Results 11 to 20 of about 1,602 (196)

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

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

Undescribed Amaryllidaceae Alkaloids from Zephyranthes citrina and Their Cytotoxicity. [PDF]

J Nat Prod
This phytochemical study presents the isolation of eight alkaloids from Zephyranthes citrina Baker. The structures of the new alkaloids, zephycitrine (1) and 6-oxonarcissidine (2), were established by analysis of spectroscopic and spectrometric data. Processing the EtOH extract under acid-base conditions yielded the unreported isolation artifacts 3 and
Křoustková J, Kohelová E, Muthná D, Kuneš J, Havelek R, Vrabec R, Malaník M, Suchánková D, Chlebek J, Jenčo J, Kosturko Š, Cahlíková L.   +11 more
europepmc   +3 more sources

Green Synthesis of Nano‐Sized Metal Oxides (Ag2O, CuO, ZnO, MgO, CaO, and TiO2) Using Plant Extract for a Sustainable Environment

Nano Select
The demand for green synthesis of metal oxide nanomaterials is increasing tremendously to achieve sustainable development goals and for a clean environment. Simultaneously, metal oxides hold significant importance across various fields, such as catalysis,
Sanjana Afrin Disha, Md. Sahadat Hossain, Md. Lawshan Habib, Samina Ahmed   +3 more
doaj   +2 more sources

Methyl Jasmonate Elicitation for In Vitro Lycorine Accumulation in Three Zephyranthes Species and Comparative Analysis of Tissue-Cultured and Field Grown Plants

Horticulturae, 2023
Lycorine is an important Amaryllidaceae alkaloid showing anti-cancerous activity on numerous cell lines; and it also demonstrates antiviral activity against several viruses including SARS-CoV-2 responsible for COVID-19.
Rukaya Syeed, Abdul Mujib, Yaser Hassan Dewir, Moien Qadir Malik, Yashika Bansal, Bushra Ejaz, Jyoti Mamgain, Mansor Hakiman, Ali Alsughayyir   +8 more
doaj   +1 more source

Potential Therapeutic Applications of Plant‐Derived Alkaloids against Inflammatory and Neurodegenerative Diseases

Evidence-Based Complementary and Alternative Medicine, Volume 2022, Issue 1, 2022., 2022
Alkaloids are a type of natural compound possessing different pharmacological activities. Natural products, including alkaloids, which originate from plants, have emerged as potential protective agents against neurodegenerative disorders (NDDs) and chronic inflammations. A wide array of prescription drugs are used against these conditions, however, not
Babita Aryal, Bimal Kumar Raut, Salyan Bhattarai, Sobika Bhandari, Parbati Tandan, Kabita Gyawali, Kabita Sharma, Deepa Ranabhat, Ranjita Thapa, Dipa Aryal, Atul Ojha, Hari Prasad Devkota, Niranjan Parajuli, Weidong Pan   +13 more
wiley   +1 more source

Stress Response and Nutrient Homeostasis in Lettuce (Lactuca sativa) Exposed to Graphene Quantum Dots Are Modulated by Particle Surface Functionalization

Advanced Biology, Volume 5, Issue 4, April 2021., 2021
Graphene quantum dots (GQDs) induce antioxidative damage, alteration of phytohormone levels and mineral homeostasis, which eventually cause impaired photosynthesis and plant growth. Surface functionalization determines the reactive oxygen species generation and antioxidants oxidation capacity, which leads to different phytotoxicity of GQDs.
Peng Zhang, Xinyue Wu, Zhiling Guo, Xiaonan Yang, Xiangang Hu, Iseult Lynch   +5 more
wiley   +1 more source