The Roles of Circadian Clock Genes in Plant Temperature Stress Responses

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(2), С. 918 - 918

Опубликована: Янв. 11, 2024

Plants monitor day length and memorize changes in temperature signals throughout the day, creating circadian rhythms that support timely control of physiological metabolic processes. The

Язык: Английский

---

A warm temperature-released negative feedback loop fine-tunes PIF4-mediated thermomorphogenesis in Arabidopsis

Plant Communications, Год журнала: 2024, Номер 5(5), С. 100833 - 100833

Опубликована: Фев. 7, 2024

Plants can sense temperature changes and adjust their growth accordingly. In Arabidopsis, high ambient temperatures stimulate stem elongation by activating a key thermoresponsive regulator, PHYTOCHROME INTERACTING FACTOR 4 (PIF4). Here, we show that warmth promotes the nighttime transcription of GI, which is necessary for temperature-induced TOC1. Genetic analyses suggest GI prevents excessive inhibiting PIF4, with this regulatory mechanism being partially reliant on repressed ELF3 HY5, concurrently inhibit PIF4 expression activity. Temperature elevation causes deactivation or degradation leading to activation relief transcriptional repression at temperatures. This allows further activate in response elevated turn, inhibits establishing negative feedback loop fine-tunes addition, demonstrate ELF3, regulate modulating enrichment histone variant H2A.Z locus. Together, our findings thermal release finely adjusts plant thermomorphogenesis.

Язык: Английский

---

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

BMC Genomics, Год журнала: 2024, Номер 25(1)

Опубликована: Июль 9, 2024

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

Язык: Английский

---

How Do Arabidopsis Seedlings Sense and React to Increasing Ambient Temperatures?

Plants, Год журнала: 2025, Номер 14(2), С. 248 - 248

Опубликована: Янв. 16, 2025

Plants respond to higher ambient temperatures by modifying their growth rate and habitus. This review aims summarize the accumulated knowledge obtained with Arabidopsis seedlings grown at normal elevated temperatures. Thermomorphogenesis in shoot root is overviewed separately, since experiments indicate differences key aspects of thermomorphogenesis two organs. includes variances thermosensors transcription factors, as well predominance cell elongation or division, respectively, even though auxin plays a role regulating this process both Recent findings also highlight meristems suggest that cycle inhibitor RETINOBLASTOMA-RELATED protein may balance division increased

Язык: Английский

---

Response of different cotton genotypes to salt stress and re-watering

BMC Plant Biology, Год журнала: 2025, Номер 25(1)

Опубликована: Май 5, 2025

Abstract Background Cotton is a vital economic crop and reserve material pioneer planted on saline-alkaline soil. Improving the tolerance of cotton to saline alkaline environments particularly important. Results Salt-tolerant salt-sensitive plants at three-leaf stage were subjected 200 mM NaCl stress treatment, thereafter, microstructural observations beside physiological biochemical analyses performed leaves 0 h (CK), 48 (NaCl) re-watering (RW) for h. Salt altered in ST SS ( p < 0.05). After re-watering, recovered fully, while sustained permanent oxidative structural damage, indicating distinct salt tolerance. Transcriptome analysis was under conditions. KEGG revealed that response its adaptation may be related major protein families such as photosynthesis (ko 00195), photosynthesis-antenna 00196), plant hormone signal transduction 04075), starch sucrose metabolism 00500), porphyrin chlorophyll 00860). A gray coexpression module associated with restoration enriched according WGCNA. Conclusions did not only affect levels but also induced changes cells tissues. Re-watering relatively effective stabilizing parameters, well leaf microstructure, stress. WGCNA modules recovery stress, screening pivotal genes five critical hubs, namely, GH_A01G1528 , GH_A08G2688 GH_D08G2683 GH_D01G1620 GH_A10G0617 . Overall, our findings can provide new insights into enhancing exploring cotton,including genetic resources using those potential responsive genes. This study provides theoretical basis further exploration molecular mechanism breeding salt-tolerant cotton.

Язык: Английский

---

Multi-regulated GDP-l-galactose phosphorylase calls the tune in ascorbate biosynthesis

Journal of Experimental Botany, Год журнала: 2024, Номер 75(9), С. 2631 - 2643

Опубликована: Фев. 13, 2024

Abstract Ascorbate is involved in numerous vital processes, particular response to abiotic but also biotic stresses whose frequency and amplitude increase with climate change. levels vary greatly depending on species, tissues, or stages of development, stress. Since its discovery, the ascorbate biosynthetic pathway has been intensely studied it appears that GDP-l-galactose phosphorylase (GGP) enzyme greatest role control biosynthesis. Like other enzymes this pathway, expression induced by various environmental developmental factors. Although mRNAs encoding are among most abundant transcriptome, protein only present very small quantities. In fact, GGP translation repressed a negative feedback mechanism involving open reading frame located upstream coding sequence (uORF). Moreover, activity inhibited PAS/LOV type photoreceptor, action which counteracted blue light. Consequently, multi-level regulation would allow fine synthesis. Indeed, experiments varying have shown plays central This new understanding will be useful for developing varieties adapted future conditions.

