-
草地贪夜蛾(Spodoptera frugiperda)又称秋黏虫(Fall armyworm,FAW),起源于美洲热带和亚热带地区[1],具有迁飞能力强、生活周期短和寄主范围广等特点,2017年被国际农业及生物科学中心(CABI)评为世界十大植物害虫之一[2].该虫于2019年1月开始入侵我国云南省,并迅速向北迁飞,对我国的主要农作物造成了极大的威胁[2-5].
昆虫肠道为微生物的定植提供了独特的环境,而肠道菌群也在与宿主的长期协同进化过程中形成了稳定的相互作用关系,对宿主的营养、发育、生殖以及行为产生了重要的影响[6-9]. Wu等人[10]研究发现草翅叶蝉(Homalodisca coagulata)中有两种专性共生菌Baumannia cicadellinicola和Sulcia muelleri,前者可以合成维生素和辅酶因子,后者可以合成大部分宿主所必需的氨基酸,以满足宿主生长发育的需要. Shen等人[11]发现烟草甲(Lasioderma serricorne)体内的酵母类共生体(Symbiotaphrina kochii)能够利用植物化感物质和真菌毒素等作为碳源,从而起到解毒的作用,例如,该类微生物能够水解有机磷杀虫剂对硫磷.目前已有大量研究证实昆虫的肠道菌群有助于昆虫的营养代谢、生长发育和环境适应,参与昆虫的免疫防御系统,抵御寄生虫、病原体的入侵,影响昆虫的寿命,甚至介导种内和种间的通讯[6-9, 12-13].因此,开展昆虫肠道菌群在信息素生成、农药降解和抵抗微生物入侵等方面的作用研究,对害虫生物防治以及新农药的开发上具有重大的意义[14-15].
本课题组在前期实验中分离鉴定了重庆地区采食玉米和高粱的草地贪夜蛾肠道微生物[16-19],从采食玉米的幼虫肠道共分离出8个属的细菌,在采食高粱的草地贪夜蛾肠道中仅分离到了5个属的细菌,可能与首次采集的害虫样本数量较少有关.因此,为进一步比较分析采食不同食物的草地贪夜蛾之间的肠道细菌,课题组再次采集了重庆江津地区高粱地的草地贪夜蛾幼虫50余头,通过传统培养方法分离其肠道细菌,并通过16S rDNA测序对分离株进行鉴定,新分离得到6个属的细菌,并对重庆地区采食高粱叶和玉米叶的草地贪夜蛾以及玉米黏虫肠道优势细菌进行了比较分析.
Identification of New Isolates of Gut Bacteria of Spodoptera frugiperda Feeding on Sorghum in Chongqing Area
-
摘要: 为充分认识入侵重庆地区草地贪夜蛾(Spodoptera frugiperda)的肠道微生物,2019年7月该课题组再次在重庆江津地区高粱地采集了草地贪夜蛾幼虫,通过分离培养结合16S rDNA测序鉴定,从江津草地贪夜蛾幼虫肠道中共分离得到38个细菌分离株,归为9个属,分别为克雷伯氏菌属(Klebsiella)、肠球菌属(Enterococcus)、微球菌属(Micrococcus)、葡萄球菌属(Staphylococcus)、芽孢杆菌属(Bacillus)、不动杆菌属(Acinetobacter)、寡养单胞菌属(Stenotrophomonas)、假单胞菌属(Pseudomonas)和鞘脂杆菌属(Sphingobacterium).在课题组前期研究的基础上,新分离到了6个属,分别为克雷伯氏菌属(Klebsiella)、微球菌属(Micrococcus)、葡萄球菌属(Staphylococcus)、芽孢杆菌属(Bacillus)、寡养单胞菌属(Stenotrophomonas)和鞘脂杆菌属(Sphingobacterium).同时还对入侵重庆地区采食高粱和玉米的草地贪夜蛾幼虫肠道细菌分离株进行了比较分析,只在采食高粱的草地贪夜蛾幼虫肠道中发现了欧文氏菌属(Erwinia)、微球菌属(Micrococcus)、葡萄球菌属(Staphylococcus)、芽孢杆菌属(Bacillus)和寡养单胞菌属(Stenotrophomonas)的菌株,而气单胞菌属(Aeromonas)、短波单胞菌属(Brevundimonas)、金黄杆菌属(Chryseobacterium)和类香味菌属(Myroides)则只在采食玉米的草地贪夜蛾幼虫肠道中分离得到.通过对同一片江津高粱地的草地贪夜蛾和玉米黏虫(Mythimna separata)的肠道细菌分离株进行比较分析,只在草地贪夜蛾肠道中发现了微球菌属(Micrococcus)、欧文氏菌属(Erwinia)、假单胞菌属(Pseudomonas)、葡萄球菌属(Staphylococcus)和鞘脂杆菌属(Sphingobacterium),而金黄杆菌属(Chryseobacterium)只发现于玉米黏虫肠道中.Abstract: In order to fully understand the intestinal microbes of Spodoptera frugiperda which migrated to Chongqing, our team recently collected again the S. frugiperda larvae feeding on sorghum in July of 2019. Through isolation, culture and 16S rDNA sequencing, we obtained 38 isolates of bacteria from the gut of S. frugiperda in sorghum fields in Jiangjin, which belonged to 9 genera, including Klebsiella, Enterococcus, Micrococcus, Staphylococcus, Bacillus, Acinetobacter, Stenotrophomonas, Pseudomonas and Sphingobacterium. Compared with our previous research, 6 unreported genera were identified, including Klebsiella, Micrococcus, Staphylococcus, Bacillus, Stenotrophomonas and Sphingobacterium. At the same time, we also conducted a comparative analysis of the intestinal bacteria isolates of S. frugiperda feeding on sorghum and on corn. Strains of Erwinia, Micrococcus, Staphylococcus, Bacillus and Stenotrophomonas were found only in the gut of S. frugiperda feeding on sorghum, and Aeromonas, Brevundimonas, Chryseobacterium and Myroides were isolated only from the S. frugiperda feeding on corn. A comparison of the larvae intestinal bacterial isolates of S. frugiperda and Mythimna separata in the same sorghum field in Jiangjin showed that Micrococcus, Erwinia, Pseudomonas, Staphylococcus and Sphingobacterium were found only in the gut of S. frugiperda, while Chryseobacterium was found only in the gut of M. separata.
