识别调控缺钾条件下小麦主要营养素积累和最终产量的关键基因

IF 1.7 4区 生物学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Samar G. Thabet, Fatmah Ahmed Safhi, Ahmad M. Alqudah
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引用次数: 0

摘要

小麦缺钾会严重影响其他主要营养元素的积累,并影响各种产量性状。本研究调查了一组 111 个小麦品种,以评估它们对缺钾的反应。这些小麦品种接受了两种不同水平的钾处理:中度(K1)和低度(K2)。在这两种处理下,对小麦籽粒的四种主要营养元素(镁、钙、钾、磷)以及产量属性进行了分析。据统计,在低钾条件下,小麦品种的所有评估矿物质和产量性状都明显下降。全基因组关联研究(GWAS)分析确定了 366 个 SNP 标记,这些标记与所有评估的主要营养元素和产量参数都有显著关联,与钾处理无关。值得注意的是,有 14 个基因组区域与两种处理下的所有评估特征都有非常显著的关系。有趣的是,TraesCS1B02G359800 基因位于 3B 染色体上,被注释为携带 NGS、P、Mg_K2 和 Mg_K1 变异的蛋白激酶。蛋白激酶可调节离子转运体和通道(如高亲和力 K+ 转运体(HKT)家族)的活性,从而提高钾和其他宏量营养素的吸收和再分配。因此,将这些遗传学见解与现代育种技术相结合,有望培育出能够应对全球粮食安全挑战的优良小麦品种。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Identification of key genes regulating macronutrient accumulation and final yield in wheat under potassium deficiency

Identification of key genes regulating macronutrient accumulation and final yield in wheat under potassium deficiency

Potassium deficiency in wheat can significantly influence the accumulation of other macronutrients and affect various yield traits. Understanding the genetic factors controlling wheat macronutrient accumulation and yield attributes is important for improved nutritional wheat quality and human health under potassium deficiency This study investigated a set of 111 wheat accessions to assess their response to potassium deprivation. The accessions were subjected to two different levels of potassium treatment: moderate (K1) and low (K2). The wheat grains were analyzed for four macronutrients, mainly magnesium (Mg), calcium (Ca), potassium (K), and phosphorus (P), as well as yield attributes, under both treatments. A statistically significant decrease was observed for all assessed minerals and yield traits in wheat accessions under low potassium. Genome-wide association study (GWAS) analysis identified 366 SNP markers that were significantly linked with all assessed macronutrients and yield parameters, regardless of the potassium treatments. Remarkably, 14 genomic regions were identified that exhibited highly significant relationships with all evaluated characteristics under both treatments. Interestingly, the TraesCS1B02G359800 gene was located on chromosome 3B and annotated as protein kinases that harbor the variation of NGS, P, Mg_K2, and Mg_K1. Protein kinases can modulate the activity of ion transporters and channels, such as the High-Affinity K+ Transporter (HKT) family, to enhance the uptake and redistribution of potassium and other macronutrient. Therefore, integrating these genetic insights with modern breeding techniques holds the promise of developing superior wheat varieties that can meet the challenges of global food security.

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来源期刊
Plant Biotechnology Reports
Plant Biotechnology Reports 生物-生物工程与应用微生物
CiteScore
4.10
自引率
4.20%
发文量
72
审稿时长
>12 weeks
期刊介绍: Plant Biotechnology Reports publishes original, peer-reviewed articles dealing with all aspects of fundamental and applied research in the field of plant biotechnology, which includes molecular biology, genetics, biochemistry, cell and tissue culture, production of secondary metabolites, metabolic engineering, genomics, proteomics, and metabolomics. Plant Biotechnology Reports emphasizes studies on plants indigenous to the Asia-Pacific region and studies related to commercialization of plant biotechnology. Plant Biotechnology Reports does not exclude studies on lower plants including algae and cyanobacteria if studies are carried out within the aspects described above.
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