Search results for "Sideritis"
showing 10 items of 35 documents
Isolation, culture and plant regeneration from protoplasts of Sideritis angustifolia
1998
Summary Factors promoting high yields of viable protoplasts from leaves of Sideritis angustifolia are reported. Isolated protoplasts divided and gave rise to callus when plated in modified liquid MS medium with growth regulators. Best plating efficiency was obtained when protoplast were cultured in the presence of 6 μM BA and 2 μM NAA. Calli were then transferred onto solidified regeneration media. Adventitious bud differentiation was only observed in calli grown on medium containing 8 μM BA and 2 μM NAA. These buds proliferated quickly when placed on hormone-free medium and subsequendy regenerated new buds and shoots. Once developed shoots were excised, the remaining tissues maintained thi…
Novedades taxonómicas y nomenclaturales para la flora valenciana, II
2010
Continuando con la actualización taxonómica y nomenclatural de la flora valenciana, se proponen diez combinaciones nuevas y un nombre nuevo para táxones y nototáxones que crecen en el Mediterráneo occidental. Además, se designa un epitipo para Sideritis × angustifolia Lag., híbrido sobre cuya identidad ha existido gran controversia, y un lectotipo para Globularia linifolia Lam. Del mismo modo, se discute la citación correcta del lugar y fecha de publicación de cuatro táxones más. Taxonomic and nomenclatural novelties concerning the Valencian flora (eastern Spain), II: As a part of the taxonomical and nomenclatural update of vascular flora of the Valencian Community, ten new combinations and…
Regeneration of Sideritis angustifolia (Labiatae) Plants from Single Cell Cultures
1988
Summary Mechanically isolated cells from hypocotyl-derived calli of Sideritis angustifolia Lag. were inoculated on agar-solidified Murashige and Skoog (MS) nutrient medium containing CH and different concentrations and combinations of NAA and BA. Isolated cells underwent continued divisions giving rise to calli after 30 days of culture. Best results were obtained when medium was supplemented with 0.5 μM NAA and 4.4 or 8.8 μM BA or with 5 μM NAA and 4.4μM BA. Calli obtained in the presence of 0.5 μM NAA and 8.8 μM BA regenerated shoot-buds when transferred to MS medium without CH and supplemented or not with these growth regulators. Once shoots were excised, the calli maintained their morpho…
Chromosome numbers of severalLamiaceae from Spain
1998
Chromosome numbers of twenty taxa, almost all of them Iberian endemics, of the generaTeucrium, Sideritis, Thymus andSalvia are reported. New chromosome numbers are given for the following taxa:Teucrium homotrichum (2n=78),T. hifacense (2n=26),T. rivasii (2n=26),T. rivas-martinezii (2n=26),Sideritis edetana (2n=30),S. murgetana subsp.littoralis (2n=28), and the hybridS. xviciosoi (2n=27). The first count on Iberian material forSalvia pratensis (2n=18) is reported. Chromosome numbers have been confirmed for the rest of the taxa studied on material from SE Spain. Karyotype analyses and taxonomic remarks are included.
Ucriol, an epoxy-diterpene from Sideritis syriaca
1983
Abstract The isolation of a new epoxy-diterpene from the inflorescence of Sideritis syriaca (S. sicula Ucria) is described. Its structure and stereochemistry were established by spectroscopy and partial synthesis.
Potential allelopathic activity ofSideritis italica(Miller) Greuter et Burdet essential oil
2011
Sideritis italica (Miller) Greuter et Burdet is a widespread Mediterranean Lamiacea. Essential oils from S. italica flowerheads and leaves were extracted by hydrodistillation and then tested for their potential allelopathic activity against Raphanus sativus L. (Magnoliophyta) and the moss Tortula muralis (Hedw.) (Bryophyta), two organisms already tested for allelopathy, and against two bryophytes growing in the same environment as S. italica: the moss Bryum capillare Hedw. and the liverwort Lunularia cruciata (L.) Dum. For R. sativus, we considered seed germination and root and epicotyl growth. For the mosses, we used spore germination and protonemata development, while for the liverwort, w…
An ent-kaurane from Sideritis huber-morathii
1996
WOS: A1996VW86500030
The diterpenoids from the genus Sideritis
2006
ABSTRACT: The genus Sideritis consists of 100-150 or more species, growing mainly in the countries around the Mediterranean area. The genus is particularly rich in diterpenoids, occurring in almost all the species, and shows many different carbon skeleta. Several species are still used in traditional medicine. Recent studies indicated the occurrence of interesting biological activities, like anti-inflammatory, antibacterial, antimicrobial, anti-HIV replication, antifeedant, antiulcerogenic, analgesic, and antihypoglycaemic.
In Vitro Propagation of Sideritis angustifolia Lag.
1987
Summary Hypocotyl, root and cotyledon explants from 30 day old seedlings of Sideritis angustifolia Lag. were cultured on Murashige and Skoog nutrient medium. Organogenesis of roots and shoots was induced with treatments containing BA or KIN in combination with NAA, IAA or 2,4-D, however, those combinations including NAA and BA were optimal. Most regenerated shoots developed roots when transferred to medium without growth regulators. Rooted plantlets were successfully transplanted into soil.
A diterpene, distanol, from Sideritis distans
1989
Abstract A new diterpene, distanol, has been isolated from the petrol extract of the aerial part of Sideritis distans Wild. Its structure stereochemistry has been assigned by spectroscopic methods.