Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed Evolution
As an important driving force, introgression plays an essential role in shaping the evolution of plant species. However, knowledge concerning how introgression affects plant evolution in agroecosystems with strong human influences is still limited. To generate such knowledge, we used InDel (insertio...
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MDPI AG
2023-05-01
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| author | Xing-Xing Cai Zhi Wang Ye Yuan Li-Hao Pang Ying Wang Bao-Rong Lu |
| author_facet | Xing-Xing Cai Zhi Wang Ye Yuan Li-Hao Pang Ying Wang Bao-Rong Lu |
| author_sort | Xing-Xing Cai |
| collection | DOAJ |
| description | As an important driving force, introgression plays an essential role in shaping the evolution of plant species. However, knowledge concerning how introgression affects plant evolution in agroecosystems with strong human influences is still limited. To generate such knowledge, we used InDel (insertion/deletion) molecular fingerprints to determine the level of introgression from <i>japonica</i> rice cultivars into the <i>indica</i> type of weedy rice. We also analyzed the impact of crop-to-weed introgression on the genetic differentiation and diversity of weedy rice, using InDel (insertion/deletion) and SSR (simple sequence repeat) molecular fingerprints. Results based on the STRUCTURE analysis indicated an evident admixture of some weedy rice samples with <i>indica</i> and <i>japonica</i> components, suggesting different levels of introgression from <i>japonica</i> rice cultivars to the <i>indica</i> type of weedy rice. The principal coordinate analyses indicated <i>indica</i>–<i>japonica</i> genetic differentiation among weedy rice samples, which was positively correlated with the introgression of <i>japonica</i>-specific alleles from the rice cultivars. In addition, increased crop-to-weed introgression formed a parabola pattern of dynamic genetic diversity in weedy rice. Our findings based on this case study provide evidence that human activities, such as the frequent change in crop varieties, can strongly influence weed evolution by altering genetic differentiation and genetic diversity through crop–weed introgression in agroecosystems. |
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| spelling | doaj.art-b38dcce6ae8140b695e1f974c84eb2b62023-11-18T00:33:48ZengMDPI AGBiology2079-77372023-05-0112574410.3390/biology12050744Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed EvolutionXing-Xing Cai0Zhi Wang1Ye Yuan2Li-Hao Pang3Ying Wang4Bao-Rong Lu5Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200438, ChinaMinistry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200438, ChinaMinistry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200438, ChinaMinistry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200438, ChinaMinistry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200438, ChinaMinistry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai 200438, ChinaAs an important driving force, introgression plays an essential role in shaping the evolution of plant species. However, knowledge concerning how introgression affects plant evolution in agroecosystems with strong human influences is still limited. To generate such knowledge, we used InDel (insertion/deletion) molecular fingerprints to determine the level of introgression from <i>japonica</i> rice cultivars into the <i>indica</i> type of weedy rice. We also analyzed the impact of crop-to-weed introgression on the genetic differentiation and diversity of weedy rice, using InDel (insertion/deletion) and SSR (simple sequence repeat) molecular fingerprints. Results based on the STRUCTURE analysis indicated an evident admixture of some weedy rice samples with <i>indica</i> and <i>japonica</i> components, suggesting different levels of introgression from <i>japonica</i> rice cultivars to the <i>indica</i> type of weedy rice. The principal coordinate analyses indicated <i>indica</i>–<i>japonica</i> genetic differentiation among weedy rice samples, which was positively correlated with the introgression of <i>japonica</i>-specific alleles from the rice cultivars. In addition, increased crop-to-weed introgression formed a parabola pattern of dynamic genetic diversity in weedy rice. Our findings based on this case study provide evidence that human activities, such as the frequent change in crop varieties, can strongly influence weed evolution by altering genetic differentiation and genetic diversity through crop–weed introgression in agroecosystems.https://www.mdpi.com/2079-7737/12/5/744agroecosystemgenetic diversification<i>indica</i>–<i>japonica</i> ricemolecular fingerprintnatural hybridization<i>Oryza sativa</i> |
| spellingShingle | Xing-Xing Cai Zhi Wang Ye Yuan Li-Hao Pang Ying Wang Bao-Rong Lu Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed Evolution Biology agroecosystem genetic diversification <i>indica</i>–<i>japonica</i> rice molecular fingerprint natural hybridization <i>Oryza sativa</i> |
| title | Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed Evolution |
| title_full | Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed Evolution |
| title_fullStr | Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed Evolution |
| title_full_unstemmed | Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed Evolution |
| title_short | Crop–Weed Introgression Plays Critical Roles in Genetic Differentiation and Diversity of Weedy Rice: A Case Study of Human-Influenced Weed Evolution |
| title_sort | crop weed introgression plays critical roles in genetic differentiation and diversity of weedy rice a case study of human influenced weed evolution |
| topic | agroecosystem genetic diversification <i>indica</i>–<i>japonica</i> rice molecular fingerprint natural hybridization <i>Oryza sativa</i> |
| url | https://www.mdpi.com/2079-7737/12/5/744 |
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