Results 191 to 200 of about 299,439 (356)

Relaxation of the leaf economics spectrum within and across quaking aspen Populus tremuloides genotypes

open access: yesOikos, EarlyView.
Plant functional traits typically show strong covariation, e.g. as in the worldwide leaf economics spectrum (LES). Covariation is thought to arise from selective forces and physical constraints. However, processes shaping covariation at interspecific scales may differ from those at intraspecific scales.
Jolanta Rieksta   +5 more
wiley   +1 more source

MicroRNA processing in Arabidopsis thaliana

open access: yes, 2010
Pflanzliche microRNAs (miRNAs) werden durch das RNaseIII-ähnliche Enzym DICER-LIKE1 prozessiert, zusammen mit dem doppelstrang-bindenden Protein HYPONASTIC LEAVES1 und dem Zink Finger Protein SERRATE. Zusammen schneiden sie eine miRNA/miRNA* Duplex aus der primären miRNA Transkript (pri-miRNA) aus, mit einem 2 Nukleotid Überhang am 3' Ende.
openaire   +1 more source

Buffer‐Mediated Catalyst‐Free Strecker Reaction Toward Enzymatic Implementation

open access: yesChemistryOpen, EarlyView.
Hydroxynitrile lyases (HNLs) are proven to accept imines as substrates and to catalyze the formation of α‐aminonitriles. The process results in the precursors of natural and unnatural α‐amino acids after extraction, without chromatography. This new application of HNL enzymes in Strecker reaction is an example for biocatalysis in multicomponent ...
Péter Magyar   +8 more
wiley   +1 more source

Metabolite Screening From Pinus pinea Needles Reveals (+)‐Isocupressic Acid as a Key Phytotoxin for Weed Management

open access: yesPhytochemical Analysis, EarlyView.
This study explores the phytotoxicity of Pinus pinea needle extracts and metabolites to evaluate their potential for controlling dicotyledonous weeds. A strategy based on GC–MS, NMR, and optical methods revealed an array of aromatic compounds which are of crucial interest for phytochemical research. Hence, a bio‐guided purification led to the isolation
Hajer Hlaili   +11 more
wiley   +1 more source

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