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The Plant Cell
A cDNA clone, BETl (for basal gndosperm jransfer layer), was isolated from a cDNA bank prepared from 10-days after pollination (DAP) maize endosperm mRNA. BE7Y mRNA was shown to encode a 7-kD cell wall polypeptlde. Both the mRNA and protein were restricted in their distrlbution to the basal endosperm transfer layer and were not expressed elsewhere in the plant. BE7Y expression commenced at 9 DAP, reached a maximum between 12 and 16 DAP, and declined after 16 DAP. The initial accumulation of thedoi:10.1105/tpc.7.6.747 pmid:7647565 fatcat:gx54bitfjbhkbotbp4fsdlulja