多种类型的蓝在淡水有害藻类繁殖中遵循明显的时间继承模式
Lauren N Hart1,2, Reagan Errera3, Casey Godwin4
1Program in Chemical Biology, University of Michigan, Ann Arbor, MI, United States.
The ISME journal
|February 19, 2026
概括
在全球范围内,有毒的蓝藻细菌的繁殖正在加剧. 这项研究揭示了超越微囊的蓝多样性的季节性模式,由蓝菌转移和环境因素驱动,影响淡水资源.
科学领域:
- 环境微生物学环境微生物学
- 水生生态学 水生生态学
- 生物地质化学生物地质化学
背景情况:
- 有毒的蓝藻细菌有害藻类繁殖 (cyanoHABs) 对淡水资源构成了全球性的威胁,因缩而加剧.
- 毒性与蓝藻细菌毒素产生的物种内变异有关,但对微囊以外的蓝藻多样性的研究是有限的.
研究的目的:
- 调查蓝藻细菌有害藻类繁殖中蓝多样性的时间动态和驱动因素.
- 分析埃里湖西部的蓝藻细菌,其代谢物和生物合成基因集群 (BGCs) 的季节性模式.
主要方法:
- 利用7年的时间序列 (2016-2022) 从伊利湖西部的元基因组和代谢组数据.
- 应用等级聚类来识别共同变化的BGC (生物合成模块).
- 与环境因素 (温度,) 和生态压力 (放牧者) 相关的代谢物和BGC模式.
主要成果:
- 观察到从Microcystis到Dolichospermum的季节性转变,与较低的温度有关.
- 确定了不同的生物合成模块,在不同的时间达到峰值,包括富含非核糖体合成酶 (NRPS),多基合成酶 (PKS) 和核糖体合成和翻译后修饰 (RiPP) 的生物合成模块.
- 证实了三个不同的代谢阶段 (microcystins,anabaenopeptins/aeruginosins,aerucyclamides),它们遵循BGC和环境压力的季节性模式.
结论:
- 证明了超越微囊的蓝藻细菌代谢物的一贯季节顺序和同时发生.
- 突出了不同生物合成途径的资源需求与生态控制之间的潜在权衡.
- 提供了对塑造有害藻类开花中的烯多样性的复杂生态动态的见解.
相关概念视频
Red Algae
1.2K
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
1.2K
Bacterial Phylum Cyanobacteria
709
Cyanobacteria are a diverse group of oxygenic, phototrophic bacteria that played a pivotal role in converting Earth’s atmosphere from anoxic to oxygen-rich billions of years ago. They exhibit remarkable morphological diversity, ranging from unicellular forms to filamentous types, with cell sizes varying between 0.5 μm and 100 μm. Cyanobacteria are classified into five groups: Chroococcales (unicellular, dividing by binary fission), Pleurocapsales (unicellular, dividing by...
709
Other Algae
528
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
528
Diversity of Protists II
1.3K
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
1.3K
Overview of Algae
1.1K
The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
1.1K
Green Algae
935
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
935


