Nitric oxide is the shared signalling molecule in phosphorus- and iron-deficiency-induced formation of cluster roots in white lupin (Lupinus albus).

Annals of Botany
Zhi Bin MengShao Jian Zheng

Abstract

Formation of cluster roots is one of the most specific root adaptations to nutrient deficiency. In white lupin (Lupinus albus), cluster roots can be induced by phosphorus (P) or iron (Fe) deficiency. The aim of the present work was to investigate the potential shared signalling pathway in P- and Fe-deficiency-induced cluster root formation. Measurements were made of the internal concentration of nutrients, levels of nitric oxide (NO), citrate exudation and expression of some specific genes under four P × Fe combinations, namely (1) 50 µm P and 10 µm Fe (+P + Fe); (2) 0 P and 10 µm Fe (-P + Fe); (3) 50 µm P and 0 Fe (+P-Fe); and (4) 0 P and 0 Fe (-P-Fe), and these were examined in relation to the formation of cluster roots. The deficiency of P, Fe or both increased the cluster root number and cluster zones. It also enhanced NO accumulation in pericycle cells and rootlet primordia at various stages of cluster root development. The formation of cluster roots and rootlet primordia, together with the expression of LaSCR1 and LaSCR2 which is crucial in cluster root formation, were induced by the exogenous NO donor S-nitrosoglutathione (GSNO) under the +P + Fe condition, but were inhibited by the NO-specific endogenous scavenger 2-(4-...Continue Reading

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Citations

Dec 1, 2015·Frontiers in Plant Science·Marcela SimontacchiGuillermo E Santa-María
Dec 8, 2015·Frontiers in Plant Science·Carlos LucenaRafael Pérez-Vicente
Sep 10, 2014·Applications in Plant Sciences·Verónica Lira-RuanJoseph G Dubrovsky
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Dec 28, 2016·Plant Signaling & Behavior·Huwei SunYali Zhang
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Nov 5, 2016·Environmental Science and Pollution Research International·Mohd AsgherNafees A Khan
Mar 2, 2018·Physiologia Plantarum·Cécilia GallardoBenjamin Péret
Mar 25, 2019·Journal of Experimental Botany·Agustina BuetMarcela Simontacchi
Apr 16, 2013·Plant Cell Reports·Marcela SimontacchiLorenzo Lamattina
Jan 9, 2017·Journal of Experimental Botany·Xiao Fang ZhuRen Fang Shen
Apr 20, 2017·Frontiers in Plant Science·Cui-Hui SunDa-Gang Hu
May 1, 2020·Frontiers in Plant Science·Andrea GalatroMarcela Simontacchi
Apr 6, 2021·Frontiers in Plant Science·Anjali PandeByung-Wook Yun
Jun 3, 2021·International Journal of Molecular Sciences·María José GarcíaFrancisco Javier Romera

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