title: Regions of the bread wheat D genome associated with variation in key photosynthesis traits and shoot biomass under both well watered and water deficient conditions.
abstract: A quantitative trait locus (QTL) approach was taken to reveal the genetic basis in wheat of traits associated with photosynthesis during a period of exposure to water deficit stress. The performance, with respect to shoot biomass, gas exchange and chlorophyll fluorescence, leaf pigment content and the activity of various ascorbate-glutathione cycle enzymes and catalase, of a set of 80 wheat lines, each containing a single chromosomal segment introgressed from the bread wheat D genome progenitor Aegilops tauschii, was monitored in plants exposed to various water regimes. Four of the seven D genome chromosomes (1D, 2D, 5D, and 7D) carried clusters of both major (LOD >3.0) and minor (LOD between 2.0 and 3.0) QTL. A major QTL underlying the activity of glutathione reductase was located on chromosome 2D, and another, controlling the activity of ascorbate peroxidase, on chromosome 7D. A region of chromosome 2D defined by the microsatellite locus Xgwm539 and a second on chromosome 7D flanked by the marker loci Xgwm1242 and Xgwm44 harbored a number of QTL associated with the water deficit stress response.
authors.affiliation: Siberian Institute of Plant Physiology and Biochemistry SB RAS, P.O. Box 317, 664033, Irkutsk, Russia. svetlanaosipova2@mail.ru.|Irkutsk State University, 5, Sukhe-Bator St, 664003, Irkutsk, Russia. svetlanaosipova2@mail.ru.
authors.forename: Svetlana
authors.identifier: http://orcid.org/0000-0001-7025-8590
authors.initials: S
authors.lastname: Osipova
authors.affiliation: Siberian Institute of Plant Physiology and Biochemistry SB RAS, P.O. Box 317, 664033, Irkutsk, Russia.
authors.forename: Alexey
authors.initials: A
authors.lastname: Permyakov
authors.affiliation: Siberian Institute of Plant Physiology and Biochemistry SB RAS, P.O. Box 317, 664033, Irkutsk, Russia.
authors.forename: Marina
authors.initials: M
authors.lastname: Permyakova
authors.affiliation: Institute of Cytology and Genetics SB RAS, Lavrentiev Ave., 10, 630090, Novosibirsk, Russia.
authors.forename: Tatyana
authors.initials: T
authors.lastname: Pshenichnikova
authors.affiliation: National Research Irkutsk State Technical University, 83, Lermontov St, 664074, Irkutsk, Russia.
authors.forename: Vasiliy
authors.initials: V
authors.lastname: Verkhoturov
authors.affiliation: Siberian Institute of Plant Physiology and Biochemistry SB RAS, P.O. Box 317, 664033, Irkutsk, Russia.
authors.forename: Alexandr
authors.initials: A
authors.lastname: Rudikovsky
authors.affiliation: Siberian Institute of Plant Physiology and Biochemistry SB RAS, P.O. Box 317, 664033, Irkutsk, Russia.
authors.forename: Elena
authors.initials: E
authors.lastname: Rudikovskaya
authors.affiliation: Siberian Institute of Plant Physiology and Biochemistry SB RAS, P.O. Box 317, 664033, Irkutsk, Russia.
authors.forename: Alexandr
authors.initials: A
authors.lastname: Shishparenok
authors.affiliation: Institute of Cytology and Genetics SB RAS, Lavrentiev Ave., 10, 630090, Novosibirsk, Russia.
authors.forename: Alexey
authors.initials: A
authors.lastname: Doroshkov
authors.affiliation: Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstrasse 3, 06466, Gatersleben, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Börner
mesh_terms: D018533:Biomass; D002338:Carotenoids / Q000032:analysis; D002734:Chlorophyll / Q000032:analysis; D002874:Chromosome Mapping; D003433:Crosses, Genetic; D005453:Fluorescence; D018745:Genome, Plant; D018895:Microsatellite Repeats; D010641:Phenotype; D010788:Photosynthesis / Q000235:genetics*; D006109:Poaceae / Q000235:genetics; D040641:Quantitative Trait Loci; D013312:Stress, Physiological; D014908:Triticum / Q000235:genetics*; D014867:Water / Q000502:physiology*
chemical_list: D014867:Water; D002734:Chlorophyll; D002338:Carotenoids
keywords: Asc-GSH cycle enzyme activity; Chlorophyll fluorescence; Gas exchange; Leaf pigment content; QTL mapping; Water deficit stress; Wheat