Effect of Fe deficiency on mitochondrial alternative NAD(P)H dehydrogenases in cucumber roots

Journal of Plant Physiology
Gianpiero Vigani, Graziano Zocchi

Abstract

Iron deficiency affects the function of the respiratory chain, primarily at the complex I and complex II levels. Because plant mitochondria possess alternative NAD(P)H dehydrogenases located in the inner membrane, oxidizing NAD(P)H from both cytosol and matrix, we investigated these activities in mitochondria of Fe-deficient roots. External and internal NAD(P)H dehydrogenase activity increased in Fe-deficient mitochondria. Accordingly, NDB1 protein strongly accumulated, while NDA1 did not show differences in Fe-deficient roots. The data presented support, for the first time, the hypothesis that Fe deficiency induces the alternative NAD(P)H dehydrogenases, bypassing the impaired complex I.

Citations

Dec 3, 2010·BMC Plant Biology·Silvia DonniniGraziano Zocchi
Sep 10, 2015·The New Phytologist·Patricia Sisó-TerrazaAna Álvarez-Fernández
Mar 26, 2016·Frontiers in Plant Science·Ana F López-MillánKatrin Philippar
Dec 20, 2015·Journal of Experimental Botany·Gianpiero ViganiNaoko K Nishizawa
Apr 15, 2011·Trends in Plant Science·Cécile NouetMarc Hanikenne
Sep 5, 2015·Journal of Plant Physiology·Monika Ostaszewska-BugajskaIzabela M Juszczuk
Oct 14, 2016·The New Phytologist·Gianpiero ViganiIrene Murgia
Jan 5, 2020·Plant Molecular Biology·Manuel BalpardaDiego F Gomez-Casati

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