Results 51 to 60 of about 3,392 (247)

Effective strategies for isolating DNA from members of Asteraceae with high concentrations of secondary metabolites

open access: yesBioTechniques, 2022
The Asteraceae are the largest plant family but among the least studied at the genome level. Our work investigated practical methods to reduce the influence of secondary metabolites – specifically, phenolic compounds – on the extraction of DNA from ...
Dustin W Bailey   +4 more
doaj   +1 more source

Rhodora [PDF]

open access: yes, 2001
Index v.76-100 ...
Fernald, Merritt Lyndon, 1873-1950   +2 more
core   +1 more source

Recent Long‐Distance‐Dispersal Explains the Range Disjunction of the Old‐Word Cockleburs (Xanthium strumarium)

open access: yesJournal of Biogeography, Volume 52, Issue 5, May 2025.
ABSTRACT Aim In the present study, we focused in addressing questions concerning the biogeographic history of Xanthium strumarium, an Old World native species whose close relatives are generally all native to the American continent. Location The species distribution covers the Eurasian continent and some African regions and close islands.
Eleonora Manzo, Salvatore Tomasello
wiley   +1 more source

Characterization of a plant‐pathogenic T3SS‐lacking Xanthomonas strain isolated from common ragweed

open access: yesPlant Pathology, Volume 74, Issue 2, Page 308-319, February 2025.
We isolated a pathogenic Xanthomonas strain from common ragweed. In this study, we explore its bioherbicide potential, host‐specificity, and the virulence determinants encoded in its genome. Abstract Common ragweed (Ambrosia artemisiifolia) is one of the leading causes of allergenic rhinitis, as well as a major weed of many crops.
Adrien Biessy   +6 more
wiley   +1 more source

Atlas palinológico de la Amazonia Colombiana II. Familia Asteraceae

open access: yesCaldasia, 1997
We describe pollen from 26 genera of Asteraceae which belong to six tribes: Heliantheae (10), Eupatorieae (6), Vernonieae (6), Senecioneae (2), Mutisieae (1) and Inulineae (1).
Jiménez Bulla Luis Carlos   +1 more
doaj  

Estudos taxonômicos do gênero Calea (Asteraceae, Neurolaeneae) no estado da Bahia, Brasil

open access: yesRodriguésia
Resumo Asteraceae é a maior família das angiospermas com ca. 24.000 espécies e 1600-1700 gêneros com distribuição cosmopolita. Calea L. contém aproximadamente 125 espécies que ocorrem em regiões tropicais e subtropicais do Novo Mundo, sendo que o maior ...
Nádia Roque, Vitor Cavalcanti Carvalho
doaj   +1 more source

Species delimitation in Xanthium sect. Acanthoxanthium (Heliantheae, Asteraceae) and the neglected species Xanthium argenteum

open access: yesTAXON, Volume 73, Issue 5, Page 1251-1271, October 2024.
Abstract Xanthium is a genus of annual herbaceous plants that stands out within Asteraceae for being wind‐pollinated, diclinous monoecious, and bearing solitary pistillate flowers in peculiar spiny structures (burs). Xanthium sect. Acanthoxanthium is native to South America and characterized by the presence of trifurcate spines at the base of the ...
Eleonora Manzo   +5 more
wiley   +1 more source

Synthesis and conformational analysis of leptocarpin derivatives. Influence of modification of the oxirane ringon leptocarpin's cytotoxic activity. [PDF]

open access: yes, 2006
Indexación: ScieloABSTRACT The reaction in acidconditions of Leptocarpin 1, a compound with antitumor activity, formed two new isomeric products, 8b-angeloyl-1b,3b-dihydroxy-4,10-dimethyl,-D11(13) methylen-4Z,9Z-dieneheliangol-6,12-olide 2 and 8b ...
...[et al.].   +4 more
core   +1 more source

El género Sclerocarpus (Asteraceae, Heliantheae) en México The genus Sclerocarpus (Asteraceae, Heliantheae) in Mexico

open access: yesRevista Mexicana de Biodiversidad, 2011
El género Sclerocarpus (Asteraceae, Heliantheae) está constituido por 8 especies, 7 de ellas presentes en el territorio mexicano. Este taxón se caracteriza por sus páleas, que al madurar se tornan gruesas, duras y encierran por completo a las cipselas ...
José Luis Villaseñor   +1 more
doaj  

Natural Products Diversity in Plant-Insect Interaction between Tithonia diversifolia (Asteraceae) and Chlosyne lacinia (Nymphalidae)

open access: yesMolecules, 2019
The chemical ecology of plant-insect interactions has been driving our understanding of ecosystem evolution into a more comprehensive context. Chlosyne lacinia (Lepidoptera: Nymphalidae) is an olygophagous insect herbivore, which mainly uses host plants ...
Marília Elias Gallon   +4 more
doaj   +1 more source

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