Results 1 to 10 of about 1,903 (207)

The origin and diversification of Amaryllidaceae: A phylogenetic and biogeographic analysis. [PDF]

Am J Bot
Abstract Premise Previous angiosperm‐wide studies estimated that the geophytic family Amaryllidaceae diverged in Africa 87.00–46.77 million years ago (mya), spanning the Cretaceous and Palaeogene periods, including multiple important climatic and geological events.
Dennehy-Carr ZH, Könyves K, Yesson C, David JC, Culham A.   +4 more
europepmc   +2 more sources

ERK Inhibition Promotes Engraftment of Allografts by Reprogramming T-Cell Metabolism. [PDF]

Adv Sci (Weinh), 2023
Extracellular regulated protein kinases (ERK) pathway is highly activated in graft‐infiltrating T cells. Lycorine, an amaryllidaceae alkaloid extracted from the traditional Chinese medicine Zephyranthes candida, presents to be a novel ERK‐specific inhibitor and prolongs engraftment of allografts.
Tan X, Qi C, Zhao X, Sun L, Wu M, Sun W, Gu L, Wang F, Feng H, Huang X, Xie B, Shi Z, Xie P, Wu M, Zhang Y, Chen G, Chen G.   +16 more
europepmc   +2 more sources

Flavonoids and alkaloids from the rhizomes of Zephyranthes ajax Hort. and their cytotoxicity [PDF]

Scientific Reports, 2020
A new flavanol derivative, (2R,3R)-3-acetoxy-7-hydroxy-3′,4′-methylenedioxyflavan (1), was co-isolated from the rhizomes of Zephyranthes ajax Hort. with the following seven known compounds: 7-hydroxyflavan (2), 7,4′-dihydroxyflavan (3), 7,4′-dihydroxy-8 ...
Khan Viet Nguyen, Duc Viet Ho, Nhan Trong Le, Kiem Van Phan, Jyrki Heinämäki, Ain Raal, Hoai Thi Nguyen   +6 more
doaj   +2 more sources

Historia taxonómica de Zephyranthes bifida (Neorhodophiala, Amaryllidaceae)

Boletín de la Sociedad Argentina de Botánica, 2023
Introducción y objetivos: Zephyranthes bifida (Amaryllidaceae) fue incluida recientemente como única especie polimórfica del subgénero Neorhodophiala. Su historia taxonómica no ha sido reseñada, pudiendo tratarse de un aporte valioso para dilucidar el ...
Juan Manuel Goyenetche, Rosa Lourdes Scaramuzzino, Silvia Arroyo-Leuenberger   +2 more
doaj   +6 more sources

Megagametophyte Differentiation in Zephyranthes drummondii D. Don and Zephyranthes chlorosolen (Herb.) D. Dietr. (Amaryllidaceae)

Caryologia, 2019
Megagametophyte differentiation was examined in cleared ovules from emergent buds and open flowers of Zephyranthes drummondii D. Don and Z. chlorosolen (Herb.) D.
Charles F. Crane
doaj   +2 more sources

Elucidating the enzyme network driving Amaryllidaceae alkaloids biosynthesis in Leucojum aestivum. [PDF]

Plant Biotechnol J
Schematic representation of Amaryllidaceae alkaloid biosynthesis in Leucojum aestivum. Norbelladine synthase (LaNBS) and noroxomaritidine/norcraugsodine reductase (LaNRII) catalyze the condensation of tyramine and 3,4‐dihydroxybenzaldehyde to form norbelladine, which is subsequently O‐methylated by norbelladine‐4′‐O‐methyltransferase (LaN4′OMT ...
Lamichhane B, Gélinas SE, Merindol N, Koirala M, Dos Santos KCG, Germain H, Desgagné-Penix I.   +6 more
europepmc   +2 more sources

Anticoronavirus Isoquinoline Alkaloids: Unraveling the Secrets of Their Structure-Activity Relationship. [PDF]

Influenza Other Respir Viruses
ABSTRACT Background Natural alkaloids are a structurally diverse class of bioactive compounds with significant therapeutic potential. This study aimed to evaluate the in vitro antiviral activity of various natural alkaloids against coronaviruses, clarify molecular effects via bioassays and docking, and explore structure–activity relationships.
Safratova M, Chen YL, Hostalkova A, Chlebek J, Hsieh CF, Chen BH, Cahlikova L, Kosturko S, Backlund A, Horng JT, Hwang TL, Korinek M.   +11 more
europepmc   +2 more sources

Sclerotinia rot of Zephyranthes candida caused by Sclerotinia sclerotiorum and Sclerotinia minor [PDF]

Frontiers in Microbiology
Sclerotinia rot is a serious disease that occurs on Zephyranthes candida. A thorough understanding of the pathogenic fungal species and understanding the biological characteristics are important for controlling sclerotinia.
Fuqiang Yin, Fuqiang Yin, Zhen Song, Lu Liu, Qin Xu, Jiamin Jiang, Zhien Xiao, Tiantian Guo, Yuxin Liu, Shaotian Zhang, Yue Yuan, Wanli Ma, Ming Liu, Ming Liu   +13 more
doaj   +2 more sources

Influence of Sucrose and Activated Charcoal on Phytochemistry and Vegetative Growth in Zephyranthes irwiniana (Ravenna) Nic. García (Amaryllidaceae) [PDF]

Plants
Zephyranthes irwiniana (Ravenna) Nic. García is an endemic, red list threatened species from the Brazilian savanna (Cerrado) with pharmacological potential to treat the symptoms of Alzheimer’s Disease (AD).
Bertholdo Dewes Neto, Kicia Karinne Pereira Gomes-Copeland, Dâmaris Silveira, Sueli Maria Gomes, Julia Marina Muller Craesmeyer, Daniela Aparecida de Castro Nizio, Christopher William Fagg   +6 more
doaj   +2 more sources

Selection and Evaluation of Native Plants for Rain Gardens in Tropical Regions: A Dual-Method Assessment Framework. [PDF]

Plant Environ Interact
ABSTRACT Rain gardens depend on resilient plant species that can withstand fluctuating moisture conditions while providing ecological and aesthetic benefits. This study addresses the limited research on tropical and native herbaceous species by evaluating their health through both visual and physiological assessment methods.
Chen PC, Huang MY, Wang SY.
europepmc   +2 more sources