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The Plant Cell
The above-ground portion of a plant develops from the shoot apical meristem. An abundant source of apical meristems was obtained from cauliflower heads. Meristematic cDNAs were identified by differential screening and used to isolate corresponding Arabidopsis thaliana genes. Transcriptional promoters from Arabidopsis clones were fused to the 8-glucuronidase (GUS) reporter gene and introduced into plants, and GUS expression was used to analyze temporal and spatial regulation of the promoters.doi:10.2307/3869211 pmid:1840916 fatcat:eqhekquvgjfm7b2jpweh4xuvpy