-
Key words:
- Chongqing area /
- fall armyworm(FAW, Spodoptera frugiperda) /
- intestinal bacteria /
- sorghum /
- corn .
-
表 1 江津草地贪夜蛾幼虫肠道细菌分离株种属统计
OTU ID 采样时间 NCBI ID RDP ID 7月17日 6月30日 OTU 1 JJSF2-11,JJSF2-13 NA Acinetobacter Acinetobacter JJSF2-14,JJSF2-20 JJSF2-21,JJSF2-22 JJSF2-26,JJSF2-29 JJSF2-32,JJSF2-35 OTU 2 JJSF2-12,JJSF2-18 NA Acinetobacter Acinetobacter JJSF2-23,JJSF2-30 OTU 3 NA JJSF5 Acinetobacter Acinetobacter OTU 4 NA JJSF2 Acinetobacter Acinetobacter OTU 5 JSF2-1,JJSF2-2 NA Klebsiella Klebsiella JJSF2-3,JJSF2-5 JJSF2-17,JJSF2-19 OTU 6 JJSF2-15,JJSF2-24 NA Klebsiella Klebsiella JJSF2-34,JJSF2-36 OTU 7 JJSF2-4,JJSF2-27 NA Enterococcus Enterococcus OTU 8 NA JJSF6 Enterococcus Enterococcus OTU 9 JJSF2-10,JJSF2-28 NA Bacillus Bacillus OTU 10 JJSF2-9 NA Bacillus Bacillus OTU 11 JJSF2-8,JJSF2-38 NA Staphylococcus Staphylococcus OTU 12 JJSF2-6,JJSF2-7 NA Micrococcus Micrococcus OTU 13 JJSF2-33,JJSF2-37 NA Micrococcus Micrococcus OTU 14 JJSF2-16 NA Stenotrophomonas Stenotrophomonas OTU 15 JJSF2-25 NA Pseudomonas Pseudomonas OTU 16 NA JJSF7 Pseudomonas Pseudomonas OTU 17 NA JJSF4 Enterobacter Enterobacter OTU 18 NA JJSF3 Enterobacter Enterobacter OTU 19 JJSF2-31 NA Sphingobacterium Sphingobacterium OTU 20 NA JJSF1 Erwinia Erwinia 注:NA表示未分离得到. -
[1] SPARKS A N. A Review of the Biology of the Fall Armyworm[J]. The Florida Entomologist, 1979, 62(2):82-87. doi: 10.2307/3494083 [2] 胡朝兴, 杨茂发, 郅军锐, 等.重大入侵害虫草地贪夜蛾对贵州省农业生产的潜在危害分析及其防控[J].山地农业生物学报, 2019, 38(3):1-5. doi: http://d.old.wanfangdata.com.cn/Periodical/sdnyswxb201903001 [3] 葛世帅, 何莉梅, 和伟, 等.草地贪夜蛾的飞行能力测定[J/OL].植物保护: 1-8(12019-07-01)[2019-08-17]. https://doi.org/10.16688/j.zwbh.2019322. [4] 刘杰, 姜玉英, 杨普云.草地贪夜蛾发生形势和监测防控对策建议[J].农民科技培训, 2019(7):31-34. doi: http://d.old.wanfangdata.com.cn/Periodical/nmkjpx201907010 [5] 卢增斌, 李丽莉, 张晴晴, 等.草地贪夜蛾对山东省玉米的危害风险及其监测防控研究进展[J].山东农业科学, 2019, 51(6):160-168. doi: http://d.old.wanfangdata.com.cn/Periodical/shandnykx201906031 [6] 陈勃生, 鲁兴萌, 邵勇奇.鳞翅目昆虫肠道微生物的多样性及其与宿主的相互作用[J].昆虫学报, 2017, 60(6):710-722. doi: http://d.old.wanfangdata.com.cn/Periodical/kcxb201706011 [7] 郭军, 吴杰, 邓先余, 等.昆虫肠道菌群的功能研究进展[J].应用昆虫学报, 2015, 52(6):1345-1352. doi: http://d.old.wanfangdata.com.cn/Periodical/kczs201506004 [8] 周洪英, 孙波, 吴洪丽, 等.昆虫肠道微生物功能及家蚕肠道微生物研究进展[J].