Evolutionary impact of whole genome duplication in Poaceae family
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REVIEW ARTICLE
Evolutionary impact of whole genome duplication in Poaceae family Solji Lee1 · Sehyun Choi1 · Donghyun Jeon1 · Yuna Kang1 · Changsoo Kim1,2 Accepted: 11 May 2020 © Korean Society of Crop Science (KSCS) 2020
Abstract Whole genome duplication (WGD) is a common phenomenon in plants, inducing species diversity, promoting speciation, and playing an important role in providing new genetic material in plant evolution. So far, numerous new gene functions such as pseudogenization, neofunctionalization, and subfunctionalization have evolved through WGD. WGD has occurred several times during the evolution of angiosperms over the past 200 million years. Poaceae, one of the largest plant families in the angiosperms, is considered one of the most economically important and ecologically successful plants, with approximately 600 genera and 10,000 species. Many genetic studies have been conducted on these plants. However, study of the most active phylogeny in the Poaceae family study has not yet been completed. Through comparative studies of major Poaceae groups, this review focuses on the effects of genome duplication in the Poaceae family on its evolutionary history and the changes in chromosome numbers. Keywords Polyplodizatio · Whole genome duplication · Grass family · Domestication · Evolution
Introduction Poaceae (= Grass family, Gramineae) is one of the largest plant families in the angiosperms, making up about 20% of the Earth’s surface, and is the most evolutionary and ecologically superior (Shantz 1954). The family is also one of the most economically successful plants, with 600 genera and around 10,000 species, including bamboo, pasture, and cereal grasses. It is not only used as a source of energy for humans, but also provides feed for animals It diverged from dicots about 140–150 million years ago (mya) (Chaw et al. 2004), and since then, it has independently evolved from other plant species, providing some useful clues for evolutionary study. In particular, the family is largely divided into two large clades, BOP, and PACMAD, which represent C3 and C4 photosynthetic systems, respectively, offering a
Solji Lee, Sehyun Choi, and Donghyun Jeon have equally contributed to this work. * Changsoo Kim [email protected] 1
Department of Crop Science, Chungnam National University, Daejeon 34134, Korea
Department of Smart Agriculture Systems, Chungnam National University, Daejeon 34134, Korea
2
unique opportunity to do research on photosynthetic systems related to climate change during their evolutionary history. During the past few decades, gene or genome evolution has been accepted as one of the major driving forces of evolution in many eukaryotic organisms (Ohno 1970), although some have studied whether or not the idea of polyploidization is an evolutionary dead end (Mayrose et al. 2011). In terms of evolution, however, the most meaningful aspect of genome duplication is to generate redundant genetic materials. Those redundant pieces of information evolved separately over the time by a variet
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