Strategies of plants to overcome problem soils

2014 Fiscal Year Final Research Report

• Project Area: Integrated analysis of strategies for plant survival and growth in response to global environmental changes
• Project/Area Number: 22119002
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Biological Sciences
• Research Institution: Okayama University
• Principal Investigator: JIAN FENG Ma 岡山大学, その他部局等, 教授 (80260389)
• Co-Investigator(Kenkyū-buntansha): YAMAJI Naoki 岡山大学, 資源植物科学研究所, 准教授 (00444646) ; FUJIWARA Toru 東京大学, 農学生命科学研究科, 教授 (80242163)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 酸性土壌 / 突破力 / 輸送体 / 耐性遺伝子 / アルミニウム毒性 / マンガン毒性

Outline of Final Research Achievements

We identified several rice genes involved in tolerance to Al toxicity, which is a major stress factor in acid soil. We also identified a cis-acting element of transcription factor ART1, which regulates the Al-tolerance genes in rice. Furthermore, we found that 1 kb insertion in the upstream of barley Al-tolerance gene, HvAACT1, increasing number of cis-acting elements of ART1 in the promoter region of Al-tolerance gene HlALMT1 in Yorkshire fog are important for enhanced expression of these genes. We also found that a node-based transporter OsNramp3 functions as switch in response to environmental change of Mn concentration. In addition, we have identified several genes involved in mineral element transport and constructed a mathematical model for Si uptake in rice.

Free Research Field

植物栄養学