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Determination of Self- and Inter-(in)compatibility Relationships in Apricot Combining Hand-Pollination, Microscopy and Genetic Analyses
Published on: June 16, 2020
Chemosystematics of the rosiflorae
1Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. roc2006@farmacia.ufmg.br
Brazilian Journal of Biology = Revista Brasleira De Biologia
|October 4, 2008
Summary
Flavonoids and triterpenoids reveal evolutionary relationships within the Rosiflorae superorder, with Buxales showing unique alkaloid chemistry. This study identifies key chemical markers for plant taxonomy and evolution.
Area of Science:
- Plant Systematics
- Phytochemistry
- Evolutionary Biology
Background:
- The superorder Rosiflorae encompasses diverse species within the Angiospermae, distributed widely in temperate regions.
- Previous studies indicated varied chemical profiles across Rosiflorae, necessitating a deeper understanding of phylogenetic relationships.
Purpose of the Study:
- To investigate the phylogenetic affinities within the Rosiflorae superorder using chemical markers.
- To identify reliable taxonomic markers for Rosiflorae orders and families.
- To elucidate evolutionary trends in chemical profiles and their correlation with morphology.
Main Methods:
- Phytochemical analysis focusing on flavonoids and triterpenoids.
- Correlation analysis between chemical, morphological, and chemo-morphological data.
- Comparative analysis of alkaloid profiles, particularly in Buxales.
Main Results:
- Flavonoids and triterpenoids serve as significant taxonomic markers for Rosiflorae, demonstrating phylogenetic relationships.
- Trochodendrales appear primitive, while Saxifragales are evolutionarily advanced within Rosiflorae.
- Buxales exhibits an isolated position, characterized by unique alkaloid production.
Conclusions:
- Chemical data, especially flavonoids and triterpenoids, strongly support phylogenetic reconstructions within Rosiflorae.
- The prevalence of flavonols suggests a primitive status for the superorder.
- Glycosylation is a preferred protective mechanism over methylation in Rosiflorae flavonoid evolution.
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