Tetranychus ludeni (Acari: Tetranychidae) infestation triggers a spatiotemporal redox response dependent on soybean genotypes.

IF 3.6 3区 生物学 Q1 PLANT SCIENCES Planta Pub Date : 2024-11-02 DOI:10.1007/s00425-024-04566-0
Wesley Borges Wurlitzer, Julia Renata Schneider, Joaquim A G Silveira, Maria Goreti de Almeida Oliveira, Mateusz Labudda, Geraldo Chavarria, Ani Caroline Weber, Lucélia Hoehne, Gizele Martins Pinheiro, Naiara Nunes Vinhas, Luana Fabrina Rodighero, Noeli Juarez Ferla
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Abstract

Main conclusion: The redox homeostasis and photosynthetic pigments changes vary with Tetranychus ludeni infestation, with longer-cycle genotypes showing greater tolerance and efficiency in antioxidant defense. Infestations of Tetranychus ludeni Zacher (Tetranychidae) have been frequently observed in soybean plants. In this context, understanding the oscillation of redox homeostasis is crucial for detecting and assessing the stress levels caused in the plants by these organisms. The impacts of these infestations on redox metabolism and photosynthetic pigments are currently unknown. Therefore, we examined the hypothesis that T. ludeni infestations in soybean plants can influence redox homeostasis and photosynthetic pigments in a spatiotemporal manner, varying between different infestation times, modules and genotypes. For this purpose, soybean plants of the genotypes Monsoy, maturity group 5.7, and Brasmax, maturity group 6.3, grown in a controlled environment, were exposed to infestation and evaluated at two periods: 14 and 24 days. A variation in the distribution of T. ludeni within the infested plants over time increased the activity of ascorbate peroxidase and catalase, especially in Monsoy, reducing the content of hydrogen peroxide and superoxide, which prevented lipid peroxidation in the apical region in both genotypes. In the basal region, low chlorophyll indices corroborated by the yellow coloration of trifoliate leaves, high levels of membrane stability loss, and accumulation of hydrogen peroxide and superoxide characterized senescent trifoliate leaves in Brasmax, 24 days post infestation. Thus, the infestation of T. ludeni has a complex and significant impact on the redox metabolism of soybean plants, especially in shorter-cycle genotypes such as Brasmax. Furthermore, the oscillation of homeostasis can be considered as a good biochemical marker for selecting more suitable genotypes that are less sensitive and prone to infestations.

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大豆四膜虫(Acari: Tetranychidae)侵袭引发的时空氧化还原反应取决于大豆基因型。
主要结论氧化还原平衡和光合色素的变化随大豆四膜虫侵染而变化,周期长的基因型表现出更强的耐受性和抗氧化防御能力。在大豆植株中经常观察到四膜虫(Tetranychus ludeni Zacher)的侵染。在这种情况下,了解氧化还原平衡的振荡对于检测和评估这些生物对植物造成的压力水平至关重要。这些虫害对氧化还原代谢和光合色素的影响目前尚不清楚。因此,我们研究了一个假设,即大豆植株中的 T. ludeni 侵染会以时空方式影响氧化还原平衡和光合色素,不同的侵染时间、模块和基因型会有不同的影响。为此,对在受控环境中生长的大豆植株(成熟度为 5.7 级的 Monsoy 和成熟度为 6.3 级的 Brasmax)进行了侵染,并在 14 天和 24 天两个时期进行了评估。随着时间的推移,T. ludeni 在受侵染植株中的分布变化提高了抗坏血酸过氧化物酶和过氧化氢酶的活性,特别是在 Monsoy 中,降低了过氧化氢和超氧化物的含量,从而防止了两种基因型顶端区域的脂质过氧化。在基部,叶绿素指数低,三叶叶片呈黄色,膜稳定性丧失程度高,过氧化氢和超氧化物积累,这些都是侵染后 24 天 Brasmax 三叶叶片衰老的特征。因此,T. ludeni 的侵染对大豆植株的氧化还原代谢产生了复杂而重要的影响,尤其是对 Brasmax 等周期较短的基因型。此外,平衡振荡可被视为一种很好的生化标记,用于选择对侵染不那么敏感和不那么易受侵染的更合适的基因型。
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来源期刊
Planta
Planta 生物-植物科学
CiteScore
7.20
自引率
2.30%
发文量
217
审稿时长
2.3 months
期刊介绍: Planta publishes timely and substantial articles on all aspects of plant biology. We welcome original research papers on any plant species. Areas of interest include biochemistry, bioenergy, biotechnology, cell biology, development, ecological and environmental physiology, growth, metabolism, morphogenesis, molecular biology, new methods, physiology, plant-microbe interactions, structural biology, and systems biology.
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