Drying of mucilage causes water repellency in the rhizosphere of maize: measurements and modelling
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- 作者：Mutez Ali Ahmed ; Eva Kroener ; Pascal Benard ; Mohsen Zarebanadkouki…
- 关键词：Root mucilage ; Contact angle ; Maize ; Rhizosphere ; Hydrophobicity ; Pore ; network model ; Neutron radiography
- 刊名：Plant and Soil
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：407
- 期：1-2
- 页码：161-171
- 全文大小：1,862 KB
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Life Sciences
Plant Sciences
Soil Science and Conservation
Plant Physiology
Ecology - 出版者：Springer Netherlands
- ISSN：1573-5036
- 卷排序：407
文摘
Background and AimsAlthough maize roots have been extensively studied, there is limited information on the effect of root exudates on the hydraulic properties of maize rhizosphere. Recent experiments suggested that the mucilaginous fraction of root exudates may cause water repellency of the rhizosphere. Our objectives were: 1) to investigate whether maize rhizosphere turns hydrophobic after drying and subsequent rewetting; 2) to test whether maize mucilage is hydrophobic; and 3) to find a quantitative relation between rhizosphere rewetting, particle size, soil matric potential and mucilage concentration.