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Genome-Wide Association Study of Local Thai Indica Rice Seedlings Exposed to Excessive Iron.
Kaewcheenchai, Reunreudee; Vejchasarn, Phanchita; Hanada, Kousuke; Shirai, Kazumasa; Jantasuriyarat, Chatchawan; Juntawong, Piyada.
Afiliação
  • Kaewcheenchai R; Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
  • Vejchasarn P; Rice Department, Chatuchak Bangkok, 10900, Thailand.
  • Hanada K; Rice Department, Chatuchak Bangkok, 10900, Thailand.
  • Shirai K; Department of Bioscience and Bioinformatics, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka 820-8502, Japan.
  • Jantasuriyarat C; Department of Bioscience and Bioinformatics, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka 820-8502, Japan.
  • Juntawong P; Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
Plants (Basel) ; 10(4)2021 Apr 19.
Article em En | MEDLINE | ID: mdl-33921675
Excess soluble iron in acidic soil is an unfavorable environment that can reduce rice production. To better understand the tolerance mechanism and identify genetic loci associated with iron toxicity (FT) tolerance in a highly diverse indica Thai rice population, a genome-wide association study (GWAS) was performed using genotyping by sequencing and six phenotypic data (leaf bronzing score (LBS), chlorophyll content, shoot height, root length, shoot biomass, and root dry weight) under both normal and FT conditions. LBS showed a high negative correlation with the ratio of chlorophyll content and shoot biomass, indicating the FT-tolerant accessions can regulate cellular homeostasis when encountering stress. Sixteen significant single nucleotide polymorphisms (SNPs) were identified by association mapping. Validation of candidate SNP using other FT-tolerant accessions revealed that SNP:2_21262165 might be associated with tolerance to FT; therefore, it could be used for SNP marker development. Among the candidate genes controlling FT tolerance, RAR1 encodes an innate immune responsive protein that links to cellular redox homeostasis via interacting with abiotic stress-responsive Hsp90. Future research may apply the knowledge obtained from this study in the molecular breeding program to develop FT-tolerant rice varieties.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies / Risk_factors_studies Idioma: En Revista: Plants (Basel) Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Tailândia

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies / Risk_factors_studies Idioma: En Revista: Plants (Basel) Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Tailândia