关键词: OsSAPK2; 水稻; 白叶枯病; RNA干扰 Stress-activated Protein Kinase OsSAPK2 Involved in Regulating Resistant Response to Xanthomonas oryzae pv. oryzaein Rice HU Dan-Dan1,2, ZHANG Fan2, HUANG Li-Yu2, ZHUO Da-Long1,2, ZHANG Fan2, ZHOU Yong-Li2,*, SHI Ying-Yao2,*, LI Zhi-Kang2 1College of Agronomy, Anhui Agricultural University, Hefei 230036, China
2Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
AbstractSucrose nonfermenting1-related protein kinase2 (SnRK2), also known as stress-activated protein kinase ( OsSAPKs), plays an important role in signal transduction. In this study, we analyzed the structure and function of OsSAPK2 in response to Xanthomonas oryzaepv. oryzae ( Xoo) infection. The result suggested that OsSAPK2 is a member of Kulik’s II group like OsSAPK1, OsSAPK3 and located in nucleus and cytoplasm. OsSAPK2and disease-resistant genes OsLRR1, OsHIR1 were down regulated in OsSAPK2-RNAi transgenic rice, while disease-related gene OsMAPK5 was up regulated. Compared with non-transgenic plants, transgenic plants were more susceptible to Xoo infection. OsSAPK2 could activate itself and interact with several stress-related proteins. These results indicate that OsSAPK2 might be involved in the regulation of resistance response by regulating the expression of OsLRR1, OsHIR1, OsMAPK5 and interacting with stress-related proteins.
图6OsSAPK2-RNAi转基因植株接种水稻白叶枯病菌KS6-6 (C2)后抗病相关基因MAPK5、OsLRR、OsHIR1的表达分析Fig. 6 Expression of resistance-related gene MAPK5, OsLRR, and OsHIR1 of the OsSAPK2-RNAi transgene rice after inoculating with Xanthomonas oryzae pv. oryzae(Xoo) C2
表3 Table 3 表3(Table 3)
表3 酵母双杂交筛选到与OsSAPK2互作的候选蛋白 Table 3 Candidate interaction proteins of OsSAPK2 screened by Y2H
酵母单克隆 Yeast clone
基因号 Gene ID
注释 Annotation
D1
LOC_Os02g54160
OsEREBP1
D3
LOC_Os10g35840
Glutamyl-tRNA reductase
D7
LOC_Os07g32400
Putative MAP4 kinase
D9
LOC_Os07g05820
GLO5
D11
LOC_Os09g07570
Catalytic subunit of the ferredoxin-thioredoxin reductase (FTR)
D15
LOC_Os06g09370
BHLH transcription factor PTF1
表3 酵母双杂交筛选到与OsSAPK2互作的候选蛋白 Table 3 Candidate interaction proteins of OsSAPK2 screened by Y2H
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