Common emphasis of the fact that isoflavonoids are characteristic metabolites of leguminous plants sometimes leads to overlooking that the presence of isoflavonoids has been reported in several dozen other families. The spectrum of isoflavonoid producing taxa includes the representatives of four classes of multicellular plants, namely the Bryopsida, the Pinopsida, the Magnoliopsida and the Liliopsida. A review, recently published by Reynaud et al. [Reynaud, J., Guilet D., Terreux R., Lussignol M., Walchshofer N., 2005. Isoflavonoids in non-leguminous families: an update. Nat. Prod. Rep. 22, 504-515], provided listing of 164 isoflavonoids altogether reported in 31 non-leguminous angiosperm families. In this contribution we complement the abovementioned inventory bringing the references on further 17 isoflavonoid producing families and on additional 49 isoflavonoids reported to occur in non-leguminous plants.
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Biosynthesis and metabolic engineering of isoflavonoids in model plants and crops: a review.
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June 2011
Faculté des Sciences, Département de Chimie, Université de Ndjamena, Ndjamena, Tchad.
Six isoflavonoid derivatives among which three are new have been isolated from the stem heartwood of Lophira alata. The structures were elucidated from spectroscopic and chemical evidences. Two have unusual carbon skeletons, possibly resulting from a variant of isoflavonoid biogenesis.
View Article and Find Full Text PDFGenetic and metabolic engineering of isoflavonoid biosynthesis.
Appl Microbiol Biotechnol
May 2010
Maize Research Institute, Sichuan Agricultural University, Yaan Sichuan, 625014, China.
Isoflavonoids are a diverse group of secondary metabolites derived from the phenylpropanoid pathway. These compounds are distributed predominantly in leguminous plants and play important roles in plant-environment interactions and human health. Consequently, the biosynthetic pathway of isoflavonoid compounds has been widely elucidated in the past decades.
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Curr Med Chem
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Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Italy.
In contrast with the parent class of flavonoids, the distribution of the isoflavonoid class in the plant kingdom is relatively limited, probably owing to the sporadic occurrence of isoflavone synthase. Isoflavonoids have been mostly found in the subfamily Fabaceae/Papilionoideae of the Leguminosae family. Isoprenoid-substituted (also called complex) isoflavonoids are expressed from a smaller number of plants, as a result of the similarly restricted distribution of prenyltransferases (PT-ase).
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Phytochemistry
February 2008
Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology, Institute of Chemical Technology in Prague, Technická 5, 166 28 Praha 6, Czech Republic.
Isoflavonoids are characteristic metabolites in legumes and an overwhelming number of reports concerning them come from the Leguminosae. Nevertheless, the spectrum of isoflavonoid producing taxa includes the representatives of four classes of multicellular plants, namely the Bryopsida, the Pinopsida, the Magnoliopsida and the Liliopsida. At least 59 non-leguminous families have been reported to produce isoflavones sensu lato; coumestans have been reported in 3 families, coumaronochromones in 3, pterocarpans in 9 and rotenoids in 8 families.
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