相关实验视频

Updated: Jun 28, 2025

Single-plant, Sterile Microcosms for Nodulation and Growth of the Legume Plant Medicago truncatula with the Rhizobial Symbiont Sinorhizobium meliloti

Single-plant, Sterile Microcosms for Nodulation and Growth of the Legume Plant Medicago truncatula with the Rhizobial Symbiont Sinorhizobium meliloti

Published on: October 1, 2013

在日本绿色鱼,Megasyllis nipponica stolonization期间的二次尾部形成

Daisuke S Sato¹, Mayuko Nakamura¹, María Teresa Aguado²

¹Misaki Marine Biological Station, The University of Tokyo, Miura, Kanagawa, Japan.

Evolution & development

|April 22, 2024

概括

虫通过 stolonization 生殖,其中一个新的个体从后部段形成. 这项研究揭示了 stolonization 期间的二次尾部形成与 Megasyllis nipponica 典型的后部再生显著不同.

科学领域:

海洋生物学海洋生物学
发育生物学发展生物学
安内利德研究研究

背景情况:

类类动物表现出 stolonization,这是一个独特的繁殖模式,涉及后部段转变.
巨尼波尼卡 (Megasyllis nipponica) 在脱落之前会形成一个带有二次尾巴的骨,这与截肢后的再生不同.

研究的目的:

为了比较 stolonization 和后部再生期间的二次尾巴形成的发育过程.
为了阐明这两个尾巴形成机制之间的形态和细胞差异.

主要方法:

尾巴形成的比较形态分析.
对细胞增殖模式的观察.
在这两种过程中详细检查肌肉和神经系统的发育.

主要成果:

二次尾部形成缺乏胚芽形成和后部再生中看到的肌肉/神经的直接伤口再生.
二次尾巴发育的独特特征包括融合的腹侧半尾巴芽和分离前的肌肉/神经分支.
在 stolonization-associated 尾巴形成和截肢后再生之间的发育途径中发现了显著的差异.

结论:

在Megasyllis nipponica中,二次尾巴形成是一个明显的发育过程,而不是直接的再生.
二次尾巴发育的新特征很可能是适应性的,使得随后的 stolonization 能够快速恢复.
了解这些差异可以了解类动物的繁殖和再生的演变.

关键词:

在西里达科 (Syllidae) 中.半尾尾的花蕾是半尾的花蕾.复兴再生是一种再生方式.二次尾巴的第二个尾巴.stolonization stolonization 石块化石块化石块化石块化石块化

更多相关视频

Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis

Inducing Complete Polyp Regeneration from the Aboral Physa of the Starlet Sea Anemone Nematostella vectensis

Published on: January 14, 2017

Methods for the Study of Regeneration in Stentor

Methods for the Study of Regeneration in Stentor

Published on: June 13, 2018

相关概念视频

Primary and Secondary Growth in Roots and Shoots

Primary and Secondary Growth in Roots and Shoots

Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.

Seed Structure and Early Development of the Sporophyte

Seed Structure and Early Development of the Sporophyte

Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.

Mechanism of Lamellipodia Formation

Mechanism of Lamellipodia Formation

Cells migrating in response to external stimuli form lamellipodia, which are thin membrane protrusions supported by a mesh of linked, branched, or unbranched actin filaments. These actin filaments interact with myosin motor proteins, creating the dynamic actomyosin complex within the cytoskeleton. Contractility, or the ability to generate contractile stress, is inherent to the actomyosin complex. It helps cells detect the stiffness of the surrounding ECM and exert contractile force for...