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鞑靼荞麦 NAC 转录因子家族的全基因组分析。

Genome-wide analysis of the NAC transcription factor family in Tartary buckwheat (Fagopyrum tataricum).

机构信息

College of Life Science, Sichuan Agricultural University, Ya'an, China.

出版信息

BMC Genomics. 2019 Feb 6;20(1):113. doi: 10.1186/s12864-019-5500-0.

DOI:10.1186/s12864-019-5500-0
PMID:30727951
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6366116/
Abstract

BACKGROUND

The NAC (NAM, ATAF1/2, and CUC2) transcription factor family represents a group of large plant-specific transcriptional regulators, participating in plant development and response to external stress. However, there is no comprehensive study on the NAC genes of Tartary buckwheat (Fagopyrum tataricum), a large group of extensively cultivated medicinal and edible plants. The recently published Tartary buckwheat genome permits us to explore all the FtNAC genes on a genome-wide basis.

RESULTS

In the present study, 80 NAC (FtNAC) genes of Tartary buckwheat were obtained and named uniformly according to their distribution on chromosomes. Phylogenetic analysis of NAC proteins in both Tartary buckwheat and Arabidopsis showed that the FtNAC proteins are widely distributed in 15 subgroups with one subgroup unclassified. Gene structure analysis found that multitudinous FtNAC genes contained three exons, indicating that the structural diversity in Tartary buckwheat NAC genes is relatively low. Some duplication genes of FtNAC have a conserved structure that was different from others, indicating that these genes may have a variety of functions. By observing gene expression, we found that FtNAC genes showed abundant differences in expression levels in various tissues and at different stages of fruit development.

CONCLUSIONS

In this research, 80 NAC genes were identified in Tartary buckwheat, and their phylogenetic relationships, gene structures, duplication, global expression and potential roles in Tartary buckwheat development were studied. Comprehensive analysis will be useful for a follow-up study of functional characteristics of FtNAC genes and for the development of high-quality Tartary buckwheat varieties.

摘要

背景

NAC（NAM、ATAF1/2 和 CUC2）转录因子家族代表了一组大型植物特异性转录调控因子，参与植物的发育和对外界胁迫的响应。然而，对于广泛种植的药用和食用植物鞑靼荞麦（Fagopyrum tataricum）的 NAC 基因，尚未进行全面研究。最近发布的鞑靼荞麦基因组使我们能够在全基因组范围内探索所有的 FtNAC 基因。

结果

本研究中，从鞑靼荞麦基因组中获得并统一命名了 80 个 NAC（FtNAC）基因，根据其在染色体上的分布进行命名。对鞑靼荞麦和拟南芥 NAC 蛋白的系统发育分析表明，FtNAC 蛋白广泛分布于 15 个亚组中，其中一个亚组未分类。基因结构分析发现，许多 FtNAC 基因包含三个外显子，表明鞑靼荞麦 NAC 基因的结构多样性相对较低。一些 FtNAC 基因的重复基因具有与其他基因不同的保守结构，表明这些基因可能具有多种功能。通过观察基因表达，我们发现 FtNAC 基因在不同组织和果实发育的不同阶段表现出丰富的表达水平差异。

结论

本研究在鞑靼荞麦中鉴定出 80 个 NAC 基因，研究了它们的系统发育关系、基因结构、重复、全局表达以及在鞑靼荞麦发育中的潜在作用。综合分析将有助于进一步研究 FtNAC 基因的功能特征，并为开发高质量的鞑靼荞麦品种提供依据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/dd393e5b8ded/12864_2019_5500_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/b6eb513586e6/12864_2019_5500_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/94e74a75df72/12864_2019_5500_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/a78e7524a434/12864_2019_5500_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/ca70a620c1d5/12864_2019_5500_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/425843260a01/12864_2019_5500_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/d1436f617037/12864_2019_5500_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/43845e66e70d/12864_2019_5500_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/dd393e5b8ded/12864_2019_5500_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/b6eb513586e6/12864_2019_5500_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/94e74a75df72/12864_2019_5500_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/a78e7524a434/12864_2019_5500_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/ca70a620c1d5/12864_2019_5500_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/425843260a01/12864_2019_5500_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/d1436f617037/12864_2019_5500_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/43845e66e70d/12864_2019_5500_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8f59/6366116/dd393e5b8ded/12864_2019_5500_Fig8_HTML.jpg

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