Results 61 to 70 of about 1,017 (175)

Seeing double: two different homospermidine oxidases are involved in pyrrolizidine alkaloid biosynthesis in different organs of comfrey (Symphytum officinale)

The Plant Journal, Volume 119, Issue 3, Page 1272-1288, August 2024.
SUMMARY Pyrrolizidine alkaloids (PAs) are toxic specialized metabolites produced in several plant species and frequently contaminate herbal teas or livestock feed. In comfrey (Symphytum officinale, Boraginaceae), they are produced in two different organs of the plant, the root and young leaves. In this study, we demonstrate that homospermidine oxidase (
Mahmoud M. Zakaria, Lars H. Kruse, Annika Engelhardt, Dietrich Ober   +3 more
wiley   +1 more source

Flora da Reserva Biológica Guaribas, PB, Brasil: Boraginaceae

Hoehnea
RESUMO Este trabalho consiste no levantamento taxonômico de Boraginaceae para a Reserva Biológica (REBIO) Guaribas, Paraíba, Brasil. Foram registradas seis espécies em quatro gêneros: Cordia nodosa Lam., C. superba Cham., Euploca procumbens (Mill.) Diane
José Iranildo Miranda de Melo, Diego Daltro Vieira   +1 more
doaj   +1 more source

Nuclear phylogenomics of angiosperms and insights into their relationships and evolution

Journal of Integrative Plant Biology, Volume 66, Issue 3, Page 546-578, March 2024.
This review synthesizes numerous nuclear phylogenomic analyses of angiosperms (analyses that resolved the relationships of major clades, most orders, and many families and subgroups) and discusses the improved understanding of angiosperm biogeography, diversification dynamics, and character evolution.
Guojin Zhang, Hong Ma
wiley   +1 more source

Angiosperm‐wide analysis of fruit and ovary evolution aided by a new nuclear phylogeny supports association of the same ovary type with both dry and fleshy fruits

Journal of Integrative Plant Biology, Volume 66, Issue 2, Page 228-251, February 2024.
Phylogenetic analysis and molecular dating elucidate relationships for orders and families, trace crown angiosperms’ Triassic origin, unveil parallel carpel fusions in early eudicots, monocots, and magnoliids and associate specific fruit types sharing the same ovary type.
Yezi Xiang, Taikui Zhang, Yiyong Zhao, Hongjin Dong, Hongyi Chen, Yi Hu, Chien‐Hsun Huang, Jun Xiang, Hong Ma   +8 more
wiley   +1 more source

Flora das cangas da Serra dos Carajás, Pará, Brasil: Cordiaceae

Rodriguésia
Resumo É apresentado o levantamento das espécies de Cordiaceae que ocorrem sobre as cangas da Serra dos Carajás, no estado do Pará. Dois gêneros e três espécies foram registrados: Cordia nodosa, C. exaltata e Varronia multispicata.
Maurício Takashi Coutinho Watanabe, Alice Lima Hiura, Matheus Guimarães Cardoso Nogueira   +2 more
doaj   +1 more source

Steps Toward a Natural System of the Dicotyledons [PDF]

, 1991
Embryological character states are mapped on the diagrams of dicotyledons (G. Dahlgren 1989). The often well-defined pattern of distribution forms a basis for discussing and clarifying phylogenetic relations.
Dahlgren, Gertrud
core   +2 more sources

Flora das cangas da Serra dos Carajás, Pará, Brasil: Heliotropiaceae

Rodriguésia
Resumo É apresentado o levantamento das espécies de Heliotropiaceae para as formações de canga na Serra dos Carajás, Pará, Brasil. Duas espécies foram registradas: Euploca humistrata (que se configura como um novo registro para a flora paraense) e E ...
Maurício Takashi Coutinho Watanabe, Alice Lima Hiura   +1 more
doaj   +1 more source

A New Species of Cordia (Cordiaceae, Boraginales) from Brazil

Novon: A Journal for Botanical Nomenclature, 2010
A new species from Brazil, Cordia pilosa M. Stapf & Taroda (Cordiaceae), is described from northeastern Brazil. Illustrations and data on habitat, distribution, and phenology are provided. The new species belongs to Cordia sect. Superbiflorae Taroda, and it is distinguished from similar species in section Superbiflorae by its compact inflorescences and
Stapf, Maria, Ranga, Neusa Taroda, Silva, Tânia Regina dos Santos   +2 more
openaire   +3 more sources

Contribution to the systematic value of the leaf trichomes in the Cordiaceae (Boraginales)

Revista Mexicana de Biodiversidad
Leaf trichomes are vital for plant physiology, defense, and ecological interactions. This study utilized scanning electron microscopy to examine the leaf trichomes of 7 species in the family Cordiaceae, including 5 species from the genus Cordia and 2 ...
Hamid Nazari, Farrokh Ghahremaninejad
doaj   +1 more source

Progress and problems in the assessment of flower morphology in higher-level systematics [PDF]

, 2018
Floral features used for characterization of higher-level angiosperm taxa (families, orders, and above) are assessed following a comparison of earlier (precladistic/premolecular) and current classifications.
Endress, Peter, Matthews, Merran
core