important role in plant disease defense and have beneficial effects on human health. we isolated and characterized a novel r2r3 myb-type pa-regulator ssmyb3 from a well-known ornamental plant, coleus (solenostemon scutellarioides), to study the molecular regulation of pas and to engineer pas biosynthesis. the expression level of ssmyb3 was correlated with condensed tannins contents in various coleus tissues and was induced by wounding and light. a complementation ... | 2015 | 26448466 |
| specific leaf mass, fresh: dry weight ratio, sugar and protein contents in species of lamiaceae from different light environments. | samples from eleven species of lamiaceae were collected from different light environments in venezuela for laboratory analysis. the studied species were: plectranthus scutellarioides (ps), scutellaria purpurascens (sp), hyptis pectinata (hp)), h. sinuata (hs). leonorus japonicus (lj), plecthranthus amboinicus (pa) ocimum hasilicum (ocb), o. campechianum (occ) origanum majorana (orm), rosmarinus officinali, (ro) and salvia officinalis (so). protein and soluble sugar contents per unit of area were ... | 2007 | 17354417 |