Determination of population dynamics of the antagonists in fruit
wounds
Tomato fruit were immersed in a circulating water bath at 42C
for 40 min, and forced-air cooled immediately to 20C. Fruit without HWT served as control. Then, fruit were treated with aliquots
(5lL) of washed cell suspension ofC. guilliermondiiorP. membranaefaciensat 510
7
cell mL
1
. Samples were prepared at different
time points after treatment according to the previous study (Fan
and Tian, 2001). The yeasts were recovered by removing 10 wound
tissues with a cork borer (1 cm diameter1 cm deep), ground
with a mortar and pestle in 10 mL sterile distilled water. Then
50lL of serial 10-fold dilutions were spread on NYDA plates. Samples taken at 1 h after treatment for population measurement
served as time 0. Fruits stored at 20C were assessed every 1 day
for 5 days. Colonies were counted after incubation at 20C for
5 days and expressed as the Log10 CFU per wound. There were
three replicates in each treatment, and the experiment was repeated twice