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Conserved alternative splicing of Arabidopsis transthyretin-like determines protein localization and S-allantoin synthesis in peroxisomes.

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S-allantoin, a major ureide compound, is produced in plant peroxisomes from oxidized purines. Sequence evidence suggested that the Transthyretin-like (TTL) protein, which interacts with brassinosteroid receptors, may act as a bifunctional enzyme in the synthesis of S-allantoin. Here, we show that

Suppressing photorespiration for the improvement in photosynthesis and crop yields: A review on the role of S-allantoin as a nitrogen source.

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Environmental variations resulting in biotic and abiotic stresses demand adaptive changes in the photosynthetic machinery. To cope with these challenges, plant scientists are constantly striving to enhance photosynthetic activity. The photorespiration pathway, which fixes O₂ and releases

A novel superfamily of transporters for allantoin and other oxo derivatives of nitrogen heterocyclic compounds in Arabidopsis.

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A wide spectrum of soil heterocyclic nitrogen compounds are potential nutrients for plants. Here, it is shown that Arabidopsis plants are able to use allantoin as sole nitrogen source. By functional complementation of a yeast mutant defective in allantoin uptake, an Arabidopsis transporter, AtUPS1

Allantoin Increases Cadmium Tolerance in Arabidopsis via Activation of Antioxidant Mechanisms.

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Plants apply various molecular, physiological and morphological strategies in response to undesirable environmental conditions. One of the possible responses which may contribute to surviving stressful conditions is the accumulation of ureides. Ureides are recognized as important nitrogen-rich

Allantoin accumulation mediated by allantoinase downregulation and transport by Ureide Permease 5 confers salt stress tolerance to Arabidopsis plants.

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Allantoin, a metabolite generated in the purine degradation pathway, was primarily considered an intermediate for recycling of the abundant nitrogen assimilated in plant purines. More specifically, tropical legumes utilize allantoin and allantoic acid as major nodule-to-shoot nitrogen transport

Allantoin contributes to the stress response in cadmium-treated Arabidopsis roots.

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Ureides are nitrogen-rich compounds, derived from purine catabolism. A dual role for ureides, and for allantoin in particular, in both nitrogen recycling and the abiotic stress response has been recently identified. Previous work on the effect of allantoin on cadmium (Cd)-exposed Arabidopsis

There is a direct link between allantoin concentration and cadmium tolerance in Arabidopsis.

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Allantoin, an important intermediate of ureide metabolism, has been the subject of investigation recently due to its dual function in nitrogen recycling and abiotic stress response in plants. Allantoin appears to be the dominant ureide accumulating in response to different abiotic stresses, and

Exogenous allantoin increases Arabidopsis seedlings tolerance to NaCl stress and regulates expression of oxidative stress response genes.

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Allantoin is a nitrogenous compound derived from purine catabolism that contributes to nitrogen recycling in plants. Accumulation of allantoin in plant tissues and a potential role in protection of plants from abiotic stress conditions has been identified. The present work shows that application of

Corrigendum to "Allantoin contributes to the stress response in cadmium-treated Arabidopsis roots" [Plant Physiol. Biochem. 119 (October 2017) 103-109].

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Identification, biochemical characterization, and subcellular localization of allantoate amidohydrolases from Arabidopsis and soybean.

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Allantoate amidohydrolases (AAHs) hydrolize the ureide allantoate to ureidoglycolate, CO(2), and two molecules of ammonium. Allantoate degradation is required to recycle purine-ring nitrogen in all plants. Tropical legumes additionally transport fixed nitrogen via allantoin and allantoate into the

Early Senescence in Older Leaves of Low Nitrate-Grown Atxdh1 Uncovers a Role for Purine Catabolism in N Supply.

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The nitrogen (N)-rich ureides allantoin and allantoate, which are products of purine catabolism, play a role in N delivery in Leguminosae. Here, we examined their role as an N source in nonlegume plants using Arabidopsis (Arabidopsis thaliana) plants mutated in XANTHINE DEHYDROGENASE1 (AtXDH1), a

The nucleobase cation symporter 1 of Chlamydomonas reinhardtii and that of the evolutionarily distant Arabidopsis thaliana display parallel function and establish a plant-specific solute transport profile.

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The single cell alga Chlamydomonas reinhardtii is capable of importing purines as nitrogen sources. An analysis of the annotated C. reinhardtii genome reveals at least three distinct gene families encoding for known nucleobase transporters. In this study the solute transport and binding properties

Arabidopsis thaliana Ureide Permease 5 (AtUPS5) connects cell compartments involved in Ureide metabolism.

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Allantoin is a purine oxidative product that serves for long distance transport of organic nitrogen in nodulating legumes and was recently related with stress tolerance in other plants. The subcellular localization of enzymes that lead to allantoin synthesis and degradation indicates that allantoin

AtAAH encodes a protein with allantoate amidohydrolase activity from Arabidopsis thaliana.

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We report the identification and cloning of an allantoate amidohydrolase (allantoate deiminase, EC 3.5.3.9) cDNA from Arabidopsis thaliana (L.) Heynh. This sequence, which we term Arabidopsis thaliana Allantoate Amidohydrolase (AtAAH), was shown to be functional by complementation of Saccharomyces

Ureide metabolism in Arabidopsis thaliana is modulated by C:N balance

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Plants can respond and adapt to changes in the internal content of carbon and nitrogen by using organic compounds that widely differ in their carbon/nitrogen ratio. Among them, the amides asparagine and glutamine are believed to be preferred by most plants, including Arabidopsis. However, increases

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