Genetic studies of response to chilling acclimation under cold climate in rice

2011 Fiscal Year Final Research Report

• Project/Area Number: 21580001
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Breeding science
• Research Institution: Obihiro University of Agriculture and Veterinary Medicine
• Principal Investigator: ONISHI Kazumitsu 帯広畜産大学, 畜産学部, 助教 (50526704)
• Co-Investigator(Kenkyū-buntansha): SANO Yoshio 北海道大学, 農学研究院, 教授 (70109528)
• Project Period (FY): 2009 – 2011
• Keywords: イネ / 低温抵抗性 / QTL / 遺伝資源 / 環境適応

Research Abstract

Tolerance to low temperature can be enhanced by pre-exposure to low, non-harmful temperatures, a process known as acclimation. The effects of acclimation on chilling tolerance in species from tropical and subtropical regions are not well understood. Therefore, we investigated whether acclimation improved chilling tolerance at the plumule and seedling stages in Asian rice. Present results suggest that acclimation capacity, as well as intrinsic chilling tolerance, might contribute to local adaptation. In addition, QTLs involved in acclimated chilling tolerance at the plumule stage are different from those involved in intrinsic chilling tolerance. Furthermore, fine mapping of QTL for chilling tolerance at the plumule stage on the chromosome 11 (qCTP11) was conducted. Further genetic studies of chilling tolerance involving the process of acclimation will contribute to the development of new varieties with higher chilling tolerance in Asian rice.

Research Products

• [Journal Article] Effects of acclimation on chilling tolerance in Asian cultivated and wild rice (2011)
  • Author(s): Baruah, A. R., Onishi, K., Oguma, Y., Ishigo-Oka, N., Uwatoko, N. and Sano, Y.
  • Journal Title: Euphytica Volume: 181 Pages: 293-303
  • DOI: doi:10.1007/s10681-011-0427-9
  • Peer Reviewed
• [Journal Article] Detection of a novel quantitative trait locus for cold tolerance at the booting stage derived from a tropical japonica rice variety Silewah (2011)
  • Author(s): Mori, M., Onishi, K., Tokizono, Y., Shinada, H., Yoshimura, T., Numao, Y., Miura, H. and Sato T.
  • Journal Title: Breeding Science Volume: 61 Pages: 61-68
  • DOI: doi:10.1270/jsbbs.61.61
  • Peer Reviewed
• [Journal Article] Genetic control of phenotypic plasticity in Asian cultivated rice and wild rice in response to nutrient and density changes (2010)
  • Author(s): Shimizu, H., Maruoka, M., Ichikawa, N., Baruah, A. R., Uwatoko, N., Sano, Y. and Onishi, K.
  • Journal Title: Genome Volume: 53 Pages: 211-223
  • DOI: doi:10.1139/G09-099
  • Peer Reviewed
• [Presentation] 栽培および野生イネにおける低温順化反応性の解析 (2011)
  • Author(s): Baruah A. R.・小熊恭代・石郷岡典子・上床修弘・佐野芳雄・大西一光
  • Organizer: 日本育種学会第120回講演会
  • Place of Presentation: 福井県立大学(福井県小浜市)
  • Year and Date: 2011-09-23
• [Presentation] 海道在来品種より見いだされたイネ幼芽期低温抵抗性QTL (qCTP11)の解析 (2010)
  • Author(s): 大西一光・時園佳朗・Baruah A R.・品田博史・佐藤毅・三浦秀穂・佐野芳雄
  • Organizer: 日本育種学会第118回講演会
  • Place of Presentation: 秋田県立大学(秋田市)
  • Year and Date: 2010-09-24
• [Presentation] 栽培および野生イネにおける生育初期の低温抵抗性に関する遺伝解析 (2009)
  • Author(s): 時園佳朗・Baruah AR・石郷岡典子・安達美江子・小熊恭代・佐野芳雄・大西一光
  • Organizer: 日本育種学会第116回講演会
  • Place of Presentation: 北海道大学
  • Year and Date: 2009-09-26