scholarly journals Heat‐stress Memory is Responsible for Acquired Thermotolerance in Bangia fuscopurpurea

2019 ◽  
Vol 55 (5) ◽  
pp. 971-975 ◽  
Author(s):  
Ikuya Kishimoto ◽  
Inori Ariga ◽  
Yutaka Itabashi ◽  
Koji Mikami
Keyword(s):  
Heat Stress ◽  
Stress Memory ◽  
Acquired Thermotolerance ◽  
Bangia Fuscopurpurea

scholarly journals Plant Heat Adaptation: priming in response to heat stress

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 694 ◽  
Author(s):  
Isabel Bäurle
Keyword(s):  
Heat Stress ◽  
Abiotic Stress ◽  
Crop Yield ◽  
Normal Growth ◽  
Yield Stability ◽  
Active Process ◽  
Natural Conditions ◽  
Stress Memory ◽  
Acquired Thermotolerance ◽  
Major Threat

Abiotic stress is a major threat to crop yield stability. Plants can be primed by heat stress, which enables them to subsequently survive temperatures that are lethal to a plant in the naïve state. This is a rapid response that has been known for many years and that is highly conserved across kingdoms. Interestingly, recent studies in Arabidopsis and rice show that this thermo-priming lasts for several days at normal growth temperatures and that it is an active process that is genetically separable from the priming itself. This is referred to as maintenance of acquired thermotolerance or heat stress memory. Such a memory conceivably has adaptive advantages under natural conditions, where heat stress often is chronic or recurring. In this review, I will focus on recent advances in the mechanistic understanding of heat stress memory.

scholarly journals CSN5A Subunit of COP9 Signalosome Is Required for Resetting Transcriptional Stress Memory after Recurrent Heat Stress in Arabidopsis

Biomolecules ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 668
Author(s):  
Amit Kumar Singh ◽  
Shanmuhapreya Dhanapal ◽  
Alin Finkelshtein ◽  
Daniel A. Chamovitz
Keyword(s):  
Transcription Factors ◽  
Heat Stress ◽  
Histone Methylation ◽  
Environmental Stresses ◽  
Cop9 Signalosome ◽  
Stress Memory ◽  
Transcriptional Stress ◽  
Transcriptional Memory

In nature, plants are exposed to several environmental stresses that can be continuous or recurring. Continuous stress can be lethal, but stress after priming can increase the tolerance of a plant to better prepare for future stresses. Reports have suggested that transcription factors are involved in stress memory after recurrent stress; however, less is known about the factors that regulate the resetting of stress memory. Here, we uncovered a role for Constitutive Photomorphogenesis 5A (CSN5A) in the regulation of stress memory for resetting transcriptional memory genes (APX2 and HSP22) and H3K4me3 following recurrent heat stress. Furthermore, CSN5A is also required for the deposition of H3K4me3 following recurrent heat stress. Thus, CSN5A plays an important role in the regulation of histone methylation and transcriptional stress memory after recurrent heat stress.

scholarly journals BRUSHY1/TONSOKU/MGOUN3 is required for heat stress memory

2018 ◽  
Vol 42 (3) ◽  
pp. 771-781 ◽  
Author(s):  
Krzysztof Brzezinka ◽  
Simone Altmann ◽  
Isabel Bäurle
Keyword(s):  
Heat Stress ◽  
Stress Memory

scholarly journals AtPPRT1, an E3 Ubiquitin Ligase, Enhances the Thermotolerance in Arabidopsis

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1074
Author(s):  
Yu Liu ◽  
Shuya Xiao ◽  
Haoran Sun ◽  
Linsen Pei ◽  
Yingying Liu ◽  
...  
Keyword(s):  
Heat Stress ◽  
Ubiquitin Ligase ◽  
E3 Ubiquitin Ligase ◽  
Degradation Pathway ◽  
Vital Role ◽  
Loss Of Function ◽  
Positive Role ◽  
Heat Stress Response ◽  
Acquired Thermotolerance ◽  
Ubiquitin E3 Ligase

