抗真菌三醇会影响Solanum lycopersicum L.植物中关键的非目标代谢途径
Veronika Hýsková1, Michal Jakl2, Jana Jaklová Dytrtová3
1Charles University, Faculty of Science, Department of Biochemistry, Prague 2, Czech Republic.
Ecotoxicology and environmental safety
|November 24, 2023
概括
三醇杀菌剂通过改变氨基酸水平和抗氧化剂系统来影响番茄植物. 番茄植物随着时间的推移适应了这些杀菌剂,这表明了增强抗压能力的潜力.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 生态毒理学 生态毒理学
背景情况:
- 1,2,4-三醇是系统性杀菌剂,可以抑制真菌14α-脱甲基酶.
- 三醇可以影响非目标植物酶,影响植物激素平衡,氨基酸和应激适应.
- 了解这些影响对于可持续的农业实践至关重要.
研究的目的:
- 调查可纳和特布可纳对番茄植物 (Solanum lycopersicum L. var. 的生态毒理学影响. "Cherrola") 的使用.
- 分析三醇杀菌剂对自由氨基酸含量,抗氧化系统和植物激素平衡的影响.
- 评估三醇暴露后的植物适应和潜在的抗压机制.
主要方法:
- 番茄植物每周接受可纳,特布可纳或通过叶子喷雾或土壤浸泡的组合的治疗.
- 总自由氨基酸的量化,包括谷氨胺,阿斯巴拉金和氨酸 (Trp).
- 对抗氧化系统成分的评估:酶活性,抗氧化能力和叶子中的含量.
主要成果:
- 三醇暴露显著增加了总自由氨基酸含量 (1.7-8.8×),特别是谷氨酸和氨酸.
- 托芬 (Trp) 含量下降 (0.2-0.7×),这表明奥克辛生物合成耗尽.
- 抗氧化系统只受到轻微的影响,植物随着时间的推移显示了适应的迹象.
结论:
- 三醇杀菌剂改变了氨基酸特征,对番茄植物的抗氧化系统的影响很小.
- 番茄植物表现出适应性反应慢性三醇暴露.
- 和酸含量增加可能会增强暴露于三醇的植物对非生物应激的抵抗力.
相关概念视频
01:29Fungal Group Zygomycota
Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
01:26Fungal Phylum Basidiomycota
Basidiomycota is a diverse phylum of fungi that includes ecologically significant decomposers such as white rot fungi, symbionts like mycorrhizal fungi, plant pathogens such as rusts and smuts, and edible species like Agaricus bisporus (the common button mushroom). These fungi play crucial roles in nutrient cycling, symbiotic relationships, and even human health. Their defining feature is the basidium, a microscopic club-shaped structure responsible for producing basidiospores.Fruiting Bodies...
01:09Microbe-Plant Interactions
Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...
01:15Antifungal Agents
Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
01:15Anthelminthic Agents
Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...
01:21Antiprotozoal Agents
Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...