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Phenolic Compounds Accumulate Specifically in Maternally-Derived Tissues of Developing Maize Kernels
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ABSTRACT
Phenolic compounds function in natural resistance of plants to insects, pathogens, and abiotic stresses. We investigated the flavonoid and phenolic acid content in developing maize kernels from 8 to 28 days after pollination and found a complex and developmentally dynamic mixture of compounds. LC-MS analysis showed no detectable levels of the flavonoid maysin in any of the kernel tissue tested. Accumulation of the three most abundant analytes was developmentally and spatially regulated and independent of the regulatory transcription factor pericarp color 1 (P1). Major analytes have ...
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