E3 ubiquitin ligase plays a vital role in the ubiquitin-mediated heat-related protein degradation pathway. Herein, we report that the expression of AtPPRT1, a C3HC4 zinc-finger ubiquitin E3 ligase gene, was induced by heat stress, and the β-glucuronidase (GUS) gene driven by the AtPPRT1 promoter has shown increased activity after basal and acquired thermotolerance. To further explore the function of AtPPRT1 in heat stress response (HSR), we used the atpprt1 mutant and AtPPRT1-overexpressing lines (OE2 and OE10) to expose in heat shock. In this study, the atpprt1 mutant had a lower germination and survival rate than those of Col-0 when suffered from the heat stress, whereas OEs enhanced basal and acquired thermotolerance in Arabidopsis seedlings. When compared to Col-0 and OEs, loss-of-function in AtPPRT1 resulted in lower chlorophyll retention and higher content of reactive oxygen species (ROS) after heat treatment. Moreover, the transcript levels of AtPPRT1 and several heat-related genes (AtZAT12, AtHSP21 and AtHSFA7a) were upregulated to greater extents in OEs and lower extents in atpprt1 compared to Col-0 after heat treated. Hence, we suggest that AtPPRT1 may act as a positive role in regulating the high temperature by mediating the degradation of unknown target proteins.

scholarly journals Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds

2019 ◽  
Vol 16 (6) ◽  
pp. 1043 ◽  
Author(s):  
Alphonsine Mukamuhirwa ◽  
Helena Persson Hovmalm ◽  
Hans Bolinsson ◽  
Rodomiro Ortiz ◽  
Obedi Nyamangyoku ◽  
...  
Keyword(s):  
Climate Change ◽  
Heat Stress ◽  
Temperature Stress ◽  
Quality Characteristics ◽  
Total Protein Content ◽  
Rice Cultivars ◽  
Yield Attributes ◽  
Stress Memory ◽  
Drought And Heat Stress ◽  
The Impact

Despite the likely increasing co-occurrence of drought and heat stress, not least in equatorial regions, due to climate change, little is known about the combinational effect of these stresses on rice productivity and quality. This study evaluated the impact of simultaneous drought and temperature stress on growth, grain yield, and quality characteristics of seven rice cultivars from Rwanda, grown in climate chambers. Two temperature ranges—23/26 °C night/day and 27/30 °C night/day—together with single or repeated drought treatments, were applied during various plant developmental stages. Plant development and yield were highly influenced by drought, while genotype impacted the quality characteristics. The combination of a high temperature with drought at the seedling and tillering stages resulted in zero panicles for all evaluated cultivars. The cultivar ‘Intsindagirabigega’ was most tolerant to drought, while ‘Zong geng’ was the most sensitive. A “stress memory” was recorded for ‘Mpembuke’ and ‘Ndamirabahinzi’, and these cultivars also had a high content of bioactive compounds, while ’Jyambere’ showed a high total protein content. Thus, climate change may severely impact rice production. The exploitation of genetic diversity to breed novel rice cultivars that combine drought and heat stress tolerance with high nutritional values is a must to maintain food security.

scholarly journals Heat-Stress Responses Differ among Species from Different ‘Bangia’ Clades of Bangiales (Rhodophyta)

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1733
Author(s):  
Ho Viet Khoa ◽  
Puja Kumari ◽  
Hiroko Uchida ◽  
Akio Murakami ◽  
Satoshi Shimada ◽  
...  
Keyword(s):  
Heat Stress ◽  
Stress Response ◽  
Stress Responses ◽  
Red Alga ◽  
Heat Sensitivity ◽  
Heat Stress Response ◽  
Stress Memory ◽  
Response Strategies ◽  
Heat Stress Tolerance ◽  
Bangia Atropurpurea

