-
昆虫的肠道微生物种类和丰度会因食物、地域和生长发育等不同而出现差异,相同地域、相同食物的不同昆虫之间肠道微生物也会存在较大差异. Vanessa等人通过高通量测序研究表明,不同地区、不同环境下的果蝇肠道微生物的组成以及丰度存在差异,但主要优势菌属为乳酸杆菌属以及醋酸杆菌属[1].向芸庆等人通过传统培养的方法鉴定发现,从柘叶饲养家蚕肠道中分离出的优势菌群与桑叶饲养的家蚕相比,出现了较大差异且不如桑叶饲养家蚕的菌群丰富,并推测这种改变可能与柘叶饲养家蚕生长发育不良、容易患病具有相关性[2].此外邵勇奇课题组研究发现,家蚕、桑剑纹夜蛾以及桑螟3种以桑叶喂食的昆虫的肠道微生物的组成以及丰度都存在差异[3].
草地贪夜蛾(Spodoptera frugiperda),又名秋粘虫、行军虫,起源于美洲,被联合国粮农组织称为“全球重大跨国迁飞性农业害虫”,其食谱广泛,主要包括禾本科、菊科和豆科植物,于2019年初入侵中国并对中国的农业生产造成了巨大威胁[4-7].美国和巴西已经开展了草地贪夜蛾肠道优势细菌分离鉴定工作[8-9],但主要是对玉米地中的草地贪夜蛾肠道微生物进行的研究.本课题组前期研究对在重庆的巫山、巫溪、潼南等地区的玉米地捕捉的草地贪夜蛾进行了生物型以及肠道细菌鉴定分析,在巫山、巫溪地区分离得到了5个属的分离株,分别为克雷伯氏菌属(Klebsiella),不动杆菌属(Acinetobacter),假单胞菌属(Pseudomonas),肠杆菌属(Enterobacter)以及气单胞菌属(Aeromonas)[10-11].最近在重庆江津地区高粱地同时发现有少量草地贪夜蛾和大量玉米粘虫(Mythimna seperata)的存在,为我们研究取食同一食材的入侵昆虫与当地固有昆虫的肠道微生物提供了很好的素材.
本研究采集了重庆江津地区同一片高粱地中的草地贪夜蛾和玉米粘虫样本,通过传统培养法以及16S rDNA测序对草地贪夜蛾和玉米粘虫的肠道优势菌进行了初步分离鉴定,并对相同生境中两种昆虫肠道优势细菌类型进行了比较.同时我们也对不同食性的草地贪夜蛾肠道微生物优势菌进行了比较分析,以期为后续深入研究草地贪夜蛾核心肠道微生物群奠定基础.
Comparison of Gut Bacteria Between Spodoptera frugiperda and Mythimna seperata Feeding on Sorghum in Chongqing Area
-
摘要: 草地贪夜蛾(Spodoptera frugiperda)于2019年5月被发现已经入侵至重庆地区,6月底在江津地区的高粱地中也发现了少量的草地贪夜蛾,同时还发现了大量玉米粘虫(Mythimna seperata).通过分离培养同一生境内的草地贪夜蛾和玉米粘虫的肠道细菌,结合16S rDNA测序完成了这两种害虫肠道优势菌属水平的鉴定,共分离得到了19个细菌分离株,其中分离自草地贪夜蛾肠道细菌归为5个属,分别为欧文氏菌属(Erwinia),不动杆菌属(Acinetobacter),肠杆菌属(Enterobacter),肠球菌属(Enterococcus),假单胞菌属(Pseudomonas).分离自玉米粘虫肠道细菌归为6个属,分别为克雷伯氏菌属(Klebsiella),不动杆菌属(Acinetobacter),寡养单胞菌属(Stenotrophomonas),肠球菌属(Enterococcus),金黄杆菌属(Chryseobacterium),芽孢杆菌属(Bacillus).同时我们也对采自玉米地和高粱地的草地贪夜蛾肠道微生物优势菌进行了比较分析,在江津高粱地中的草地贪夜蛾中没有发现克雷伯氏菌,但该菌在巫山、巫溪玉米地的草地贪夜蛾中大量存在.结论为进一步研究草地贪夜蛾幼虫肠道核心微生物群奠定了基础.Abstract: In May of 2019, Spodoptera frugiperda migrated to Chongqing and spread rapidly. It was found in maize fields in several counties and districts. At the end of June, a little S. frugiperda and plenty Mythimna seperata were found in sorghum fields in Jiangjin district. In this study we isolated the intestinal dominant bacteria from the larvae of S. frugiperda and M. seperata, and used 16S rDNA sequencing to identify their dominant genera. In total, we obtained 19 isolates of bacteria, of which Erwinia, Acinetobacter, Enterobacter, Enterococcus and Pseudomonas were identified from S. frugiperda; Klebsiella, Acinetobacter, Stenotrophomonas, Enterococcus, Chryseobacterium