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SWEET (sugars will eventually be exported transporter) plays an important role in pant flowering. However, the mechanism of flower was unclear in pineapple. In this study, the interacting proteins of AcSWEET11 were identified, in order to lay a foundation for analysis of the flowering mechanism of pineapple. In this study, the interacting proteins of AcSWEET11 were screened from the pineapple flowering cDNA membrane library by co-transformed, and then the expression levels of the candidate proteins during flowering were analyzed. pBT3-STE-AcSWEET11+pPR3-N was nontoxicity for NMY51 yeast cells but had autonomous activation. Further study showed that autonomous activation was restrained after adding 3ʹAT in TDO and QDO. A total of 81 positive clones were screened by yeast two-hybrid, and 48 proteins were identified by sequencing which were probably interactive with AcSWEET11. The proteins were contained E3 ubiquitin-protein ligase RING1-like, Trehalose-phosphate synthase 7, Cytochrome P450 90A1-like and Transcription factor LUX. GO and KEGG revealed that 48 proteins may participate in lipid metabolism, amino acid metabolism, carbohydrate metabolism, signal transduction and transport and catabolism. And the expression of Trehalose-phosphate synthase 7 (XP_020105459.1), Protein TIFY 3-like (XP_020082835.1), 40S ribosomal protein S27 (XP_020092770.1) and Heterogeneous nuclear ribonucleoprotein 1-like (XP_020112516.1) were down regulated during flowering induction that consistent with AcSWEET1 while the expression of Dihydrolipoyl dehydrogenase 2 (XP_020113798.1), Putative lipid-transfer protein DIR1 (XP_020086640.1), Clathrin assembly protein At4g32285 (XP_020108161.1) were up regulated. AcSWEET11 might interact with the proteins such as Trehalose-phosphate synthase 7 to participate in pineapple flowering. The protein interaction network of AcSWEET11 was plentiful to provide a foundation for analysis the regulatory mechanism of AcSWEET11 in pineapple flowering.
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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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