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玉米（Zea mays）Pho1基因家族的特征分析与转座子诱变

Characterization and Transposon Mutagenesis of the Maize (Zea mays) Pho1 Gene Family.

作者信息

Salazar-Vidal M Nancy, Acosta-Segovia Edith, Sánchez-León Nidia, Ahern Kevin R, Brutnell Thomas P, Sawers Ruairidh J H

机构信息

Laboratorio Nacional de Genómica para la Biodiversidad (LANGEBIO), Unidad de Genómica Avanzada, Centro de Investigaciones y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Irapuato C.P. 36821, Guanajuato, México.

Boyce Thompson Institute for Plant Research, Ithaca, New York 14853-1801, United States of America.

出版信息

PLoS One. 2016 Sep 20;11(9):e0161882. doi: 10.1371/journal.pone.0161882. eCollection 2016.

DOI:10.1371/journal.pone.0161882
PMID:27648940
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5029887/
Abstract

Phosphorus is an essential nutrient for all plants, but also one of the least mobile, and consequently least available, in the soil. Plants have evolved a series of molecular, metabolic and developmental adaptations to increase the acquisition of phosphorus and to maximize the efficiency of use within the plant. In Arabidopsis (Arabidopsis thaliana), the AtPHO1 protein regulates and facilitates the distribution of phosphorus. To investigate the role of PHO1 proteins in maize (Zea mays), the B73 reference genome was searched for homologous sequences, and four genes identified that were designated ZmPho1;1, ZmPho1;2a, ZmPho1;2b and ZmPho1;3. ZmPho1;2a and ZmPho1;2b are the most similar to AtPHO1, and represent candidate co-orthologs that we hypothesize to have been retained following whole genome duplication. Evidence was obtained for the production of natural anti-sense transcripts associated with both ZmPho1;2a and ZmPho1;2b, suggesting the possibility of regulatory crosstalk between paralogs. To characterize functional divergence between ZmPho1;2a and ZmPho1;2b, a program of transposon mutagenesis was initiated using the Ac/Ds system, and, here, we report the generation of novel alleles of ZmPho1;2a and ZmPho1;2b.

摘要

磷是所有植物必需的营养元素，但也是土壤中移动性最差、因而有效性最低的元素之一。植物已经进化出一系列分子、代谢和发育适应性机制，以增加对磷的获取，并使植物体内的利用效率最大化。在拟南芥中，AtPHO1蛋白调节并促进磷的分配。为了研究PHO1蛋白在玉米中的作用，在B73参考基因组中搜索同源序列，鉴定出四个基因，分别命名为ZmPho1;1、ZmPho1;2a、ZmPho1;2b和ZmPho1;3。ZmPho1;2a和ZmPho1;2b与AtPHO1最为相似，代表了我们假设在全基因组复制后保留下来的候选共直系同源基因。获得了与ZmPho1;2a和ZmPho1;2b相关的天然反义转录本产生的证据，这表明旁系同源基因之间可能存在调控串扰。为了表征ZmPho1;2a和ZmPho1;2b之间的功能差异，启动了一个使用Ac/Ds系统的转座子诱变计划，在此，我们报告了ZmPho1;2a和ZmPho1;2b新等位基因的产生。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/f56964fc7bd5/pone.0161882.g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/533b89b27e09/pone.0161882.g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/71c71be7ac6f/pone.0161882.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/9ca562f36475/pone.0161882.g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/e78d7d441768/pone.0161882.g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/e9aa431916f0/pone.0161882.g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/f56964fc7bd5/pone.0161882.g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/533b89b27e09/pone.0161882.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/ac0821234a83/pone.0161882.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/71c71be7ac6f/pone.0161882.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/9ca562f36475/pone.0161882.g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b919/5029887/f56964fc7bd5/pone.0161882.g008.jpg

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