北方蚕业, 2015, 36(4):1-4, 33. doi: 10.3969/j.issn.1673-9922.2015.04.001 [9] ENGEL P, MORAN N A. The Gut Microbiota of Insects-Diversity in Structure and Function[J]. FEMS Microbiology Reviews, 2013, 37(5):699-735. doi: 10.1111/1574-6976.12025 [10] doi: http://d.old.wanfangdata.com.cn/NSTLQK/10.1371-journal.pbio.0040188/ WU D Y, DAUGHERTY S C, VAN AKEN S E, et al. Metabolic Complementarity and Genomics of the Dual Bacterial Symbiosis of Sharpshooters[J]. PLoS Biology, 2006, 4(6):1079-1092. [11] SHEN S K, DOWD P F. Detoxification Spectrum of the Cigarette Beetle Symbiont Symbiotaphrina kochii in Culture[J]. Entomologia Experimentalis Et Applicata, 1991, 60(1):51-59. doi: 10.1111/j.1570-7458.1991.tb01522.x [12] CHEN B S, TEH B S, SUN C, et al. Biodiversity and Activity of the Gut Microbiota across the Life History of the Insect Herbivore Spodoptera littoralis[J]. Scientific Reports, 2016, 6:29505-1-29505-14. doi: 10.1038/srep29505 [13] 刘莉, 王中康, 俞和韦, 等.贡嘎蝠蛾幼虫肠道细菌多样性分析[J].微生物学报, 2008, 48(5):616-622. doi: 10.3321/j.issn:0001-6209.2008.05.009 [14] HE C, NAN X N, ZHANG Z Q, et al. Composition and Diversity Analysis of the Gut Bacterial Community of the Oriental Armyworm, Mythimna separata, Determined by Culture-Independent and Culture-Dependent Techniques.[J]. Journal of insect science (Online), 2013, 13(165):1-11. doi: 10.1673/031.013.16501 [15] ESKI A, DEMIR Í, GÜLLÜ M, et al. Biodiversity and Pathogenicity of Bacteria Associated with the Gut Microbiota of Beet Armyworm, Spodoptera exigua Hübner (Lepidoptera:Noctuidae).[J]. Microbial pathogenesis, 2018, 121:350-358. doi: 10.1016/j.micpath.2018.05.012 [16] 唐运林, 顾偌铖, 吴燕燕, 等.入侵重庆地区的草地贪夜蛾种群生物型鉴定[J].西南大学学报(自然科学版), 2019, 41(7):1-7. doi: http://xbgjxt.swu.edu.cn/jsuns/jsuns/ch/reader/view_abstract.aspx?file_no=201907001&flag=1 [17] 唐运林, 吴燕燕, 顾偌铖, 等.重庆地区草地贪夜蛾肠道细菌的分离鉴定[J].西南大学学报(自然科学版), 2019, 41(7):8-14. doi: http://xbgjxt.swu.edu.cn/jsuns/jsuns/ch/reader/view_abstract.aspx?file_no=201907002&flag=1 [18] 顾偌铖, 唐运林, 吴燕燕, 等.重庆巫山地区采食玉米的草地贪夜蛾肠道细菌的分离鉴定补遗[J].西南大学学报(自然科学版), 2019, 41(8):1-5. doi: http://xbgjxt.swu.edu.cn/jsuns/jsuns/ch/reader/view_abstract.aspx?file_no=201908001&flag=1 [19] 顾偌铖, 唐运林, 吴燕燕, 等.重庆地区取食高粱的草地贪夜蛾与玉米黏虫肠道细菌比较[J].西南大学学报(自然科学版), 2019, 41(8):6-13. doi: http://xbgjxt.swu.edu.cn/jsuns/jsuns/ch/reader/view_abstract.aspx?file_no=201908002&flag=1 [20] TAMURA K, PETERSON D, PETERSON N, et al. MEGA5:Molecular Evolutionary Genetics Analysis Using Maximum Likelihood, Evolutionary Distance, and Maximum Parsimony Methods.[J]. Molecular Biology and Evolution, 2011, 28(10):2731-2739. doi: 10.1093/molbev/msr121 [21] AMI E B, YUVAL B, JURKEVITCH E. Manipulation of the Microbiota of Mass-Reared Mediterranean Fruit Flies Ceratitis capitata (Diptera:Tephritidae) Improves Sterile Male Sexual Performance.[J]. The ISME Journal, 2010, 4(1):28-37. doi: 10.1038/ismej.2009.82 [22] 张帅帅, 南小宁, 王云果, 等.基于PCR-DGGE技术的3种植食性叶蜂幼虫肠道细菌群落结构分析[J].西北林学院学报, 2017, 32(5):154-160. doi: 10.3969/j.issn.1001-7461.2017.05.27