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 Specific microRNAs Regulate Heat Stress Responses in Caenorhabditis elegans

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Camilla Nehammer ◽  
Agnieszka Podolska ◽  
Sebastian D. Mackowiak ◽  
Konstantinos Kagias ◽  
Roger Pocock
Keyword(s):  
Heat Stress ◽  
Caenorhabditis Elegans ◽  
Stress Response ◽  
Stress Responses ◽  
Posttranscriptional Regulation ◽  
Transcriptional Control ◽  
Heat Stress Response ◽  
C Elegans ◽  
Additional Layer ◽  
Sense And Respond

Abstract The ability of animals to sense and respond to elevated temperature is essential for survival. Transcriptional control of the heat stress response has been much studied, whereas its posttranscriptional regulation by microRNAs (miRNAs) is not well understood. Here we analyzed the miRNA response to heat stress in Caenorhabditis elegans and show that a discrete subset of miRNAs is thermoregulated. Using in-depth phenotypic analyses of miRNA deletion mutant strains we reveal multiple developmental and post-developmental survival and behavioral functions for specific miRNAs during heat stress. We have identified additional functions for already known players (mir-71 and mir-239) as well as identifying mir-80 and the mir-229 mir-64-66 cluster as important regulators of the heat stress response in C. elegans. These findings uncover an additional layer of complexity to the regulation of stress signaling that enables animals to robustly respond to the changing environment.

scholarly journals bZIP17 regulates heat stress tolerance at reproductive stage in Arabidopsis

aBIOTECH ◽  
2021 ◽  
Author(s):  
Juan Gao ◽  
Mei-Jing Wang ◽  
Jing-Jing Wang ◽  
Hai-Ping Lu ◽  
Jian-Xiang Liu
Keyword(s):  
Heat Stress ◽  
Stress Responses ◽  
High Throughput Sequencing ◽  
Reproductive Stage ◽  
Heat Stress Response ◽  
Unfolded Protein ◽  
Heat Stress Tolerance ◽  
The Unfolded Protein Response ◽  
Protein Response

AbstractHigh temperature elicits a well-conserved response called the unfolded protein response (UPR) to bring protein homeostasis in the endoplasmic reticulum (ER). Two key UPR regulators bZIP28 and bZIP60 have been shown to be essential for maintaining fertility under heat stress conditions in Arabidopsis, however, the function of transcriptional activator bZIP17, a paralog of bZIP28, in heat stress response at reproductive stage is not reported. Here we found that bzip17 mutant plants were sensitive to heat stress in terms of silique length and fertility comparing to that of wildtype (WT) Arabidopsis plants, and transcriptomic analysis showed that 1380 genes were specifically up-regulated and 493 genes were specifically down-regulated by heat stress in the flowers of WT plants comparing to that in bzip17 mutant plants. These bZIP17-dependent up-regulated genes were enriched in responses to abiotic stresses such as water deprivation and salt stress. Further chromatin immuno-precipitation coupled with high-throughput sequencing (ChIP-Seq) uncovered 1645 genes that were direct targets of bZIP17 in MYC-bZIP17 expressing seedlings subjected to heat stress. Among these 1645 genes, ERSE-II cis-element was enriched in the binding peaks of their promoters, and the up-regulation of 113 genes by heat stress in flowers was dependent on bZIP17. Our results revealed direct targets of bZIP17 in flowers during heat stress responses and demonstrated the important role of bZIP17 in maintaining fertility upon heat stress in plants.

scholarly journals Heat Stress Responses and Thermotolerance in Maize

2021 ◽  
Vol 22 (2) ◽  
pp. 948
Author(s):  
Zhaoxia Li ◽  
Stephen H. Howell
Keyword(s):  
Transcription Factors ◽  
Heat Stress ◽  
Stress Response ◽  
Heat Shock ◽  
Stress Responses ◽  
Rna Splicing ◽  
Optimal Growth ◽  
Heat Stress Response ◽  
Genes Encoding ◽  
Heat Shock Responses

High temperatures causing heat stress disturb cellular homeostasis and impede growth and development in plants. Extensive agricultural losses are attributed to heat stress, often in combination with other stresses. Plants have evolved a variety of responses to heat stress to minimize damage and to protect themselves from further stress. A narrow temperature window separates growth from heat stress, and the range of temperatures conferring optimal growth often overlap with those producing heat stress. Heat stress induces a cytoplasmic heat stress response (HSR) in which heat shock transcription factors (HSFs) activate a constellation of genes encoding heat shock proteins (HSPs). Heat stress also induces the endoplasmic reticulum (ER)-localized unfolded protein response (UPR), which activates transcription factors that upregulate a different family of stress response genes. Heat stress also activates hormone responses and alternative RNA splicing, all of which may contribute to thermotolerance. Heat stress is often studied by subjecting plants to step increases in temperatures; however, more recent studies have demonstrated that heat shock responses occur under simulated field conditions in which temperatures are slowly ramped up to more moderate temperatures. Heat stress responses, assessed at a molecular level, could be used as traits for plant breeders to select for thermotolerance.

scholarly journals The plant MBF1 protein family: a bridge between stress and transcription

2020 ◽  
Vol 71 (6) ◽  
pp. 1782-1791 ◽  
Author(s):  
Fabiola Jaimes-Miranda ◽  
Ricardo A Chávez Montes
Keyword(s):  
Transcription Factors ◽  
Heat Stress ◽  
Abiotic Stress ◽  
Stress Response ◽  
Stress Responses ◽  
Protein Family ◽  
Molecular Function ◽  
Developmental Processes ◽  
Heat Stress Response ◽  
Amount Of Information

Abstract The Multiprotein Bridging Factor 1 (MBF1) proteins are transcription co-factors whose molecular function is to form a bridge between transcription factors and the basal machinery of transcription. MBF1s are present in most archaea and all eukaryotes, and numerous reports show that they are involved in developmental processes and in stress responses. In this review we summarize almost three decades of research on the plant MBF1 family, which has mainly focused on their role in abiotic stress responses, in particular the heat stress response. However, despite the amount of information available, there are still many questions that remain about how plant MBF1 genes, transcripts, and proteins respond to stress, and how they in turn modulate stress response transcriptional pathways.

Transcriptomic analysis of the heat-stress response in Boechera depauperata and Arabidopsis reveals a distinct and unusual heat-stress response in Boechera

Botany ◽  
2020 ◽  
Vol 98 (10) ◽  
pp. 589-602
Author(s):  
Ian Pierce ◽  
Gillian Halter ◽  
Elizabeth R. Waters
Keyword(s):  
Heat Stress ◽  
Stress Response ◽  
High Temperatures ◽  
Stress Responses ◽  
Native Plant ◽  
Heat Stress Response ◽  
Native Plant Species ◽  
Stress Genes ◽  
Unfolded Protein ◽  
Large Genus

Global surface temperatures are expected to rise throughout the 21st century, and negatively impact plant growth and reproduction. Thus, it is imperative that we deepen our understanding of plant thermotolerance. The examination of native plant species that have evolved tolerance to high temperatures can provide crucial information on how plants can adapt to climate change. Boechera (Brassicaceae), a large genus that is native to North America, is highly thermotolerant, and can maintain photosynthetic activity at high temperatures. Here we report results of transcriptomic studies that seek to reveal possible thermotolerance mechanisms in B. depauperata (A.Nelson & P.B.Kenn.) Windham & Al-Shehbaz. Analysis of RNA-seq datasets from heat stressed B. depauperata and Arabidopsis thaliana (L.) Heynh. plants identified significant differences in how each of these species responds to identical heat stress conditions. The most highly upregulated heat-stress genes in A. thaliana includes the well-characterized heat-shock genes. In contrast, the Boechera heat-stress response is composed of: novel genes that lack orthologs in other genomes; genes coding for proteins of uncharacterized function; and genes coding for proteins associated with the unfolded protein and endoplasmic reticulum stress responses. In addition, genes that are protective of photosynthetic capacity are also differentially upregulated in B. depauperata.

scholarly journals A Heat Stress Responsive NAC Transcription Factor Heterodimer Plays Key Roles in Rice Grain Filling

2020 ◽  
Author(s):  
Ye Ren ◽  
Zhouquan Huang ◽  
Hao Jiang ◽  
Zhuo Wang ◽  
Fengsheng Wu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Transcription Factors ◽  
Heat Stress ◽  
Stress Response ◽  
Stress Responses ◽  
Transcriptional Regulatory Network ◽  
Grain Filling ◽  
Nac Transcription Factor ◽  
Rice Grain ◽  
Heat Stress Response

