基本信息
浏览量:80
职业迁徙
个人简介
Research
Thermomorphogenesis
Temperature is a major factor governing distribution and seasonal behaviour of plants. Being sessile, plants are highly responsive to small differences in temperature and adjust their growth and development accordingly. The suite of morphological and architectural changes induced by high ambient temperatures is collectively called thermomorphogenesis (Quint et al., 2016, Nature Plants). Understanding the molecular genetic circuitries underlying thermomorphogenesis is particularly relevant in the context of climate change as this knowledge will be key to breed for thermo-tolerant crop varieties in a rational fashion. Until quite recently the fundamental mechanisms of temperature perception and signalling remained unknown. Our understanding of temperature signalling is now progressing mainly by exploiting the model plant Arabidopsis thaliana. The transcription factor PHYTOCHROME INTERACTING FACTOR 4 (PIF4) has emerged as a key player and controls phytohormone levels and their activity. To control thermomorphogenesis, multiple regulatory circuits are in place to modulate PIF4 levels, activity, and its downstream mechanisms. Thermomorphogenesis is integrally governed by various light signalling pathways, the circadian clock, epigenetic mechanisms and chromatin-level regulation. Our lab is primarily interested in the regulation of the PIF4-dependent branch of the pathway and recently contributed to understanding of temperature-dependent regulation of PIF4 itself (Delker et al., 2014, Cell Reports; Raschke/Ibanez et al., 2015, BMC Plant Biology). As we are beginning to understand the fundamentals of thermomorphogenesis signaling, we are currently testing the validity of the gained knowledge also in crop systems. In the future, this translational research will become more and more important.
The developmental hourglass
Embryogenesis coordinates the transformation of a single fertilized egg cell into a differentiated, complex organism. Based on von Baer’s third law of embryology (1828), it has been observed that embryos of animal species from the same phylum share a developmental stage with apparent morphological similarities. Animal embryos from the same phylum often appear morphologically different in early embryogenesis, converge to a similar form during mid embryogenesis, and diverge again in late embryogenesis. This morphological pattern is known as the developmental hourglass pattern (Duboule, 1994; Raff, 1996), and the stage or period of maximum morphological conservation in mid embryogenesis is called phylotypic stage (Sander, 1983) or phylotypic period (Richardson, 1995).
Recently, several groups succeeded in providing a possible explanation for the morphological hourglass pattern in animals by observing an hourglass pattern also at the transcriptome level. Distance-based comparisons of transcriptomes of related species (Kalinka et al., 2010; Irie and Kuratani, 2011; Levin et al., 2012) or transcriptome indices based on the combination of evolutionary with transcriptomic information (= phylotranscriptomics) of a single species (Domazet-Lošo and Tautz, 2010) revealed the existence of a phylotranscriptomic hourglass pattern in different animal lineages. Although embryogenesis plays a similarly essential role in plant development, the whole concept had apparently never been addressed in plants. We were therefore interested to investigate the developmental hourglass model in the plant kingdom. In collaboration with Ivo Grosse‘s bioinformatics group at the MLU Halle we performed phylotranscriptomic analyses of Arabidopsis thaliana embryogenesis and, to our surprise, observed a ‘perfect’ hourglass shaped phylotranscriptomic pattern (Quint et al., Nature, 2012; Drost et al., 2015, Mol Biol Evol). We are currently investigating the hourglass phenomenon in post-embryonic developmental processes and believe that our findings in the plant lineage will enable us to better understand this historic enigma in both animal and plant kingdoms.
