Ophiorrhiza plants (Family Rubiaceae) are known to produce diverse monoterpenoid indole alkaloids including camptothecin with potent antitumor activity. This review contains a summary of recent chemical studies reported over the past 10 years regarding alkaloids (monoterpenoid indole and tetrahydroisoquinoline alkaloids, and cyclopeptide) in Ophiorrhiza plants. In addition, the alkaloid biosynthetic pathways based on their reported structures were proposed.
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http://dx.doi.org/10.1007/s11418-022-01640-3 | DOI Listing |
Front Plant Sci
December 2024
Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, School of Life Science, Guizhou Normal University, Guiyang, Guizhou, China.
Introduction: Flower color polymorphism is often attributed to selection pressures from Q9 pollinators or other non-pollinator stress factors. Generally, flower color polymorphism demonstrates effective acclimatization linked to either pollinator-mediated selection or pleiotropic effects.
Methods: To test these hypotheses in Ophiorrhiza japonica, we compared pollinator visitation frequencies and plant traits between pink and white morphs in Shibing, a dolomite Karst region recognized as a World Natural Heritage Site.
Front Plant Sci
November 2024
Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Karst Mountainous Areas of Southwestern China, College of Life Science, Guizhou Normal University, Guiyang, China.
Nat Prod Res
November 2024
College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha, China.
There has been no phytochemical or and pharmacological report of the Chinese endemic plant till now. At present, seven structurally diverse compounds were obtained, including six triterpenoids (-) and one anthraquinone (). Interestingly, - furnished three distinct carbon skeletons.
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October 2024
College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China Central South University of Forestry and Technology Changsha China.
, a new species from south-western China and northern Vietnam, is described and illustrated. The new species is characterised by the glabrous surfaces on almost all plant parts, congested inflorescences and broad-ovate to ovate bracts 9-22 × 4-11 mm. It morphologically differs from the closest species, , mainly in most plant parts being glabrous, bracts broad-ovate to ovate, apex acute or sometimes obtuse, corollas inside with a ring of white hairs at the middle and anthers inserted near the middle in long-styled flowers.
View Article and Find Full Text PDF3 Biotech
June 2024
Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, 400085 India.
Unlabelled: Genus has recently emerged as one of the promising sources of Camptothecin (CPT), an antitumour monoterpene indole alkaloid. It possesses CPT in its every part and has a relatively short life span. To determine whether differentiation plays any role in the synthesis and/or accumulation of CPT, the concentration of CPT was analyzed across various tissues of var.
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