硒对缺铁条件下大豆光合作用性能的正向调节作用

IF 2.2 4区 生物学 Q2 PLANT SCIENCES Theoretical and Experimental Plant Physiology Pub Date : 2024-05-07 DOI:10.1007/s40626-024-00330-7
Allan de Marcos Lapaz, Camila Hatsu Pereira Yoshida, Daniel Gomes Coelho, Wagner Luiz Araujo, Maximiller Dal-Bianco, Cleberson Ribeiro
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引用次数: 0

摘要

虽然铁(Fe)在大多数农业土壤中含量丰富,但其对植物的生物利用率有限。缺铁会导致植物代谢产物发生重大变化,影响植物的生命周期。在这种情况下,硒(Se)被证明对防止缺铁有很好的效果。然而,很少有研究探讨硒对铁缺乏有害影响的作用,主要是对大豆作物的影响。因此,本研究旨在评估 Se 对缺铁大豆植株的干重、根和芽中铁的浓度以及光合作用和初级代谢的影响。实验采用完全随机设计,共设 4 个处理:1)缺铁不加硒;2)缺铁加硒;3)缺铁加硒(对照);4)缺铁加硒。我们的研究结果表明,缺铁加缺硒会显著降低植物的芽和根的干重以及铁的浓度。此外,缺铁还会对光合特性产生不利影响,而经过硒处理的植株则表现出更高的二氧化碳净同化率,并提高了羧化效率和光化学特性。此外,缺铁还对初级代谢产生负面影响,导致蔗糖和氨基酸的积累发生变化,蛋白质浓度和氨含量降低。相比之下,Se 处理的植株蔗糖积累较少,蛋白质浓度保持不变。这些发现凸显了 Se 作为一种有价值的干预措施来缓解大豆作物中铁缺乏症的潜力。
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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Positive modulation of selenium on photosynthetic performance in soybean under iron depletion

Although iron (Fe) is abundant in most agricultural soils, its bioavailability to plants is limited. The Fe deficiency can cause significant changes in plant metabolites, impacting the plant’s life cycle. In this context, selenium (Se) has been shown promising effects against Fe deficiency. However, there are few studies addressing the role of Se against the deleterious effects of Fe deficiency, mainly with the soybean crop. Hence, this study aimed to evaluate the effects of Se on dry mass, Fe concentration in the roots and shoots, as well as the photosynthetic performance and primary metabolism in soybean plants subjected to Fe deficiency. The experimental design used was completely randomized with 4 treatments: 1) absence of Fe without Se; 2) absence of Fe with Se; 3) sufficiency of Fe without Se (control); and 4) sufficiency of Fe with Se. Our results demonstrated that Fe deficiency combined with the absence of Se significantly reduced shoot and root dry mass, as well as Fe concentration in plants. Additionally, Fe deficiency had a detrimental impact on photosynthetic traits, whereas Se-treated plants exhibited a higher net CO2 assimilation rate and improved carboxylation efficiency and photochemical characteristics. Moreover, Fe deficiency negatively influenced primary metabolism, leading to the altered accumulation of sucrose and amino acids, and reduced protein concentration and ammonia. In contrast, Se-treated plants showed lower accumulation of sucrose and maintenance of protein concentration. These findings highlight the potential of Se as a valuable intervention to mitigate Fe deficiency in soybean crops.

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来源期刊
CiteScore
4.20
自引率
7.70%
发文量
32
期刊介绍: The journal does not publish articles in taxonomy, anatomy, systematics and ecology unless they have a physiological approach related to the following sections: Biochemical Processes: primary and secondary metabolism, and biochemistry; Photobiology and Photosynthesis Processes; Cell Biology; Genes and Development; Plant Molecular Biology; Signaling and Response; Plant Nutrition; Growth and Differentiation: seed physiology, hormonal physiology and photomorphogenesis; Post-Harvest Physiology; Ecophysiology/Crop Physiology and Stress Physiology; Applied Plant Ecology; Plant-Microbe and Plant-Insect Interactions; Instrumentation in Plant Physiology; Education in Plant Physiology.
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