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Related Concept Videos

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...
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Viruses are unique biological entities that blur the boundary between living and non-living systems. Although they lack cellular structure and metabolic processes, they can exhibit characteristics of life when infecting a host. Their defining feature is a nucleic acid core, composed of either DNA or RNA, encapsulated within a protein coat called a capsid. This simple structure allows them to invade host cells and use their machinery for replication efficiently.Viral Structure and...
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Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
Defenses Against Pathogens and Herbivores02:26

Defenses Against Pathogens and Herbivores

Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.

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A Hydroponic Co-cultivation System for Simultaneous and Systematic Analysis of Plant/Microbe Molecular Interactions and Signaling
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How do plant viruses induce disease? Interactions and interference with host components.

Vicente Pallas1, Juan Antonio García2

  • 1Instituto de Biología Molecular y Celular de las Plantas, CSIC-Universidad Politécnica de Valencia, Avenida de los Naranjos s/n, 46022 Valencia, Spain.

The Journal of General Virology
|September 9, 2011
PubMed
Summary

Plant viruses disrupt host cells for replication, causing disease by competing for resources and affecting numerous genes. Antiviral defenses and plant development pathways interact, influencing disease severity and pathological outcomes.

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Area of Science:

  • Plant Pathology
  • Molecular Plant-Microbe Interactions
  • Virology

Background:

  • Plant viruses are biotrophic pathogens requiring living host cells for replication.
  • Virus infections can range from asymptomatic to severe disease, impacting host physiology.
  • Disease symptoms arise from resource competition and interference with host cellular processes.

Purpose of the Study:

  • To review recent advances in understanding how plant viruses impact cellular processes.
  • To explore the role of plant antiviral defenses in disease development.
  • To elucidate the interplay between plant development and antiviral responses in pathogenesis.

Main Methods:

  • Literature review of current research on plant-virus interactions.
  • Analysis of molecular mechanisms underlying virus-induced disease.
  • Examination of signaling pathway crosstalk between plant development and defense.

Main Results:

  • Plant viruses interfere with host genes involved in hormonal regulation, cell cycle control, and macromolecule transport.
  • The number of affected host genes correlates with disease symptom severity.
  • Interactions between plant development pathways and antiviral defense mechanisms can trigger pathological phenotypes.

Conclusions:

  • Plant viruses manipulate host cellular processes, leading to disease phenotypes.
  • Plant antiviral defense mechanisms are integral to the development of pathological symptoms.
  • Understanding these interactions is crucial for managing plant viral diseases.