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2025年8月18日 星期一
农业生物技术学报  2024, Vol. 32 Issue (2): 427-443    DOI: 10.3969/j.issn.1674-7968.2024.02.015
  研究论文与报告 本期目录 | 过刊浏览 | 高级检索 |
土地类芽胞杆菌NK3-4对藤仓镰孢菌基因表达的影响
刘文志1, 吴昕雨1, 杜佳朋1, 彭志红1, 龚沙沙1, 于文清1,2,*, 李鹏2,*
1 上饶师范学院 生命科学学院,上饶 334001;
2 黑龙江省农垦科学院 农畜产品综合利用研究所,哈尔滨 150038
Effects of Paenibacillus terrae NK3-4 on Gene Expression in Fusarium fujikuroi
LIU Wen-Zhi1, WU Xin-Yu1, DU Jia-Peng1, PENG Zhi-Hong1, GONG Sha-Sha1, YU Wen-Qing1,2,*, LI Peng2,*
1 College of Life Science, Shangrao Normal University, Shangrao 334001, China;
2 Institute of Comprehensive Utilization of Agricultural and Livestock Products, Heilongjiang Academy of Agricultural Reclamation Sciences, Haerbin 150038, China
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摘要 土地类芽胞杆菌(Paenibacillus terrae) NK3-4对植物病原菌具有拮抗活性,但其与病原菌互作过程中,病原菌的响应机制仍不清晰。本研究测定了NK3-4对水稻(Oryza sativa)恶苗病菌藤仓镰孢菌(Fusarium fujikuroi)的抑菌效果,并对受其抑制的藤仓镰孢菌实施了转录组测序分析。结果表明,NK3-4抑制了藤仓镰孢菌的生长、色素及分生孢子生成,并损坏了菌丝。在NK3-4诱导藤仓镰孢菌差异表达的2 291条基因中,下调表达基因数目是上调表达的2.44倍,下调表达的基因主要富集于细胞核(GO:0005634)、含蛋白复合体(GO:0032991)、细胞内非膜结合细胞器(GO:0043232)等功能群中。差异表达的基因中,与致病性(GO:0009405)、毒素生物合成进程(GO:0009403)、黄曲霉毒素生物合成过程(GO:0045122)、繁殖(GO:0000003)等功能相关的基因下调表达数目均多于上调表达数目;差异表达的基因中,与细胞壁几丁质生物合成过程(GO:00060382)、无性繁殖(GO:0019954)、分生孢子形成(GO:0048315)、分生孢子发育(GO:0061794)、色素生物合成进程(GO:0046148)等功能相关的基因均下调表达。反转录荧光定量PCR结果与转录组测序结果一致(皮尔森相关性系数0.90)。综合分析表明,NK3-4可通过下调生长发育相关基因及色素和孢子生成相关基因表达来抑制藤仓镰孢菌,还可通过抑制藤仓镰孢菌毒素生物合成降低其毒力。研究结果为进一步阐述NK3-4与藤仓镰孢菌进行分子互作的机理提供了依据。
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刘文志
吴昕雨
杜佳朋
彭志红
龚沙沙
于文清
李鹏
关键词 土地类芽胞杆菌藤仓镰孢菌转录组抗菌机制    
AbstractPaenibacillus terrae NK3-4 strain is found to be antagonistic to plant pathogens. However, the response mechanism of NK3-4 interaction with the pathogen remains unclear. In this study, the inhibitory effect of NK3-4 on rice (Oryza sativa) bakanae disease pathogenic Fusarium fujikuroi was measured, and a transcriptome sequencing analysis for the NK3-4 inhibited F. fujikuroi was taken. The results showed that NK3-4 inhibited the growth, pigment synthesis and conidia formation of F. fujikuroi, and damaged the mycelia. Among the 2 291 differential expressed genes in F. fujikuri induced by NK3-4, the number of down-regulated genes was 2.44 times of up-regulated genes. And the down-regulated genes were mainly enriched in nucleus (GO:0005634), protein-containing complex (GO:0032991), intracellular non-membrane-bound organelles (GO:0043232) and other functional groups. Among the differential expressed genes, the number of down-regulated expressed genes related to pathogenesis (GO:0009405), toxin biosynthetic process (GO:0009403), aflatoxin biosynthetic process (GO:0045122), reproduction (GO:0000003 ) and other relative functions were more than that of the up-regulated genes. Meanwhile, of the differential expressed genes which involved in cell wall chitin biosynthetic process (GO:00060382), asexual reproduction (GO:0019954), conidia formation (GO:0048315), conidia development (GO:0061794), pigment biosynthetic process (GO:0046148) and other relative functions were all down-regulated expressed. The result of reverse transcription fluorescence quantitative PCR detection was consistent with transcriptome sequencing result (Pearson correlation index 0.90), indicating NK3-4 down-regulated the expression levels of genes in F. fujikuroi. Synthetic analysis showed that NK3-4 may inhibit F. fujikuroi by down-regulating the expression of genes, which related to growth and reproduction, pigment synthesis and spore production, and may reduce its virulence by inhibiting the biosynthesis of toxin in F. fujikuroi. The results provide a basis for further elucidating the molecular mechanism of NK3-4 interacting with F. fujikuroi.
Key wordsPaenibacillus terrae    Fusarium fujikuroi    Transcriptome    Antimicrobial mechanism
收稿日期: 2023-02-10     
ZTFLH:  S476  
基金资助:国家自然科学基金(32060633); 黑龙江省自然科学基金(LH2022C091)
通讯作者: *wenqingyu09@163.com;nkkxylp@163.com   
引用本文:   
刘文志, 吴昕雨, 杜佳朋, 彭志红, 龚沙沙, 于文清, 李鹏. 土地类芽胞杆菌NK3-4对藤仓镰孢菌基因表达的影响[J]. 农业生物技术学报, 2024, 32(2): 427-443.
LIU Wen-Zhi, WU Xin-Yu, DU Jia-Peng, PENG Zhi-Hong, GONG Sha-Sha, YU Wen-Qing, LI Peng. Effects of Paenibacillus terrae NK3-4 on Gene Expression in Fusarium fujikuroi. 农业生物技术学报, 2024, 32(2): 427-443.
链接本文:  
https://journal05.magtech.org.cn/Jwk_ny/CN/10.3969/j.issn.1674-7968.2024.02.015     或     https://journal05.magtech.org.cn/Jwk_ny/CN/Y2024/V32/I2/427
 
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