Results 11 to 20 of about 478 (121)

Impact of Nodulation Efficiency and Concentrations of Soluble Sugars and Ureides on Soybean Water Deficit During Vegetative Growth

open access: yesNitrogen
Drought is the primary limiting factor affecting soybean productivity, and is exacerbated by climate change. In legumes like soybeans, biological nitrogen fixation (BNF) is the main form of nitrogen acquisition, with nitrogen being converted into ureides.
Helena Chaves Tasca   +6 more
doaj   +2 more sources

Diurnal Changes in the Transport Rates of Ureides, Amides, Cations, Anions, and Organic Acids Estimated by Xylem Sap Exudate and the Water Flow Rate of Soybean Plants

open access: yesPlants
Ureides; allantoate, allantoin, and amides; asparagine, and glutamine are the N2 fixation products in soybean root nodules, and they are transported through xylem vessels.
Ryo Toyoda   +3 more
doaj   +2 more sources

Nucleoside Metabolism Is Induced in Common Bean During Early Seedling Development

open access: yesFrontiers in Plant Science, 2021
Nucleoside hydrolases (NSH; nucleosidases) catalyze the cleavage of nucleosides into ribose and free nucleobases. These enzymes have been postulated as key elements controlling the ratio between nucleotide salvage and degradation.
Elena Delgado-García   +5 more
doaj   +1 more source

Role of ureides in source-to-sink transport of photoassimilates in non-fixing soybean

open access: yes, 2020
International audienceNitrogen (N)-fixing soybean plants use the ureides allantoin and allantoic acid as major long-distance transport forms of N, but in non-fixing, non-nodulated plants amino acids mainly serve in source-to-sink N allocation.
Sitton, Ciera Chenoa   +6 more
core   +1 more source

Reduced carbon availability to bacteroids and elevated ureides in nodules, but not in shoots, are involved in the nitrogen fixation response to early drought in soybean [PDF]

open access: yes, 2007
Nitrogen fixation (NF) in soybean (Glycine max L. Merr.) is highly sensitive to soil drying. This sensitivity has been related to an accumulation of nitrogen compounds, either in shoots or in nodules, and a nodular carbon flux shortage under drought.
Larrainzar, Estíbaliz [0000-0002-1254-7391]   +4 more
core   +1 more source

Biological nitrogen fixation in soybean under water restriction and exposed to 1-methylcyclopropene [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2016
: The objective of this work was to assess the effects of 1-methylcyclopropene (1-MCP) on traits related with biological nitrogen fixation on 'BRS 268' soybean (Glycine max) subjected to water restriction. Plants were either exposed to drought between 32
Vitor Camargo do Nascimento Junior   +2 more
doaj   +1 more source

Beyond the Fixed Charge: A New On‐Tissue Derivatisation Strategy Employing Photoionisable Chromophores for Mass Spectrometry Imaging of Amino‐Containing Metabolites

open access: yesAngewandte Chemie, Volume 138, Issue 37, 7 September 2026.
We introduce a novel chemical derivatisation strategy for the UV‐activated detection of elusive metabolites. Incorporation of a tocopherol‐active chromophore allows for the detection of tagged analytes as photoionised radical cations, selectively induced by a 266 nm laser.
Sofia R. McGowan   +5 more
wiley   +2 more sources

Design and synthesis of novel ureido and thioureido conjugated hydrazone derivatives with potent anticancer activity

open access: yesBMC Chemistry, 2022
Background Compounds possessing urea/thiourea moiety have a wide range of biological properties including anticancer activity. On the other hand, taking advantage of the low toxicity and structural diversity of hydrazone derivatives, they are presently ...
Nasrin Nassiri Koopaei   +9 more
doaj   +1 more source

Ureides sap content in common bean genotypes selected for high-nodulation efficiency. [PDF]

open access: yes, 2020
This work presents results of the field evaluation of 15 common bean genotypes previously selected in a greenhouse screening which the ureides sap contents were quantified by contrasting the performance of those genotypes under N fertilization and under ...
ARAÚJO, A. P. de   +3 more
core  

Variation in the ureide content of Jack Bean during the reproductive stages in response to nitrate

open access: yesBrazilian Archives of Biology and Technology, 2009
Nitrogen is frequently the limiting mineral nutrient for plant productivity and it is essential to obtain an understanding of how this element is assimilated and its metabolism regulated, in crop plants.
Liliane Santos Camargos   +3 more
doaj   +1 more source

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