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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Tissue-Specific Cell Wall Hydration in Sugarcane Stalks

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Maziero, Priscila [1, 2] ; Jong, Jennifer [3] ; Mendes, Fernanda M. [1] ; Goncalves, Adilson R. [2] ; Eder, Michaela [4] ; Driemeier, Carlos [1]
Total Authors: 6
[1] CTBE CNPEM, Lab Nacl Ciencia & Tecnol Bioetanol, BR-13083970 Campinas, SP - Brazil
[2] EEL USP, Dept Biotecnol, BR-12060281 Sao Paulo - Brazil
[3] Univ Calif Berkeley, Coll Nat Resources, Berkeley, CA 94720 - USA
[4] Max Planck Inst Colloids & Interfaces, Dept Biomat, D-14476 Potsdam - Germany
Total Affiliations: 4
Document type: Journal article
Source: Journal of Agricultural and Food Chemistry; v. 61, n. 24, p. 5841-5847, JUN 19 2013.
Web of Science Citations: 10

Plant cell walls contain water, especially under biological and wet processing conditions. The present work characterizes this water in tissues of sugarcane stalks. Environmental scanning electron microscopy shows tissue deformation upon drying. Dynamic vapor sorption determines the equilibrium and kinetics of moisture uptake. Thermoporometry by differential scanning calorimetry quantifies water in nanoscale pores. Results show that cell walls from top internodes of stalks are more deformable, slightly more sorptive to moisture, and substantially more porous. These differences of top internode are attributed to less lignified walls, which is confirmed by lower infrared spectral signal from aromatics. Furthermore, cell wall nanoscale porosity, an architectural and not directly compositional characteristic, is shown to be tissue-specific. Nanoscale porosities are ranked as follows: pith parenchyma > pith vascular bundles > rind. This ranking coincides with wall reactivity and digestibility in grasses, suggesting that nanoscale porosity is a major determinant of wall recalcitrance. (AU)

FAPESP's process: 09/00874-5 - Topochemical studies during cellulosic ethanol production from sugarcane bagasse and straw
Grantee:Priscila Maziero
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 10/05523-3 - Nanomorphologic changes of sugarcane lignocellulosic matter
Grantee:Carlos Eduardo Driemeier
Support type: Research Grants - Young Investigators Grants