scholarly journals A major checkpoint for protein expression in Rhodobacter sphaeroides during heat stress response occurs at the level of translation

Author(s):  
Matthew McIntosh ◽  
Thorsten Köchling ◽  
Anna Latz ◽  
Jonas Kretz ◽  
Sandra Heinen ◽  
...  
2010 ◽  
Vol 192 (10) ◽  
pp. 2613-2623 ◽  
Author(s):  
Aaron M. Nuss ◽  
Jens Glaeser ◽  
Bork A. Berghoff ◽  
Gabriele Klug

ABSTRACT Organisms performing photosynthesis in the presence of oxygen have to cope with the formation of highly reactive singlet oxygen (1O2) and need to mount an adaptive response to photooxidative stress. Here we show that the alternative sigma factors RpoHI and RpoHII are both involved in the 1O2 response and in the heat stress response in Rhodobacter sphaeroides. We propose RpoHII to be the major player in the 1O2 response, whereas RpoHI is more important for the heat stress response. Mapping of the 5′ ends of RpoHII- and also RpoHI/RpoHII-dependent transcripts revealed clear differences in the −10 regions of the putative promoter sequences. By using bioinformatic tools, we extended the RpoHII regulon, which includes genes induced by 1O2 exposure. These genes encode proteins which are, e.g., involved in methionine sulfoxide reduction and in maintaining the quinone pool. Furthermore, we identified small RNAs which depend on RpoHI and RpoHII and are likely to contribute to the defense against photooxidative stress and heat stress.


2017 ◽  
Author(s):  
Xi Lan ◽  
John C. F. Hsieh ◽  
Carl J. Schmidt ◽  
Qing Zhu ◽  
Susan J. Lamont

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

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bin Huang ◽  
Zhinuo Huang ◽  
Ruifang Ma ◽  
Jialu Chen ◽  
Zhijun Zhang ◽  
...  

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.


2003 ◽  
Vol 26 (5) ◽  
pp. 701-708 ◽  
Author(s):  
Naoki Harikai ◽  
Kanji Tomogane ◽  
Mitsue Miyamoto ◽  
Keiko Shimada ◽  
Satoshi Onodera ◽  
...  

2015 ◽  
Vol 28 (1) ◽  
pp. 181-201 ◽  
Author(s):  
Naohiko Ohama ◽  
Kazuya Kusakabe ◽  
Junya Mizoi ◽  
Huimei Zhao ◽  
Satoshi Kidokoro ◽  
...  

2014 ◽  
Vol 65 (1) ◽  
pp. 297-305
Author(s):  
Angela Guidone ◽  
Eugenio Parente ◽  
Teresa Zotta ◽  
Caitriona M. Guinane ◽  
Mary C. Rea ◽  
...  

2020 ◽  
Vol 98 (4) ◽  
Author(s):  
Marcos H Rostagno

Abstract Stress is a biological adaptive response to restore homeostasis, and occurs in every animal production system, due to the multitude of stressors present in every farm. Heat stress is one of the most common environmental challenges to poultry worldwide. It has been extensively demonstrated that heat stress negatively impacts the health, welfare, and productivity of broilers and laying hens. However, basic mechanisms associated with the reported effects of heat stress are still not fully understood. The adaptive response of poultry to a heat stress situation is complex and intricate in nature, and it includes effects on the intestinal tract. This review offers an objective overview of the scientific evidence available on the effects of the heat stress response on different facets of the intestinal tract of poultry, including its physiology, integrity, immunology, and microbiota. Although a lot of knowledge has been generated, many gaps persist. The development of standardized models is crucial to be able to better compare and extrapolate results. By better understanding how the intestinal tract is affected in birds subjected to heat stress conditions, more targeted interventions can be developed and applied.


PLoS ONE ◽  
2009 ◽  
Vol 4 (11) ◽  
pp. e7719 ◽  
Author(s):  
Masaaki Adachi ◽  
Yaohua Liu ◽  
Kyoko Fujii ◽  
Stuart K. Calderwood ◽  
Akira Nakai ◽  
...  

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