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Range-wide differential adaptation and genomic vulnerability in critically endangered Asian rosewoods

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Title Range-wide differential adaptation and genomic vulnerability in critically endangered Asian rosewoods
 
Creator Hung, Tin Hang
So, Thea
Thammavong, Bansa
Chamchumroon, Voradol
Theilade, Ida
Phourin, Chhang
Bouamanivong, Somsanith
Hartvig, Ida
Gaisberger, Hannes
Jalonen, Riina
Boshier, David H.
MacKay, John J.
 
Subject genomics
climate change adaptation
tropical wood
endangered species
dalbergia cochinchinensis
dalbergia oliveri
drought tolerance
 
Description In the billion-dollar global illegal wildlife trade, rosewoods have been the world’s most trafficked wild product since 2005. Dalbergia cochinchinensis and D. oliveri are the most sought-after rosewoods in the Greater Mekong Subregion. They are exposed to significant genetic risks and the lack of knowledge on their adaptability limits the effectiveness of conservation efforts. Here we present genome assemblies and range-wide genomic scans of adaptive variation, together with predictions of genomic vulnerability to climate change. Adaptive genomic variation was differentially associated with temperature and precipitation-related variables between the species, although their natural ranges overlap. The findings are consistent with differences in pioneering ability and in drought tolerance. We predict their genomic offsets will increase over time and with increasing carbon emission pathway but at a faster pace in D. cochinchinensis than in D. oliveri. These results and the distinct gene-environment association in the eastern coastal edge suggest species-specific conservation actions: germplasm representation across the range in D. cochinchinensis and focused on vulnerability hotspots in D. oliveri. We translated our genomic models into a seed source matching application, seedeR, to rapidly inform restoration efforts. Our ecological genomic research uncovering contrasting selection forces acting in sympatric rosewoods is of relevance to conserving tropical trees globally and combating risks from climate change.
of knowledge on their adaptability limits the effectiveness of conservation efforts. Here, we present genome assemblies and range-wide genomic scans of adaptive variation, together with predictions of genomic offset to climate change. Adaptive genomic variation was differentially associated with temperature and precipitation-related variables between the species, although their natural ranges overlap. The findings are consistent with differences in pioneering ability and in drought tolerance. We predict their genomic offsets will increase over time and with increasing carbon emission pathway but at a faster pace in D. cochinchinensis than in D. oliveri. These results and the distinct gene-environment association in the eastern coastal edge of Vietnam suggest species-specific conservation actions: germplasm representation across the range in D. cochinchinensis and focused on hotspots of genomic offset in D. oliveri. We translated our genomic models into a seed source matching application, seedeR, to rapidly inform restoration efforts. Our ecological genomic research uncovering contrasting selection forces acting in sympatric rosewoods is of relevance to conserving tropical trees globally and combating risks from climate change.
 
Date 2023-01-31
2023-06-06T10:13:05Z
2023-06-06T10:13:05Z
 
Type Journal Article
 
Identifier Hung, T.H.; So, T.; Thammavong, B.; Chamchumroon, V.; Theilade, I.; Phourin, C.; Bouamanivong, S.; Hartvig, I.; Gaisberger, H.; Jalonen, R.; Boshier, D.H.; MacKay, J.J. (2023) Range-wide differential adaptation and genomic vulnerability in 4 critically endangered Asian rosewoods. Proceedings of the National Academy of Sciences (USA) 120(33):e2301603120. ISSN: 1091-6490
https://hdl.handle.net/10568/130659
https://doi.org/10.1073/pnas.2301603120
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format application/pdf
 
Source Proceedings of the National Academy of Sciences (USA)