Eighty-nine miRNAs were differentially
expressed in tomato after being infected by cucumber mosaic virus; a
negative relationship between the expression activities between seven
miRNAs and
fi
ve target mRNAs was determined, suggesting that the
virus regulated the gene expression in the host plant and produced cor-
responding symptoms via miRNA in the virus
–
host interaction process
(
Feng et al., 2013
).