Co-application of zinc and oligosaccharides enhances zinc bioavailability, yield and nutritional quality of rice

IF 6.1 2区生物学 Q1 PLANT SCIENCES

Plant Physiology and Biochemistry Pub Date : 2025-04-29 DOI:10.1016/j.plaphy.2025.109964

Sajjad Ahmad, Xin Ouyang, Songpo Duan, Zaid Khan, Hong Shen

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引用次数: 0

Abstract

Zinc (Zn) deficiency is a major abiotic factor impacting crop performance and human health. The co-application of oligosaccharides (Olg) and Zn (Olg-Zn) is an effective approach in improving Zn bioavailability, crop yield and nutritional quality. The current findings demonstrate that Olg-Zn application enhances photosynthesis, root-shoot biomass, grain yield, Zn uptake and Zn dissolution in gastric and gastrointestinal juices while reducing phytic acid and increasing Zn bioavailability. We conducted hydroponics and soil culture studies to investigate the synergy of Olg-Zn on rice growth, yield and grain quality. We found that the most effective treatments in hydroponics and soil cultures were Olg-Zn3 and Olg-ZnS2, which improved several morphological indices, such as root-shoot length and root-shoot fresh and dry weight. The findings reveal that higher photosynthesis traits and chlorophyll contents were recorded in Olg-Zn3 and Olg-ZnS2 treatments in hydroponics and soil cultures, respectively. Furthermore, compared to single Zn and Olg treatments, the Olg-Zn combination enhanced the uptake of Zn in roots, shoots and grains, resulting in higher grain yield in hydroponics (6.8 %–11.4 %) and soil culture (4.6 %–9.1 %). The application of Olg-Zn reduced phytic acid concentration by 4.7–15.3 % in hydroponics and 5.6–12.3 % in soil culture, improving Zn bioavailability by 2.2–16.6 % and 11.1–15.8 % by upregulating the expression level of Zn transporter genes, ultimately enhancing the nutritional quality of rice. Additionally, Olg-Zn improved Zn dissolution in gastric juice by 3.1–21.4 % and 3.5–19.6 %, and Zn dissolution in gastrointestinal juice was boosted by 3.7–19.7 % and 5.9–17.2 %, facilitating better Zn absorption and bioavailability in humans. However, treatments like Olg-ZnS4 and Olg-ZnS5 in soil culture slightly reduced rice yield and nutritional quality by hindering Zn bioavailability and increasing phytic acid concentration. In summary, this study highlights that an appropriate Olg-Zn combination enhances Zn uptake, leading to improved rice yield and quality, thus potentially benefitting human health.

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锌与低聚糖配合施用可提高水稻锌的生物利用度、产量和营养品质

锌缺乏是影响作物生产性能和人体健康的主要非生物因素。低聚糖（Olg）与锌（Olg-Zn）混施是提高锌生物利用度、作物产量和营养品质的有效途径。目前的研究结果表明，施用Olg-Zn可以提高光合作用、根茎生物量、籽粒产量、锌吸收和锌在胃液和胃肠道液中的溶解，同时降低植酸，提高锌的生物利用度。通过水培和土壤栽培研究，探讨了Olg-Zn对水稻生长、产量和籽粒品质的协同效应。结果表明，水培和土培处理中最有效的处理是Olg-Zn3和Olg-ZnS2，这两种处理均能改善根冠长、根冠鲜重和根冠干重等形态指标。结果表明，水培和土壤培养条件下，Olg-Zn3和Olg-ZnS2处理的光合特性和叶绿素含量均较高。此外，与单一Zn和Olg处理相比，Olg-Zn组合处理提高了根、芽和籽粒对Zn的吸收，水培（6.8% ~ 11.4%）和土壤栽培（4.6% ~ 9.1%）籽粒产量。施用Olg-Zn使水培条件下植酸浓度降低4.7% ~ 15.3%，土壤条件下植酸浓度降低5.6 ~ 12.3%，通过上调锌转运基因的表达水平，使锌的生物有效性分别提高2.2% ~ 16.6%和11.1% ~ 15.8%，最终提高水稻营养品质。此外，Olg-Zn提高了胃液中锌的溶出度，分别提高了3.1 ~ 21.4%和3.5 ~ 19.6%，提高了胃肠液中锌的溶出度，分别提高了3.7 ~ 19.7%和5.9 ~ 17.2%，促进了锌在人体中的吸收和生物利用度。而在土壤栽培中，Olg-ZnS4和Olg-ZnS5处理通过抑制锌的生物有效性和增加植酸浓度，使水稻产量和营养品质略有下降。综上所述，本研究强调，适当的Olg-Zn组合可以提高锌的吸收，从而提高水稻的产量和品质，从而潜在地有益于人类健康。

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来源期刊

Plant Physiology and Biochemistry 生物-植物科学

CiteScore

11.10

自引率

3.10%

发文量

410

审稿时长

33 days

期刊介绍： Plant Physiology and Biochemistry publishes original theoretical, experimental and technical contributions in the various fields of plant physiology (biochemistry, physiology, structure, genetics, plant-microbe interactions, etc.) at diverse levels of integration (molecular, subcellular, cellular, organ, whole plant, environmental). Opinions expressed in the journal are the sole responsibility of the authors and publication does not imply the editors'' agreement. Manuscripts describing molecular-genetic and/or gene expression data that are not integrated with biochemical analysis and/or actual measurements of plant physiological processes are not suitable for PPB. Also "Omics" studies (transcriptomics, proteomics, metabolomics, etc.) reporting descriptive analysis without an element of functional validation assays, will not be considered. Similarly, applied agronomic or phytochemical studies that generate no new, fundamental insights in plant physiological and/or biochemical processes are not suitable for publication in PPB. Plant Physiology and Biochemistry publishes several types of articles: Reviews, Papers and Short Papers. Articles for Reviews are either invited by the editor or proposed by the authors for the editor''s prior agreement. Reviews should not exceed 40 typewritten pages and Short Papers no more than approximately 8 typewritten pages. The fundamental character of Plant Physiology and Biochemistry remains that of a journal for original results.