Abstract
ABSTRACT Many tropical trees have high canopies and their leaves are not accessible. Thus, the use of tissue from a more accessible organ (cambium) for DNA extraction may be an alternative for molecular studies. We adapted a feasible methodology for extracting genomic DNA from cambium tissue harvested in the field for the assessment with PCR. We tested three storage conditions (two buffers and a silica gel) and four periods of time after harvest. We used previously described protocols and tested them on three species that occur in Amazonian forests and other biomes: Anadenanthera peregrina var. peregrina, Cedrela fissilis, and Ceiba speciosa. Our protocol obtained suitable PCR-grade genomic DNA for DNA sequencing and microsatellite genotyping. We recommend the use of silica for long-term storage and the buffer with ascorbic acid for short-term storage.
Highlights
Um método viável para extrair DNA do câmbio de árvores de dossel alto: da coleta à aplicação
The use of commercial kits allows for the quick extraction of genomic DNA from leaves but adds cost to the analysis
We aimed to adapt a feasible methodology for extracting genomic DNA from cambium tissue, from the field sampling to the assessment of the DNA with PCR
Summary
Um método viável para extrair DNA do câmbio de árvores de dossel alto: da coleta à aplicação. A feasible method to extract DNA from the cambium of high-canopy trees: from harvest to assessment. We aimed to adapt a feasible methodology for extracting genomic DNA from cambium tissue, from the field sampling to the assessment of the DNA with PCR. We sampled cambium tissue from three tree species that are native to the Amazon region and other Brazilian biomes: Anadenanthera peregrina (L.) Speg.
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