関連する実験動画
Updated: Sep 9, 2025

07:24
In Situ Hybridization Techniques for Paraffin-Embedded Adult Coral Samples
Published on: August 31, 2018
7.2K
オストラコッドのヘテロサイプリス・スパディクスにおける細菌内共生体カルディニウムの細胞内定位
Kohei Oguchi1,2, Mizuho Munakata3, Chizue Hiruta4
1Misaki Marine Biological Station, The University of Tokyo, Miura, Kanagawa 238-0225, Japan, k.ohgreen226@gmail.com.
Zoological science
|September 5, 2025
まとめ
シンビオティックなバクテリア カルディニウムが オストラコッド・ヘテロサイプリス・スパディクスの 生殖器官全体で見つかりました この発見は,カルディニウムが宿主繁殖,特にパルテノゲネシスを操作することを示唆しています.
科学分野:
- 微生物共生
- 甲殻類の生殖生物学
- 進化的微生物学
背景:
- 共生微生物は 宿主の繁殖を操作して 感染を起こすことができます
- カーディニウム細菌は,節足類の繁殖に影響することが知られているが,オストラコッドにおけるその役割は十分に理解されていない.
- パルテノゲネティック・オストラコッドは高カルディニウム感染率を示しており,無性繁殖との関連を示唆している.
研究 の 目的:
- パルテノゲネティックなオストラコッド・ヘテロサイプリス・スパディクスの生殖組織内のカルディニウムの局所化を調査する.
- オストラコッドの生殖操作におけるカルディニウムの潜在的役割を調査する.
主な方法:
- 内部の構造を視覚化するために組織をクリアする技術
- カルディニウム細菌を検出・局所化するための光インシトゥハイブリデーション (FISH).
- 感染した卵巣と肝臓の顕微鏡検査
主要な成果:
- 卵巣全体にカルディニウムが検出され,生殖器,看護細胞,卵細胞も含まれていた.
- バクテリアの分布は初期段階の分散から後期段階の周核まで異なっていた.
- 肝臓にカルディニウムが検出され 生殖器系と消化器系の両方の感染が確認されました
結論:
- ホストの生殖構造にカルディニウムの存在は,生殖操作の役割を示唆しています.
- この研究は,オストラコッドにおけるカルディニウムの最初の詳細な局所化を提供します.
- パルテノゲネシスの誘発におけるカルディニウムの役割を確認するには,さらなる研究が必要である.
関連する概念動画
Cell Inclusions
188
Prokaryotic cells possess a variety of inclusions that play crucial roles in nutrient storage, metabolic processes, and environmental adaptation. These structures enable bacteria to thrive under fluctuating environmental conditions by storing essential resources and optimizing their metabolic efficiency.Carbon Storage: Poly-β-Hydroxybutyric Acid and Glycogen GranulesBacteria frequently store excess carbon in specialized granules. Poly-β-hydroxybutyric acid (PHB) granules are lipid...
188
Diversity of Protists II
125
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...
125
Desmosomes
5.6K
The term desmosome derives from the Greek words "desmo" and "soma" meaning "adhesion bodies." This structure was first observed during the late 1800s and described as small, dense nodules in the epidermis. Desmosomes are button-like structures that help form an interlinked network of intermediate filaments across the cells. These junctions are essential to hold cells together under mechanical stress and to maintain tissue integrity. Desmosomes are multi-protein...
5.6K
Bacterial Phylum Spirochaetes
110
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...
110
Bacterial Phylum Planctomycetes
82
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...
82
Anchoring Junctions
3.9K
Anchoring junctions are multiprotein complexes that help cells connect to other cells and the extracellular matrix. Anchoring junctions are present on the lateral and basal surfaces of cells, providing strong and flexible connections. Focal adhesions are often formed due to cell interactions with the ECM substrata, which initiate signal transduction via kinase cascades and other mechanisms. Together, they provide stability and tissue integrity. There are three types of anchoring junctions:...
3.9K

