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The physiological implications of urease inhibitors on N metabolism during germination of Pisum sativum and Spinacea oleracea seeds

Ariz, Idoia and Cruchaga, Saioa and Lasa, Berta and Moran, Jose F. and Jauregui, Ivan and Aparicio-Tejo, Pedro M. (2012) The physiological implications of urease inhibitors on N metabolism during germination of Pisum sativum and Spinacea oleracea seeds. Journal of Plant Physiology, 169 (7). pp. 673-681. ISSN 0176-1617

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Abstract

The development of new nitrogen fertilizers is necessary to optimize crop production whilst improving the environmental aspects arising from the use of nitrogenous fertilization as a cultural practice. The use of urease inhibitors aims to improve the efficiency of urea as a nitrogen fertilizer by preventing its loss from the soil as ammonia. However, although the action of urease inhibitors is aimed at the urease activity in soil, their availability for the plant may affect its urease activity. The aim of this work was therefore to evaluate the effect of two urease inhibitors, namely acetohydroxamic acid (AHA) and N-(n-butyl) thiophosphoric triamide (NBPT), on the germination of pea and spinach seeds. The results obtained show that urease inhibitors do not affect the germination process to any significant degree, with the only process affected being imbibition in spinach, thus also suggesting different urease activities for both plants. Our findings therefore suggest an activity other than the previously reported urolytic activity for urease in spinach. Furthermore, of the two inhibitors tested, NBPT was found to be the most effective at inhibiting urease activity, especially in pea seedlings. © 2012 Elsevier GmbH.

Item Type: Article
Journal or Publication Title: Journal of Plant Physiology
Uncontrolled Keywords: Acetohydroxamic acid (AHA) ; Germination ; N-(n-butyl) thiophosphoric triamide (NBPT) ; Pea ; Spinach ; Urease inhibitors
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 84295
Deposited By: ep_importer_pure
Deposited On: 25 Jan 2017 09:52
Refereed?: Yes
Published?: Published
Last Modified: 22 Nov 2017 23:57
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/84295

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