Liu Qin, Li Shaocui, Du Guanghui, An Xia
School of Agriculture, Yunnan University, Kunming 650500, China.
Zhejiang Xiaoshan Institute of Cotton&Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China.
Plants (Basel). 2024 Sep 7;13(17):2514. doi: 10.3390/plants13172514.
Kenaf () 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 gene family of kenaf was analyzed at the whole genome level. A total of 15 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 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 gene family in kenaf in response to cadmium (Cd) stress, and are of great significance for screening related Cd tolerance genes in kenaf.
红麻（）是一种韧皮纤维作物，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是一种与天然抗性相关的巨噬细胞，在二价金属离子转运、植物生长发育和非生物胁迫中起重要作用。本研究在全基因组水平上分析了红麻的基因家族。共鉴定出15个基因。它们在染色体上分布不均。系统发育分析将15个HcNramp蛋白分为3个不同的亚家族。所有蛋白质都具有特定的基序4和基序6，属于同一亚家族的基因在结构和基序上相似。启动子富含激素响应、分生组织表达和环境胁迫响应元件。在不同处理下，基因在不同组织中的表达水平不同，且大多数首先在根中表达。这些发现可为了解红麻中基因家族在响应镉（Cd）胁迫中的潜在作用提供依据，对筛选红麻中相关的耐镉基因具有重要意义。
