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To clarify the detoxification metabolism and environmental adaptation mechanisms of Puccinia striiformis f. sp. tritici (Pst) physiological race CYR34, members of the glutathione S-transferase (GST) gene family were identified based on the their nucleotide sequence and GFF3 annotation files of CYR34. Bioinformatics analyses were conducted on the physicochemical properties of the encoded proteins, chromosomal localization, phylogenetic relationships, and cis-acting elements in the promoter regions. In addition, the temporal expression patterns of GST family genes during urediniospore germination and host infection were analyzed by quantitative real-time PCR. The results showed that six GST genes (GST1-GST6) were identified in CYR34. The encoded proteins ranged from 187 to 207 amino acids in length, all containing conserved GST domains and being distributed on three chromosomes. A total of 26 types of cis-acting elements were detected in the promoter regions. During urediniospore germination, GST1, GST3, GST4, GST5, and GST6 all reached relatively high expression levels at 24 hours post inoculation (hpi), among which GST5 showed the greatest up-regulation, reaching 9.04-fold that of the control group. During wheat infection by CYR34, GST4 and GST6 generally exhibited an upward expression trend, with GST4 reaching its highest expression level at 48 hpi, 3.14-fold that of the control group. These results indicate that the GST genes in CYR34 may participate in the regulation of environmental adaptation and detoxification metabolism during urediniospore germination and infection.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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