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New species magnoliaceae

Nan-Nan Li, Masanori J Toda, Zhao Fu, Ji-Min Chen, Su-Hua Li, Jian-Jun Gao
Species of the genus Colocasiomyia de Meijere feed/breed on inflorescences/infructescences of the plants from the families Araceae, Arecaceae and Magnoliaceae. Although most of them utilize plants from the subfamily Aroideae of Araceae, three species of the recently established C. gigantea species group make use of plants of the subfamily Monsteroideae. We describe four new species of the gigantea group found from Yunnan, China: Colocasiomyia longifilamentata Li & Gao, sp. n., C. longivalva Li & Gao, sp. n...
2014: ZooKeys
Maria del Rosario Jacobo-Salcedo, Luis Angel Gonzalez-Espindola, Angel Josabad Alonso-Castro, Marisela del Rocio Gonzalez-Martinez, Fabiola Domínguez, Alejandro Garcia-Carranca
Multi-drug resistance is of great concern for public health worldwide and necessitates the search for new antimicrobials from sources such as plants. Several Magnolia (Magnoliaceae) species have been reported to exert antimicrobial effects on sensitive and multidrug-resistant microorganisms. However, the antimicrobial properties of Magnolia dealbata have not been experimentally evaluated. The antimicrobial effects of an ethanol extract of Magnolia dealbata seeds (MDE) and its active compounds honokiol (HK) and magnolol (MG) were tested against the phytopathogen Clavibacter michiganensis subsp...
August 2011: Natural Product Communications
Fumihiko Sato, Takayuki Inui, Tomoya Takemura
Higher plants produce diverse classes of metabolites. Metabolic engineering offers tremendous potential to improve the production and quality of these chemicals. This report summarizes the possibility of using metabolic engineering in benzylisoquinoline alkaloid biosynthesis. Benzylisoquinoline alkaloids, such as morphine, sanguinarine, and berberine, are synthesized from tyrosine via reticuline in Magnoliaceae, Ranunculaceae, Berberidaceae, Papaveraceae, and many other species. The early pathway from tyrosine to reticuline is common among many plant species, whereas there is more diversity in late pathways...
August 2007: Current Pharmaceutical Biotechnology
Linjun Hong, Guohong Li, Wei Zhou, Xinbiao Wang, Keqin Zhang
The ethanolic extracts from 30 plant species were tested for their nematicidal activity against nematodes Bursaphelenchus xylophilus (Steiner & Buhrer) Nickle and Panagrellus redivivus (L.) Goodey. The leaf extract of Magnolia grandiflora L. exhibited the strongest nematicidal activity against both nematodes, causing 73 and 100% mortality respectively within 48 h at 5 mg mL(-1). A new nematicidal sesquiterpene was obtained from the leaves of M. grandiflora. The compound was determined to be 4,5-epoxy-1(10)E,11(13)-germacradien-12,6-olide, based on spectroscopic methods including 2D NMR techniques...
March 2007: Pest Management Science
S Kim, C W Park, Y D Kim, Y Suh
The ndhF sequences of 99 taxa, representing all sections in extant Magnoliaceae, were analyzed to address phylogenetic questions in the family. Magnolia macrophylla and M. dealbata, North American species of Magnolia section Rytidospermum, are placed at the base in the subfamily Magnolioideae although its supporting value is low. In the remaining taxa, several distinctive lineages are recognized: (1) Magnolia, the biggest genus in the family, is not monophyletic; (2) Michelia, including section Maingola of Magnolia subgenus Magnolia, is closely related with Elmerrillia and sections Alcimandra and Aromadendron of Magnolia subgenus Magnolia; (3) the associates of Michelia are grouped with Magnolia subgenus Yulania and section Gynopodium of Magnolia subgenus Magnolia; (4) Pachylarnax forms a clade with sections Manglietiastrum and Gynopodium of Magnolia; (5) a well-supported Manglietia clade is recognized; (6) Caribbean species of section Theorhodon of Magnolia subgenus Magnolia, which are section Splendentes sensu Vázquez-Garcia, are closely allied with New World members of Magnolia subgenus Talauma; and (7) section Rytidospermum of Magnolia subgenus Magnolia and subgenus Talauma are polyphyletic...
April 2001: American Journal of Botany
W Z Song, J F Cui, G D Zhang
Data from a survey of the drug market and investigation of the original plant of "Tu-hou-po", after careful botanical examinations, showed that the drugs were derived from 5 species of the genus Manglietia of Magnoliaceae, viz. Manglietia chingii Dandy, M. insignis (Wall.) Bl., M. duclouxii Finet et Gagnep., M. yuyuanensis Law and M. szechuanica Hu. Comparisons of the main characteristics of the plants, Tu-hou-po and Hou-po crude drugs and chemical components showed that Manglietia is taxonomically the closest to Magnolia and contained similar components (tab 1-2 and fig 1)...
1989: Yao Xue Xue Bao, Acta Pharmaceutica Sinica
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