Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Non-vascular Seedless Plants02:26

Non-vascular Seedless Plants

58.1K
The diverse plant life on Earth—consisting of nearly 400,000 species—can be divided into three broad categories based on biological characteristics: nonvascular, seedless vascular, and seed plants.
58.1K
Seedless Vascular Plants03:24

Seedless Vascular Plants

54.6K
Seedless Vascular Plants Were the First Tall Plants on Earth
54.6K
Morphogenesis02:19

Morphogenesis

20.0K
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
20.0K
The Angiosperm Life Cycle02:39

The Angiosperm Life Cycle

62.7K
Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.
62.7K
Seed Structure and Early Development of the Sporophyte02:33

Seed Structure and Early Development of the Sporophyte

27.7K
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.
27.7K
The Evidence for Evolution02:55

The Evidence for Evolution

40.3K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
40.3K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Ontogenetic correlates, not direct adaptation, explain the evolution of stelar morphology.

The New phytologist·2024
Same author

A stomate by any other name? The open question of hornwort gametophytic pores, their homology, and implications for the evolution of stomates.

The New phytologist·2024
Same author

A bump in the node: The hydraulic implications of rhizomatous growth.

American journal of botany·2022
Same author

Rapid diversification of vascular architecture underlies the Carboniferous fern radiation.

Proceedings. Biological sciences·2022
Same author

Unveiling the many meanings of the term 'naked bud': A response to Burrows (2022) 'Eucalypt naked buds - expansion or abscission?'

The New phytologist·2022
Same author

Interspecific morphological variation in Juglandoideae resting bud organization: a winter's tale?

Annals of botany·2022

相关实验视频

Updated: May 6, 2026

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds
08:05

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds

Published on: June 7, 2013

17.4K

胚胎学证据表明,在早期的血管精子进化过程中,有发育性可变性.

William E Friedman1

  • 1Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, Colorado 80309, USA. ned@colorado.edu

Nature
|May 20, 2006
PubMed
概括

在Amborella trichopoda中发现了一种新的胚胎囊结构,这是最古老的血管精子系. 这一发现揭示了开花植物广泛的早期进化和发育实验.

科学领域:

  • 进化发育生物学 进化发育生物学
  • 植物生殖生物学 植物生殖生物学
  • 古植物学是古植物学.

背景情况:

  • 雄种子系的重建和古植物学揭示了在1500万年内,开花植物早期多样化为单花,eumagnoliids和eudicotyledons.
  • 这一早期时期,植物和花特征发生了显著的演变.

研究的目的:

  • 报告在Amborella trichopoda中发现的一种新型胚胎囊 (血管精子雌性配体).
  • 为了研究这项发现对理解早期血管精子进化的影响.

主要方法:

  • 在Amborella trichopoda胚胎囊结构的比较分析.
  • 这一发现的遗传学背景在血管精子进化过程中.

主要成果:

  • 在Amborella trichopoda中确定了胚胎囊结构的新模式,这是目前最基本的血管精子系.
  • 这是50多年来首次发现新的胚胎囊结构.

结论:

  • 这一发现支持了在早期血管精子进化过程中进行了广泛的发育实验和结构可变性的假设.
  • 这一发现可能提供了血管和它们的体的祖先之间的联系.

更多相关视频

A Method for Characterizing Embryogenesis in Arabidopsis
10:24

A Method for Characterizing Embryogenesis in Arabidopsis

Published on: August 4, 2017

10.9K
Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques
09:17

Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques

Published on: April 12, 2018

16.9K

相关实验视频

Last Updated: May 6, 2026

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds
08:05

Efficient and Rapid Isolation of Early-stage Embryos from Arabidopsis thaliana Seeds

Published on: June 7, 2013

17.4K
A Method for Characterizing Embryogenesis in Arabidopsis
10:24

A Method for Characterizing Embryogenesis in Arabidopsis

Published on: August 4, 2017

10.9K
Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques
09:17

Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques

Published on: April 12, 2018

16.9K