What are the two strains of Aphanomyces?

6.10. striata. The list of the fungi are as follows: (a) Aphanomyces strains isolated from EUS-affected fishes in Asia and Australia; (b) saprophytic Aphanomyces, Achlya, and Saprolegnia spp.

Is Aphanomyces a fungus?

The genus Aphanomyces belongs to the family Saprolegniaceae and class Oomycetes. Today, Oomycetes are not always considered to be true fungi, but fungi-like protists.

What is a major symptom of Aphanomyces?

Aphanomyces infection is characterized by (1) yellowing and wilting of shoots, (2) pinching of epicotyl, stopping abruptly at soil line, (3) lateral roots with watery and honey-brown decay.

What is epizootic ulcerative syndrome?

Epizootic ulcerative syndrome or EUS is an infection caused by an oomycete fungi known as Aphanomyces invadans or A. piscicida. Aphanomyces is a member of a group of organisms formerly commonly known as water moulds; they are currently recognized as belonging to the group of heterokonts or stramenopiles (OIE, 2006).

What is the causal agent for dry root of legumes and beans?

fungus Fusarium solani f. phaseoli
Dry root rot caused by the fungus Fusarium solani f. phaseoli directly affects only the roots of the plants; however, the parts above ground are stunted and may turn yellow, wilt, and die before the plants mature.

What causes epizootic ulcerative syndrome?

How is epizootic ulcerative syndrome treated?

There is no effective treatment for EUS-infected fish in the wild and in aquaculture ponds. To minimise fish losses in infected fish ponds water exchange should be stopped and lime or hydrated lime and/or salt should be applied (16).

What causes wilting in beans?

Lack of water is the most common reason for bean leaves to wilt. Water is an essential component in a plant’s ability to make its own food. Without water, the green bean plant becomes stressed and weakened.

How do you prevent root rot in beans?

The best prevention strategy is to plant beans after soils have warmed up (55ºF) at a depth of 1/2 inch in a coarse, well-drained soil that has been optimally fertilized. A well-prepared seedbed promotes rapid seedling growth and minimizes root rot.

What is epizootic disease?

Epizootic disease is a disease event in an animal population akin to an epidemic in humans. It generally refers to outbreaks of disease which cause serious economic or public health issues and are of major importance in the international trade of animals and animal products.

What are the symptoms of bacterial wilt?

The following symptoms can indicate bacterial wilt on the plant: wilting (figure 1) yellowing. some stunting of the plants….Spread of disease

  • irrigation water and flood waters.
  • contaminated soil.
  • nematodes.
  • infected equipment (seed-cutters, or second-hand bags or half-tonne bins)
  • seed dissemination.

What are the signs and symptoms of bacterial wilt?

How to tell bacterial wilt apart from other cucurbit issues

  • Leaves first appear dull green, wilt during the day and recover at night.
  • Leaves eventually yellow and brown at the margins, completely wither and die.
  • The speed of wilting varies by crop.
  • Wilt progresses down the vine until the entire vine wilts or dies.