A Major QTL Confers Rapid Internode Elongation in Response to Water Rise in Deepwater Rice

• Hattori Yoko

  Bioscience and Biotechnology Center, Nagoya University Japan Society for the Promotion of Science

• Miura Kotaro

  Bioscience and Biotechnology Center, Nagoya University Japan Society for the Promotion of Science

• Asano Kenji

  Bioscience and Biotechnology Center, Nagoya University Japan Society for the Promotion of Science

• Yamamoto Eiji

  Bioscience and Biotechnology Center, Nagoya University

• Mori Hitoshi

  Graduate School of Bioagricultural Sciences, Nagoya University

• Kitano Hidemi

  Bioscience and Biotechnology Center, Nagoya University

• Matsuoka Makoto

  Bioscience and Biotechnology Center, Nagoya University

• Ashikari Motoyuki

  Bioscience and Biotechnology Center, Nagoya University

Abstract

To avoid drowning under flooded conditions, deepwater rice responds to rising water level by rapid internode elongation. Quantitative trait locus (QTL) analysis, using a deepwater rice cultivar (Oryza sativa) and a wild rice species (O. rufipogon) with deepwater characteristics, revealed the presence of major QTLs (qTIL12, qNEI12 and qLEI12) in a common chromosomal region that regulates internode elongation. Genetic analysis revealed that a QTL inherited in a dominant manner, was located on the long arm of chromosome 12. A nearly isogenic line (NIL), produced by backcross introduction of a chromosome fragment carrying this major QTL into non-deepwater rice, exhibited a dramatic internode elongation in response to water rise. This indicates that the difference between deepwater rice and non-deepwater rice is associated with the presence of the QTL, and that this sequence is sufficient to confer deepwater characteristics. Although deepwater rice and non-deepwater rice share a common machinery for internode elongation; non-deepwater rice cannot activate the machinery in response to flooding, unlike deepwater rice which harbors this major QTL.<br>

Journal

• Breeding Science

  Breeding Science 57 (4), 305-314, 2007

  Japanese Society of Breeding

Keywords

• rice
• deepwater
• QTL

Details

• CRID: 1390282679699664768
• NII Article ID: 130004146125
• NII Article ID: 110006473839
• NII Book ID: AA11317194
• DOI: 10.1270/jsbbs.57.305
• ISSN: 13473735
• ISSN: 13447610
• NDL BIB ID: 9282646
• Web Site: http://id.ndl.go.jp/bib/9282646
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9282646
• Web Site: http://www.jstage.jst.go.jp/article/jsbbs/57/4/57_4_305/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed