Molecular characterization of PVAS3 : an asparagine synthetase gene from common bean prevailing in developing organs

Copyright © 2013 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 170(2013), 17 vom: 15. Nov., Seite 1484-90
1. Verfasser: Gálvez-Valdivieso, Gregorio (VerfasserIn)
Weitere Verfasser: Alamillo, Josefa Muñoz, Fernández, Javier, Pineda, Manuel
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't 9-fluorenylmethoxycarbonyl chloride AS Asn Asparagine synthetase Common bean Development Expression analysis FMOC mehr... FW HPLC OPA Ureides asparagine asparagine synthetase (EC 6.3.5.4) fresh weight high performance liquid chromatography o-phthalaldehyde Plant Proteins Asparagine 7006-34-0 Aspartate-Ammonia Ligase EC 6.3.1.1 Nitrogen N762921K75
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100 1 |a Gálvez-Valdivieso, Gregorio  |e verfasserin  |4 aut 
245 1 0 |a Molecular characterization of PVAS3  |b an asparagine synthetase gene from common bean prevailing in developing organs 
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520 |a Copyright © 2013 Elsevier GmbH. All rights reserved. 
520 |a In common bean, asparagine synthetase (AS; EC 6.3.5.4) is encoded by three members of a multigene family called PVAS1, PVAS2 and PVAS3. Two of these genes, PVAS1 and PVAS2, have been extensively studied, but little is known about PVAS3, remaining unclear whether PVAS3 function is redundant to the other AS or if it plays a specific role in Phaseolus vulgaris metabolism. In this work, we used a molecular approach to characterize PVAS3 expression and to gain some knowledge about its physiological function. We showed that, in contrast to PVAS1 and PVAS2, PVAS3 was expressed in all organs analyzed. Interestingly, PVAS3 was the AS gene most highly expressed in nodules, leaves and pods at the earliest stages of development, and its expression decreased as these organs developed. Expression of PVAS3 parallels the accumulation of AS protein and the asparagine content during the earliest stages of nodule, leaf and pod development, suggesting an important role for PVAS3 in the synthesis of asparagine in that period. Furthermore, PVAS3 was not repressed by light, as most class-II AS genes. Surprisingly, fertilization of nodulated plants with nitrate or ammonium, conditions that induce PVAS1 and PVAS2 and the shift from ureides to amide synthesis, repressed the expression of PVAS3 in nodules and roots. The possible implications of this regulation are discussed 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a 9-fluorenylmethoxycarbonyl chloride 
650 4 |a AS 
650 4 |a Asn 
650 4 |a Asparagine synthetase 
650 4 |a Common bean 
650 4 |a Development 
650 4 |a Expression analysis 
650 4 |a FMOC 
650 4 |a FW 
650 4 |a HPLC 
650 4 |a OPA 
650 4 |a Ureides 
650 4 |a asparagine 
650 4 |a asparagine synthetase (EC 6.3.5.4) 
650 4 |a fresh weight 
650 4 |a high performance liquid chromatography 
650 4 |a o-phthalaldehyde 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a Asparagine  |2 NLM 
650 7 |a 7006-34-0  |2 NLM 
650 7 |a Aspartate-Ammonia Ligase  |2 NLM 
650 7 |a EC 6.3.1.1  |2 NLM 
650 7 |a Nitrogen  |2 NLM 
650 7 |a N762921K75  |2 NLM 
700 1 |a Alamillo, Josefa Muñoz  |e verfasserin  |4 aut 
700 1 |a Fernández, Javier  |e verfasserin  |4 aut 
700 1 |a Pineda, Manuel  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Journal of plant physiology  |d 1979  |g 170(2013), 17 vom: 15. Nov., Seite 1484-90  |w (DE-627)NLM098174622  |x 1618-1328  |7 nnns 
773 1 8 |g volume:170  |g year:2013  |g number:17  |g day:15  |g month:11  |g pages:1484-90 
856 4 0 |u http://dx.doi.org/10.1016/j.jplph.2013.06.002  |3 Volltext 
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