Transcription Factor CmWRKY13 Regulates Cucurbitacin B Biosynthesis Leading to Bitterness in Oriental Melon Fruit (Cucumis melo var. Makuwa Makino)

Bitterness, caused by cucurbitacin B (CuB), is one of the important traits that affects melon fruit quality and consumer acceptance. Therefore, the detailed mechanism behind the regulation of CuB biosynthesis on melon fruit needs to be further explored. This study investigated CuB content and transcriptomes of "YMR" melon fruit treated by 5 and 20 mg L