SHORT COMMUNICATION
Isolation and Identification of a Phyllospheric Yeast
Strain Capable of Utilizing BDE-3 as Sole Carbon
and Energy Source
| 1 | College of Forestry, Hebei Agricultural University, Baoding 071000, China |
| 2 | Hebei Provincial Key Laboratory of Tree Species Germplasm Resources and Forest Protection, Baoding 071000, China |
| 3 | State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing |
CORRESPONDING AUTHOR
Kejiu Du
Agricultural University of Hebei, College of Forestry, Agricultural University of He, 071000, Baoding, China
Agricultural University of Hebei, College of Forestry, Agricultural University of He, 071000, Baoding, China
Submission date: 2020-07-09
Final revision date: 2020-08-17
Acceptance date: 2020-08-18
Online publication date: 2020-11-26
KEYWORDS
TOPICS
ABSTRACT
As a class of synthetic organic compounds widely used in varieties of industrial products,
polybrominated diphenyl ethers (PBDEs) have attracted increasing attention for the properties of
toxicity, bioaccumulation and persistence. In this paper, the phyllospheric yeast strain capable of
aerobic degradation of 4-brominated diphenyl ether (BDE-3) was originally isolated from Populus
tomentosa. Based on the morphological properties and the ITS sequence analysis, the obtained yeast
was identified as Wickerhamomyces anomalus and designated Y1. The endurance ability of Y1 to BDE-
3 exposure was determined by BDE-3 concentration gradient experiment. BDE-3 removal efficiency
analysis was conducted by applying GC-μECD with initial BDE-3 content of 40 mg/L. Results showed
Y1 could remove 83.58±2.60% of 40 mg/L BDE-3 in 3-day aerobic incubation. The tolerance range of
pH and NaCl concentration were determined for further engineering application. It could be the first
report about PBDEs degradation by yeast strain, isolated from the phyllosphere of P. tomentosa at the
non-contaminated site of a subastral ecological niche, and might be advantageous in comprehensive
exploitation of phytoremediation.
