Chemical characterization of cork, phloem and wood from different Quercus suber provenances and trees.

ABSTRACT: Sustainability of cork oak (Quercus suber) forests is threatened by biotic and abiotic factors and characterization of potentially differing genetic resources has therefore gained importance. This work addresses the chemical variation of the three tissues of cork oak stems - cork, phloem and wood - in relation to tree and provenance, looking for genetic chemical diversity and for physiological derived differences. The three tissues differ with cork clearly differentiating regarding summative composition, component ratios and monomeric composition. Cork is the only tissue where suberin is present (42.3% o.d. mass) as the main cell wall component, and it has a high content of extractives (11.7%) with significant proportion of lipophilic compounds. Phloem is more lignified than wood (3

SUBMITTER: Costa R 

PROVIDER: S-EPMC6909139 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature