downy mildew

Examples of downy mildew in the following topics:

• Protists as Plant Pathogens

  • The oomycete Plasmopara viticola parasitizes grape plants, which causes a disease called downy mildew .
  • The spread of downy mildew nearly collapsed the French wine industry in the nineteenth century.
  • Therefore, planting early season varieties may further reduce the threat posed by downy mildew.
  • Fungicides can also be applied to control downy mildew.
  • Both downy and powdery mildews on this grape leaf are caused by an infection of P. viticola.

• Fungi as Plant, Animal, and Human Pathogens

  • Smuts, rusts, and powdery or downy mildew are other examples of common fungal pathogens that affect crops.
  • Some fungal pathogens include (a) green mold on grapefruit, (b) powdery mildew on a zinnia, (c) stem rust on a sheaf of barley, and (d) grey rot on grapes.

• Auxins, Cytokinins, and Gibberellins

  • Maturing grapes are routinely treated with GA to promote larger fruit size, as well as looser bunches (longer stems), which reduces the incidence of mildew infection .

• Eating Disorders

  • Physical symptoms include hair loss; development of downy hair growth on the face, neck, and extremities; salivary gland enlargement; indigestion; and constipation, among others.

• Characteristics of Birds

  • Certain parts of a bird's body are covered in down feathers; the base of other feathers have a downy portion, while newly-hatched birds are covered in down.

• Suggestions for improving the efficiency of building interiors

  • Proper duct sealing also keeps dust, mould and mildew at bay.

• Eating Disorders

  • Physical symptoms include hair loss; development of downy hair growth on the face, neck, and extremities; salivary gland enlargement; indigestion; and constipation, among others.