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Gut microbiota communities and their multifaceted roles in immune defense and social behavior of the red imported fire ant (Solenopsis invicta) 红火蚁肠道微生物群落及其在免疫防御和社会行为中的多重作用
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-08 DOI: 10.1016/j.micres.2026.128438
Ezzeldin Ibrahim , Raghda Nasser , Jiayi Zhang , Solabomi Olaitan Ayoade , Lei Chen , Hui Yu , Liangliang Sang , Rahila Hafeez , Jinyan Luo , Jianfei Lu , Bin Li
The red imported fire ant (Solenopsis invicta) is an invasive species recognized for its aggressive behavior, posing significant risks to human health and local ecosystems. Pathogenic microbes, including fungi, bacteria, and viruses, play a critical role in the population of this pest and limiting its damage. Recent studies highlight the essential functions of gut microbiota, particularly bacteria, in enhancing S. invicta's immune responses to these pathogens. This review examines the diversity of gut microbiota in S. invicta, elucidating their contributions to immunity against pathogenic infections and their impact on the ant's overall activity and behavior. Previous studies indicate that the gut microbiota of S. invicta comprises various bacterial genera, including Pseudomonas aeruginosa, Actinobacteria, Staphylococcus, Lactococcus, Ralstonia, Achromobacter, and Lansdales, which play vital roles, particularly in digestion, nutrient synthesis, and immune function against pathogens. Furthermore, the composition of gut microbiota significantly influences foraging efficiency and social interactions within S. invicta colonies. Therefore, understanding the role of gut microbiota in the behavior and activity of S. invicta provides valuable insights for developing effective management strategies to control their populations. This review summarizes previous research on gut microbiota in S. invicta, focusing on its ecological significance and implications for future pest management studies.
红火蚁（Solenopsis invicta）是一种入侵物种，因其攻击行为而被公认，对人类健康和当地生态系统构成重大风险。病原微生物，包括真菌、细菌和病毒，在这种害虫的数量和限制其损害方面起着关键作用。最近的研究强调了肠道微生物群的基本功能，特别是细菌，在增强不可侵犯链球菌对这些病原体的免疫反应方面。本文综述了invicta蚂蚁肠道微生物群的多样性，阐明了它们对致病性感染免疫的贡献及其对蚂蚁整体活动和行为的影响。以往的研究表明，invicta的肠道微生物群包括铜绿假单胞菌、放线菌、葡萄球菌、乳球菌、Ralstonia、Achromobacter和Lansdales等多种细菌属，它们在消化、营养合成和对病原体的免疫功能方面起着至关重要的作用。此外，肠道菌群的组成显著影响不可侵犯葡萄菌落的觅食效率和社会互动。因此，了解肠道微生物群在不可侵犯链球菌的行为和活动中的作用，为制定有效的管理策略来控制其种群提供了有价值的见解。本文综述了invicta肠道菌群的研究进展，重点介绍了其生态学意义和对未来害虫防治研究的启示。
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引用次数: 0
Exploring the genomic features and plant growth-promoting properties of Enterobacter vonholyi Y16 isolated from maize rhizosphere 玉米根际冯霍利肠杆菌Y16的基因组特征及促植物生长特性研究
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-04 DOI: 10.1016/j.micres.2026.128437
Jiacan Xu , Junnan Fang , Ruigang Wu , Yichen Wang , Chun Zhang , Xuming Wang , Tianlei Qiu
Maize yields rely heavily on chemical fertilizers, yet over half of the applied nitrogen remains unutilized, and excessive use harms soil, highlighting the need for sustainable alternatives. Plant growth-promoting rhizobacteria (PGPR) enhance plant growth and stress resistance, providing sustainable agricultural solutions. Here, we isolated Enterobacter vonholyi Y16 from the maize rhizosphere, and demonstrated multiple plant growth-promoting traits, including phosphate solubilization, potassium solubilization, siderophore secretion, and indole-3-acetic acid biosynthesis. An integrated approach combining rhizosphere microbiome profiling with plant transcriptomics was employed to elucidate the mechanisms of gene expression changes underlying PGPR-induced maize growth promotion. Inoculation with Y16 significantly increased primary root length in Arabidopsis thaliana by 16.7 %, and enhanced maize plant height, stem diameter, fresh shoot weight, and fresh root weight by 18.41 %, 22.32 %, 48.41 %, and 62.31 %, respectively. Strain Y16 successfully colonized the rhizosphere and influenced bacterial community composition under sterile soil conditions. Transcriptomic analysis revealed Y16-mediated regulation of key pathways, including plant hormone signaling, mitogen-activated protein kinase signaling, phenylpropanoid biosynthesis, and starch and sucrose metabolism. Notably, auxin-responsive genes were upregulated, correlating with Y16 abundance. These findings provide theoretical evidence for the molecular mechanisms of plant growth promotion by PGPR and offer insights for advancing sustainable agricultural development.
玉米产量严重依赖化肥，但施用的氮肥有一半以上未得到利用，过度使用对土壤有害，因此需要可持续的替代方案。促进植物生长的根瘤菌（PGPR）可以提高植物的生长和抗逆性，为可持续农业提供解决方案。在这里，我们从玉米根际分离出冯霍利肠杆菌Y16，并显示出多种促进植物生长的特性，包括磷酸盐增溶、钾增溶、铁载体分泌和吲哚-3-乙酸生物合成。采用根际微生物组分析和植物转录组学相结合的综合方法，阐明了pgpr诱导玉米生长促进的基因表达变化机制。接种Y16后，拟南芥初生根长增加了16.7 %，玉米株高、茎粗、鲜梢重和鲜根重分别增加了18.41 %、22.32 %、48.41 %和62.31 %。菌株Y16在无菌土壤条件下成功定植根际并影响细菌群落组成。转录组学分析揭示了y16介导的关键通路调控，包括植物激素信号、丝裂原激活的蛋白激酶信号、苯丙素生物合成以及淀粉和蔗糖代谢。值得注意的是，生长素响应基因上调，与Y16丰度相关。这些发现为探究PGPR促进植物生长的分子机制提供了理论依据，为促进农业可持续发展提供了参考。
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
IF 6.9 1区 生物学 Q1 MICROBIOLOGY
Microbiological research
Pub Date : 2026-01-01
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引用次数: 0
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