基本信息
浏览量:98
职业迁徙
个人简介
The evolution of life has resulted in the cooperative aggregation of cohesive units that prosper together. These units may be the same, as with the evolution of multicellularity, or they may be different, as with the evolution of the eukaryote cell. For such cooperation to evolve, conflicts at lower levels must be controlled.
Joan Strassmann studies the evolution of cooperation and the control of conflict in a microbial eukaryote, the social amoeba Dictyostelium discoideum. It is uniquely suitable for this work because transitions that are fixed in most organisms are still flexible. This amoeba preys on bacteria but, when starved, aggregates into a multicellular body that moves towards light, and then differentiates into 20% dead stalk cells that support 80% living spore cells. When the multicellular stage is chimeric, the opportunity for one clone to cheat the other arises.
Strassmann identifies genes involved in this process, look at their rates of evolution using 20 resequenced clones and a handful of sequenced closely related species. She uses experimental evolution to look at the robustness of the social process and the importance of high genetic relatedness within fruiting bodies in maintaining the altruistic caste. She also explores kin recognition and its genetic basis. She studies the evolution of development by constructing pseudo-organisms with artificial life cycles where we manipulate things like single-cell bottlenecks, and has found that some clones carry bacteria with them in a farming and defensive mutualism, and use this to experimentally study mutualism. In sum, her group studies what’s crucial to organismality.
Joan Strassmann studies the evolution of cooperation and the control of conflict in a microbial eukaryote, the social amoeba Dictyostelium discoideum. It is uniquely suitable for this work because transitions that are fixed in most organisms are still flexible. This amoeba preys on bacteria but, when starved, aggregates into a multicellular body that moves towards light, and then differentiates into 20% dead stalk cells that support 80% living spore cells. When the multicellular stage is chimeric, the opportunity for one clone to cheat the other arises.
Strassmann identifies genes involved in this process, look at their rates of evolution using 20 resequenced clones and a handful of sequenced closely related species. She uses experimental evolution to look at the robustness of the social process and the importance of high genetic relatedness within fruiting bodies in maintaining the altruistic caste. She also explores kin recognition and its genetic basis. She studies the evolution of development by constructing pseudo-organisms with artificial life cycles where we manipulate things like single-cell bottlenecks, and has found that some clones carry bacteria with them in a farming and defensive mutualism, and use this to experimentally study mutualism. In sum, her group studies what’s crucial to organismality.
研究兴趣
论文共 272 篇作者统计合作学者相似作者
按年份排序按引用量排序主题筛选期刊级别筛选合作者筛选合作机构筛选
时间
引用量
主题
期刊级别
合作者
合作机构
PeerJ (2024): e17445-e17445
biorxiv(2024)
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICAno. 14 (2024): e2313203121-e2313203121
Proceedings. Biological sciencesno. 2027 (2024): 20241111-20241111
bioRxiv (Cold Spring Harbor Laboratory) (2023)
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCESno. 2013 (2023)
bioRxiv (Cold Spring Harbor Laboratory) (2023): e17118-e17118
Trey J. Scott,Tyler J. Larsen,Debra A. Brock, So Yeon Stacey Uhm,David C. Queller,Joan E. Strassmann
Figshare (2023)
bioRxiv (Cold Spring Harbor Laboratory) (2023)
加载更多
作者统计
#Papers: 272
#Citation: 13951
H-Index: 59
G-Index: 112
Sociability: 6
Diversity: 0
Activity: 1
合作学者
合作机构
D-Core
- 合作者
- 学生
- 导师
数据免责声明
页面数据均来自互联网公开来源、合作出版商和通过AI技术自动分析结果,我们不对页面数据的有效性、准确性、正确性、可靠性、完整性和及时性做出任何承诺和保证。若有疑问,可以通过电子邮件方式联系我们:report@aminer.cn