The laccase gene CcLac2 is essential for the summer-form to winter-form transition in the Chinese pear psyllid.
BACKGROUND The Chinese pear psyllid (Cacopsylla chinensis), a vector of the bacterial pathogen Erwinia amylovora, displays seasonal polyohenism, transitioning from a summer-form to a winter-form in response to temperature fluctuations. Although the winter-form phenotypes, characterized by enhanced cuticular melanizatio...