AbstractHigh temperature often leads to the failure of grain filling in rice (Oryza sativa) to cause yield loss, while the mechanism is not well elucidated yet. Here, we report that two seed-specific NAM/ATAF/CUC domain transcription factors, ONAC127 and ONAC129, are responsive to heat stress and involved in the grain filling process of rice. ONAC127 and ONAC129 are dominantly expressed in the pericarp and can form a heterodimer during rice grain filling. CRISPR/Cas9 induced mutants and overexpression lines were then generated to investigate the functions of these two transcription factors. Interestingly, both knock-out and overexpression plants showed incomplete grain filling and shrunken grains, which became more severe under heat stress. Transcriptome analysis revealed that ONAC127 and ONAC129 mainly regulate stimulus response and nutrient transport. ChIP-seq analysis identified that the direct targets of ONAC127 and ONAC129 in developing rice seeds include monosaccharide transporter OsMST6, sugar transporter OsSWEET4, calmodulin-like protein OsMSR2 and AP2/ERF factor OsEATB. These results suggest that ONAC127 and ONAC129 may regulate grain filling through affecting sugar transportation and abiotic stress responses. Overall, this study demonstrates a transcriptional regulatory network involving ONAC127 and ONAC129 and coordinating multiple pathways to modulate seed development and heat stress response at rice reproductive stage.HighlightA NAC transcription factor heterodimer plays vital roles in heat stress response and sugar transportation at rice grain filling stage.

Single Gene Consistently Associated with Heat Stress Response in Three Distinct Chicken Lines

2017 ◽  
Author(s):  
Xi Lan ◽  
John C. F. Hsieh ◽  
Carl J. Schmidt ◽  
Qing Zhu ◽  
Susan J. Lamont
Keyword(s):  
Heat Stress ◽  
Stress Response ◽  
Single Gene ◽  
Heat Stress Response

The Heat Stress Response and Diabetes: More Room for Mitochondrial Implication

2016 ◽  
Vol 22 (18) ◽  
pp. 2619-2639 ◽  
Author(s):  
Biljana Miova ◽  
Maja Dimitrovska ◽  
Suzana Dinevska-Kjovkarovska ◽  
Juan V. Esplugues ◽  
Nadezda Apostolova
Keyword(s):  
Heat Stress ◽  
Stress Response ◽  
Heat Stress Response

scholarly journals Genome-wide identification and analysis of the heat shock transcription factor family in moso bamboo (Phyllostachys edulis)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bin Huang ◽  
Zhinuo Huang ◽  
Ruifang Ma ◽  
Jialu Chen ◽  
Zhijun Zhang ◽  
...  
Keyword(s):  
Heat Stress ◽  
Stress Response ◽  
Heat Shock ◽  
Gene Family ◽  
Regulatory Elements ◽  
Moso Bamboo ◽  
Naphthalene Acetic Acid ◽  
Plant Responses ◽  
Heat Stress Response ◽  
Regulatory Pathways

AbstractHeat shock transcription factors (HSFs) are central elements in the regulatory network that controls plant heat stress response. They are involved in multiple transcriptional regulatory pathways and play important roles in heat stress signaling and responses to a variety of other stresses. We identified 41 members of the HSF gene family in moso bamboo, which were distributed non-uniformly across its 19 chromosomes. Phylogenetic analysis showed that the moso bamboo HSF genes could be divided into three major subfamilies; HSFs from the same subfamily shared relatively conserved gene structures and sequences and encoded similar amino acids. All HSF genes contained HSF signature domains. Subcellular localization prediction indicated that about 80% of the HSF proteins were located in the nucleus, consistent with the results of GO enrichment analysis. A large number of stress response–associated cis-regulatory elements were identified in the HSF upstream promoter sequences. Synteny analysis indicated that the HSFs in the moso bamboo genome had greater collinearity with those of rice and maize than with those of Arabidopsis and pepper. Numerous segmental duplicates were found in the moso bamboo HSF gene family. Transcriptome data indicated that the expression of a number of PeHsfs differed in response to exogenous gibberellin (GA) and naphthalene acetic acid (NAA). A number of HSF genes were highly expressed in the panicles and in young shoots, suggesting that they may have functions in reproductive growth and the early development of rapidly-growing shoots. This study provides fundamental information on members of the bamboo HSF gene family and lays a foundation for further study of their biological functions in the regulation of plant responses to adversity.

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