Is Erwinia urease positive?
The genus Erwinia has been defined as Gram-negative bacteria, facultative anaerobes, motile by peritrichous flagella, rod-shaped, acid produced from glucose, fructose, galactose and sucrose….Biochemical tests.
| Test | Result |
|---|---|
| Gelatine liquefaction | + |
| Urease | − |
| Indole | − |
| Reducing substances from sucrose | + |
What is Erwinia Uredovora?
Erwinia is a genus of Enterobacteriaceae bacteria containing mostly plant pathogenic species. It contains gram-negative bacteria related to Escherichia coli, Shigella, Salmonella and Yersinia. They are primarily rod-shaped bacteria. Many infect woody plants.
What is pantoea Ananatis?
Pantoea ananatis is a ubiquitous bacterium which, in itself, is not unique as a number of other bacterial plant pathogens share this characteristic. However, P. ananatis, when it is not associated with plants as an epiphyte, endophyte, pathogen or symbiont, also occupies diverse and unusual ecological niches.
What disease does Erwinia cause?
Erwinia carotovora is the main bacterial disease of cyclamen. The symptoms of its onset are a sudden rotting of the tuber, which gives off a fetidsmell, and a drooping of the leaves.
What does Erwinia do to a plant?
Erwinia carotovora subsp. carotovora or Pectobacterium carovora infects plants through fresh wounds, for example pruning wounds. It cannot infect healthy green leaves, but can grow in senescent leaves and from there grow through the petiole to the main stem through the xylem vessels.
How do you treat Erwinia?
There are no compounds that can rid infected plants of Erwinia; although, bactericides containing copper can help slow the spread of the pathogen. Antibiotics have been recommended, but the bacteria adapt and populations become resistant within a matter of weeks.
How do you stop Erwinia?
What causes Erwinia?
Erwinia disease is frequently the result of defects in management such as temperature variations, planting too deep in the pot, or too much nitrogenous fertiliser. There is currently no chemical means of combating the breakdown of tubers once this is under way. There are no antibiotics authorised for agricultural use.
Is coliform bacteria harmful?
Are Coliform Bacteria Harmful? Most coliform bacteria do not cause disease. However, some rare strains of E. coli, particularly the strain 0157:H7, can cause serious illness.
Will boiling water remove coliform bacteria?
Boiling water kills coliform bacteria, but does not remove nitrate. Do NOT boil water with both coliform and nitrate. It may increase the nitrate level, making the problem worse!
How do you treat Erwinia in plants?
What is Erwinia ananas?
Epiphytic bacterium, Erwinia ananas, commonly isolated from rice plants and brown planthoppers (Nilaparvata lugens) in hopperburn patches. Applied Entomology and Zoology, 31 (3):459-462; 9 ref Watanabe K, Sato M, 1999.
Does gut colonization of Erwinia (Pantoea) ananas reduce cold hardiness of mulberry pyralid larvae?
Gut colonization of an ice nucleation active bacterium, Erwinia (Pantoea) ananas reduces the cold hardiness of mulberry pyralid larvae. Cryobiology, 38:281-289 Watanabe M, Arai S, 1987.
Is Erwinia ananatis an invasive pathogen?
To classify P. ananatis as an invasive pathogen is difficult. It is a ubiquitous bacterium ( Coutinho et al., 2006) and a common epiphyte on plant tissue…. More… Don’t need the entire report? Generate a print friendly version containing only the sections you need. Erwinia ananatis corrig. Serrano 1928
Is Erwinia aphidicola a pathogen?
E. aphidicola appears to display characteristics of a pathogen as it had decimated fifty percent of a bean crop in Spain in late 2003. Erwinia rhapontici has been identified as a plant pathogen that produces a distinct diffusible pink pigment on sucrose-peptone agar and creates pink seeds in the hosts.