The intersection between circadian and heat-responsive regulatory networks controls plant responses to increasing temperatures

Laosuntisuk, Kanjana; Doherty, Colleen J.

doi:10.1042/bst20190572

Cited by 6 publications

(4 citation statements)

References 151 publications

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“…In a heat stress environment, principal regulators of acquired thermotolerance, like HSFA2, are expressed throughout the day. In contrast, downstream genes such as HSP21, APX2, and HSFA32 tend to be highly induced during dawn than evening [ 94 ]. These genes seem to exhibit readiness in the morning to mitigate potential damage from increased light and temperature.…”

Section: Discussionmentioning

confidence: 99%

Comparative proteomics in tall fescue to reveal underlying mechanisms for improving Photosystem II thermotolerance during heat stress memory

Wang,

et al. 2024

BMC Genomics

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Background The escalating impacts of global warming intensify the detrimental effects of heat stress on crop growth and yield. Among the earliest and most vulnerable sites of damage is Photosystem II (PSII). Plants exposed to recurring high temperatures develop heat stress memory, a phenomenon that enables them to retain information from previous stress events to better cope with subsequent one. Understanding the components and regulatory networks associated with heat stress memory is crucial for the development of heat-resistant crops. Results Physiological assays revealed that heat priming (HP) enabled tall fescue to possess higher Photosystem II photochemical activity when subjected to trigger stress. To investigate the underlying mechanisms of heat stress memory, we performed comparative proteomic analyses on tall fescue leaves at S0 (control), R4 (primed), and S5 (triggering), using an integrated approach of Tandem Mass Tag (TMT) labeling and Liquid Chromatography-Mass Spectrometry. A total of 3,851 proteins were detected, with quantitative information available for 3,835 proteins. Among these, we identified 1,423 differentially abundant proteins (DAPs), including 526 proteins that were classified as Heat Stress Memory Proteins (HSMPs). GO and KEGG enrichment analyses revealed that the HSMPs were primarily associated with the “autophagy” in R4 and with “PSII repair”, “HSP binding”, and “peptidase activity” in S5. Notably, we identified 7 chloroplast-localized HSMPs (HSP21, DJC77, EGY3, LHCA4, LQY1, PSBR and DEGP8, R4/S0 > 1.2, S5/S0 > 1.2), which were considered to be effectors linked to PSII heat stress memory, predominantly in cluster 4. Protein-protein interaction (PPI) analysis indicated that the ubiquitin-proteasome system, with key nodes at UPL3, RAD23b, and UCH3, might play a role in the selective retention of memory effectors in the R4 stage. Furthermore, we conducted RT-qPCR validation on 12 genes, and the results showed that in comparison to the S5 stage, the R4 stage exhibited reduced consistency between transcript and protein levels, providing additional evidence for post-transcriptional regulation in R4. Conclusions These findings provide valuable insights into the establishment of heat stress memory under recurring high-temperature episodes and offer a conceptual framework for breeding thermotolerant crops with improved PSII functionality.

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Section: Discussionmentioning

confidence: 99%

Comparative proteomics in tall fescue to reveal underlying mechanisms for improving Photosystem II thermotolerance during heat stress memory

Wang,

et al. 2024

BMC Genomics

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“…CCA1, LHY, and RVE4/RVE8 bind to the EE motif in the promoters of CBFs/DREB1s repressing the expression under normal temperatures (32,75). Several HSFs are targeted by the core clock proteins based on ChIP-seq results (83) and exhibit rhythmic expression across the time of day (50). Likewise, increased temperature regulates circadian genes (83).…”

Section: 13mentioning

confidence: 99%

“…Several HSFs are targeted by the core clock proteins based on ChIP-seq results (83) and exhibit rhythmic expression across the time of day (50). Likewise, increased temperature regulates circadian genes (83). For example, high temperatures induced RVE4 and RVE8, and the rve4/rve8 mutant showed reduced basal thermotolerance (85).…”

Section: 13mentioning

confidence: 99%

The Game of Timing: Circadian Rhythms Intersect with Changing Environments

Laosuntisuk

Elorriaga

Doherty

2023

Annu. Rev. Plant Biol.

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Recurring patterns are an integral part of life on Earth. Through evolution or breeding, plants have acquired systems that coordinate with the cyclic patterns driven by Earth's movement through space. The biosystem responses to these physical rhythms result in biological cycles of daily and seasonal activity that feed back into the physical cycles. Signaling networks to coordinate growth and molecular activities with these persistent cycles have been integrated into plant biochemistry. The plant circadian clock is the coordinator of this complex, multiscale, temporal schedule. However, we have detailed knowledge of the circadian clock components and functions in only a few species under controlled conditions. We are just beginning to understand how the clock functions in real-world conditions. This review examines what we know about the circadian clock in diverse plant species, the challenges with extrapolating data from controlled environments, and the need to anticipate how plants will respond to climate change. Expected final online publication date for the Annual Review of Plant Biology, Volume 74 is May 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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“…CCA1 and LHY also inhibit the expression of other evening genes such as GIGANTEA ( GI ), LUX ARRHYTHMO ( LUX ), EARLY FLOWERING 3 ( ELF3 ), and ELF4 . 8 …”

Section: The Core Oscillatormentioning

confidence: 99%

Environmental F actors coordinate circadian clock function and rhythm to regulate plant development

Zhang,

Ma,

Zhang

et al. 2023

Plant Signaling & Behavior

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Changes in the external environment necessitate plant growth plasticity, with environmental signals such as light, temperature, and humidity regulating growth and development. The plant circadian clock is a biological time keeper that can be “reset” to adjust internal time to changes in the external environment. Exploring the regulatory mechanisms behind plant acclimation to environmental factors is important for understanding how plant growth and development are shaped and for boosting agricultural production. In this review, we summarize recent insights into the coordinated regulation of plant growth and development by environmental signals and the circadian clock, further discussing the potential of this knowledge.

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The intersection between circadian and heat-responsive regulatory networks controls plant responses to increasing temperatures

Cited by 6 publications

References 151 publications

Comparative proteomics in tall fescue to reveal underlying mechanisms for improving Photosystem II thermotolerance during heat stress memory

Comparative proteomics in tall fescue to reveal underlying mechanisms for improving Photosystem II thermotolerance during heat stress memory

The Game of Timing: Circadian Rhythms Intersect with Changing Environments

Environmental F actors coordinate circadian clock function and rhythm to regulate plant development

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