title: Chloroplast 2010: a database for large-scale phenotypic screening of Arabidopsis mutants.
abstract: Large-scale phenotypic screening presents challenges and opportunities not encountered in typical forward or reverse genetics projects. We describe a modular database and laboratory information management system that was implemented in support of the Chloroplast 2010 Project, an Arabidopsis (Arabidopsis thaliana) reverse genetics phenotypic screen of more than 5,000 mutants (http://bioinfo.bch.msu.edu/2010_LIMS; www.plastid.msu.edu). The software and laboratory work environment were designed to minimize operator error and detect systematic process errors. The database uses Ruby on Rails and Flash technologies to present complex quantitative and qualitative data and pedigree information in a flexible user interface. Examples are presented where the database was used to find opportunities for process changes that improved data quality. We also describe the use of the data-analysis tools to discover mutants defective in enzymes of leucine catabolism (heteromeric mitochondrial 3-methylcrotonyl-coenzyme A carboxylase [At1g03090 and At4g34030] and putative hydroxymethylglutaryl-coenzyme A lyase [At2g26800]) based upon a syndrome of pleiotropic seed amino acid phenotypes that resembles previously described isovaleryl coenzyme A dehydrogenase (At3g45300) mutants. In vitro assay results support the computational annotation of At2g26800 as hydroxymethylglutaryl-coenzyme A lyase.
authors.affiliation: Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: Yan
authors.initials: Y
authors.lastname: Lu
authors.forename: Linda J
authors.initials: LJ
authors.lastname: Savage
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Larson
authors.forename: Curtis G
authors.initials: CG
authors.lastname: Wilkerson
authors.forename: Robert L
authors.initials: RL
authors.lastname: Last
mesh_terms: D017360:Arabidopsis / Q000235:genetics* / Q000378:metabolism; D002736:Chloroplasts / Q000235:genetics*; D004269:DNA, Bacterial / Q000235:genetics; D003628:Database Management Systems; D030541:Databases, Genetic; D016247:Information Storage and Retrieval / Q000379:methods*; D020407:Internet; D016254:Mutagenesis, Insertional; D009154:Mutation; D010641:Phenotype; D012984:Software; D014584:User-Computer Interface
chemical_list: D004269:DNA, Bacterial; C036483:T-DNA