Kennedy & Erwin EDTA medium

From Bugwoodwiki


Purpose

Used to induce sporangial formation of Phytophthora.

Ingredients

Macrosalts (Actual Concentration)

Ingredient
KH2PO4 0.001 M
KNO3 0.005 M
Ca(NO3)2 • 4H2O 0.005 M
MgSO4•7H2O 0.002 M

Microsalts Stock -- 1ml/L

Ingredient
H3BO4 2.86 g
MnCl2•H2O 1.81 g
ZnSO4•7H2O 0.22 g

Chelated iron stock--1ml/L

Ingredient
dH2O to make 1 liter
ethylenediamine tetra-acetic acid (EDTA) 26.1 g
KOH 15 g
FeSO4•7H2O 24.9 g
CuSO4•5H2O 0.08 g
(NH4)6MO7O24•4H2O 0.2 g


Instructions

  1. Grow culture on V-8 juice agar.
  2. Transfer mycelial disks to this medium for 24 hours, then check for sporulation.


Notes

References

  • Kennedy, B. W. and D. C. Erwin. Some factors influencing sporangium formation of a Phytophthora species isolated from lucerne in certain salt solutions. 1961. Trans. Brit. Mycol. Soc. 44: 291-297

Contributed by

From the Virginia Polytechnic Institute and State University Mediabook; Originally created by Robert Wick; contributed by Mary Ann Hansen