In flowering plants, double fertilization is normally accomplished by the first pollen tube, with the fertilized ovule subsequently inhibiting the attraction of a second pollen tube. However, the mechanism of second-pollen-tube avoidance remains unknown. We discovered that second-pollen-tube avoidance is dual controlled by the two female gametes independently and synergistically. In addition, we also demonstrated the first examples of artificial hetero-fertilization in Arabidopsis. The current findings can apply for breeding program.
JST ERATO (Exploratory Research for Advanced Technology)
Higashiyama Live-Holonics Project
Maruyama D., Hamamura Y., Takeuchi H., Susaki D., Nishimaki M., Kurihara D., Kasahara R.D., Higashiyama T., Independent control by each female gamete prevents the attraction of multiple pollen tubes, Developmental Cell, 2013, 25, 317-323.
Tetsuya Higashiyama Ph.D.
ERATO Higashiyama Live-Holonics Project
Life Innovation Group
Department of Research Project
Japan Science and Technology Agency (JST)