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

Plant physiology - 1 Nov 2018

Soltabayeva Aigerim, Srivastava Sudhakar, Kurmanbayeva Assylay, Bekturova Aizat, Fluhr Robert, Sagi Moshe

Abstract excerpt

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 catalytic bottleneck in purine catabolism. Older leaves of the Atxdh1 mutant exhibited early senescence, lower soluble...

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Identifiers

PMID: 30190419
DOI: 10.1104/pp.18.00795
PMCID: PMC6236613

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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