Genetic Variation and Quantitative Trait Loci Analysis of the Maize Ionome in Response to Phosphorus Fertilisation.

IF 6.3 1区 生物学 Q1 PLANT SCIENCES
Sandra Roller, Thea M Weiß, Volker Hahn, Tobias Würschum
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引用次数: 0

Abstract

Improving the nutritional quality of crops is crucial for human health, livestock, and agricultural productivity, especially on nutrient-limited soils. To address this, we investigated the variation and the genetic basis of mineral content, including, among others, calcium, iron, phosphorus, and zinc, in a diverse panel of maize (Zea mays L.) grown across environments. Our results show that genetic variation significantly contributes to differences in mineral content. Genotype-by-environment interaction and environmental factors, such as reduced phosphorus fertilisation, substantially impact the ionome composition, particularly decreasing zinc content and altering grain quality. Correlations between the 12 minerals were mostly positive, with variation observed in mineral composition between tissues and in translocation from vegetative to generative tissue. In addition, elite lines exhibited distinct mineral profiles compared to landraces. Genome-wide association mapping revealed a quantitative inheritance of the minerals and few common quantitative trait loci. Significantly associated markers were found in proximity to candidate genes involved in processes like mineral transport, detoxification and storage, which represent potential targets for marker-assisted selection to improve nutritional quality in maize. In conclusion, our results highlight the temporal and spatial dynamics of the maize ionome as a basis toward its targeted design for future agriculture.

玉米离体对磷肥响应的遗传变异及数量性状位点分析。
提高作物的营养品质对人类健康、牲畜和农业生产力至关重要,特别是在养分有限的土壤上。为了解决这个问题,我们研究了在不同环境下生长的不同玉米(Zea mays L.)中矿物质含量的变化和遗传基础,包括钙、铁、磷和锌等。我们的研究结果表明,遗传变异对矿物质含量的差异有显著影响。基因型与环境的相互作用和环境因素(如磷施用减少)显著影响离子组组成,特别是锌含量降低和籽粒品质改变。12种矿物质之间的相关性大多为正相关,在不同组织之间以及从营养组织到生殖组织的转运中观察到矿物质组成的变化。此外,与地方品种相比,精英系表现出不同的矿物特征。全基因组关联图谱揭示了矿物质的数量遗传和少数共同的数量性状位点。在参与矿物质运输、解毒和储存等过程的候选基因附近发现了显著相关的标记,这代表了标记辅助选择提高玉米营养品质的潜在目标。总之,我们的研究结果突出了玉米离合组的时空动态,为未来农业的目标设计提供了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Plant, Cell & Environment
Plant, Cell & Environment 生物-植物科学
CiteScore
13.30
自引率
4.10%
发文量
253
审稿时长
1.8 months
期刊介绍: Plant, Cell & Environment is a premier plant science journal, offering valuable insights into plant responses to their environment. Committed to publishing high-quality theoretical and experimental research, the journal covers a broad spectrum of factors, spanning from molecular to community levels. Researchers exploring various aspects of plant biology, physiology, and ecology contribute to the journal's comprehensive understanding of plant-environment interactions.
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