Characterization of root response to phosphorus supply from morphology to gene analysis in field-grown wheat

The adaptations of root morphology, physiology, and biochemistry to phosphorus supply have been characterized intensively. However, characterizing these adaptations at molecular level is largely neglected under field conditions. Here, two consecutive field experiments were carried out to investigate...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:	Journal of experimental botany. - 1985. - 64(2013), 5 vom: 01. März, Seite 1403-11
1. Verfasser:	Teng, Wan (VerfasserIn)
Weitere Verfasser:	Deng, Yan, Chen, Xin-Ping, Xu, Xiao-Feng, Chen, Ri-Yuan, Lv, Yang, Zhao, Yan-Yan, Zhao, Xue-Qiang, He, Xue, Li, Bin, Tong, Yi-Ping, Zhang, Fu-Suo, Li, Zhen-Sheng
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2013
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Soil Phosphorus 27YLU75U4W

Beschreibung
Zusammenfassung:	The adaptations of root morphology, physiology, and biochemistry to phosphorus supply have been characterized intensively. However, characterizing these adaptations at molecular level is largely neglected under field conditions. Here, two consecutive field experiments were carried out to investigate the agronomic traits and root traits of wheat (Triticum aestivum L.) at six P-fertilizer rates. Root samples were collected at flowering to investigate root dry weight, root length density, arbusular-mycorrhizal colonization rate, acid phosphatase activity in rhizosphere soil, and expression levels of genes encoding phosphate transporter, phosphatase, ribonucleases, and expansin. These root traits exhibited inducible, inhibitory, or combined responses to P deficiency, and the change point for responses to P supply was at or near the optimal P supply for maximum grain yield. This research improves the understanding of mechanisms of plant adaptation to soil P in intensive agriculture and provides useful information for optimizing P management based on the interactions between soil P dynamics and root processes
Beschreibung:	Date Completed 27.08.2013 Date Revised 22.03.2024 published: Print-Electronic Citation Status MEDLINE
ISSN:	1460-2431
DOI:	10.1093/jxb/ert023