Impairment of respiratory chain under nutrient deficiency in plants: does it play a role in the regulation of iron and sulfur responsive genes?

Gianpiero Vigani (1) , Jean-Francois Briat (2)

1 Dipartimento di Scienze Agrarie e Ambientali-Produzione, Territorio Agroenergia
2 BPMP - Biochimie et Physiologie Moléculaire des Plantes

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 mitochondria' 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.

Mots clés: iron; mitochondria dysfunctions; nutrient-responsive genes; respiratory chain; sulfur; sulphur s (symbol)

Mots clés: chaînerespiratoire; soufre; fer; chaîne respiratoire mitochondriale

Domaines: Sciences du Vivant [q-bio]

Gianpiero Vigani, Jean-Francois Briat. Impairment of respiratory chain under nutrient deficiency in plants: does it play a role in the regulation of iron and sulfur responsive genes?. Frontiers in Plant Science, 2016, 6, pp.1185. ⟨10.3389/fpls.2015.01185⟩. ⟨hal-01486493⟩