Foliar application of Pluronic P85-grafted single-walled carbon nanotubes induces thylakoid membrane structural remodeling

IF 2.4 4区生物学 Q2 PLANT SCIENCES

Acta Physiologiae Plantarum Pub Date : 2023-11-03 DOI:10.1007/s11738-023-03614-8

Nia Petrova, Svetla Todinova, Petar Petrov, Violeta Velikova, Sashka Krumova

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Abstract

Moderation and optimization of the photosynthetic function of higher plants by nanomaterials is under intensive investigation, but remain still far from practical utilization. We have previously demonstrated that foliar spraying of Pluronic P85-grafted single-walled carbon nanotubes (P85-SWCNT) affects the functionality and structural organization of the photosynthetic thylakoid membranes in pea plants. In the present work, we further study in more details the structural changes in the photosynthetic machinery induced by P85-SWCNT treatment. Evidences are provided that P85-SWCNT induces thylakoid membrane remodeling, namely—partial membrane unstacking, thermal stabilization of the major light-harvesting complex of photosystem II and its migration toward the stroma lamellae. The observed effects are most pronounced for the highest used concentration of 300 mg/L P85-SWCNT. Our results reveal that P85-SWCNT in concentrations below 300 mg/L is an interesting object for further investigation of the potential application of nanomaterials in plant science, e.g., as nanocarriers of beneficial substances reaching the photosynthetic apparatus.

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Pluronic P85接枝单壁碳纳米管的叶片应用诱导类囊体膜结构重塑

纳米材料对高等植物光合功能的调节和优化正在深入研究中，但仍远未得到实际应用。我们之前已经证明，叶面喷洒Pluronic P85接枝的单壁碳纳米管（P85-SWCNT）会影响豌豆植物光合类囊体膜的功能和结构组织。在本工作中，我们进一步详细研究了P85-SWCNT处理诱导的光合机制的结构变化。有证据表明，P85-SWCNT诱导类囊体膜重构，即部分膜脱嵌、光系统II的主要光收集复合物的热稳定及其向基质片层的迁移。观察到的效果对于300mg/L P85-SWCNT的最高使用浓度是最显著的。我们的研究结果表明，浓度低于300mg/L的P85-SWCNT是进一步研究纳米材料在植物科学中的潜在应用的一个有趣的对象，例如，作为到达光合装置的有益物质的纳米载体。

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来源期刊

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.