Results 11 to 20 of about 39,755 (263)

Una propuesta didáctica para la enseñanza-aprendizaje de insectos, plantas y el problema de la pérdida de polinizadores

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2021
Se presenta un diseño didáctico llevado a cabo en formación inicial de profesorado de Educación Primaria alrededor de los insectos, las plantas y el problema de la pérdida de polinizadores.
Blanca Puig, Borja Gómez Prado
doaj   +1 more source

Plantas medicinais [PDF]

open access: yes, 2011
Plantas Medicinais colabora com a preservação e multiplicação das informações obtidas em trabalhos comunitários acerca do uso de plantas para fins medicinais, com o devido respeito às tradições da herança cultural africana na medicina do Brasil. As indicações terapêuticas tradicionais indicam plantas para fins medicinais que extrapolam em muito a ...
openaire   +2 more sources

Isoenzimas

open access: yesBotan‪ical Sciences, 1997
Este trabajo presenta un análisis sobre el uso de las isoenzimas como marcadores moleculares para estudios evolutivos, en particular de la genética de poblaciones. Primero se expone la metodología de la técnica de electroforesis en geles de almidón , que
Nidia Pérez-Nasser, Daniel Piñero
doaj   +1 more source

Plantas e filosofia, plantas ou filosofia

open access: yes(Des)troços: revista de pensamento radical, 2021
This paper reflects on the current interest of philosophy and sciences in general in plants, especially in view of its collective and decentralized character, which, far from guaranteeing any radical change in thought and in the world, may represent a deepening of the inherent displacing character of capitalism.
Michael Marder   +2 more
openaire   +2 more sources

Generation of the Camptothecin Scaffold by a Flavin‐Catalyzed Photooxidative Skeletal Reorganization

open access: yesAngewandte Chemie, EarlyView.
The biosynthetic pathway of the anticancer drug precursor camptothecin involves an enigmatic skeletal reorganization from a 6/5/6 tetrahydro‐β‐carboline to a 6/6/5 pyrroloquinoline ring system. Here, we show that this transformation can be achieved by photooxidation with flavin cofactors, such as flavin mononucleotide (FMN) as catalysts.
Shenyu Liu   +6 more
wiley   +2 more sources

Plantae Krukovianae-V

open access: yesBrittonia, 1936
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

Dual Cytoplasmic and Chloroplastic Mechanisms Fine‐Tune Chloroplast Division through ARC3 Protein Stability

open access: yesAdvanced Science, EarlyView.
ARC3 levels are controlled by cytosolic and chloroplast proteolytic systems. PUB52 mediates ARC3 precursor ubiquitination and degradation in the cytosol, while CLPC1 promotes ARC3 degradation in chloroplasts, where ARC2 protects ARC3 from excessive breakdown. Disrupting these components causes chloroplast division defects, placing them upstream of ARC3.
Yang Yuan   +5 more
wiley   +1 more source

Resistant Peanut Genotype Reprograms Rhizosphere Metabolism to Enhance Bacterial Wilt Suppression

open access: yesAdvanced Science, EarlyView.
The resistant peanut genotype selectively recruits beneficial bacteria, which coincides with the activation of salicylic acid (SA)‐dependent systemic acquired resistance (SAR) against Ralstonia solanacearum. Keystone rhizosphere metabolites are positively correlated with both beneficial microbiome assembly and SAR gene expression.
Rui Ren   +20 more
wiley   +1 more source

Multi‐Stimuli‐Responsive Hydrogen‐Bonded Organic Frameworks Nanocarriers Enable Targeted Fungicide Release and Plant Immune Regulation

open access: yesAdvanced Science, EarlyView.
A fluorinated hydrogen‐bonded organic framework nanocarrier (PFC‐1‐F) loaded with PYR and coated with HACC enables multi‐stimuli‐responsive (enzyme/ROS/pH) release at infection sites. Exhibiting targeted antifungal activity against Sclerotium rolfsii, modulating plant antioxidant defense, and demonstrating favorable biosafety across plant, soil, and ...
Guangming Ma   +6 more
wiley   +1 more source

Biorremediación de mercurio y níquel por bacterias endófitas de macrófitas acuáticas

open access: yesRevista Colombiana de Biotecnología, 2019
La contaminación ambiental se ha categorizado como uno de los principales problemas que afecta la salud de las diferentes formas de vida. Las bacterias endófitas (BE), son capaces de mejorar el estado nutricional de las plantas y remover contaminantes ...
María Paulina Torres Perez   +2 more
doaj   +1 more source

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