title: Impairment of Respiratory Chain under Nutrient Deficiency in Plants: Does it Play a Role in the Regulation of Iron and Sulfur Responsive Genes?
abstract: Plant production and plant product quality strongly depend on the availability of mineral nutrients. Among them, sulfur (S) and iron (Fe) play a central role, as they are needed for many proteins of the respiratory chain. Plant mitochondria play essential bioenergetic and biosynthetic functions as well as they have an important role in signaling processes into the cell. Here, by comparing several transcriptomic data sets from plants impaired in their respiratory function with the genes regulated under Fe or S deficiencies obtained from other data sets, nutrient-responsive genes potentially regulated by hypothetical mitochondrial retrograde signaling pathway are evidenced. It leads us to hypothesize that plant mitochondria could be, therefore, required for regulating the expression of key genes involved both in Fe and S metabolisms.
authors.affiliation: Dipartimento di Scienze Agrarie e Ambientali-Produzione, Territorio Agroenergia, Università degli Studi di Milano Milan, Italy.
authors.forename: Gianpiero
authors.initials: G
authors.lastname: Vigani
authors.affiliation: Biochimie and Physiologie Moléculaire des Plantes, Centre National de la Recherche Scientifique/Institut National de la Recherche Agronomique/SupAgro/UM2 Montpellier, France.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Briat
keywords: iron; mitochondria dysfunctions; nutrient-responsive genes; respiratory chain; sulfur