and Bacillus were idenfified from M. seperata. The dominant bacteria types in the gut of the two insects in the same habitat were obviously diffierent although two genera were same. At the same time, we also conducted a comparative analysis of the dominant intestinal bacteria of S. frugiperda in the maize field and the sorghum field. We did not find Klebsiella sp. in S. frugiperda feeding on sorghum in Jiangjin district, which was abundant in the S. frugiperda feeding on maize in Wushan and Wuxi. This work may lay a foundation for further study on the core intestinal microorganisms of the S. frugiperda larvae.
-
Key words:
- Chongqing area /
- sorghum /
- Spodoptera frugiperda /
- Mythimna seperata /
- gut bacteria .
-
表 1 江津草地贪夜蛾与玉米粘虫肠道细菌分离株种属统计
OTU ID 样品来源 NCBI ID RDP ID 草地贪夜蛾 玉米粘虫 OTU1 未分离到 JJM1 Klebsiella Klebsiella JJM3 JJM5 JJM7 OTU2 JJSF2 JJM2 Acinetobacter Acinetobacter JJM4 JJM6 JJM8 OTU3 JJSF7 未分离到 Pseudomonas Pseudomonas OTU4 JJSF4 未分离到 Enterobacter Enterobacter OTU5 未分离到 JJM11 Chryseobacterium Chryseobacterium OTU6 JJSF3 未分离到 Enterobacter Enterobacter OTU7 未分离到 JJM12 Bacillus Bacillus OTU8 JJSF5 未分离到 Acinetobacter Acinetobacter OTU9 JJSF6 未分离到 Enterococcus Enterococcus OTU10 未分离到 JJM10 Enterococcus Enterococcus OTU11 JJSF1 未分离到 Erwinia Erwinia OTU12 未分离到 JJM9 Stenotrophomonas Stenotrophomonas 注:JJSF1-JJSF6,JJM1-JJM9分离自粪便;JJSF7,JJM10-JJM12分离自中肠. -
[1] CORBY-HARRIS V, PONTAROLI A C, SHIMKETS L J, et al. Geographical Distribution and Diversity of Bacteria Associated with Natural Populations of Drosophila Melanogaster[J]. Applied and Environmental Microbiology, 2007, 73(11):3470-3479. doi: 10.1128/AEM.02120-06 [2] 向芸庆, 王晓强, 冯伟, 等.不同饲料饲养家蚕其肠道微生态优势菌群类型的组成及差异性[J].生态学报, 2010, 30(14):3875-3882. doi: http://d.old.wanfangdata.com.cn/Periodical/stxb201014025 [3] CHEN B S, DU K Q, SUN C, et al. Gut Bacterial and Fungal Communities of the Domesticated Silkworm (Bombyx mori) and Wild Mulberry-Feeding Relatives[J]. The ISME Journal, 2018, 12(9):2252-2262. doi: 10.1038/s41396-018-0174-1 [4] 陈冬平, 陈志廷, 徐汉虹, 等.不同分子标记对入侵广州草地贪夜蛾的寄主型鉴别能力比较[J/OL].华南农业大学学报: 1-5[2019-07-12]. http://kns.cnki.net/kcms/detail/44.1110.S.20190617.1027.002.html. [5] 秦誉嘉, 蓝帅, 赵紫华, 等.迁飞性害虫草地贪夜蛾在我国的潜在地理分布[J/OL].