The increased intron number in ancient EpPAL genes may be significant, as intron-gain events can enhance mRNA stability or harbor regulatory elements without disrupting the coding frame of genes [ 25 , 26 – 28 ].
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Genome-wide identification of the phenylalanine ammonia-lyase gene from Epimedium Pubescens Maxim. (Berberidaceae): novel insight into the evolution of the PAL gene family.
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