Using Arabidopsis to uncover interactions between phytohormone signaling pathways

利用拟南芥揭示植物激素信号通路之间的相互作用

• 批准号: 8529558
• 负责人: Lucia Strader
• 金额: $ 23.31万
• 依托单位: WASHINGTON UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8529558
• 关键词: Abscisic Acid; Affinity Chromatography; Agriculture; Arabidopsis; Area; Auxins; Binding; Biochemical; Biochemical Genetics; Blood Vessels; Cell division; Characteristics; Complement; Development; Dissection; Embryonic Development; Environment; Ethylenes; Excision; Exhibits; Fruit; Genes; Genetic Research; Genetic Transcription; Germination; Goals; Growth; Growth and Development function; Hormones; Knowledge; Learning; Lesion; MAPK Signaling Pathway Pathway; Mentors; Mitogen-Activated Protein Kinases; Molecular; Molecular Genetics; Mouse-ear Cress; Mutation; Nature; Pathway interactions; Perception; Phenotype; Phosphoric Monoester Hydrolases; Plant Growth Regulators; Plant Leaves; Plant Model; Plant Roots; Plants; Postdoctoral Fellow; Principal Investigator; Protein Biosynthesis; Protein phosphatase; Proteins; Regulation; Reporter; Repressor Proteins; Research; Resistance; Resources; Rice; Role; Saline; Seeds; Signal Pathway; Signal Transduction; Site; Soil; Specificity; Stress; Students; Testing; Time; Training; Universities; base; biological adaptation to stress; career; indoleacetic acid; insight; mutant; novel; positional cloning; research study; response; senescence; stress tolerance; tool

PROJECT SUMMARY - INTERACTION OF PHYTOHORMONE SIGNALING PATHWAYS Candidate: The candidate's long-term career goal is to become a principal investigator in an academic setting, studying the interaction networks involved in phytohormone response. During the training period, she will learn biochemical research approaches to complement her graduate applied agricultural and post- doctoral molecular genetic research. Training Environment: Rice University provides an ideal training environment because of its quality research and intimate setting. Dr. Bonnie Bartel, the mentor for this project, is a leader in Arabidopsis research. Further, she is an active mentor who devotes the majority of her time to her research and her postdocs and students. Research: The long-term goal of this project is to enhance understanding of the signaling network that connects the phytohormones auxin, abscisic acid (ABA), and ethylene. The dual-specificity protein phosphatase, IBR5, the subject of this proposal, is a novel point of interaction between auxin, ABA, and ethylene signal transduction networks. Several interconnected approaches will use IBR5 to gain greater understanding of the relationship among these phytohormones. Firstly, IBR5-interacting proteins will be identified (Aim 1); these may include substrates and regulators of the IBR5 phosphatase. Additionally, second-site ibr5 modifiers will be analyzed (Aim 2) to determine whether sensitivity to auxin, ABA, and ethylene can be separated, or if they are interconnected in inseparable ways. Identification of defective genes in these modifiers (Aim 3) will allow molecular elucidation of interactions between these phytohormone pathways. These studies will contribute to understanding of which signaling components are shared among these three pathways and which are not shared, and will identify additional nodes in the phytohormone signaling network. In addition to expanding our basic knowledge, a detailed understanding of these three phytohormones, involved in growth responses, stress tolerance, and fruit ripening, may provide insight for the eventual improvement of plants of agricultural or medicinal importance. For instance, determining how to increase stress tolerance (ABA perception) without altering growth characteristics (auxin perception) or ripening (ethylene perception) could be key to adapting plants to high stress areas (i.e., areas of low rainfall or saline soils).

项目摘要-植物激素信号通路的相互作用 候选人：候选人的长期职业目标是成为一个学术领域的首席研究员。 设置，研究参与植物激素反应的相互作用网络。在培训期间， 她将学习生物化学研究方法，以补充她的研究生应用农业和后， 分子遗传学博士 培训环境：莱斯大学提供了一个理想的培训环境，因为它的质量 研究和亲密的环境。邦尼·巴特尔博士是这个项目的导师， research.此外，她是一个积极的导师，她的大部分时间都花在她的研究和她的工作上。 博士后和学生。 研究：该项目的长期目标是加强对信令网络的理解， 连接植物激素生长素，脱落酸（阿坝）和乙烯。双特异性蛋白 磷酸酶，IBR 5，这个建议的主题，是一个新的点之间的相互作用生长素，阿坝， 乙烯信号转导网络几种相互关联的方法将使用IBR 5来获得更大的 了解这些植物激素之间的关系。首先，IBR 5相互作用蛋白将被 这些可能包括IBR 5磷酸酶的底物和调节剂。此外，本发明还 将分析第二位点ibr 5修饰剂（目标2），以确定是否对生长素、阿坝和 乙烯可以分离，或者如果它们以不可分离的方式相互连接。缺陷识别 这些修饰剂中的基因（目标3）将允许从分子上阐明这些修饰剂之间的相互作用 植物激素途径这些研究将有助于了解哪些信号成分是 在这三条路径中共享以及不共享的路径，并将识别 植物激素信号网络除了扩展我们的基础知识，详细了解 在这三种植物激素中，与生长反应、胁迫耐受性和果实成熟有关的， 为最终改进具有农业或药用重要性的植物提供见解。比如说， 确定如何在不改变生长特性（生长素）的情况下提高胁迫耐受性（阿坝感知） 感知）或成熟（乙烯感知）可能是使植物适应高胁迫区域的关键（即，地区 低降雨量或盐碱地）。

项目成果

Auxin activity: Past, present, and future.

• DOI: 10.3732/ajb.1400285
• 发表时间: 2015-02
• 期刊: American journal of botany
• 影响因子: 3
• 作者: Enders TA;Strader LC
• 通讯作者: Strader LC

Gateway-compatible tissue-specific vectors for plant transformation.

• DOI: 10.1186/s13104-015-1010-6
• 发表时间: 2015-03-03
• 期刊: BMC research notes
• 影响因子: 1.8
• 作者: Michniewicz M;Frick EM;Strader LC
• 通讯作者: Strader LC

Refining the nuclear auxin response pathway through structural biology.

• DOI: 10.1016/j.pbi.2015.05.007
• 发表时间: 2015-10
• 期刊: Current opinion in plant biology
• 影响因子: 9.5
• 作者: Korasick DA;Jez JM;Strader LC
• 通讯作者: Strader LC

A role for the root cap in root branching revealed by the non-auxin probe naxillin.

• DOI: 10.1038/nchembio.1044
• 发表时间: 2012-09
• 期刊: Nature chemical biology
• 影响因子: 14.8

A gain-of-function mutation in IAA16 confers reduced responses to auxin and abscisic acid and impedes plant growth and fertility.

IAA16的功能收益突变使对生长素和脱落酸的反应减少，并阻碍植物的生长和生育能力。

• DOI: 10.1007/s11103-012-9917-y
• 发表时间: 2012-07
• 期刊: PLANT MOLECULAR BIOLOGY
• 影响因子: 5.1
• 作者: Rinaldi, Mauro A.;Liu, James;Enders, Tara A.;Bartel, Bonnie;Strader, Lucia C.
• 通讯作者: Strader, Lucia C.