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GrainGenes Reference Report: TAG-109-1417

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Reference	TAG-109-1417
Title	Identification of drought-inducible genes and differentially expressed sequence tags in barley
Journal	Theoretical and Applied Genetics
Year	2004
Volume	109
Pages	1417-1425
Author	Diab AA [ Show all 6 ]
Abstract	Drought limits cereal yields in several regions of the world and plant water status plays an important role in tolerance to drought. To investigate and understand the genetic and physiological basis of drought tolerance in barley, differentially expressed sequence tags (dESTs) and candidate genes for the drought response were mapped in a population of 167 F SUB 8 recombinant inbred lines derived from a cross between 'Tadmor' (drought tolerant) and 'Er/Apm' (adapted only to specific dry environments). One hundred sequenced probes from two cDNA libraries previously constructed from drought-stressed barley ( Hordeum vulgare L., var. Tokak) plants and 12 candidate genes were surveyed for polymorphism, and 33 loci were added to a previously published map. Composite interval mapping was used to identify quantitative trait loci (QTL) associated with drought tolerance including leaf relative water content, leaf osmotic potential, osmotic potential at full turgor, water-soluble carbohydrate concentration, osmotic adjustment, and carbon isotope discrimination. A total of 68 QTLs with a limit of detection score >=2.5 were detected for the traits evaluated under two water treatments and the two traits calculated from both treatments. The number of QTLs identified for each trait varied from one to 12, indicating that the genome contains multiple genes affecting different traits. Two candidate genes and ten differentially expressed sequences were associated with QTLs for drought tolerance traits
External Databases	Pubmed: 15517148 PubMed: 15517148 https://doi.org/10.1007/s00122-004-1755-0
Map Data	Barley, TxE
Trait Study	[ Hide all but 1 of 14 ] Carbon isotope discrimination, irrigated, Diab04 Carbon isotope discrimination, rainfed, Diab04 Water-soluble carbohydrate accum., 100% RWC, Diab04 Osmotic adjustment, Diab04 Osmotic potential, full turgor, irrigated, Diab04 Osmotic potential, full turgor, drought stressed, Diab04 Osmotic potential, irrigated, Diab04 Osmotic potential, drought stressed, Diab04 Relative water content, irrigated, Diab04 Relative water content, drought stressed, Diab04 Water-soluble carbohydrate conc., full turgor, irrigated, Diab04 Water-soluble carbohydrate conc., full turgor, drought stressed, Diab04 Water-soluble carbohydrate conc., irrigated, Diab04 Water-soluble carbohydrate conc., drought stressed, Diab04
Keyword	barley [ Show all 19 ]

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