| Autor: |
Jin-Peng Wang, Ji-Gao Yu, Jing Li, Peng-Chuan Sun, Li Wang, Jia-Qing Yuan, Fan-Bo Meng, Sang-Rong Sun, Yu-Xian Li, Tian-Yu Lei, Yu-Xin Pan, Wei-Na Ge, Zhen-Yi Wang, Lan Zhang, Xiao-Ming Song, Chao Liu, Xue-Qian Duan, Shao-Qi Shen, Yang-qin Xie, Yue Hou, Jin Zhang, Jian-Yu Wang, Xiyin Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
iScience, Vol 7, Iss , Pp 230-240 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2589-0042 |
| DOI: |
10.1016/j.isci.2018.08.003 |
| Popis: |
Summary: The genome of kiwifruit (Actinidia chinensis) was sequenced previously, the first in the Actinidiaceae family. It was shown to have been affected by polyploidization events, the nature of which has been elusive. Here, we performed a reanalysis of the genome and found clear evidence of 2 tetraploidization events, with one occurring ∼50–57 million years ago (Mya) and the other ∼18–20 Mya. Two subgenomes produced by each event have been under balanced fractionation. Moreover, genes were revealed to express in a balanced way between duplicated copies of chromosomes. Besides, lowered evolutionary rates of kiwifruit genes were observed. These findings could be explained by the likely auto-tetraploidization nature of the polyploidization events. Besides, we found that polyploidy contributed to the expansion of key functional genes, e.g., vitamin C biosynthesis genes. The present work also provided an important comparative genomics resource in the Actinidiaceae and related families. : Genetics; Evolutionary Biology; Plant Biology; Omics Subject Areas: Genetics, Evolutionary Biology, Plant Biology, Omics |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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