title: Proteomic analysis as a tool for investigating arsenic stress in Pteris vittata roots colonized or not by arbuscular mycorrhizal symbiosis.
abstract: Pteris vittata can tolerate very high soil arsenic concentration and rapidly accumulates the metalloid in its fronds. However, its tolerance to arsenic has not been completely explored. Arbuscular mycorrhizal (AM) fungi colonize the root of most terrestrial plants, including ferns. Mycorrhizae are known to affect plant responses in many ways: improving plant nutrition, promoting plant tolerance or resistance to pathogens, drought, salinity and heavy metal stresses. It has been observed that plants growing on arsenic polluted soils are usually mycorrhizal and that AM fungi enhance arsenic tolerance in a number of plant species. The aim of the present work was to study the effects of the AM fungus Glomus mosseae on P. vittata plants treated with arsenic using a proteomic approach. Image analysis showed that 37 spots were differently affected (21 identified). Arsenic treatment affected the expression of 14 spots (12 up-regulated and 2 down-regulated), while in presence of G. mosseae modulated 3 spots (1 up-regulated and 2 down-regulated). G. mosseae, in absence of arsenic, modulated 17 spots (13 up-regulated and 4 down-regulated). Arsenic stress was observed even in an arsenic tolerant plant as P. vittata and a protective effect of AM symbiosis toward arsenic stress was observed.
authors: Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale A. Avogadro, Alessandria, Novara, Vercelli, Italy. elisa.bona@mfn.unipmn.it
authors: Elisa
authors: E
authors: Bona
authors: Francesco
authors: F
authors: Marsano
authors: Nadia
authors: N
authors: Massa
authors: Chiara
authors: C
authors: Cattaneo
authors: Patrizia
authors: P
authors: Cesaro
authors: Emanuele
authors: E
authors: Argese
authors: Luigi
authors: L
authors: Sanità di Toppi
authors: Maria
authors: M
authors: Cavaletto
authors: Graziella
authors: G
authors: Berta
mesh_terms: D001151:Arsenic / Q000378:metabolism / Q000633:toxicity*; D015536:Down-Regulation; D004361:Drug Tolerance; D020869:Gene Expression Profiling; D055137:Glomeromycota; D038821:Mycorrhizae / Q000502:physiology; D018517:Plant Roots / Q000378:metabolism / Q000382:microbiology; D032495:Pteris / Q000187:drug effects / Q000378:metabolism* / Q000382:microbiology; D013312:Stress, Physiological / Q000502:physiology; D013559:Symbiosis / Q000502:physiology; D015854:Up-Regulation
chemical_list: D001151:Arsenic