22Development of Plants

After divergence between the animal and plant lineages, plants began their own path to become multicellular organisms, developing unique mechanisms of regeneration and growth regulation in accordance with their photoautotrophic and rooted lifestyle. These mechanisms which create the appearance and features (that we perceive as) characteristic to plants are efficiently and rationally integrated in the plant organism to realize various activities. The mechanisms that regulate plant development and growth have long been studied, and recent analyses using model plants such as Arabidopsis and rice have helped to accumulate information at the molecular level. This chapter will discuss these recent discoveries, describe the morphogenetic development of plants, and delineate a multicellular system that is significantly different from that of animals. 

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