Chromosome-level baobab genome illuminates its evolutionary trajectory and environmental adaptation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10494781" target="_blank" >RIV/00216208:11310/24:10494781 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1UH_~ZZu1r" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1UH_~ZZu1r</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41467-024-53157-w" target="_blank" >10.1038/s41467-024-53157-w</a>

Result language

angličtina

Original language name

Chromosome-level baobab genome illuminates its evolutionary trajectory and environmental adaptation

Original language description

Baobab (Adansonia digitata) is a long-lived tree endemic to Africa with economic, ecological, and cultural importance, yet its genomic features are underexplored. Here, we report a chromosome-level reference genome anchored to 42 chromosomes for A. digitata, alongside draft assemblies for a sibling tree, two trees from distinct locations in Africa, and A. za from Madagascar. The baobab genome is uniquely rich in DNA transposons, which make up 33%, while LTR retrotransposons account for 10%. A. digitata experienced whole genome multiplication (WGM) around 30 million years ago (MYA), followed by a second WGM event 3-11 MYA, likely linked to autotetraploidy. Resequencing of 25 trees identify three subpopulations, with gene flow across West Africa distinct from East Africa. Gene enrichment and fixation index (Fst) analyses show baobab retained multiple circadian, flowering, and light-responsive genes, which likely support longevity through the UV RESISTANCE LOCUS 8 (UVR8) pathway. In sum, we provide genomic resources and insights for baobab breeding and conservation. Baobab is a long-lived tree that holds great economic, ecological, and cultural value. Here, the authors report haploid chromosome-level reference genome of Adansonia digitata and draft assemblies for a sibling tree, two trees from distinct locations in Africa, and a related species from Madagascar.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nature Communications

ISSN

2041-1723

e-ISSN

2041-1723

Volume of the periodical

15

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

8833

UT code for WoS article

001336422500006

EID of the result in the Scopus database

2-s2.0-85206123589