Exudate Flavonoids in Several Asteroideae and Cichorioideae (Asteraceae)

Wollenweber, Eckhard; Dörr, Marion; Fritz, Hannelore; Valant–Vetschera, Karin M.

doi:10.1515/znc-1997-3-401

Cited by 29 publications

(19 citation statements)

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“…This indicates that some variation exists in this alpine plant species. A similar composition of exudate flavonoids was also reported from H. amplexicaule L. (Wollenweber et al, 1997a). Mainly flavonoid glycosides were reported from Hieracium spp.…”

Section: Flavonoid Aglycones Of Lactuceae Speciessupporting

confidence: 80%

“…Senecio murinus Phil., a Chilean species, contained kae-3-Me/-3,7-diMe/-3,7,4Ј-triMe; qu-3,7-diMe in its exudate. The exudate of S. viscosa L. contained some simple flavone and flavonol methyl ethers (Wollenweber et al, 1997a), corresponding in substitution patterns to the new results. It is a pity that only so few species could so far be analyzed for exudate compounds.…”

Section: Flavonoid Aglycones Of Senecioneae Speciessupporting

confidence: 77%

“…This is also true for genera of other tribes that had been studied before (Valant-Vetschera and Wollenweber, 2004;Wollenweber et al, 1997aWollenweber et al, , b, 2005. The only exception is represented by the Senecioneae, which showed little complexity in the exudates.…”

Section: Chemodiversity At the Tribal Levelmentioning

confidence: 74%

“…Xanthium strumarium L.: 6-OH-kae-6-Me/-3,6-diMe; queg-3,6-diMe/-3,6,3Ј-triMe. Earlier, only small amounts of exudate were obtained from another accession, yielding 6-OH-kae-6-Me and queg-3,6-diMe (Wollenweber et al, 1997a).…”

Section: ) Iva Xanthifoliamentioning

confidence: 95%

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Chemodiversity of Exudate Flavonoids in Seven Tribes of Cichorioideae and Asteroideae (Asteraceae)

Valant–Vetschera

Wollenweber

2007

Zeitschrift Für Naturforschung C

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Members of several genera of Asteraceae, belonging to the tribes Mutisieae, Cardueae, Lactuceae (all subfamily Cichorioideae), and of Astereae, Senecioneae, Helenieae and Heliantheae (all subfamily Asteroideae) have been analyzed for chemodiversity of their exudate flavonoid profiles. The majority of structures found were flavones and flavonols, sometimes with 6-and/or 8-substitution, and with a varying degree of oxidation and methylation. Flavanones were observed in exudates of some genera, and, in some cases, also flavonol-and flavone glycosides were detected. This was mostly the case when exudates were poor both in yield and chemical complexity. Structurally diverse profiles are found particularly within Astereae and Heliantheae. The tribes in the subfamily Cichorioideae exhibited less complex flavonoid profiles. Current results are compared to literature data, and botanical information is included on the studied taxa.

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Section: Flavonoid Aglycones Of Lactuceae Speciessupporting

confidence: 80%

Section: Flavonoid Aglycones Of Senecioneae Speciessupporting

confidence: 77%

Section: Chemodiversity At the Tribal Levelmentioning

confidence: 74%

Section: ) Iva Xanthifoliamentioning

confidence: 95%

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Chemodiversity of Exudate Flavonoids in Seven Tribes of Cichorioideae and Asteroideae (Asteraceae)

Valant–Vetschera

Wollenweber

2007

Zeitschrift Für Naturforschung C

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“…Air-dried plant material was rinsed with acetone and the concentrated solutions were subjected to column chromatography and analyzed by thinlayer chromatography as reported in the previous paper (Wollenweber et al, 1997).…”

Section: Methodsmentioning

confidence: 99%

Exudate Flavonoids in Asteraceae from Arizona, California and Mexico

Wollenweber¹,

Dörr²,

Fritz³

et al. 1997

Zeitschrift Für Naturforschung C

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A steraceae, A stereae, Eupatorieae, Helenieae, Heliantheae, Exudate Flavonoids A series of A steraceae, belonging to the tribes Astereae, Eupatorieae, Helenieae and Heli antheae, have been analyzed for the presence of flavonoid aglycones accumulated on leaf and stem surfaces. Methyl ethers of apigenin, luteolin, kaempferol, and quercetin as well as methyl ethers of their relevant 6 -hydroxy derivatives were abundant, whereas 8 -O-substituted derivatives and flavanones were encountered only occasionally; 6 ,8 -di-O-substituted flavonols were found in only one species.

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Flavonoids of the Sunflower Family (Asteraceae)

Bohm

Stuessy

2001

120

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This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machines or similar means, and storage in data banks. This book is dedicated to:Arthur Cronquist Outstanding plant systematist and major contributor to understanding taxonomic relationships within Asteraceae and Ralph E. Alston (1925Alston ( -1967) Visionary natural products chemist and geneticist who pioneered the use of chemical data in studies of plant systematics and evolution PrefaceCertainly many of the readers of this book will remember the early developments of chemosystematics in the late 1950s. We ourselves remember the excitement of these new data bearing on plant interrelationships. The hopes were high, the techniques were rapidly evolving, the quantities of data were large, and young workers were eagerly enthusiastic. Some even went so far as to predict that chemical data would soon replace morphological information as the basis for plant classification. These overly zealous predictions did not materialize, of course, as the history of plant systematics has amply shown during the past two centuries. If there is any distinct characteristic of systematics it is synthesis, as Lincoln Constance (1964) called it, the "unending synthesis." New tools generate new data and provide insights on additional dimensions of plant relationships. This will never change-we will continue to discover new tools and new data in the years ahead, and they will continue to be incorporated into the predictive general reference system of classification.The earlier efforts in chemosystematics focused on secondary plant products: alkaloids, betacyanins, carbohydrates, cyanogenic glycosides, glucosinolates, lipids, terpenoids, and especialiy flavonoids. The latter were particularly well suited for chemosystematic investigation for several reasons: ease of isolation and characterization, small amounts of plant material needed for analysis, stability of compounds especially through routine preparation of herbarium specimens, and low cost to obtain useful information. As a result of these considerable advantages, literally thousands of studies on use of flavonoids in plant systematics have been published. Although now with the present zest for macromolecular data from DNA restriction sites and sequences, there are fewer workers and laboratories dedicated to flavonoid chemosystematic studies; twenty years ago they were the new currency of exciting data in plant systematics.Because of many workers historically interested in the sunflower family, Asteraceae (or Compositae), in part due to its large size (approximately 23,000 species;Bremer, 1994), and because hundreds of flavonoid compounds were discovered in this family, many chemosystematic investigations have been completed on various taxa. Many studies came from the laboratories of R. A. Alston, B. L. Turner, and T. J. Mabry in the Department of Botany ...

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Exudate Flavonoids in Several Asteroideae and Cichorioideae (Asteraceae)

Cited by 29 publications

References 11 publications

Chemodiversity of Exudate Flavonoids in Seven Tribes of Cichorioideae and Asteroideae (Asteraceae)

Chemodiversity of Exudate Flavonoids in Seven Tribes of Cichorioideae and Asteroideae (Asteraceae)

Exudate Flavonoids in Asteraceae from Arizona, California and Mexico

Flavonoids of the Sunflower Family (Asteraceae)

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