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| Content Provider | frontiers |
|---|---|
| Author | Zhu, Xuli Sun, Fengshuo Sang, Mengmeng Ye, Meixia Bo, Wenhao Dong, Ang Wu, Rongling |
| Abstract | Heterophylly is an adaptive strategy used by some plants in response to environmental changes. Due to the lack of representative plants with typical heteromorphic leaves, little is known about the genetic architecture of heterophylly in plants and the genes underlying its control. Here, we investigated the genetic characteristics underlying changes in leaf shape based on the model species, Populus euphratica, which exhibits typical heterophylly. A set of 401,571 single-nucleotide polymorphisms (SNPs) derived from whole-genome sequencing of 860 genotypes were associated with nine leaf traits, which were related to descriptive and shape data using single- and multi-leaf genome-wide association studies (GWAS). Multi-leaf GWAS allows for a more comprehensive understanding of the genetic architecture of heterophylly by considering multiple leaves simultaneously.. The single-leaf GWAS detected 140 significant SNPs, whereas the multi-leaf GWAS detected 200 SNP-trait associations. Markers were found across 19 chromosomes, and 21 unique genes were implicated in traits and serve as potential targets for selection. Our results provide novel insights into the genomic architecture of heterophylly, and provide candidate genes for breeding or engineering P. euphratica. Our observations also improve understanding of the intrinsic mechanisms of plant growth, evolution, and adaptation in response to climate change. |
| ISSN | 1664462X |
| DOI | 10.3389/fpls.2022.870876 |
| Volume Number | 13 |
| Journal | Frontiers in Plant Science |
| Language | English |
| Publisher Date | 2022-06-15 |
| Access Restriction | Open |
| Subject Keyword | Geometric morphometrics Genome-wide association study (GWAS) Heterophylly Leaf shape Populus euphratica |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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