A primary purpose of our research is to identify markers genetically linked to loci conditioning variation in phytoestrogen production by different soybean varieties. Chemical analysis studies and further genetic studies are underway in our laboratories. This genetic and chemical information could then be used in plant breeding to control the levels of phytoestrogens produced by soybeans. Phytoestrogens and Reproduction Estrogens have been shown to affect ovarian function and early embryonic development. A decrease in apoptosis could increase ovulation rate.
Estrogens also play an important role in early embryonic development in swine.
We hypothesize that phytoestrogens in soybean meal can positively affect ovulation rate and embryonic survival in swine, thus increasing average litter size. The positive influence of phytoestrogens on these events would increase embryonic survival and thus litter size. In addition, a positive influence of soy phytoestrogens on reproduction will increase demand to isolate these compounds. These defects suggest that tissues derived from the reproductive system progenitors were affected. It is possible that phytoestrogens may have the same effect in fetal sexual differentiation, protecting the developing reproductive system from strong estrogens that may have deleterious effects on proper differentiation.