Evolution of Iron Acquisition in Higher Plants

Autor:	Dirk V. Charlson, Randy C. Shoemaker
Rok vydání:	2006
Předmět:	Expressed sequence tag Siderophore biology Physiology food and beverages biology.organism_classification chemistry.chemical_compound Gymnosperm chemistry Phylogenetics Molecular marker Botany Agronomy and Crop Science Plant nutrition Gene Iron acquisition
Zdroj:	Journal of Plant Nutrition. 29:1109-1125
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904160600689266
Popis:	In the plant kingdom, two iron (Fe) acquisition strategies exist. All plant species, except grasses, acquire Fe2 + from soil after reduction of Fe3 + using the Strategy I mechanism. Although expressing many Strategy I activities, grasses employ the Strategy II mechanism, which involves the synthesis, secretion, and uptake of phytosiderophores that chelate Fe3 + from soil. In recent years, several genes involved in Fe acquisition have been identified in plants. This study examined the phylogenetic distribution of iron-acquisition genes of five dicots, five grasses, and one gymnosperm. Both Strategy I and II plant species possessed either all or some genes for Strategy I. For Strategy II genes, only the five grasses expressed genes for phytosiderophore synthesis. Due to the conservation of Strategy I genes among both Strategy I and II species and absence of Strategy II genes from dicot and gymnosperm species, we concluded that Strategy II in grasses was derived relative to Strategy I.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a2ac795e972dcc8c4045e98d618b4002 https://doi.org/10.1080/01904160600689266 Zobrazit plný text záznamu