| RRC ID |
69102
|
| 著者 |
Shen Y, Xia H, Tu Z, Zong Y, Yang L, Li H.
|
| タイトル |
Genetic divergence and local adaptation of Liriodendron driven by heterogeneous environments.
|
| ジャーナル |
Mol Ecol
|
| Abstract |
Ecological adaptive differentiation alters both the species diversity and intraspecific genetic diversity in forests, thus affecting the stability of forest ecosystems. Therefore, knowledge of the genetic underpinnings of the ecological adaptive differentiation of forest species is critical for effective species conservation. In this study, single-nucleotide polymorphisms (SNPs) from population transcriptomes were used to investigate the spatial distribution of genetic variation in Liriodendron to assess whether environmental variables can explain genetic divergence. We examined the contributions of environmental variables to population divergence and explored the genetic underpinnings of local adaptation using a landscape genomic approach. Niche models and statistical analyses showed significant niche divergence between L. chinense and L. tulipifera, suggesting that ecological adaptation may play a crucial role in driving interspecific divergence. We detected a new fine-scale genetic structure in L. chinense, and divergence of the six groups occurred during the late Pliocene to early Pleistocene. Redundancy analysis (RDA) revealed significant associations between genetic variation and multiple environmental variables. Environmental association analyses identified 67 environmental association loci (EALs; nonsynonymous SNPs) that underwent interspecific or intraspecific differentiation, 28 of which were associated with adaptive genes. These 28 candidate adaptive loci provide substantial evidence for local adaptation in Liriodendron. Our findings reveal ecological adaptive divergence pattern between Liriodendron species and provide novel insight into the role of heterogeneous environments in shaping genetic structure and driving local adaptation among populations, informing future L. chinense conservation efforts.
|
| 巻・号 |
31(3)
|
| ページ |
916-933
|
| 公開日 |
2022-2-1
|
| DOI |
10.1111/mec.16271
|
| PMID |
34773328
|
| MeSH |
Adaptation, Physiological / genetics
Ecosystem
Genetic Drift
Genetics, Population
Liriodendron*
Polymorphism, Single Nucleotide
|
| IF |
5.163
|
| リソース情報 |
| GBIF |
Spermatophyte collection of Himeji City Science Museum
Plant Specimen Database of Tama Forest Science Garden, Forestry and Forest Products Research Institute, Japan
Plant specimens of Komatsu City Museum
Plant specimens of Horaiji-san Museum of Natural History Toji K. collection
Vascular Plant Specimens of Yamagata Prefectural Museum
Vascular plant specimens of Akita Prefectural Museum
Vascular plants database of Atsugi City Museum
Herbarium, University Archives and Collections, Fukushima University, Japan (FKSE)
Vascular Plant Collection of Natural History Museum and Institute, Chiba
Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Pref., Japan
Ibaraki Nature Museum, Vascular Plants collection
Plant Specimens of Kurashiki Museum of Natural History
Herbarium Specimens of Tokushima Prefectural Museum, Japan
Spermatophyta specimens of Iwate Prefectural Museum
Vascular Plants Collection of Sagamihara City Museum
Plant specimens deposited in Osaka Museum of Natural History, Japan
Vascular Plant Specimens of Kochi Prefectural Makino Botanical Garden
Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History
Vascular plants collection of Hiratsuka City Museum
Plant specimens of Parthenon Tama Museum (PTHM)
Vascular plant specimens of Nagano Environmental Conservation Research Institute, Nagano Prefecture
Plant specimens of Toyota City Nature Sanctuary (from non-museum circle) |
