剑麻(Hibiscus cannabinus)Nramp 基因家族的全基因组分析:鉴定、表达分析及对镉胁迫的响应

Plants Pub Date : 2024-09-07 DOI:10.3390/plants13172514
Qin Liu, Shaocui Li, Guanghui Du, Xia An
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摘要

剑麻(Hibiscus cannabinu)是一种禾本科韧皮纤维作物,具有耐受和积累重金属的能力,被认为是一种潜在的重金属积累和修复植物。Nramp 是一种天然抗性相关巨噬细胞,在二价金属离子转运、植物生长发育和非生物胁迫中发挥着重要作用。本研究从全基因组水平分析了剑麻的 Nramp 基因家族。共鉴定出 15 个 HcNramp 基因。它们在染色体上分布不均。系统进化分析将 15 个 HcNramp 蛋白分为 3 个不同的亚家族。所有蛋白都有特异的基调 4 和基调 6,属于同一亚家族的基因在结构和基调上都很相似。启动子中含有丰富的激素反应、分生组织表达和环境胁迫反应元件。在不同的处理条件下,HcNramp基因在不同组织中的表达水平不同,其中大部分基因首先在根中表达。这些发现可为了解 Nramp 基因家族在铁线莲中应对镉胁迫的潜在作用提供依据,对筛选铁线莲中相关的耐镉基因具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Genome-Wide Analysis of the Nramp Gene Family in Kenaf (Hibiscus cannabinus): Identification, Expression Analysis, and Response to Cadmium Stress
Kenaf (Hibiscus cannabinu) is a grass bast fiber crop that has the ability to tolerate and accumulate heavy metals, and it has been considered as a potential heavy metal accumulator and remediation plant. Nramp is a natural resistance-related macrophage, which plays an important role in the transport of divalent metal ions, plant growth and development, and abiotic stress. In this study, the Nramp gene family of kenaf was analyzed at the whole genome level. A total of 15 HcNramp genes were identified. They are distributed unevenly on chromosomes. Phylogenetic analysis classified 15 HcNramp proteins into 3 different subfamilies. All proteins share specific motif 4 and motif 6, and the genes belonging to the same subfamily are similar in structure and motif. The promoters are rich in hormone response, meristem expression, and environmental stress response elements. Under different treatments, the expression levels of HcNramp genes vary in different tissues, and most of them are expressed in roots first. These findings can provide a basis for understanding the potential role of the Nramp gene family in kenaf in response to cadmium (Cd) stress, and are of great significance for screening related Cd tolerance genes in kenaf.
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