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231225s2000 xx |||||o 00| ||eng c |
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|a 10.1046/j.1469-8137.2000.00595.x
|2 doi
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|a pubmed25n1080.xml
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Iijima, Morio
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Sloughing of cap cells and carbon exudation from maize seedling roots in compacted sand
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| 264 |
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|c 2000
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 19.04.2021
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Sloughing of root cap cells and exudation of mucilage plays an important role in the penetration of compacted soils by roots. For the first time we have quantified the rate of sloughing of root cap cells in an abrasive growth medium that was compacted to create mechanical impedance to root growth. The number of maize (Zea mays) root cap cells sloughed into sand increased as a result of compaction, from 1930 to 3220 d-1 per primary root. This represented a 12-fold increase in the number of cells sloughed per mm root extension (from 60 to >700). We estimated that the whole of the cap surface area was covered with detached cells in compacted sand, compared with c. 7% of the surface area in loose sand. This lubricating layer of sloughed cells and mucilage probably decreases frictional resistance to soil penetration. The total carbon deposited by the root was estimated at c. 110 μg g-1 sand d-1 . Sloughed cells accounted for <10% of the total carbon, the vast majority of carbon being contained in mucilage exudates
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|a Journal Article
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|a Review
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|a Zea mays
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| 650 |
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4 |
|a border cells
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| 650 |
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4 |
|a exudate
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| 650 |
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4 |
|a mechanical impedance
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| 650 |
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4 |
|a mucilage
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| 650 |
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4 |
|a rhizodeposition
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| 650 |
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4 |
|a root elongation
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| 650 |
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4 |
|a soil compaction
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| 700 |
1 |
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|a Griffiths, Bryan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bengough, A Glyn
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t The New phytologist
|d 1984
|g 145(2000), 3 vom: 18. März, Seite 477-482
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:145
|g year:2000
|g number:3
|g day:18
|g month:03
|g pages:477-482
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| 856 |
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