Carbon and nitrogen signaling regulate FLOWERING LOCUS C and impact flowering time in Arabidopsis

IF 6.5 1区生物学 Q1 PLANT SCIENCES

Plant Physiology Pub Date : 2024-11-12 DOI:10.1093/plphys/kiae594

Vladislav Gramma, Justyna Jadwiga Olas, Vasiliki Zacharaki, Jathish Ponnu, Magdalena Musialak-Lange, Vanessa Wahl

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引用次数: 0

Abstract

The timing of flowering in plants is modulated by both carbon (C) and nitrogen (N) signaling pathways. In a previous study, we established a pivotal role of the sucrose-signaling trehalose 6-phosphate pathway in regulating flowering under N-limited short-day conditions. In this work, we show that both wild-type Arabidopsis (Arabidopsis thaliana) plants grown under N-limited conditions and knock-down plants of TREHALOSE PHOSPHATE SYNTHASE 1 induce FLOWERING LOCUS C (FLC) expression, a well-known floral repressor associated with vernalization. When exposed to an extended period of cold, a flc mutant fails to respond to N availability and flowers at the same time under N-limited and full-nutrition conditions. Our data suggest that SUCROSE NON-FERMENTING 1 RELATED KINASE 1-dependent trehalose 6-phosphate-mediated C signaling and a mechanism downstream of N signaling (likely involving NIN-LIKE PROTEIN 7) impact the expression of FLC. Collectively, our data underscore the existence of a multi-factor regulatory system in which the C and N signaling pathways jointly govern the regulation of flowering in plants.

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碳信号和氮信号调控拟南芥的花序定位点 C 并影响其开花时间

植物的开花时间受碳（C）和氮（N）信号途径的调节。在之前的一项研究中，我们确定了蔗糖-6-磷酸三卤糖信号途径在氮限制的短日照条件下调节开花的关键作用。在这项研究中，我们发现在氮限制条件下生长的野生型拟南芥（Arabidopsis thaliana）植株和三卤糖磷酸合成酶 1 的基因敲除植株都能诱导花序抑制因子 C（FLC）的表达，FLC 是一种与春化相关的著名花序抑制因子。当暴露于较长时间的低温时，flc 突变体不能对氮的可用性做出反应，并在氮限制和全营养条件下同时开花。我们的数据表明，依赖于 6-磷酸三卤糖介导的 C 信号转导和 N 信号转导下游机制（可能涉及 NIN-LIKE PROTEIN 7）影响了 FLC 的表达。总之，我们的数据强调了多因素调控系统的存在，其中 C 信号途径和 N 信号途径共同调控植物开花。

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来源期刊

Plant Physiology 生物-植物科学

CiteScore

12.20

自引率

5.40%

发文量

535

审稿时长

2.3 months

期刊介绍： Plant Physiology® is a distinguished and highly respected journal with a rich history dating back to its establishment in 1926. It stands as a leading international publication in the field of plant biology, covering a comprehensive range of topics from the molecular and structural aspects of plant life to systems biology and ecophysiology. Recognized as the most highly cited journal in plant sciences, Plant Physiology® is a testament to its commitment to excellence and the dissemination of groundbreaking research. As the official publication of the American Society of Plant Biologists, Plant Physiology® upholds rigorous peer-review standards, ensuring that the scientific community receives the highest quality research. The journal releases 12 issues annually, providing a steady stream of new findings and insights to its readership.