Thermomorphogenesis
Temperature is a major factor governing distribution and seasonal behaviour of plants. Being sessile, plants are highly responsive to small differences in temperature and adjust their growth and development accordingly. The suite of morphological and architectural changes induced by high ambient temperatures is collectively called thermomorphogenesis (Quint et al., 2016, Nature Plants). Understanding the molecular genetic circuitries underlying thermomorphogenesis is particularly relevant in the context of climate change as this knowledge will be key to breed for thermo-tolerant crop varieties in a rational fashion. Until quite recently the fundamental mechanisms of temperature perception and signalling remained unknown. Our understanding of temperature signalling is now progressing mainly by exploiting the model plant Arabidopsis thaliana. The transcription factor PHYTOCHROME INTERACTING FACTOR 4 (PIF4) has emerged as a key player and controls phytohormone levels and their activity. To control thermomorphogenesis, multiple regulatory circuits are in place to modulate PIF4 levels, activity, and its downstream mechanisms. Thermomorphogenesis is integrally governed by various light signalling pathways, the circadian clock, epigenetic mechanisms and chromatin-level regulation. Our lab is primarily interested in the regulation of the PIF4-dependent branch of the pathway and recently contributed to understanding of temperature-dependent regulation of PIF4 itself (Delker et al., 2014, Cell Reports; Raschke/Ibanez et al., 2015, BMC Plant Biology). As we are beginning to understand the fundamentals of thermomorphogenesis signaling, we are currently testing the validity of the gained knowledge also in crop systems. In the future, this translational research will become more and more important.
The developmental hourglass
Embryogenesis coordinates the transformation of a single fertilized egg cell into a differentiated, complex organism. Based on von Baer’s third law of embryology (1828), it has been observed that embryos of animal species from the same phylum share a developmental stage with apparent morphological similarities. Animal embryos from the same phylum often appear morphologically different in early embryogenesis, converge to a similar form during mid embryogenesis, and diverge again in late embryogenesis. This morphological pattern is known as the developmental hourglass pattern (Duboule, 1994; Raff, 1996), and the stage or period of maximum morphological conservation in mid embryogenesis is called phylotypic stage (Sander, 1983) or phylotypic period (Richardson, 1995).
Recently, several groups succeeded in providing a possible explanation for the morphological hourglass pattern in animals by observing an hourglass pattern also at the transcriptome level. Distance-based comparisons of transcriptomes of related species (Kalinka et al., 2010; Irie and Kuratani, 2011; Levin et al., 2012) or transcriptome indices based on the combination of evolutionary with transcriptomic information (= phylotranscriptomics) of a single species (Domazet-Lošo and Tautz, 2010) revealed the existence of a phylotranscriptomic hourglass pattern in different animal lineages. Although embryogenesis plays a similarly essential role in plant development, the whole concept had apparently never been addressed in plants. We were therefore interested to investigate the developmental hourglass model in the plant kingdom. In collaboration with Ivo Grosse‘s bioinformatics group at the MLU Halle we performed phylotranscriptomic analyses of Arabidopsis thaliana embryogenesis and, to our surprise, observed a ‘perfect’ hourglass shaped phylotranscriptomic pattern (Quint et al., Nature, 2012; Drost et al., 2015, Mol Biol Evol). We are currently investigating the hourglass phenomenon in post-embryonic developmental processes and believe that our findings in the plant lineage will enable us to better understand this historic enigma in both animal and plant kingdoms.
研究兴趣
论文共 88 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
James Ronald,Sarah C.L Lock, Will Claydon,Zihao Zhu,Kayla McCarthy, Elizabeth Pendlington,Ethan J. Redmond, Gina Y.W. Vong, Sanoj P. Stanislas,Seth J. Davis,Marcel Quint,Daphne Ezer
crossref(2024)
Marcel Quint,Carolin Delker,Sureshkumar Balasubramanian,Martin Balcerowicz,Jorge J. Casal,Christian Danve M. Castroverde,Meng Chen,Xuemei Chen,Ive De Smet,Christian Fankhauser,Keara A. Franklin,Karen J. Halliday,Scott Hayes,Danhua Jiang,Jae-Hoon Jung,Eirini Kaiserli,S. Vinod Kumar,Daniel Maag,Eunkyoo Oh,Chung-Mo Park,Steven Penfield,Giorgio Perrella,Salome Prat, Rodrigo S. Reis,Philip A. Wigge,Bjorn C. Willige,Martijn van Zanten
Geneticsno. 3 (2023)
Journal of Experimental Botanyno. 12 (2023): 3630-3650
biorxiv(2022)
加载更多
作者统计
#Papers: 88
#Citation: 3667
H-Index: 30
G-Index: 60
Sociability: 7
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