植物保护: 1-8[2019-07-12]. https://doi.org/10.16688/j.zwbh.2019269. [6] 张磊, 靳明辉, 张丹丹, 等.入侵云南草地贪夜蛾的分子鉴定[J].植物保护, 2019, 45(2):19-24, 56. doi: http://d.old.wanfangdata.com.cn/Periodical/zwbh201902005 [7] 齐国君, 马健, 胡高, 等.首次入侵广东的草地贪夜蛾迁入路径及天气背景分析[J].环境昆虫学报, 2019, 41(3):488-496. doi: http://d.old.wanfangdata.com.cn/Periodical/kctd201903008 [8] ACEVEDO F E, PEIFFER M, TAN C W, et al. Fall Armyworm-Associated Gut Bacteria Modulate Plant Defense Responses[J]. Molecular Plant-Microbe Interactions, 2017, 30(2):127-137. doi: 10.1094/MPMI-11-16-0240-R [9] OLIVEIRA P L. The Gut Microbiota of Insecticide-Resistant Insects Houses Insecticide-Degrading Bacteria:A Potential Source for Biotechnological Exploitation[J]. PLoS One, 2017, 12(3):e0174754. doi: 10.1371/journal.pone.0174754 [10] 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://epub.cnki.net/grid2008/detail.aspx?filename=XNND201907002&dbname=DKFXTEMP [11] 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://epub.cnki.net/grid2008/detail.aspx?filename=XNND201908002&dbname=DKFXTEMP [12] 李玉娟, 苏琬真, 胡坤坤, 等.植物乳杆菌促进黑腹果蝇生长发育[J].昆虫学报, 2017, 60(5):544-552. doi: http://d.old.wanfangdata.com.cn/Periodical/kcxb201705006 [13] SCHRETTER C E, VIELMETTER J, BARTOS I, et al. A Gut Microbial Factor Modulates Locomotor Behaviour in Drosophila[J]. Nature, 2018, 563(7731):402-406. doi: 10.1038/s41586-018-0634-9 [14] IATSENKO I, BOQUETE J P, LEMAITRE B. Microbiota-Derived Lactate Activates Production of Reactive Oxygen Species by the Intestinal NADPH Oxidase Nox and Shortens Drosophila Lifespan[J]. Immunity, 2018, 49(5):929-942. doi: 10.1016/j.immuni.2018.09.017 [15] 宋月, 李娜, 岳莹雪, 等.膳食中的主要成分对肠道微生物组成及代谢影响的研究进展[J/OL].食品工业科技: 1-9[2019-07-12]. http://kns.cnki.net/kcms/detail/11.1759.ts.20190506.1637.035.html. [16] 刘春蕾.不同糖源饲料对越冬蜜蜂肠道健康及肠道微生物区系的影响[D].泰安: 山东农业大学, 2017. http://cdmd.cnki.com.cn/Article/CDMD-10434-1017101346.htm [17] 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, 2013, 13(165):1-11. doi: 10.1673/031.013.16501 [18] doi: http://cn.bing.com/academic/profile?id=2540e7e6dab24d6717bb90e806156c9a&encoded=0&v=paper_preview&mkt=zh-cn HANNULA S E, ZHU F, HEINEN R, et al. Foliar-Feeding Insects Acquire Microbiomes from the Soil rather than the Host Plant[J]. Nature Communications, 2019(10):1254.