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An undergraduate laboratory exercise to study the effect of darkness on plant gene expression using DNA microarray
Author(s) -
Chang MingMei,
Briggs George M.
Publication year - 2007
Publication title -
biochemistry and molecular biology education
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 39
eISSN - 1539-3429
pISSN - 1470-8175
DOI - 10.1002/bmb.107
Subject(s) - dna microarray , gene expression , biology , microarray , oligonucleotide , dna , gene , microarray analysis techniques , microbiology and biotechnology , arabidopsis , chemistry , biochemistry , mutant
DNA microarrays are microscopic arrays on a solid surface, typically a glass slide, on which DNA oligonucleotides are deposited or synthesized in a high‐density matrix with a predetermined spatial order. Several types of DNA microarrays have been developed and used for various biological studies. Here, we developed an undergraduate laboratory exercise using an Arabidopsis DNA microarray to study the gene expression of Brassica rapa , Wisconsin Fast Plant. Genes involved in senescence, cell wall loosening/degradation, and sugar transport were the most upregulated, while those involved in photosynthesis, the elimination of reactive oxygen intermediates associated with photooxidative stress and auxin synthesis, were the most downregulated. Students were able to complete the experiment successfully. Throughout the exercise, they learned various important molecular techniques including RNA isolation, quantification, reverse transcription, cRNA synthesis, labeling and purification, and microarray hybridization, washing, scanning, and feature extraction. The exercise can be integrated into a college‐level molecular biology laboratory. The procedure used can be adapted to examine other effects on other organisms.