类黄酮缓解银杏叶中的纳米塑料应力

IF 6 1区 生物学 Q1 PLANT SCIENCES Plant, Cell & Environment Pub Date : 2024-11-04 DOI:10.1111/pce.15247
Jiawen Cui, Xiang Li, Quan Gan, Zhaogeng Lu, Yicheng Du, Iqra Noor, Li Wang, Sian Liu, Biao Jin
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引用次数: 0

摘要

微塑料/纳米塑料是全球关注的首要环境问题,并激发了对植物-纳米塑料相互作用的大量研究。以往的研究从不同层面考察了植物对纳米塑料压力的反应。植物专化(次生)代谢物在植物对环境胁迫的响应中起着至关重要的作用,而它们在纳米塑料胁迫响应中的作用尚不清楚。在这里,我们系统地研究了银杏(一种具有强大代谢物驱动防御能力的物种)对聚苯乙烯纳米塑料(PSNPs)的生理和生化反应。PSNPs 对幼苗的生长产生了负面影响,并诱发了植物毒性、氧化应激和核损伤。值得注意的是,PSNPs 会导致黄酮类化合物大量积累,从而增强植物对 PSNP 胁迫的耐受性和解毒能力。为了确定这一发现在植物中是否具有普遍性,我们让拟南芥、杨树和番茄承受了PSNP胁迫,并验证了这些物种在类黄酮增强方面的共同反应。为了进一步证实类黄酮的作用,我们采用了基因转化和染色技术,从而验证了类黄酮在减轻NP诱导的过度氧化应激方面的重要性。对具有增强类黄酮的转基因植物进行的基质分析进一步表明,下游途径发生了改变,将更多的能量用于抵御纳米塑料压力。总之,我们的研究结果揭示了类黄酮在增强植物对纳米塑料胁迫的恢复力方面的多方面作用,为植物应对纳米塑料污染提供了新的知识。
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Flavonoids Mitigate Nanoplastic Stress in Ginkgo biloba.

Microplastics/nanoplastics are a top global environmental concern and have stimulated surging research into plant-nanoplastic interactions. Previous studies have examined the responses of plants to nanoplastic stress at various levels. Plant-specialized (secondary) metabolites play crucial roles in plant responses to environmental stress, whereas their roles in response to nanoplastic stress remain unknown. Here, we systematically examined the physiological and biochemical responses of Ginkgo biloba, a species with robust metabolite-driven defenses, to polystyrene nanoplastics (PSNPs). PSNPs negatively affected seedling growth and induced phytotoxicity, oxidative stress, and nuclear damage. Notably, PSNPs caused significant flavonoid accumulation, which enhances plant tolerance and detoxification against PSNP stress. To determine whether this finding is universal in plants, we subjected Arabidopsis, poplar, and tomato to PSNP stress and verified the common response of enhanced flavonoids across these species. To further confirm the role of flavonoids, we employed genetic transformation and staining techniques, validating the importance of flavonoids in mitigating excessive oxidative stress induced by NPs. Matrix analysis of transgenic plants with enhanced flavonoids further demonstrated altered downstream pathways, allocating more energy towards resilience against nanoplastic stress. Collectively, our results reveal the flavonoid multifaceted roles in enhancing plant resilience to nanoplastic stress, providing new knowledge about plant responses to nanoplastic contamination.

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来源期刊
Plant, Cell & Environment
Plant, Cell & Environment 生物-植物科学
CiteScore
13.30
自引率
4.10%
发文量
253
审稿时长
1.8 months
期刊介绍: Plant, Cell & Environment is a premier plant science journal, offering valuable insights into plant responses to their environment. Committed to publishing high-quality theoretical and experimental research, the journal covers a broad spectrum of factors, spanning from molecular to community levels. Researchers exploring various aspects of plant biology, physiology, and ecology contribute to the journal's comprehensive understanding of plant-environment interactions.
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