Murrayone: A Promising New Fungicide Destroying the Oxidative Homeostasis and Cell Membrane Integrity of Botrytis

Wanyun Zhu1,2, Yao Yu1,2, Xinru Li1,2,3

  • 1Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China.

Insights

Murrayone effectively combats the destructive plant pathogen Botrytis cinerea by damaging cell membranes and disrupting oxidative balance. This natural compound shows promise as a safe and sustainable antifungal agent for agriculture.

Area of Science:

  • Agricultural Science
  • Plant Pathology
  • Mycology

Background:

  • Botrytis cinerea causes significant global economic losses in agriculture.
  • Previous studies identified Murrayone as a potent natural antifungal agent against B. cinerea.

Purpose of the Study:

  • To investigate the mechanism of action of Murrayone against B. cinerea.
  • To evaluate the safety and efficacy of Murrayone as a sustainable antifungal strategy.

Main Methods:

  • Cellular morphology, sporulation, and spore germination assays were performed.
  • Transcriptome analysis was used to identify molecular pathways affected by Murrayone.
  • Reactive oxygen species (ROS) accumulation, propidium iodide (PI) staining, and mycelial dry weight were assessed.

Main Results:

  • Murrayone induced severe cellular damage, inhibited sporulation and germination, and reduced disease severity in blueberries.
  • Transcriptome analysis indicated disruption of oxidative homeostasis and cell membrane damage.
  • Murrayone demonstrated safety in seed germination assays.

Conclusions:

  • Murrayone exhibits multitarget and multipathway antifungal effects against B. cinerea.
  • The findings provide a theoretical basis for developing Murrayone as a sustainable agricultural antifungal agent.

Related Concept Videos

Production of Biopesticides01:18

Production of Biopesticides

Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...
Antifungal Agents01:15

Antifungal 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...
Microbe-Plant Interactions01:09

Microbe-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...
Biological Methods for Microbial Control01:28

Biological Methods for Microbial Control

Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
Fungal Group Zygomycota01:29

Fungal 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...
Microbial Bioremediation of Pesticides01:28

Microbial Bioremediation of Pesticides

Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...