Agave spp. is main resource of hard fiber. Zebra disease, caused by the pathogen Phytophthora nicotianae, is one of the most devastating sisal oomycete diseases. RXLR effector proteins are important cytoplasmic effectors of oomycete and more than 300 RXLR effector genes were identified in the genomes of P. nicotianae. RXLR effectors have the ability to manipulate or suppress host immunity by directly binding host proteins. A typical RXLR effector (named PnRXLR5863) that induced programmed cell death (PCD) was identified from P. nicotianae, but the targets in Agave were still unknown. This study aims to obtain the host plant proteins that are interacting with PnRXLR5863 in A. hybrid No.11648. A normalized cDNA library was constructed by combining Switching Mechanism at 5′ end of RNA Transcript (SMART) and Duplex-Specific Nuclease (DSN) technology. The capacity of cDNA library was 5.32×107 CFU/ml, the independent clones was 1.064×108 CFU, and the lengths of inserts ranged from 0.5 kb to 3.0 kb, with the recombination rate of 100%. A total of 23 proteins interacting with PnRXLR5863 were obtained by sequencing and homology analysis. Some of target proteins involve several physiological events, such as ubiquitination, protein synthesis, protein translation and protein translation, suggesting that PnRXLR5863 effector may act on protein metabolism of Agave spp. This research would lay a foundation for further study of the pathogenic mechanism of PnRXLR5863.
| 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 |