挖掘橄种子的微生物群
Nuria M Wentzien1, Antonio J Fernández-González1, Antonio Valverde-Corredor2
1Departamento de Microbiología del Suelo y la Planta, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas (CSIC), Granada, Spain.
Environmental microbiome
|March 16, 2024
概括
橄种子微生物群受到植物基因型的影响,显示出独特的细菌和真菌特征. 一些微生物可能会从根转移到种子,影响植物的发育.
科学领域:
- 植物与微生物的相互作用
- 微生物组研究的研究.
- 橄树生物学 橄树生物学
背景情况:
- 植物全生物体的健康取决于植物微生物相互作用.
- 橄种子微生物群在很大程度上仍然没有特征.
- 之前的研究没有研究橄种子的微生物群落.
研究的目的:
- 描述橄种子中的细菌,真菌和古生物群落.
- 为了确定橄的基因型是否影响种子的微生物组成.
- 为了确定种子微生物群的起源.
主要方法:
- 在十种橄基因型的种子中对细菌,真菌和古生物群落的Amplicon测序.
- 开发一种无菌技术,从橄种子中分离内层样本.
主要成果:
- 在橄种子中确定了多样化的微生物群,植物基因型显著塑造了社区结构.
- 动态细菌是占主导地位的细菌类 (41%的平均丰度),而链状细菌是关键的属.
- 贝西迪奥米科塔和阿斯科米科塔是主要的真菌类,包括马拉塞西亚,克拉多斯波里亚和米科斯费雷拉等属.
- 在基因型之间发现了四种细菌和三种真菌属的共享微生物组.
- 在同一棵树的种子和根内层中检测到Streptomyces和Malassezia等属.
结论:
- 这项研究首次对橄种子微生物群进行了表征,突出了马拉塞西亚和链杆菌的独特特征.
- 橄的基因型是塑造种子微生物社区组成的一个重要因素.
- 有证据表明,微生物可能从根部转移到种子,这表明可能的垂直传播途径.
相关概念视频
01:30Development of Human Microbiota
The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from the skin...
01:27The Skin Microbiota
The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
01:28Development of the Oral Microbiota
The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...
01:27Microbiota of the Stomach and Small Intestine
The human gastrointestinal (GI) tract is characterized by distinct physicochemical conditions that shape its microbial communities. Among these, the stomach presents a particularly challenging environment for microbial colonization due to its highly acidic pH, ranging from 1 to 3. This extreme acidity effectively limits microbial density. However, certain acid-tolerant microorganisms are capable of surviving in this niche. Notably, Helicobacter pylori can colonize the gastric mucosa,...
01:27Microbiota of the Large Intestine
The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...
01:21Microbiota Modulation by Antibiotics
Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...