Chromosomal-level genome assembly ofPopulus lasiocarpa DOI Creative Commons
Zhiqin Long, Yupeng Sang, Jiajun Feng

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Июль 13, 2023

ABSTRACT Despite widespread biodiversity loss, our understanding of how species and populations will respond to accelerated climate change remains limited. In this study, we predict the evolutionary responses Populus lasiocarpa , a key alpine forest tree primarily found in mountainous regions global hotspot, change. We accomplish by generating integrating new reference genome for P. re-sequencing data 200 samples, gene expression profiles leaf root tissue following exposure heat waterlogging. Analyses indicate that demographic dynamics, divergent selection, long-term balancing selection have shaped maintained genetic variation within between over historical timescales. examining genomic signatures contemporary adaptation, haplotype blocks, characterized inversion polymorphisms suppress recombination, play crucial role clustering environmentally adaptive variations. Comparison evolved plastic show genes with plasticity generally align responses, highlighting plasticity. Lastly, incorporated local migration, load, into predictions population-level risks. Our findings reveal western populations, distributed Hengduan Mountains—a region known its environmental heterogeneity significant biodiversity—are most vulnerable should be prioritized conservation management. Overall, study advances relative roles natural immediate driving adaptation keystone species.

Язык: Английский

Exploring the connection between climatic conditions and genetic properties of Abies alba Mill., including warm and summer-dry Mediterranean environments DOI Creative Commons

Sevil Coşgun,

Jérémy Gauthier, Giorgia Beffa

и другие.

The Science of The Total Environment, Год журнала: 2025, Номер 964, С. 178559 - 178559

Опубликована: Янв. 23, 2025

Abies alba Mill. is a prominent European tree species predominantly inhabiting cool and humid montane environments. However, paleoecological evidence reveals that during the Eemian mid-Holocene, A. thrived in much warmer drier climates. This capacity nowadays reflected cryptic meso- sub-Mediterranean lowland populations. To link populations across diverse climates spanning from Mediterranean lowlands to Alpine timberline, we genotyped 421 specimens Italy Switzerland at 190 single-nucleotide polymorphisms (SNPs). Population genetic structure analyses indicate isolated Tuscany Ticino align genetically with higher elevation each region, suggesting their thrive warmer, conditions cannot be attributed plantations planting stock originating different or occurrence of single warm-adapted lineage showing disjunct distribution, unless migration between stands occurred. Genotype-environment associations reveal temperature seasonality, precipitation critical seasons, relative humidity are important for explaining species' variation. With genotype-environment genotype-phenotype associations, identified candidate adaptive genes potentially linked climatic drought response. While certain alleles may have spread Southern could explained by shared ancestry Tuscan populations, local adaptation occurred specific loci. These findings underscore importance considering hitherto overlooked better understand niche its potential forest conservation management under global warming.

Язык: Английский

Процитировано

1
Forest Tree Breeding Under the Global Environmental Change: Challenges and Opportunities DOI Creative Commons
Chenglin Li,

B.B. Li,

Wenxuan Zhao

и другие.

Trees Forests and People, Год журнала: 2025, Номер 20, С. 100867 - 100867

Опубликована: Апрель 23, 2025

Язык: Английский

Процитировано

0
Chromosomal-level genome assembly ofPopulus lasiocarpa DOI Creative Commons
Zhiqin Long, Yupeng Sang, Jiajun Feng

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Июль 13, 2023

ABSTRACT Despite widespread biodiversity loss, our understanding of how species and populations will respond to accelerated climate change remains limited. In this study, we predict the evolutionary responses Populus lasiocarpa , a key alpine forest tree primarily found in mountainous regions global hotspot, change. We accomplish by generating integrating new reference genome for P. re-sequencing data 200 samples, gene expression profiles leaf root tissue following exposure heat waterlogging. Analyses indicate that demographic dynamics, divergent selection, long-term balancing selection have shaped maintained genetic variation within between over historical timescales. examining genomic signatures contemporary adaptation, haplotype blocks, characterized inversion polymorphisms suppress recombination, play crucial role clustering environmentally adaptive variations. Comparison evolved plastic show genes with plasticity generally align responses, highlighting plasticity. Lastly, incorporated local migration, load, into predictions population-level risks. Our findings reveal western populations, distributed Hengduan Mountains—a region known its environmental heterogeneity significant biodiversity—are most vulnerable should be prioritized conservation management. Overall, study advances relative roles natural immediate driving adaptation keystone species.

Язык: Английский

Процитировано

2