Morphological and physiological studies on densely branched lateral roots triggered by soil phosphate
Project/Area Number |
26850008
|
Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Multi-year Fund |
Research Field |
Crop production science
|
Research Institution | Osaka Prefecture University |
Principal Investigator |
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
|
Keywords | リン酸獲得 / 低リン応答反応 / 根系構造 / セスバニア / 土壌微生物 / リン獲得 / ダイズコアコレクション / 根系 / リン吸収 / アーバスキュラー菌根菌 / リン脂質脂肪酸 / 特殊根 |
Outline of Final Research Achievements |
Densely branched lateral roots (DBLRs) in Sesbania cannabina are formed in response to patchily distributed phosphorus (P). DBLR formation is one of the P-acquisition strategies of S. cannabina. DBLRs were produced with secondary to quaternary lateral roots after primary roots passed near P fertilizer. Pi content per DBLR increased as DBLRs develop, resulting in higher shoot growth. Under P-deficient conditions, the activity of PEPC and APase increased in non-DBLR roots, but these activities were significantly lower in DBLRs in the same plants. AMF inoculation changed the root system architecture by significantly decreasing the numbers of DBLRs and AMF colonization was lower in DBLR formation compared to normal roots. Our results indicate that DBLR formation is one of the P-coacquisition strategies of S. cannabina. The traits of roots that form DBLR are clearly different in morphological, biochemical response and AMF symbiosis from non-DBLR roots.
|
Report
(4 results)
Research Products
(5 results)