The genome evolution and low-phosphorus adaptation in white lupin
The genome evolution and low-phosphorus adaptation in white lupin
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DOI：
10.1038/s41467-020-14891-z
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发表时间：
2020-02
影响因子：
16.6
通讯作者：
Weifeng Xu;Qian Zhang;Wei Yuan;Feiyun Xu;Mehtab Muhammad Aslam;Rui Miao;Ying Li;Qianwen Wang-Qianwen
中科院分区：
文献类型：
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作者：
Weifeng Xu;Qian Zhang;Wei Yuan;Feiyun Xu;Mehtab Muhammad Aslam;Rui Miao;Ying Li;Qianwen Wang-Qianwen
White lupin (Lupinus albus) is a legume crop that develops cluster roots and has high phosphorus (P)-use efficiency (PUE) in low-P soils. Here, we assemble the genome of white lupin and find that it has evolved from a whole-genome triplication (WGT) event. We then decipher its diploid ancestral genome and reconstruct the three sub-genomes. Based on the results, we further reveal the sub-genome dominance and the genic expression of the different sub-genomes varying in relation to their transposable element (TE) density. The PUE genes in white lupin have been expanded through WGT as well as tandem and dispersed duplications. Furthermore, we characterize four main pathways for high PUE, which include carbon fixation, cluster root formation, soil-P remobilization, and cellular-P reuse. Among these, auxin modulation may be important for cluster root formation through involvement of potential genesLaABCG36s andLaABCG37s. These findings provide insights into the genome evolution and low-P adaptation of white lupin.
