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甘薯及其两个二倍体近缘种中铁蛋白家族的全基因组鉴定与表达分析

Genome-wide identification and expression analysis of the ferritin family in sweetpotato and its two diploid relatives.

作者信息

Peng Jia-Li, Xu Hui-Ni, Yang Wan-Lin, Li Xu

机构信息

Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650224, Yunnan, China.

Industrial Crop Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650205, China.

出版信息

BMC Plant Biol. 2025 Jun 5;25(1):765. doi: 10.1186/s12870-025-06732-2.

DOI:10.1186/s12870-025-06732-2
PMID:40474077
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12139147/
Abstract

Ferritin (FER), a type of iron-storing proteins, play an essential role in iron storage and in protection against oxidative stress. However, there is limited detailed information regarding FERs in sweetpotato. In this study, a total of 17 putative FER genes, 7, 5 and 5 FERs in sweetpotato (I. batatas, 2n = 6x = 90) and its two diploid relatives I. trifida (2n = 2x = 30) and I. triloba (2n = 2x = 30), located on chromosomes were identified. Phylogenetic analysis revealed that these genes are divided into two different groups. Promoter analysis revealed that IbFER promoters contained a number of abiotic/biotic stress-responsive elements, hormone-responsive element, and iron-dependent regulatory sequence. The structural motif analysis of FER proteins showed that Euk_Ferritin domain was identified near the C-terminus and the structures were relatively conserved in sweetpotato and its two diploid relatives. Transcriptome and RT-qPCR analysis demonstrated that the expression of FERs were detected in different tissues and showed tissue specificity, and they responded to abiotic stresses, such as drought, salt and Fe deficiency. Our results provide a theoretical basis for future genetic research, development of breeding strategies against abiotic stresses and food enrichment with iron in sweetpotato.

摘要

铁蛋白（FER）是一种铁储存蛋白，在铁储存和抵御氧化应激中发挥着重要作用。然而，关于甘薯中铁蛋白的详细信息有限。在本研究中，共鉴定出17个推定的FER基因，分别位于甘薯（Ipomoea batatas，2n = 6x = 90）及其两个二倍体近缘种三浅裂野牵牛（I. trifida，2n = 2x = 30）和三裂叶薯（I. triloba，2n = 2x = 30）的染色体上，其中甘薯中有7个、三浅裂野牵牛中有5个、三裂叶薯中有5个。系统发育分析表明，这些基因分为两个不同的组。启动子分析表明，甘薯铁蛋白（IbFER）启动子包含许多非生物/生物胁迫响应元件、激素响应元件和铁依赖性调控序列。FER蛋白的结构基序分析表明，在C末端附近鉴定出真核铁蛋白结构域，并且该结构在甘薯及其两个二倍体近缘种中相对保守。转录组和RT-qPCR分析表明，FER基因在不同组织中均有表达并具有组织特异性，且它们对干旱、盐和缺铁等非生物胁迫有响应。我们的研究结果为今后甘薯的遗传研究、抗非生物胁迫育种策略的开发以及铁元素强化食品提供了理论依据。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c54/12139147/fa2704889b0f/12870_2025_6732_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c54/12139147/2ec4787130c1/12870_2025_6732_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c54/12139147/e2b727cb1cf0/12870_2025_6732_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c54/12139147/4bc5e2cd1b39/12870_2025_6732_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c54/12139147/abba347595f5/12870_2025_6732_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c54/12139147/5b719e6c9cba/12870_2025_6732_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0c54/12139147/ac777aee680d/12870_2025_6732_Fig8_HTML.jpg
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本文引用的文献

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来自[具体来源未明确]的铁蛋白同源基因的异源表达增强了植物对铁毒性和过氧化氢胁迫的耐受性。
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Multiple roles of wheat ferritin genes during stress treatment and TaFER5D-1 as a positive regulator in response to drought and salt tolerance.小麦铁蛋白基因在胁迫处理过程中的多重作用及 TaFER5D-1 作为响应干旱和耐盐的正向调控因子。
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Pfam: The protein families database in 2021.Pfam：2021 年的蛋白质家族数据库。
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