植物ホルモンを利用した作物の分子育種

抄録

The goal of crop breeding is to develop crop varieties that stably provide as much agricultural products as possible with qualities meeting consumer needs. In practice, genetic modifications (crossing, mutational and transgenic breeding) and selections have been intensively performed to enhance tolerance or resistance for abiotic or biotic stresses that impair stable production of crops in addition to improvement of yields and qualities. Physiological effects of phytohormones on crops have been studied for a long time. Chemicals showing hormonal activity or affecting hormone metabolism or signaling are widely used as plant growth regulators in agriculture. Recent advances in plant molecular genetics and genomics have revealed that a number of agriculturally important traits are closely related to phytohormones. This review introduces several hormone-related traits and corresponding molecular mechanisms. We summarize recent and future possible contributions of hormone research to crop breeding.