Soil control on tradeoffs between silica and cellulose as structural component in sugarcane leaf (Saccharum officinarum)
- De Tombeur, F. , Vanderlinden, C. , Durviaux, A. , Delvaux, B. & Godin, B. (2019). Soil control on tradeoffs between silica and cellulose as structural component in sugarcane leaf (Saccharum officinarum). Geophysical Research Abstracts, 21:
| Type | Journal Article |
| Year | 2019 |
| Title | Soil control on tradeoffs between silica and cellulose as structural component in sugarcane leaf (Saccharum officinarum) |
| Journal | Geophysical Research Abstracts |
| Volume | 21 |
| Abstract |
Soil processes partly govern the terrestrial cycle of silicon (Si). The biological and physiological functions related
to Si deposits in plants are increasingly studied. The understanding of tradeoffs between silicon and cellulose in
leaf structure remains unclear and available studies are restricted to rice plants, mainly under controlled conditions.
The soil processes underlying this tradeoff are, moreover, not inferred despite the well-known impact on
Si bioavailability and soil-to-plant transfer. Here, we study the tradeoff between silica and cellulose in leaves of
sugarcane (Saccharum officinarum L.) cropped on three different soils (Nitisol, Andosol, Vertisol). The soil CaCl2
extractable Si concentration, so-called bioavailable Si, was measured after extraction using CaCl2 solution (0.01M)
for 6h. The total leaf Si concentration was determined after drying, calcination and further alkaline fusion followed
by ash dissolution using concentrated HNO3. Plant silica bodies were physically extracted from sugarcane leaves
through wet digestion. The leaves were observed and mapped for Si by ESEM-EDX. Leaf cellulose, hemicellulose
and lignin concentrations were determined according to the Van Soest method. As expected, total leaf Si concentration
increases with increasing soil CaCl2-extractable Si following the sequence Nitisol |
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| Authors | De Tombeur, F., Vanderlinden, C., Durviaux, A., Delvaux, B., Godin, B. |
