| Project/Area Number |
13460031
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MATOH Toru Kyoto University, Graduate School of Agriculture, Associate Professor, 農学研究科, 助教授 (50157393)
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| Co-Investigator(Kenkyū-buntansha) |
MA Jean-feq Kagawa University, Faculty of Agriculture, Associate Professor, 農学部, 助教授 (80260389)
FUJIWARA Toru University of Tokyo, Graduate School of Agriculture and Life Science, Associate Professor, 農学生命科学研究科, 助教授 (80242163)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥9,500,000 (Direct Cost: ¥9,500,000)
Fiscal Year 2002: ¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 2001: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | Bovon / Calcium / Auminium / Apoplast / Cell wall / Edaphic stress / 土壌ストレス / ペクチン / KDO合成酵素 / ラムノガラクツロナンII / マイクロアレイ |
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| Research Abstract |
We have revealed that the essential plant nutrient element boron (B) works to cross-link pectic polysaccharide chains at the rhamnogalacturonan II (RG-II) sites along the chain. In the cross-link, Ca^<2+> ions are also involved to connect the chains, but Al ion interferes with the bonding. Matoh and his colleague purified some enzymes which are responsible for the sugars which particular to RG-II, a KDO synthase, and its DNA was cloned and sequenced. Fujiwara et al revealed that B is actively taken up by higher plants through a B-specific membrane proteins. The protein and its DNA was cloned and sequenced. The B transporter works in the endodermis. Ma studied the binding sites for Al in barley root cell walls. Aluminum ion binds to cell wall pectic polysaccharides, but it works the adverse effect only by which binds to the outer epidermis.
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