Related Experiment Video

Updated: Oct 3, 2026

Microscopy of Fission Yeast Sexual Lifecycle
07:47

Microscopy of Fission Yeast Sexual Lifecycle

Published on: March 9, 2016

Chemotaxis of fungal zoospores, with special reference to Aphanomyces cochlioides

M T Islam1, S Tahara

  • 1Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.

Bioscience, Biotechnology, and Biochemistry
|October 26, 2001
PubMed

Insights

Phytopathogenic fungal zoospores are attracted to host plants by chemical signals, which also prepare them for infection. Non-host plants may use secondary metabolites to deter these fungal pests.

Area of Science:

  • Plant pathology
  • Mycology
  • Biochemistry

Background:

  • Phytopathogenic fungi zoospores use chemotaxis to locate host roots for infection.
  • Host-specific attractants guide zoospore behavior and induce physiological changes.
  • Non-host plant compounds can influence zoospore viability and behavior.

Purpose of the Study:

  • To review signaling and communication between fungal zoospores and host/non-host plants.
  • To discuss the role of plant secondary metabolites in plant defense against zoosporic fungi.
  • To explore potential signal transduction mechanisms in fungal zoospores.

Main Methods:

  • Literature review of host-pathogen interactions.
  • Analysis of chemical signaling in zoospore behavior.
  • Discussion of proposed signal transduction pathways.

Main Results:

  • Host plants release specific attractants that guide zoospore aggregation and preparation for infection.
  • Non-host plants produce compounds that can inhibit zoospore activity.
  • G-protein-coupled receptors and phosphoinositide-Ca2+ signaling are hypothesized pathways for zoospore perception.

Conclusions:

  • Plant-derived signals are crucial for host recognition and infection initiation by fungal zoospores.
  • Non-host plant metabolites offer potential for developing new strategies against fungal diseases.
  • Further research is needed to elucidate the detailed signal transduction mechanisms in zoospores.

More Related Videos

Infection of Zebrafish Larvae with Aspergillus Spores for Analysis of Host-Pathogen Interactions09:42

Infection of Zebrafish Larvae with Aspergillus Spores for Analysis of Host-Pathogen Interactions

Published on: May 16, 2020

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

Related Concept Videos

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...
Fungal Phylum Microsporidia01:28

Fungal Phylum Microsporidia

Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
Chemotaxis and Direction of Cell Migration01:21

Chemotaxis and Direction of Cell Migration

Cells can detect chemical cues in their environment and reorganize the cytoskeleton to migrate toward them or away from them. This directional migration, called chemotaxis, is essential during embryogenesis and development, immune response, tissue repair and regeneration, and reproduction. These chemical cues can either attract or repel the cell's movement. For example, axon development is determined by a combination of chemoattractants and chemorepellents that direct the growing axon towards...
Chemotaxis in E. coli01:27

Chemotaxis in E. coli

Chemotaxis in Escherichia coli is a sensory-driven motility mechanism that enables bacteria to navigate chemical gradients, moving toward beneficial environments while avoiding harmful conditions. This process relies on a signal transduction system integrating external chemical cues with flagellar motor control.Chemoreceptors and Signal DetectionE. coli detects chemical gradients through methyl-accepting chemotaxis proteins (MCPs), which are membrane-bound chemoreceptors that sense attractants...
Fungal Phylum Ascomycota01:28

Fungal Phylum Ascomycota

Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...
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...