Temperature Sensing in Plants

Kerbler, Sandra M.; Wigge, Philip A.

doi:10.1146/annurev-arplant-102820-102235

Cited by 36 publications

(29 citation statements)

References 154 publications

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“…Thus, identifying master temperature sensors (thermosensors) continues to be challenging. Yet, important advances have been achieved in enumerating cellular components that, at least under specific conditions, may behave like plant thermosensors (Kerbler & Wigge, 2022). A widely accepted model is that temperature fluctuations alter the fluidity of cellular membranes, subsequently modulating the structure and/or activity of membrane-localized proteins.…”

Section: Cold Thermosensing Mechanismsmentioning

confidence: 99%

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Is winter coming? Impact of the changing climate on plant responses to cold temperature

Larran

Pajoro

Qüesta

2023

Plant Cell & Environment

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Climate change is causing alterations in annual temperature regimes worldwide. Important aspects of this include the reduction of winter chilling temperatures as well as the occurrence of unpredicted frosts, both significantly affecting plant growth and yields. Recent studies advanced the knowledge of the mechanisms underlying cold responses and tolerance in the model plant Arabidopsis thaliana. However, how these cold‐responsive pathways will readjust to ongoing seasonal temperature variation caused by global warming remains an open question. In this review, we highlight the plant developmental programmes that depend on cold temperature. We focus on the molecular mechanisms that plants have evolved to adjust their development and stress responses upon exposure to cold. Covering both genetic and epigenetic aspects, we present the latest insights into how alternative splicing, noncoding RNAs and the formation of biomolecular condensates play key roles in the regulation of cold responses. We conclude by commenting on attractive targets to accelerate the breeding of increased cold tolerance, bringing up biotechnological tools that might assist in overcoming current limitations. Our aim is to guide the reflection on the current agricultural challenges imposed by a changing climate and to provide useful information for improving plant resilience to unpredictable cold regimes.

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Section: Cold Thermosensing Mechanismsmentioning

confidence: 99%

Section: How Do Plants Sense and Respond To Cold Temperatures?mentioning

confidence: 99%

Is winter coming? Impact of the changing climate on plant responses to cold temperature

Larran

Pajoro

Qüesta

2023

Plant Cell & Environment

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“…They next turned to understanding the mechanism of HSP90 effects on PIF4 and PIF5 expressions. A strong candidate was ELF3, previously shown to be a transcriptional repressor of both genes as part of the tripartite Evening Complex (EC; ELF3‐ELF4‐LUX), which is involved in the circadian system as well as photomorphogenesis and thermomorphogenesis (Nusinow et al ., 2011; Silva et al ., 2020; Kerbler & Wigge, 2023). Again, using genetics ( elf3 mutants) and HSP90 inhibitors, they found HSP90 and ELF3 are required together for PIF4/PIF5‐mediated light and temperature responsiveness of hypocotyl growth in etiolated and SD heat‐stressed seedlings.…”

Section: Figmentioning

confidence: 99%

HSP90 in morphogenesis: taking the heat and keeping the dark

Somers

2023

New Phytologist

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HSP90 in morphogenesis: taking the heat and keeping the dark Protein homeostasis (proteostasis) is essential for the proper functioning of all individual cells, as well as maintaining the correct dynamic between neighboring cells. While there are a number of mechanisms in place to achieve this, one of the most common is the Hsp70/Hsp90 molecular chaperone system (Taipale et al., 2010). HSP90 is a highly abundant and central cellular component essential to the maturation and stabilization of numerous substrate proteins (clients). These clients are often regulatory proteins involved in signaling pathways. The range of processes and types of client proteins that HSP90 regulates are many and varied, ranging from various biotic and abiotic stresses to hormone signaling and the circadian clock (Kim et al., 2011;di Donato & Geisler, 2019). For example, stem elongationthrough the action of auxin, a primary hormone involved in cell expansionindirectly requires the function of HSP90 through the HSP90-mediated stabilization of the auxin coreceptor F-box protein, TIR1 (Wang et al., 2016). However, in an article published in this issue of New Phytologist, Zeng et al. (2023; pp. 1253-1265 now report a new, specific role for HSP90 as a direct participant in the regulation of dark-grown seedling development (skotomorphogenesis) and thermomorphogenesis, through effects on ELF3 levels.

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“…To obtain an integrated view of the mechanisms regulating gene expression during heat stress, it is essential to obtain information on all these steps and the way they influence each other. Our current understanding of how plant gene expression is reprogrammed after a single heat stress event mainly concerns the gene transcription step (Kotak et al, 2007; Scharf et al, 2012; Jacob et al, 2017; Kerbler and Wigge, 2023). Briefly, upon heat stress, heat shock proteins (HSP)90/70 are redirected to unfolded proteins, allowing heat shock factor (HSF)A1 to enter the nucleus to displace histone variant H2A.Z and stimulate transcription of target genes (in cooperation with other transcription factors such as DRB2A and ABFs/AREBs).…”

Section: Introductionmentioning

confidence: 99%

Plant response to intermittent heat stress involves modulation of mRNA translation efficiency

Dannfald,

Carpentier,

Merret

et al. 2024

Preprint

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Acquired thermotolerance (also known as priming) is the ability of cells or organisms to better survive an acute heat stress if it is preceded by a milder one. In plants, acquired thermotolerance has been studied mainly at the transcriptional level, including recent descriptions of sophisticated regulatory circuits that are essential for this learning capacity. In this work, we tested the involvement of polysome-related processes (translation and cotranslational mRNA decay (CTRD)) in plant thermotolerance using two heat stress regimes with and without a priming event. We found that priming is essential to restore the general translational potential of plants shortly after acute heat stress. We observed that mRNAs not involved in heat stress suffer from a reduction in translation efficiency at high temperature, whereas heat stress-related mRNAs are translated more efficiently under the same condition. We also show that the induction of the unfolded protein response (UPR) pathway in acute heat stress is favoured by a previous priming event and that, in the absence of priming, ER-translated mRNAs become preferential targets of CTRD. Finally, we present evidence that CTRD can specifically regulate more than a thousand genes during heat stress and should be considered as an independent gene regulatory mechanism.

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Temperature Sensing in Plants

Cited by 36 publications

References 154 publications

Is winter coming? Impact of the changing climate on plant responses to cold temperature

Is winter coming? Impact of the changing climate on plant responses to cold temperature

HSP90 in morphogenesis: taking the heat and keeping the dark

Plant response to intermittent heat stress involves modulation of mRNA translation efficiency

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