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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.)

Chemical composition of flavonoids and styrylpyrones and the genetic variability of isozymes in natural populations of Cryptocarya mandioccana Meisner (Lauraceae)

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Author(s):
Moraes, Pedro L. R. de ; Nehme, Claudia J. ; Alves, Marcelo C. ; Derbyshire, Maria Teresa V. C. ; Cavalheiro, Alberto J.
Total Authors: 5
Document type: Journal article
Source: Biochemical Systematics and Ecology; v. 35, n. 4, p. 233-244, Apr. 2007.
Field of knowledge: Physical Sciences and Mathematics - Chemistry
Abstract

The chemical composition of leaves of 57 trees of Cryptocarya mandioccana from three populations of southeastern Brazil was investigated through HPLC, assaying six flavonoids, seven styrylpyrones, and seven unidentified compounds. From 51 of the former trees, genotypes were obtained from 40 polymorphic loci of 19 isozymes. Cluster analyses of the phytochemical and genetical variation revealed that trees exhibited four chemotypes and five clusters from isozymes, respectively. Discriminant analyses from selected variables of the isozymic and chemical data sets were performed, respectively, in relation to the four chemotypes and the five isozyme clusters. The classification of individuals presented respective error estimates of 9.16% and 13.57%, indicating that the genetic data could explain the clusters from chernotypes and vice versa at acceptable error levels. Linear regressions with Dummy variable showed significant association of locus Skdh-2 with quercetin-3-O-beta-D-glucopyranoside and cryptofolione, indicating that its alleles would be responsible for the chemotype variation between individuals. (AU)

FAPESP's process: 99/05818-2 - Genetic structure of natural populations of Cryptocarya spp. (Lauraceae) through isoenzymatic and DNA markers
Grantee:Maria Teresa Vitral de Carvalho Derbyshire
Support type: BIOTA-FAPESP Program - Regular Research Grants