A potential pathogenic bacterium named XAAS-XY2 was isolated from the decay tissue of postharvest Kuqa apricot. The strain was identified as Glucobacter sp. by 16S rDNA sequence analysis and physiological and biochemical characteristics. The inoculation method was used to determine the relationship between strain XAAS-XY2 and the decay of postharvest Kuqa apricot. Results showed that strain XAAS-XY2 exhibited the ability to cause decay in different maturity stages, and the symptoms were the same as the natural group. Particularly, the decay rate of the inoculation treatments in the fully ripe apricot reached 100% after 4 day. It appeared 2 days earlier than the natural group. Then, microorganisms in the decay tissue of the inoculation treatments were isolated and identified. Results demonstrated that strain XAAS-XY2 was the dominant bacterium and was the main pathogenic bacterium lead to the decay in Kuqa apricot. In addition, strain XAAS-XY2 was susceptible to several antibiotics included kanamycin, tetracycline, tobramycin, amikacin, streptomycin, rifampicin, gentamicin, norfloxacin. It provides a scientific basis for storage, disease prevention and control as well as further clarifying the mechanism for the decay of postharvest Kuqa apricot.
LIU Xiaojing
,
CHU Min
,
ZHU Jing
,
TANG Qiyong
,
SONG Suqin
,
SUN Jian
,
ZHU Xuan
,
ZHANG Zhidong
. Isolation, identification and verification of a decay pathogenic bacterium in Kuqa apricot[J]. Food and Fermentation Industries, 2020
, 46(18)
: 105
-110
.
DOI: 10.13995/j.cnki.11-1802/ts.023262
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