Язык: Английский

---

GmCOL4-GmZTL1 interaction co-regulates GmSBH1 to improve seed deterioration under high temperature and humidity stress and affect leaf development

Plant Cell Tissue and Organ Culture (PCTOC), Год журнала: 2024, Номер 158(3)

Опубликована: Сен. 1, 2024

Язык: Английский

---

Expression Analysis and Interaction Protein Screening of CoZTL in Camellia oleifera Abel

Horticulturae, Год журнала: 2023, Номер 9(7), С. 833 - 833

Опубликована: Июль 21, 2023

Camellia oleifera Abel., which produces fruits of high comprehensive utilization value, is an important woody oil tree in China. ZEITLUPE (ZTL) a blue light receptor and clock component protein that involved various physiological biochemical processes. However, the expression pattern function C. ZTL (CoZTL) remain unclear. In this study, coding sequence CoZTL gene was isolated explored using bioinformatics analyses heterologous techniques. The results showed highly conserved during evolution on same branch evolutionary as proteins from Ipomoea nil Nicotiana attenuata. mainly expressed fruit shells stems oleifera, its level fluctuated greatly flower bud development. Transgenic CoZTL-overexpressing Arabidopsis plants delayed flowering under long-day conditions well light-dependent promotion hypocotyl elongation. Furthermore, yeast two-hybrid library screening revealed seven (CoAAT, Coβ-GAL, CoLAT52-like, CoCAR4-like, CoAO, CoUQCC1, CoADF 2) interacted with CoZTL. Our indicate plays role growth.

Язык: Английский

---

Regulation of Temperature Stress Responses in Plants through Circadian Clock Genes

Trends in Agriculture & Life Sciences, Год журнала: 2023, Номер 61, С. 1 - 11

Опубликована: Дек. 1, 2023

Plant growth and development are widely affected by ambient temperature conditions. Extreme temperatures cause widespread crop losses worldwide severely limit the amount of land available for agricultural purposes. Thus, it is urgent to develop crops that resistant stress along with other abiotic stresses. Plants memorize changes signals during a day day-length, creating circadian rhythms, which can timely control physiological, metabolic processes. However, at same time, they insensitive preserve rhythms maintain survival(temperature compensation). As recent studies have reported clock genes plant responses temperature, attempts acquire resistance stresses using in getting more attention. For example, The DEHYDRATION-RESPONSE ELEMENT-BINDING PROTEIN 1/C-REPEAT BINDING FACTOR (DREB1/CBFs) transcription factors known as master regulators transcriptional regulatory network acquisition cold tolerance. In addition, plants adapt high through thermomorphogenesis, PHYTOCHROME INTERACTING FACTOR 4 (PIF4 ) factor involved. Even day, expression DREB1 PIF4 varies over low show diurnal cycle. Recent suggested that, central oscillator CIRCADIAN CLOCK ASSOCIATED 1/LATE ELONGATED HYPOCOTYL (CCA1/LHY PSEUDO-RESPONSE REGULATOR5/7/9 (PRR5/7/9) EVENING COMPLEX (EC REVEILLE4/REVEILLE8 (REV4/REV8) were involved pathway signaling factor, regulation thermomorphogenesis gene. Another oscillator, TIMING OF CAB EXPRESSION 1 (TOC1), protein ZEITLUPE (ZTL) also revealed be this review, we would like introduce rhythm related response plants, will used establish strategies survive rapidly changing global climate.

Язык: Английский

---

GmCOL4-GmZTL1 interaction co-regulates GmSBH1 to improve seed deterioration under high temperature and humidity stress and affect leaf growth and development

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Май 10, 2024

BBX transcription factors have a transcriptional regulatory role in response to light, circadian cues, and brassinosteroid-light crosstalk signaling. However, the functions of soybean resistance seed deterioration not been shown. In our previous study, gene GmSBH1 HSE cis-element promoter were found high temperature humidity (HTH) stress, respectively. GmCOL4 was candidate protein, which bound cis-element. present GmCOL4 isolated characterized. Subcellular localization activation assays showed that nuclear protein with function. The BBOX2 domain play an obvious activity GmCOL4. Furthermore, interacted GmZTL1 confirmed in vivo vitro. GmZTL1 presented different expression patterns among diverse tissues synergistically involved HTH stress developing seeds, Overexpression could alter tobacco phenotypes enhance tolerance under Based on these results, regulation network conjectured, interacts co-regulate via directly binding cis-element, thereby enhancing affecting leaf growth development.

Язык: Английский

---