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Genetic variants in microRNA biogenesis genes as novel indicators for secondary growth in Populus.

Identifieur interne : 000E77 ( Main/Exploration ); précédent : 000E76; suivant : 000E78

Genetic variants in microRNA biogenesis genes as novel indicators for secondary growth in Populus.

Auteurs : Beibei Chen [République populaire de Chine] ; Jinhui Chen [République populaire de Chine] ; Qingzhang Du [République populaire de Chine] ; Daling Zhou [République populaire de Chine] ; Longxin Wang [République populaire de Chine] ; Jianbo Xie [République populaire de Chine] ; Ying Li [République populaire de Chine] ; Deqiang Zhang [République populaire de Chine]

Source :

RBID : pubmed:29916214

Descripteurs français

English descriptors

Abstract

MicroRNAs (miRNAs) function as key regulators of complex traits, but how genetic alterations in miRNA biogenesis genes (miRBGs) affect quantitative variation has not been elucidated. We conducted transcript analyses and association genetics to investigate how miRBGs, miRNA genes (MIRNAs) and their respective targets contribute to secondary growth in a natural population of 435 Populus tomentosa individuals. This analysis identified 29 843 common single-nucleotide polymorphisms (SNPs; frequency > 0.10) within 682 genes (80 miRBGs, 152 MIRNAs, and 457 miRNA targets). Single-SNP association analysis found SNPs in 234 candidate genes exhibited significant additive/dominant effects on phenotypes. Among these, specific candidates that associated with the same traits produced 791 miRBG-MIRNA-target combinations, suggesting possible genetic miRBG-MIRNA and MIRNA-target interactions, providing an important clue for the regulatory mechanisms of miRBGs. Multi-SNP association found 4672 epistatic pairs involving 578 genes that showed significant associations with traits and identified 106 miRBG-MIRNA-target combinations. Two multi-hierarchical networks were constructed based on correlations of miRBG-miRNA and miRNA-target expression to further probe the mechanisms of trait diversity underlying changes in miRBGs. Our study opens avenues for the investigation of miRNA function in perennial plants and underscored miRBGs as potentially modulating quantitative variation in traits.

DOI: 10.1111/nph.15262
PubMed: 29916214


Affiliations:


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Le document en format XML

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<div type="abstract" xml:lang="en">MicroRNAs (miRNAs) function as key regulators of complex traits, but how genetic alterations in miRNA biogenesis genes (miRBGs) affect quantitative variation has not been elucidated. We conducted transcript analyses and association genetics to investigate how miRBGs, miRNA genes (MIRNAs) and their respective targets contribute to secondary growth in a natural population of 435 Populus tomentosa individuals. This analysis identified 29 843 common single-nucleotide polymorphisms (SNPs; frequency > 0.10) within 682 genes (80 miRBGs, 152 MIRNAs, and 457 miRNA targets). Single-SNP association analysis found SNPs in 234 candidate genes exhibited significant additive/dominant effects on phenotypes. Among these, specific candidates that associated with the same traits produced 791 miRBG-MIRNA-target combinations, suggesting possible genetic miRBG-MIRNA and MIRNA-target interactions, providing an important clue for the regulatory mechanisms of miRBGs. Multi-SNP association found 4672 epistatic pairs involving 578 genes that showed significant associations with traits and identified 106 miRBG-MIRNA-target combinations. Two multi-hierarchical networks were constructed based on correlations of miRBG-miRNA and miRNA-target expression to further probe the mechanisms of trait diversity underlying changes in miRBGs. Our study opens avenues for the investigation of miRNA function in perennial plants and underscored miRBGs as potentially modulating quantitative variation in traits.</div>
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<name sortKey="Chen, Beibei" sort="Chen, Beibei" uniqKey="Chen B" first="Beibei" last="Chen">Beibei Chen</name>
</noRegion>
<name sortKey="Chen, Beibei" sort="Chen, Beibei" uniqKey="Chen B" first="Beibei" last="Chen">Beibei Chen</name>
<name sortKey="Chen, Beibei" sort="Chen, Beibei" uniqKey="Chen B" first="Beibei" last="Chen">Beibei Chen</name>
<name sortKey="Chen, Jinhui" sort="Chen, Jinhui" uniqKey="Chen J" first="Jinhui" last="Chen">Jinhui Chen</name>
<name sortKey="Chen, Jinhui" sort="Chen, Jinhui" uniqKey="Chen J" first="Jinhui" last="Chen">Jinhui Chen</name>
<name sortKey="Chen, Jinhui" sort="Chen, Jinhui" uniqKey="Chen J" first="Jinhui" last="Chen">Jinhui Chen</name>
<name sortKey="Du, Qingzhang" sort="Du, Qingzhang" uniqKey="Du Q" first="Qingzhang" last="Du">Qingzhang Du</name>
<name sortKey="Du, Qingzhang" sort="Du, Qingzhang" uniqKey="Du Q" first="Qingzhang" last="Du">Qingzhang Du</name>
<name sortKey="Du, Qingzhang" sort="Du, Qingzhang" uniqKey="Du Q" first="Qingzhang" last="Du">Qingzhang Du</name>
<name sortKey="Li, Ying" sort="Li, Ying" uniqKey="Li Y" first="Ying" last="Li">Ying Li</name>
<name sortKey="Li, Ying" sort="Li, Ying" uniqKey="Li Y" first="Ying" last="Li">Ying Li</name>
<name sortKey="Li, Ying" sort="Li, Ying" uniqKey="Li Y" first="Ying" last="Li">Ying Li</name>
<name sortKey="Wang, Longxin" sort="Wang, Longxin" uniqKey="Wang L" first="Longxin" last="Wang">Longxin Wang</name>
<name sortKey="Wang, Longxin" sort="Wang, Longxin" uniqKey="Wang L" first="Longxin" last="Wang">Longxin Wang</name>
<name sortKey="Wang, Longxin" sort="Wang, Longxin" uniqKey="Wang L" first="Longxin" last="Wang">Longxin Wang</name>
<name sortKey="Xie, Jianbo" sort="Xie, Jianbo" uniqKey="Xie J" first="Jianbo" last="Xie">Jianbo Xie</name>
<name sortKey="Xie, Jianbo" sort="Xie, Jianbo" uniqKey="Xie J" first="Jianbo" last="Xie">Jianbo Xie</name>
<name sortKey="Xie, Jianbo" sort="Xie, Jianbo" uniqKey="Xie J" first="Jianbo" last="Xie">Jianbo Xie</name>
<name sortKey="Zhang, Deqiang" sort="Zhang, Deqiang" uniqKey="Zhang D" first="Deqiang" last="Zhang">Deqiang Zhang</name>
<name sortKey="Zhang, Deqiang" sort="Zhang, Deqiang" uniqKey="Zhang D" first="Deqiang" last="Zhang">Deqiang Zhang</name>
<name sortKey="Zhang, Deqiang" sort="Zhang, Deqiang" uniqKey="Zhang D" first="Deqiang" last="Zhang">Deqiang Zhang</name>
<name sortKey="Zhou, Daling" sort="Zhou, Daling" uniqKey="Zhou D" first="Daling" last="Zhou">Daling Zhou</name>
<name sortKey="Zhou, Daling" sort="Zhou, Daling" uniqKey="Zhou D" first="Daling" last="Zhou">Daling Zhou</name>
<name sortKey="Zhou, Daling" sort="Zhou, Daling" uniqKey="Zhou D" first="Daling" last="Zhou">Daling Zhou</name>
</country>
</tree>
</affiliations>
</record>

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