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一组锚蛋白和锚蛋白重复序列基因与水稻穗分枝多样性有关。

A cluster of Ankyrin and Ankyrin-TPR repeat genes is associated with panicle branching diversity in rice.

机构信息

LMI RICE, National Key Laboratory for Plant Cell Biotechnology, Agronomical Genetics Institute, Hanoi, Vietnam.

UMR DIADE, University of Montpellier, IRD, Montpellier, France.

出版信息

PLoS Genet. 2021 Jun 7;17(6):e1009594. doi: 10.1371/journal.pgen.1009594. eCollection 2021 Jun.

DOI:10.1371/journal.pgen.1009594
PMID:34097698
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8211194/
Abstract

The number of grains per panicle is an important yield-related trait in cereals which depends in part on panicle branching complexity. One component of this complexity is the number of secondary branches per panicle. Previously, a GWAS site associated with secondary branch and spikelet numbers per panicle in rice was identified. Here we combined gene capture, bi-parental genetic population analysis, expression profiling and transgenic approaches in order to investigate the functional significance of a cluster of 6 ANK and ANK-TPR genes within the QTL. Four of the ANK and ANK-TPR genes present a differential expression associated with panicle secondary branch number in contrasted accessions. These differential expression patterns correlate in the different alleles of these genes with specific deletions of potential cis-regulatory sequences in their promoters. Two of these genes were confirmed through functional analysis as playing a role in the control of panicle architecture. Our findings indicate that secondary branching diversity in the rice panicle is governed in part by differentially expressed genes within this cluster encoding ANK and ANK-TPR domain proteins that may act as positive or negative regulators of panicle meristem's identity transition from indeterminate to determinate state.

摘要

每穗粒数是谷类作物的一个重要产量相关性状，部分取决于穗分枝的复杂性。这种复杂性的一个组成部分是每穗的二次枝数。先前，在水稻中鉴定到一个与二次枝和小穗数相关的 GWAS 位点。在这里，我们结合基因捕获、双亲遗传群体分析、表达谱和转基因方法，以研究 QTL 内 6 个 ANK 和 ANK-TPR 基因簇的功能意义。ANK 和 ANK-TPR 基因中的 4 个基因与不同品种的穗二次枝数呈差异表达相关。这些差异表达模式与这些基因的不同等位基因相关联，其启动子中存在潜在顺式调控序列的特异性缺失。通过功能分析证实了其中两个基因在控制穗结构方面发挥了作用。我们的研究结果表明，水稻穗的二次分枝多样性部分受该簇中差异表达基因的控制，这些基因编码 ANK 和 ANK-TPR 结构域蛋白，它们可能作为不定向分生组织向确定性状态转变的正或负调节剂。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/b6444aaaa912/pgen.1009594.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/d6c38dac64a1/pgen.1009594.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/403a03eef938/pgen.1009594.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/678ebe009132/pgen.1009594.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/f3f189859d4d/pgen.1009594.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/da06606d6665/pgen.1009594.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/b6444aaaa912/pgen.1009594.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/d6c38dac64a1/pgen.1009594.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/403a03eef938/pgen.1009594.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/678ebe009132/pgen.1009594.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/f3f189859d4d/pgen.1009594.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/da06606d6665/pgen.1009594.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/476d/8211194/b6444aaaa912/pgen.1009594.g006.jpg

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