QTL analysis of aluminum resistance in rice (Oryza sativa L.)

Y. Xue, J. M. Wan, L. Jiang, L. L. Liu, N. Su, H. Q. Zhai, J. F. Ma

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Abstract

Aluminum (Al) toxicity is considered as one of the primary causes of low-rice productivity in acid soils. In the present study, quantitative trait loci (QTLs) controlling Al resistance based on relative root elongation (RRE) were dissected using a complete linkage map and a recombinant inbred lines (RILs) derived from a cross of Al-tolerant japonica cultivar Asominori (Oryza sativa L.) and Al-sensitive indica cultivar IR24 (O. sativa L.). A total of three QTLs (qRRE-1, qRRE-9, and qRRE-11) were detected on chromosomes 1, 9, and 11 with LOD score ranging from 2.64 to 3.60 and the phenotypic variance explained from 13.5 to 17.7%. The Asominori alleles were all associated with Al resistance at all the three QTLs. The existence of these QTLs was confirmed using Asominori chromosome segment substitution lines (CSSLs) in IR24 genetic background (IAS). By QTL comparative analysis, the two QTLs (qRRE-1and qRRE-9) on chromosomes 1 and 9 appeared to be consistent among different rice populations while qRRE-11 was newly detected and syntenic with a major Al resistance gene on chromosome 10 of maize. This region may provide an important case for isolating genes responsible for different mechanisms of Al resistance among different cereals. These results also provide the possibilities of enhancing Al resistance in rice breeding program by marker-assisted selection (MAS) and pyramiding QTLs.

Original languageEnglish
Pages (from-to)375-383
Number of pages9
JournalPlant and Soil
Volume287
Issue number1-2
DOIs
Publication statusPublished - Sep 1 2006

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Keywords

  • Aluminum resistance
  • Chromosome segment substitution lines
  • Quantitative trait loci analysis
  • Recombinant inbred lines
  • Rice (Oryza sativa L.)

ASJC Scopus subject areas

  • Soil Science
  • Plant Science

Cite this

Xue, Y., Wan, J. M., Jiang, L., Liu, L. L., Su, N., Zhai, H. Q., & Ma, J. F. (2006). QTL analysis of aluminum resistance in rice (Oryza sativa L.). Plant and Soil, 287(1-2), 375-383. https://doi.org/10.1007/s11104-006-9086-3