Nano selenium enhanced tomato resistance to leaf mold via activating salicylic acid defense pathways and regulating metabolic profiles as well as improved plant growth.

IF 3.8 1区农林科学 Q1 AGRONOMY

Pest Management Science Pub Date : 2025-09-21 DOI:10.1002/ps.70235

Yuping Liu,Rui Liu,Ning Zhang,Simin Yu,Yufan Nie,Dier Song,Yue Zhang,Jia-Qi Li,Canping Pan,Wentao Zhu,Zhiqiang Zhou,Jinling Diao

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引用次数: 0

Abstract

BACKGROUND Disease infection seriously threatens the healthy growth of tomatoes. In recent years, using nanomaterials to suppress crop disease damage has become a hotspot in agriculture. As an emerging nano-material, nano-selenium has been widely reported for improving crop growth and saving the damage caused by stresses such as pathogens and heavy metals on plants. RESULTS This study investigated the control of tomato leaf mold (Cladosporium fulvum) by applying nano-Se (5/10/25 mg L-1) on tomato seedlings and explored related mechanisms. We found: (i) Nano-Se applying (especially 10 mg L-1) significantly inhibited tomato leaf mold and reduced disease severity of seedlings (52.84%, 14 days after inoculation). This was because nano-Se significantly promoted the accumulation of salicylic acid (SA) through up-regulating biosynthesis genes expression by significantly up-regulating the gene expression related to MAPK cascade and calcium signaling. This thereby induced the genes expression (NPR1, TGA2/1/5, WRKY33, WRKY70 and WRKY54) of SA signaling pathway, enhancing resistance-genes (PR1/2/3) transcription and elevating antioxidant and resistance-related indicator levels, ultimately activating systemic acquired resistance (SAR) in tomato. Nano-Se also promoted jasmonic acid (JA) signaling pathway. In addition, metabolomic analysis indicated nano-Se promoted phenolic compounds from the phenylpropane pathway (α-tocopherol, chlorogenic acid and ferulic acid), polyamines, GABA and various amino acids accumulation of tomato seedlings, which also supported the above results. (ii) Nano-Se promoted the growth of tomato seedings by enhancing photosynthesis and increasing auxin level. CONCLUSION Compared to chemical fungicides, these findings suggested nano-Se provided a more promising and sustainable approach for managing diseases such as leaf mold and improving tomato plant growth. © 2025 Society of Chemical Industry.

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纳米硒通过激活水杨酸防御途径、调节代谢谱和促进植株生长来增强番茄对叶霉病的抗性。

番茄病害严重威胁着番茄的健康生长。近年来，利用纳米材料抑制作物病害已成为农业研究的热点。作为一种新兴的纳米材料，纳米硒在改善作物生长和减轻病原体和重金属等胁迫对植物造成的伤害方面得到了广泛的报道。结果研究了纳米硒（5/10/25 mg L-1）对番茄叶霉病（Cladosporium fulvum）的防治效果，并探讨了其防治机制。结果表明：(1)施用纳米硒（尤其是10 mg L-1）显著抑制了番茄叶霉病，降低了幼苗的病重（52.84%，接种后14 d）。这是因为纳米硒通过显著上调MAPK级联和钙信号相关基因的表达，通过上调生物合成基因的表达，显著促进了水杨酸（SA）的积累。从而诱导SA信号通路基因（NPR1、TGA2/1/5、WRKY33、WRKY70和WRKY54）的表达，增强抗性基因（PR1/2/3）的转录，提高抗氧化和抗性相关指标水平，最终激活番茄的系统性获得性抗性（SAR）。纳米硒还能促进茉莉酸（jasmonic acid， JA）信号通路。此外，代谢组学分析表明，纳米硒促进了苯丙烷途径的酚类化合物（α-生育酚、绿原酸和阿威酸）、多胺、GABA和各种氨基酸在番茄幼苗中的积累，也支持了上述结果。（ii）纳米硒通过增强光合作用和提高生长素水平促进番茄幼苗生长。结论与化学杀菌剂相比，纳米硒在防治番茄叶霉病和促进植株生长方面具有更大的前景和可持续性。©2025化学工业协会。

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来源期刊

Pest Management Science 农林科学-昆虫学

CiteScore

7.90

自引率

9.80%

发文量

553

审稿时长

4.8 months

期刊介绍： Pest Management Science is the international journal of research and development in crop protection and pest control. Since its launch in 1970, the journal has become the premier forum for papers on the discovery, application, and impact on the environment of products and strategies designed for pest management. Published for SCI by John Wiley & Sons Ltd.