Phosphorus and iron deficiencies induce a metabolic reprogramming and affect the exudation traits of the woody plant Fragaria×ananassa

Bibliographische Detailangaben
Veröffentlicht in:	Journal of experimental botany. - 1985. - 66(2015), 20 vom: 15. Okt., Seite 6483-95
1. Verfasser:	Valentinuzzi, Fabio (VerfasserIn)
Weitere Verfasser:	Pii, Youry, Vigani, Gianpiero, Lehmann, Martin, Cesco, Stefano, Mimmo, Tanja
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2015
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Acidification Fragaria×ananassa MATE PM H+ATPases. citrate gene expression metabolomics Plant Proteins mehr... Phosphorus 27YLU75U4W

Beschreibung
Zusammenfassung:	© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com. Strawberries are a very popular fruit among berries, for both their commercial and economic importance, but especially for their beneficial effects for human health. However, their bioactive compound content is strictly related to the nutritional status of the plant and might be affected if nutritional disorders (e.g. Fe or P shortage) occur. To overcome nutrient shortages, plants evolved different mechanisms, which often involve the release of root exudates. The biochemical and molecular mechanisms underlying root exudation and its regulation are as yet still poorly known, in particular in woody crop species. The aim of this work was therefore to characterize the pattern of root exudation of strawberry plants grown in either P or Fe deficiency, by investigating metabolomic changes of root tissues and the expression of genes putatively involved in exudate extrusion. Although P and Fe deficiencies differentially affected the total metabolism, some metabolites (e.g. raffinose and galactose) accumulated in roots similarly under both conditions. Moreover, P deficiency specifically affected the content of galactaric acid, malic acid, lysine, proline, and sorbitol-6-phosphate, whereas Fe deficiency specifically affected the content of sucrose, dehydroascorbic acid, galactonate, and ferulic acid. At the same time, the citrate content did not change in roots under both nutrient deficiencies with respect to the control. However, a strong release of citrate was observed, and it increased significantly with time, being +250% and +300% higher in Fe- and P-deficient plants, respectively, compared with the control. Moreover, concomitantly, a significant acidification of the growth medium was observed in both treatments. Gene expression analyses highlighted for the first time that at least two members of the multidrug and toxic compound extrusion (MATE) transporter family and one member of the plasma membrane H(+)-ATPase family are involved in the response to both P and Fe starvation in strawberry plants
Beschreibung:	Date Completed 19.07.2016 Date Revised 10.03.2022 published: Print-Electronic Citation Status MEDLINE
ISSN:	1460-2431
DOI:	10.1093/jxb/erv364