Responses of tropical legumes to nickel stress: impacts on growth, foliar structure, and nitrogen metabolism

IF 2.2 4区 生物学 Q2 PLANT SCIENCES
Tassia Caroline Ferreira, Patricia Fernanda Rosalem, Maiara Luzia Grigoli Olivio, Beatriz Silvério dos Santos, Nayane Cristina Pires Bomfim, Aline Renee Coscione, Aline Redondo Martins, Liliane Santos de Camargos
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Abstract

Nickel, although an essential micronutrient at low concentrations, can exert detrimental effects on plant growth and development when present in excess, particularly due to anthropogenic activities like industrial processes. Leguminous plants, including Calopogonium mucunoides (Calopo) and Canavalia ensiformis (Jack bean), renowned for their nitrogen-fixing symbioses with rhizobia and their potential to enhance soil fertility, were investigated for their differential responses to moderate Ni stress. This study examined the impact of Ni on biomass production, Ni accumulation, leaf anatomy, and nitrogen metabolism in these legumes. Results demonstrated contrasting responses: Jack bean exhibited higher Ni accumulation in both leaves and roots, concomitant with enhanced growth and pronounced anatomical modifications, suggesting greater tolerance. In contrast, Calopo displayed significant alterations in root protein and amino acid content. Principal component analysis corroborated these findings, highlighting distinct acclimatization strategies employed by each species. This research provides valuable insights into the complex impact of Ni on plant biodiversity, emphasizing the importance of investigating understudied species to comprehend the diverse physiological responses to trace element stress.

Abstract Image

热带豆科植物对镍胁迫的响应:对生长、叶片结构和氮代谢的影响
镍虽然是一种低浓度的必需微量营养素,但当过量存在时,特别是由于工业过程等人为活动,会对植物的生长和发育产生有害影响。以豆科植物Calopogonium mucunoides (Calopo)和Canavalia ensiformis (Jack bean)为研究对象,研究了它们对中度Ni胁迫的不同反应,这些植物以与根瘤菌的固氮共生和提高土壤肥力的潜力而闻名。本研究考察了Ni对这些豆科植物生物量生产、Ni积累、叶片解剖和氮代谢的影响。结果显示了截然不同的反应:杰克豆在叶子和根中都表现出更高的镍积累,伴随着生长增强和明显的解剖改变,表明更强的耐受性。相比之下,卡洛普在根蛋白和氨基酸含量上表现出显著的变化。主成分分析证实了这些发现,突出了每个物种采用的不同适应策略。该研究为揭示Ni对植物生物多样性的复杂影响提供了有价值的见解,强调了对未被充分研究的物种进行调查以了解微量元素胁迫下不同生理反应的重要性。
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来源期刊
Acta Physiologiae Plantarum
Acta Physiologiae Plantarum 生物-植物科学
CiteScore
5.10
自引率
3.80%
发文量
125
审稿时长
3.1 months
期刊介绍: Acta Physiologiae Plantarum is an international journal established in 1978 that publishes peer-reviewed articles on all aspects of plant physiology. The coverage ranges across this research field at various levels of biological organization, from relevant aspects in molecular and cell biology to biochemistry. The coverage is global in scope, offering articles of interest from experts around the world. The range of topics includes measuring effects of environmental pollution on crop species; analysis of genomic organization; effects of drought and climatic conditions on plants; studies of photosynthesis in ornamental plants, and more.
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