バッデンブロッキア (Buddenbrockia) は,コニダリアン種の虫である.
Eva Jiménez-Guri1, Hervé Philippe, Beth Okamura
1Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK.
まとめ
寄生虫の虫であるBuddenbrockia plumatellaeは,系統遺伝学的にクニダリアンと特定されています. この発見は,コニダリアンの体計画とワームのような形態の既知の多様性を拡張します.
科学分野:
- 動物学 動物学
- 進化生物学の進化生物学について
- 寄生虫学とは,寄生虫学である.
背景:
- 動物界は,放射線対称と双方向対称の生物に分かれています.
- クニダリアン (例えば,メダウイ) は放射性対称性を示し,ワーム族は双方向対称性を示しています.
- Myxozoa属には,分類が難しい簡素化され,顕微鏡で見ることができる内寄生虫が含まれています.
研究 の 目的:
- 寄生虫であるBuddenbrockia plumatellaeの遺伝子配置を決定する.
- 動物界におけるその体型の進化的影響を調査する.
主な方法:
- 系統遺伝的分析は,複数のタンパク質をコードする遺伝子を用いて行われました.
- ボディプランと対称性の比較分析が行われました.
主要な成果:
- 系統遺伝学的な分析により,Buddenbrockia plumatellaeはクニダリア属に決定的に位置づけられた.
- Buddenbrockiaは,活発で筋肉質な,ワームのような形を示し,コニダリアンの体計画に関する以前の仮定に異議を唱える.
結論:
- Buddenbrockia plumatellaeは,コニダリアンの体型プランの多様性に大きく加わります.
- この研究は,筋肉質で虫のような形が,動物における双極対称性とは無関係に進化することができることを示しています.
さらに関連する動画
09:55Transposon-insertion Sequencing as a Tool to Elucidate Bacterial Colonization Factors in a Burkholderia gladioli Symbiont of Lagria villosa Beetles
Published on: August 12, 2021
04:26Laboratory Maintenance of the Lower Dipteran Fly Bradysia (Sciara) coprophila: A New/Old Emerging Model Organism
Published on: April 19, 2024
関連する概念動画
Bacterial Phylum Planctomycetes
Planctomycetes are a group of morphologically distinct bacteria predominantly classified into two orders: Planctomycetales and Brocadiales. These gram-negative bacteria exhibit unique features, including division by budding and the presence of stalks or appendages. Their cells are often found in rosette arrangements, and they are notable for possessing an S-layer in their cell envelope, which is relatively uncommon among bacteria. Additionally, Planctomycetes frequently exhibit intracellular...
Bacterial Phylum Spirochaetes
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
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...
Overview of Protists
Protists are diverse eukaryotic microorganisms that lack the specialized tissues of plants and animals and the chitinous cell walls of fungi. Their early divergence within Eukarya resulted in structural, functional, and ecological diversity. They are classified into supergroups such as Archaeplastida, Excavata, Amoebozoa, Rhizaria, Alveolata, and Stramenopiles, determined through genetic analysis and structural similarities.Structural and Functional AdaptationsProtists have various adaptations...
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,...
