长期的功能性囊整形在盆地类植物中
Doron Pinko1, Dewi Langlet2,3, Olha Sur2
1Department of Earth and Environmental Science, Ben-Gurion University of the Negev, Beer Sheva 8410501, Israel.
iScience
|March 24, 2025
概括
类原生体,Hauerina diversa,可以长时间保留猎物的叶绿体 (叶绿体). 这项研究揭示了没有光抑制的稳定囊成形,表明了强大的宿主-囊成形伙伴关系.
科学领域:
- 海洋生物学 海洋生物学
- 亲生组织学 亲生组织学 Protistology
- 交生研究 交生研究
背景情况:
- 类植物 (Foraminifera) 是多样化的根茎原生植物.
- 一些类动物表现出克莱普托塑性,从猎物中保留了叶绿体.
- 哈维里纳多斯帕 (Hauerina diversa) 是一种研究用于囊造形的盆地菌.
研究的目的:
- 为了研究在Hauerina diversa.中的宿主-囊细胞相互作用.
- 了解H. diversa.中的囊细胞的稳定性和光合作用活性.
- 探索H. diversa对囊形成的承诺.
主要方法:
- 在不同的光强度下评估H. diversa的光合作用速率.
- 观察H. diversa中塑的保留,这些H. diversa被剥夺了50天的异质养.
- 分析宿主 - 囊细胞相互作用和潜在的维护机制.
主要成果:
- 在H. diversa中,叶囊细胞在广泛的光范围内表现出活性,而没有光抑制.
- 这种缺乏光抑制可能源于丢失的宿主特异性光抑制元素.
- 即使没有食,也观察到延长了囊细胞的保留时间 (50天).
结论:
- 哈维里娜·迪佛萨斯 (Hauerina diversa) 显示出稳定且长期的囊整形.
- 这种生物体表现出对克莱普托普拉斯特伙伴关系的高度承诺.
- 维护机制可能与其他携带共生体的虫相似.
相关概念视频
Diversity of Protists I
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
Diversity of Protists II
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...
Diversity of Protists III
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
Microbial Mats
Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...


