Results 11 to 20 of about 144 (131)
Nitrogen Metabolism in Non-Nodulated and Nodulated Soybean Plants Related to Ureide Synthesis
Nitrogen, 2023 Soybean plants can fix atmospheric N2 in the root nodule, a symbiotic organ with rhizobia. The primary forms of N transported from N2 fixation are ureides, allantoate, and allantoin, supplemented with asparagine.
Takuji Ohyama +4 more
doaj +1 more source
Ureide Permease 5 (AtUPS5) Connects Cell Compartments Involved in Ureide Metabolism [PDF]
Plant Physiology, 2019 Allantoin is a purine oxidative product involved in long distance transport of organic nitrogen in nodulating legumes and was recently shown to play a role in stress tolerance in other plants. The subcellular localization of enzymes that catalyze allantoin synthesis and degradation indicates that allantoin is produced in peroxisomes and degraded in the
Ignacio Lescano +6 more
openaire +3 more sources
Update on ureide degradation in legumes [PDF]
Journal of Experimental Botany, 2005 Warm season N2-fixing legumes move fixed N from the nodules to the aerial portions of the plant primarily in the form of ureides, allantoin and allantoate, oxidation products of purines synthesized de novo in the nodule. Ureides are also products of purine turnover in senescing tissues, such as seedling cotyledons.
Christopher D, Todd +5 more
openaire +2 more sources
Physiological and N2-fixation-related traits for tolerance to drought in soybean progenies [PDF]
Pesquisa Agropecuária Brasileira, 2019 : The objective of this work was to evaluate six soybean (Glycine max) genotypes for physiological traits and biological nitrogen fixation in drought conditions, and their capacity for recovery after rewetting, based on yield components.
Paula Cerezini +6 more
doaj +1 more source
Urease Is Not Essential for Ureide Degradation in Soybean [PDF]
Plant Physiology, 1995 The hypothesis that soybean (Glycine max L. [Merrill]) catabolizes ureides to urea to a physiologically significant extent was tested and rejected. Urease-negative (eu3-e1/eu3-e1) plants were supported by fixed N2 or by 2 mM NH4NO3, so that xylem-borne nitrogen contained predominantly ureides (allantoin and allantoic acid) or amide amino acids ...
N. E., Stebbins, J. C., Polacco
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Gastrointestinal handling of glycosyl [13C]ureides [PDF]
European Journal of Clinical Nutrition, 2003 Lactose [(13)C]ureide has been proposed as a noninvasive marker for oro-caecal transit time in adults and children. The present study investigates the handling of lactose [(13)C]ureide ((13)C LU) and glucose [(13)C]ureide ((13)C GU) by the gastrointestinal tract and describes the metabolic fates of these substrates and describes the extent of tracer ...
D J, Morrison +3 more
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Nucleoside Metabolism Is Induced in Common Bean During Early Seedling Development
Frontiers 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
Biological nitrogen fixation in soybean under water restriction and exposed to 1-methylcyclopropene [PDF]
Pesquisa 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
Enzymes of Ureide Synthesis in Pea and Soybean [PDF]
Plant Physiology, 1983 Soybean (Glycine max) and pea (Pisum sativum) differ in the transport of fixed nitrogen from nodules to shoots. The dominant nitrogen transport compounds for soybean are ureides, while amides dominate in pea. A possible enzymic basis for this difference was examined.The level of enzymes involved in the formation of the ureides allantoin and allantoic ...
T M, Christensen, B U, Jochimsen
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The Assimilation of Ureides in Shoot Tissues of Soybeans [PDF]
Plant Physiology, 1981 The ureides, allantoin and allantoic acid, are major forms of N transported from nodules to shoots in soybeans (Merr.). Little is known about the occurrence, localization, or properties of the enzymes involved in the assimilation of ureides in shoot tissues. We have examined the capacity of the shoot tissues to assimilate allantoin via allantoinase (EC
R J, Thomas, L E, Schrader
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