The red alga ‘Bangia’ sp. ESS1, a ‘Bangia’ 2 clade member, responds to heat stress via accelerated asexual reproduction and acquires thermotolerance based on heat-stress memory. However, whether these strategies are specific to ‘Bangia’ 2, especially ‘Bangia’ sp. ESS1, or whether they are employed by all ‘Bangia’ species is currently unknown. Here, we examined the heat-stress responses of ‘Bangia’ sp. ESS2, a newly identified ‘Bangia’ clade 3 member, and Bangia atropurpurea. Intrinsic thermotolerance differed among species: Whereas ‘Bangia’ sp. ESS1 survived at 30 °C for 7 days, ‘Bangia’ sp. ESS2 and B. atropurpurea did not, with B. atropurpurea showing the highest heat sensitivity. Under sublethal heat stress, the release of asexual spores was highly repressed in ‘Bangia’ sp. ESS2 and completely repressed in B. atropurpurea, whereas it was enhanced in ‘Bangia’ sp. ESS1. ‘Bangia’ sp. ESS2 failed to acquire heat-stress tolerance under sublethal heat-stress conditions, whereas the acquisition of heat tolerance by priming with sublethal high temperatures was observed in both B. atropurpurea and ‘Bangia’ sp. ESS1. Finally, unlike ‘Bangia’ sp. ESS1, neither ‘Bangia’ sp. ESS2 nor B. atropurpurea acquired heat-stress memory. These findings provide insights into the diverse heat-stress response strategies among species from different clades of ‘Bangia’.

scholarly journals Root endophyte induced plant thermotolerance by constitutive chromatin modification at heat stress memory gene loci

EMBO Reports ◽  
2021 ◽  
Author(s):  
Kirti Shekhawat ◽  
Maged M Saad ◽  
Arsheed Sheikh ◽  
Kiruthiga Mariappan ◽  
Henda Al‐Mahmoudi ◽  
...  
Keyword(s):  
Heat Stress ◽  
Chromatin Modification ◽  
Root Endophyte ◽  
Stress Memory

scholarly journals Arabidopsis FORGETTER1 mediates stress-induced chromatin memory through nucleosome remodeling

eLife ◽  
2016 ◽  
Vol 5 ◽  
Author(s):  
Krzysztof Brzezinka ◽  
Simone Altmann ◽  
Hjördis Czesnick ◽  
Philippe Nicolas ◽  
Michal Gorka ◽  
...  
Keyword(s):  
Gene Expression ◽  
Heat Stress ◽  
Nucleosome Occupancy ◽  
Promoter Regions ◽  
Nucleosome Remodeling ◽  
Chromatin Remodelers ◽  
Stress Memory ◽  
Active Memory ◽  
Nucleosome Dynamics ◽  
Sessile Organisms

Plants as sessile organisms can adapt to environmental stress to mitigate its adverse effects. As part of such adaptation they maintain an active memory of heat stress for several days that promotes a more efficient response to recurring stress. We show that this heat stress memory requires the activity of the FORGETTER1 (FGT1) locus, with fgt1 mutants displaying reduced maintenance of heat-induced gene expression. FGT1 encodes the Arabidopsis thaliana orthologue of Strawberry notch (Sno), and the protein globally associates with the promoter regions of actively expressed genes in a heat-dependent fashion. FGT1 interacts with chromatin remodelers of the SWI/SNF and ISWI families, which also display reduced heat stress memory. Genomic targets of the BRM remodeler overlap significantly with FGT1 targets. Accordingly, nucleosome dynamics at loci with altered maintenance of heat-induced expression are affected in fgt1. Together, our results suggest that by modulating nucleosome occupancy, FGT1 mediates stress-induced chromatin memory.

Respiratory burst oxidase homologue‐dependent H2O2 is essential during heat stress memory in heat sensitive tomato

2019 ◽  
Vol 258 ◽  
pp. 108777 ◽  
Author(s):  
Mintao Sun ◽  
Fangling Jiang ◽  
Rong Zhou ◽  
Junqin Wen ◽  
Shouyao Cui ◽  
...  
Keyword(s):  
Heat Stress ◽  
Respiratory Burst ◽  
Stress Memory ◽  
Respiratory Burst Oxidase ◽  
Respiratory Burst Oxidase Homologue
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