title: The physiological, transcriptional and genetic responses of an ozone-sensitive and an ozone tolerant poplar and selected extremes of their F2 progeny.
abstract: Relatively little is known about the transcriptional response or genetic control of response and adaptation of trees to tropospheric ozone exposure. Such understanding is needed as up to 50% of forests, globally, may be subjected to phytotoxic concentrations of ozone. The physiological, transcriptional and genetic response to ozone was examined in Populus trichocarpa and P. deltoides, which show extreme sensitivity and tolerance to ozone, respectively. Using an inbred F2 mapping population derived from these two species, we mapped quantitative trait loci (QTL) for traits associated with ozone response, examined segregation of the transcriptional response to ozone and co-located genes showing divergent responses between tolerant and sensitive genotypes with QTL. QTL were identified linking detrimental effects of ozone with leaf and biomass traits and differential responses were found for key genes involved in ethylene production and response.
authors.affiliation: School of Biological Sciences, University of Southampton, Bassett Crescent East, SO16 7PX, UK.
authors.forename: Nathaniel Robert
authors.initials: NR
authors.lastname: Street
authors.affiliation: School of Biological Sciences, University of Southampton, Bassett Crescent East, SO16 7PX, UK.
authors.forename: Tallis Matthew
authors.initials: TM
authors.lastname: James
authors.affiliation: School of Biological Sciences, University of Southampton, Bassett Crescent East, SO16 7PX, UK.
authors.forename: Tucker
authors.initials: T
authors.lastname: James
authors.affiliation: Plant Biology, Department of Biological and Environmental Sciences, University of Helsinki, FIN-00014 Helsinki, Finland.
authors.forename: Brosché
authors.initials: B
authors.lastname: Mikael
authors.affiliation: Plant Biology, Department of Biological and Environmental Sciences, University of Helsinki, FIN-00014 Helsinki, Finland.
authors.forename: Kangasjärvi
authors.initials: K
authors.lastname: Jaakko
authors.affiliation: Environmental Research Branch, Forest Research, Alice Holt Lodge, Farnham, Surrey GU10 4LH, UK.
authors.forename: Broadmeadow
authors.initials: B
authors.lastname: Mark
authors.affiliation: School of Biological Sciences, University of Southampton, Bassett Crescent East, SO16 7PX, UK. Electronic address: g.taylor@soton.ac.uk.
authors.forename: Gail
authors.initials: G
authors.lastname: Taylor
mesh_terms: D018506:Gene Expression Regulation, Plant / Q000187:drug effects / Q000235:genetics; D020411:Oligonucleotide Array Sequence Analysis; D010126:Ozone / Q000633:toxicity*; D032107:Populus / Q000187:drug effects* / Q000235:genetics*; D040641:Quantitative Trait Loci / Q000235:genetics
chemical_list: D010126:Ozone