Temperature-mediated regulation of flowering time in Arabidopsis thaliana

Brightbill, C. Maddie; Sung, Sibum

doi:10.1007/s42994-022-00069-2

Cited by 10 publications

(4 citation statements)

References 53 publications

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“…Compared with the extensive research on the photoperiodic regulation of the FT–FD module, the thermal regulation of this module remains less explored. Previous studies mainly focused on the regulation of FT transcription by temperature (Brightbill & Sung, 2022 ; Jin & Ahn, 2021 ), and little is known about how the FD gene responds to temperature, particularly at the protein level. Using two types of transgenic plants, we examined how the FT–FD module activity is changed under different temperature conditions.…”

Section: Resultsmentioning

confidence: 99%

“…regulation of FT transcription by temperature(Brightbill & Sung, 2022;, and little is known about how the FD gene responds to temperature, particularly at the protein level. Using two types of transgenic plants, we examined how the FT-FD module activity is changed under different temperature conditions.We first examined the temporal patterns of FT protein accumulation at different temperatures.…”

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confidence: 99%

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Analysis of temperature effects on the protein accumulation of the FT–FD module using newly generated Arabidopsis transgenic plants

Park,

Kim,

Jung

2023

Plant Direct

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Arabidopsis flowering is dependent on interactions between a component of the florigens FLOWERING LOCUS T (FT) and the basic leucine zipper (bZIP) transcription factor FD. These proteins form a complex that activates the genes required for flowering competence and integrates environmental cues, such as photoperiod and temperature. However, it remains largely unknown how FT and FD are regulated at the protein level. To address this, we created FT transgenic plants that express the N‐terminal FLAG‐tagged FT fusion protein under the control of its own promoter in ft mutant backgrounds. FT transgenic plants complemented the delayed flowering of the ft mutant and exhibited similar FT expression patterns to wild‐type Col‐0 plants in response to changes in photoperiod and temperature. Similarly, we generated FD transgenic plants in fd mutant backgrounds that express the N‐terminal MYC‐tagged FD fusion protein under the FD promoter, rescuing the late flowering phenotypes in the fd mutant. Using these transgenic plants, we investigated how temperature regulates the expression of FT and FD proteins. Temperature‐dependent changes in FT and FD protein levels are primarily regulated at the transcript level, but protein‐level temperature effects have also been observed to some extent. In addition, our examination of the expression patterns of FT and FD in different tissues revealed that similar to the spatial expression pattern of FT, FD mRNA was expressed in both the leaf and shoot apex, but FD protein was only detected in the apex, suggesting a regulatory mechanism that restricts FD protein expression in the leaf during the vegetative growth phase. These transgenic plants provided a valuable platform for investigating the role of the FT–FD module in flowering time regulation.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Analysis of temperature effects on the protein accumulation of the FT–FD module using newly generated Arabidopsis transgenic plants

Park,

Kim,

Jung

2023

Plant Direct

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“…1,2 Environmental factors like light, temperature, water, and nutrients are crucial for plant growth, especially temperature, which affects growth rate, seed germination, and flowering time. [3][4][5] The intricate interplay between epigenetic regulation and environmental cues allows plants to adapt their developmental processes to various conditions.…”

Section: Introductionmentioning

confidence: 99%

Dynamic regulation of H2A.Zub and H3K27me3 by ambient temperature in plant cell fate determination

Zhu,

Zhao,

et al. 2024

Preprint

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Crucial to plant development, ambient temperature triggers intricate mechanisms enabling adaptive responses to temperature variations. The precise coordination of chromatin modifications in shaping cell fate under diverse temperatures remains elusive. Our study, integrating comprehensive transcriptome, epigenome profiling and genetics, unveils that lower ambient temperature (16°C) restores developmental defects caused by H3K27me3 loss in PRC2 mutants by specifically depositing H2A.Zub at ectopically expressed embryonic genes, such asABI3andLEC1. This deposition leads to re-silencing of these genes and compensates for H3K27me3 depletion. PRC1-mediated H2A.Zub and PRC2-catalyzed H3K27me3 play roles in silencing transcription of these embryonic genes for post-germination development. Low temperature decelerates H2A.Z turnover at specific loci likely by attenuating the interaction between TOE1 and H2A.Z chaperone, sustaining repression of embryonic genes and alleviating requirement for PRC2-H3K27me3 at post-germination stage. Our findings offer mechanistic insights into the cooperative epigenetic layers facilitating plants adaptation to varying environmental temperatures.

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“…Low temperatures inhibit root and hypocotyl elongation, adult plant morphogenesis, and initiation of floral development (Ding et al 2019(Ding et al , 2020Ding and Yang 2022). Warm temperatures (below the heat stress range) result in plant thermomorphogenesis, showing dramatically elongated roots, hypocotyls, and petioles, as well as early flowering and accelerated leaf senescence (Casal and Balasubramanian 2019;Brightbill and Sung 2022;Han et al 2022). Cellular membranes, calcium (Ca 2+ ) channels, and rice CHILLING TOLERANCE DIVERGENCE 1 (COLD1) are responsible for low temperature sensing (Ma et al 2015;Guo et al 2018;Zhang et al 2019;Ding and Yang 2022).…”

Section: Introductionmentioning

confidence: 99%

PIFs- and COP1-HY5-mediated temperature signaling in higher plants

et al. 2022

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Plants have to cope with the surrounding changing environmental stimuli to optimize their physiological and developmental response throughout their entire life cycle. Light and temperature are two critical environmental cues that fluctuate greatly during day-night cycles and seasonal changes. These two external signals coordinately control the plant growth and development. Distinct spectrum of light signals are perceived by a group of wavelength-specific photoreceptors in plants. PIFs and COP1-HY5 are two predominant signaling hubs that control the expression of a large number of light-responsive genes and subsequent light-mediated development in plants. In parallel, plants also transmit low or warm temperature signals to these two regulatory modules that precisely modulate the responsiveness of low or warm temperatures. The core component of circadian clock ELF3 integrates signals from light and warm temperatures to regulate physiological and developmental processes in plants. In this review, we summarize and discuss recent advances and progresses on PIFs-, COP1-HY5- and ELF3-mediated light, low or warm temperature signaling, and highlight emerging insights regarding the interactions between light and low or warm temperature signal transduction pathways in the control of plant growth.

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Temperature-mediated regulation of flowering time in Arabidopsis thaliana

Cited by 10 publications

References 53 publications

Analysis of temperature effects on the protein accumulation of the FT–FD module using newly generated Arabidopsis transgenic plants

Analysis of temperature effects on the protein accumulation of the FT–FD module using newly generated Arabidopsis transgenic plants

Dynamic regulation of H2A.Zub and H3K27me3 by ambient temperature in plant cell fate determination

PIFs- and COP1-HY5-mediated temperature signaling in higher plants

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