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Abstract
Cornegenapsylla sinica is an insect from the Psylloidea family that is capable for inducing the formation of galls on Dimocarpus longan plant leaves. The galls formed in the form of a protrusion on the adaxial side of the leaf, due to the depression on the abaxial side, the result of a puncture by the nymph of C. sinica. The formation of galls on the leaves of D. longan causes changes in the morphological, anatomical, and physiological structures of D. longan. Changes in the morphological structure, anatomy, and physiology of leaves which play an important role in photosynthesis and its distribution, will disrupt the process of photosynthesis and the distribution of assimilates. In addition, increased oxidative stress, decreased number of stomata, and decreased CO2 assimilation occurred in plant organs with galls.
Keywords: Cornegenapsylla sinica, Gall Formation, Photosynthesis.
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