Facilitate zinc biofortification and nutritional quality of wheat by spraying endophytic bacteria from zinc hyperaccumulator Sedum alfredii Hance

IF 3.9 2区农林科学 Q1 AGRONOMY

Plant and Soil Pub Date : 2025-03-31 DOI:10.1007/s11104-025-07406-6

Jiayuan Liao, Zhesi Li, Xuan Chen, Zhipeng Hu, Ziyan Fan, Ancao Pan, Lukuan Huang, Qizhen Liu, Chao Yu, Ying Feng

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引用次数: 0

Abstract

Background and aims

Microbial-mediated Zinc (Zn) biofortification, is an environmentally friendly strategy for sustainable agriculture. In this study, the effects of foliar spraying of endophytic bacteria from Zn hyperaccumulator Sedum alfredii Hance (S. alfredii) on the growth, Zn uptake and Zn nutritional quality of wheat (Triticum aestivum L.) were evaluated in a field experiment.

Methods

The isolated endophytic bacteria were cultivated into microbial fertilizers and applied at the jointing, heading, flowering and grain-filling stages of wheat. After harvest, the agronomic traits, Zn and other mineral element contents of wheat, as well as the contents of Zn and available Zn in the soil were determined. The physiologically-based extraction test (PBET) was used to evaluate the absorption of edible Zn in grains by the human body.

Results

Spraying endophytic bacteria optimized the wheat agronomic traits, increased the yield of wheat, and improved available Zn concentration in rhizosphere soil. Among the 10 strains, SaPA1, SaVA1, SaPS1, SaPS3, and SaEN1 showed notable abilities to promote the uptake and accumulation of Zn in wheat, with an increase rate of grain Zn concentration by up to 42.56%. Furthermore, those strains could not only reduce the phytic acid (PA) content but also increased the bioaccessible Zn concentration in grains. In addition, the concentration of other trace elements was also improved after sprayed certain strains.

Conclusion

Our research indicated that selected endophytic bacteria of Zn hyperaccumulator can be used as microbial fertilizers for biofortification and enhancing the nutrition of trace elements in crop.

Graphical Abstract

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喷施锌超富集植物Sedum alfredii Hance内生细菌促进小麦锌的生物强化和营养品质

背景与目的微生物介导的锌（Zn）生物强化是一种环境友好型可持续农业战略。通过田间试验，研究了锌超富集植物Sedum alfredii Hance （S. alfredii）叶面喷施内生细菌对小麦（Triticum aestivum L.）生长、锌吸收和锌营养品质的影响。方法将分离得到的内生细菌培养成微生物肥料，分别施用于小麦拔节、抽穗、开花期和灌浆期。收获后测定小麦的农艺性状、锌等矿质元素含量以及土壤中锌和速效锌含量。采用生理提取试验（PBET）评价了食用锌在谷物中的人体吸收。结果喷施内生菌优化了小麦农艺性状，提高了小麦产量，改善了根际土壤有效锌浓度。10个菌株中，SaPA1、SaVA1、SaPS1、SaPS3和SaEN1对小麦锌的吸收和积累表现出显著的促进作用，籽粒锌浓度的提高率最高可达42.56%。此外，这些菌株不仅能降低籽粒植酸（PA）含量，还能提高籽粒生物可溶锌（Zn）浓度。此外，某些菌株喷施后，其他微量元素的浓度也有所提高。结论经筛选的锌超积累菌内生菌可作为微生物肥料，对作物进行生物强化，提高作物微量元素营养。图形抽象

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 and Soil 农林科学-农艺学

CiteScore

8.20

自引率

8.20%

发文量

543

审稿时长

2.5 months

期刊介绍： Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.