03064naa a2200457 a 450000100080000000500110000800800410001910000290006024501090008926000090019852018530020765000230206065000150208365000110209865000150210965000110212465000230213565000080215865000150216665000100218165000160219165300200220765300090222765300240223665300240226065300160228465300180230065300170231865300160233565300100235165300120236165300160237365300150238965300190240470000180242370000250244170000200246670000220248670000180250877300800252621118072019-11-11       2019    bl uuuu     u00u1 u    #d1 aAZÊVEDO, H. S. F. da S.  aPreservation and maceration of amazon açai leaflet Tissue to obtain genomic DNA.h[electronic resource]  c2019  aThe objective of this study was to test the efficiency of preservation and maceration methods for Euterpe precatoria leaflet tissue to obtain genomic DNA for molecular studies. The leaflets of E. precatoria were collected in an experimental field at Embrapa Acre, Brazil. The study was conducted in a completely randomized design with 10 replicates, in a 12 × 2 factorial structure, with 12 storage treatments (fresh; lyophiliser 3 days; refrigerator 3, 5, and 7 days; silica gel 7, 10, 20, and 30 days; and transport buffer 3, 5, and 7 days) and two leaf tissue maceration methods (liquid nitrogen and the TissueLyser®). Statistically significant differences in the obtained DNA concentration were found between the maceration and storage treatments. The TissueLyser® macerator produced higher DNA concentrations when compared to liquid nitrogen. For the storage treatments, five groups were formed based on DNA concentration when macerated with the TissueLyser® and two groups when macerated with liquid nitrogen. The DNA concentrations ranged from 285.00 ng/uL (7 days in transport buffer) to 702.00 ng/uL (30 days in silica gel) when the leaflets were macerated with liquid nitrogen, and from 572.73 ng/uL (30 days in silica gel) to 2,850.00 ng/uL (3 days in lyophiliser) using the TissueLyser® macerator. The DNA purity (A260/A280 nm) varied from 1.30 to 1.70 when the leaflets were macerated with liquid nitrogen and from 1.30 to 1.90 with the TissueLyser® macerator. Despite the variations in leaf tissue preservation and DNA concentration, all treatments were effective for DNA isolation and it was possible to amplify genomic regions of microsatellite markers by PCR. It was concluded that leaflets of E. precatoria stored in a lyophiliser and processed with an automatic macerator resulted in satisfactory DNA for molecular studies.  aEuterpe precatoria  aExtraction  aLeaves  aMaceration  aAçaí  aCampo Experimental  aDNA  aExtração  aFolha  aMaceração  aAçaí-solteiro  aAcre  aAmazonia Occidental  aAmazônia Ocidental  aCTAB method  aDNA isolation  aEmbrapa Acre  aExtracción  aHojas  aLeaflet  aMaceración  aRio Branco  aWestern Amazon1 aRUFINO, P. B.1 aAZEVEDO, J. M. A. de1 aSILVA, L. M. da1 aWADT, L. H. de O.1 aCAMPOS, T. de  tBioscience Journal, Uberlândiagv. 35, n. 4, p. 1188-1197, July/Aug. 2019.