Physiological mechanism of leaf hair development in rice
Project/Area Number |
16H07046
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Crop production science
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Research Institution | Kyushu University |
Principal Investigator |
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Project Period (FY) |
2016-08-26 – 2018-03-31
|
Project Status |
Completed (Fiscal Year 2017)
|
Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
Keywords | 葉毛 / 水利用効率 / 温度応答 / 野生イネ / 遺伝子発現 / イネ / 作物生理学 / 栽培学 / 作物学 / 植物生理学 / 分子生物学 / 遺伝学 |
Outline of Final Research Achievements |
Leaf morphological traits that affect water use efficiency are not well known. I examined whether leaf hairiness improves water use efficiency in rice. A chromosome segment introgression line (IL-hairy) of wild Oryza nivara with the genetic background of Oryza sativa cultivar ‘IR24’ had high leaf hair. The leaf hairs developed along small vascular bundles. IL-hairy plants had a warmer leaf surface in sunlight, probably due to increased boundary layer resistance. They had a lower transpiration rate, resulting in higher photosynthetic water use efficiency. Linkage analysis in F2 and F3 populations showed that the trait was governed by a single gene, designated BLANKET LEAF (BKL), on chromosome 6. Furthermore, development of leaf hairs was suppressed under high temperature condition, and a candidate gene of BKL was identified by gene expression analysis.
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Report
(3 results)
Research Products
(14 results)
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[Presentation] ベトナム北部で栽培したWFP遺伝子導入イネ系統への実肥施用が収量,収量構成要素および非構造性炭水化物の再転流に及ぼす影響2017
Author(s)
仲戸 文音, 濱岡 範光, Dinh Thi Ngoc Mai, Dinh Mai Thuy Linh, Nguyen Trung Duc, Tang Thi Hanh, Pham Van Cuong, 荒木 卓哉, 芦苅 基行, 望月 俊宏, 安井 秀, 吉村 淳
Organizer
日本作物学会 第244回講演会
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