So how did the misleading headlines come about? One aim of this research is to investigate the possibility of increasing the naturally occurring amount of an amino acid called citrullin in watermelon. Citrulline is of interest since in the body it can be converted to arginine, an amino acid that plays a role in immune system activity, as well as in the dilation of blood vessels. A press officer at the University, given the task of putting out a release about this rather mundane research, asked watermelon breeder Dr. Bhimu Patil to suggest some interesting items about watermelon that could be included in the press release. Patil then speculated about watermelon increasing levels of arginine in the blood, and mentioned that arginine is the source of nitric oxide, which in turn dilates blood vessels and can increase blood flow.
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Sex determination in plants leads to the development of unisexual flowers from an originally bisexual floral meristem. This mechanism results in the enhancement of outcrossing and promotes genetic variability, the consequences of which are advantageous to the evolution of a species. In melon, sexual forms are controlled by identity of the alleles at the andromonoecious a and gynoecious g loci. We previously showed that the a gene encodes an ethylene biosynthesis enzyme, CmACS-7, that represses stamen development in female flowers. Here we show that the transition from male to female flowers in gynoecious lines results from epigenetic changes in the promoter of a transcription factor, CmWIP1.
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The Asian house gecko, Hemidactylus frenatus , after being acclimatized to feeding on the melon fly, Bactrocera cucurbitae , consumed fewer numbers of day-old DO and older male melon flies compared to sexually immature flies 10 DO and younger. This confirmed that between 10 and 15 DAE most male melon flies are already sexually mature and producing sex pheromone. Synthetic 1,3-nonanediol, a component of male melon fly sex pheromone produced endogenously, when topically applied onto the thorax of housefly Musca domestica at ca. Raspberry ketone RK is consumed and sequestered into the pheromonal gland and later released as a pheromonal component of male melon fly. Houseflies topically treated with 2.