A two-step adaptive walk rewires nutrient transport in a challenging edaphic environment
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A two-step adaptive walk rewires nutrient transport in a challenging edaphic environment. / Tergemina, Emmanuel; Elfarargi, Ahmed F.; Flis, Paulina; Fulgione, Andrea; Göktay, Mehmet; Neto, Célia; Scholle, Marleen; Flood, Pádraic J.; Xerri, Sophie Asako; Zicola, Johan; Döring, Nina; Dinis, Herculano; Krämer, Ute; Salt, David E.; Hancock, Angela M.
In: Science Advances, Vol. 8, No. 20, eabm9385, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - A two-step adaptive walk rewires nutrient transport in a challenging edaphic environment
AU - Tergemina, Emmanuel
AU - Elfarargi, Ahmed F.
AU - Flis, Paulina
AU - Fulgione, Andrea
AU - Göktay, Mehmet
AU - Neto, Célia
AU - Scholle, Marleen
AU - Flood, Pádraic J.
AU - Xerri, Sophie Asako
AU - Zicola, Johan
AU - Döring, Nina
AU - Dinis, Herculano
AU - Krämer, Ute
AU - Salt, David E.
AU - Hancock, Angela M.
N1 - Publisher Copyright: Copyright © 2022 The Authors,
PY - 2022
Y1 - 2022
N2 - Most well-characterized cases of adaptation involve single genetic loci. Theory suggests that multilocus adaptive walks should be common, but these are challenging to identify in natural populations. Here, we combine trait mapping with population genetic modeling to show that a two-step process rewired nutrient homeostasis in a population of Arabidopsis as it colonized the base of an active stratovolcano characterized by extremely low soil manganese (Mn). First, a variant that disrupted the primary iron (Fe) uptake transporter gene (IRT1) swept quickly to fixation in a hard selective sweep, increasing Mn but limiting Fe in the leaves. Second, multiple independent tandem duplications occurred at NRAMP1 and together rose to near fixation in the island population, compensating the loss of IRT1 by improving Fe homeostasis. This study provides a clear case of a multilocus adaptive walk and reveals how genetic variants reshaped a phenotype and spread over space and time.
AB - Most well-characterized cases of adaptation involve single genetic loci. Theory suggests that multilocus adaptive walks should be common, but these are challenging to identify in natural populations. Here, we combine trait mapping with population genetic modeling to show that a two-step process rewired nutrient homeostasis in a population of Arabidopsis as it colonized the base of an active stratovolcano characterized by extremely low soil manganese (Mn). First, a variant that disrupted the primary iron (Fe) uptake transporter gene (IRT1) swept quickly to fixation in a hard selective sweep, increasing Mn but limiting Fe in the leaves. Second, multiple independent tandem duplications occurred at NRAMP1 and together rose to near fixation in the island population, compensating the loss of IRT1 by improving Fe homeostasis. This study provides a clear case of a multilocus adaptive walk and reveals how genetic variants reshaped a phenotype and spread over space and time.
U2 - 10.1126/sciadv.abm9385
DO - 10.1126/sciadv.abm9385
M3 - Journal article
C2 - 35584228
AN - SCOPUS:85130277509
VL - 8
JO - Science advances
JF - Science advances
SN - 2375-2548
IS - 20
M1 - eabm9385
ER -
ID: 310144837