scholarly journals AbHLHgene fromTamarix hispidaimproves abiotic stress tolerance by enhancing osmotic potential and decreasing reactive oxygen species accumulation

2016 ◽  
pp. tpv139 ◽  
Author(s):  
Xiaoyu Ji ◽  
Xianguang Nie ◽  
Yujia Liu ◽  
Lei Zheng ◽  
Huimin Zhao ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Osmotic Potential ◽  
Abiotic Stress Tolerance ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Reactive Oxygen Species Accumulation ◽  
Species Accumulation

Role of reactive oxygen species in the regulation of abiotic stress tolerance in legumes

2021 ◽  
pp. 217-243
Author(s):  
Ashutosh Sharma ◽  
Pooja Sharma ◽  
Rahul Kumar ◽  
Vikas Sharma ◽  
Renu Bhardwaj ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Abiotic Stress Tolerance ◽  
Reactive Oxygen ◽  
Oxygen Species

Reactive oxygen species (ROS) management in engineered plants for abiotic stress tolerance

2020 ◽  
pp. 241-262 ◽  
Author(s):  
Punam Kundu ◽  
Ritu Gill ◽  
Ashima Nehra ◽  
Krishan Kant Sharma ◽  
Mirza Hasanuzzaman ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Abiotic Stress Tolerance ◽  
Reactive Oxygen ◽  
Oxygen Species

scholarly journals Arabidopsis thaliana Trihelix Transcription factor AST1 mediates abiotic stress tolerance by binding to a novel AGAG-box and some GT motifs

2017 ◽  
Author(s):  
Hongyun Xu ◽  
Lin He ◽  
Yong Guo ◽  
Xinxin Shi ◽  
Dandan Zang ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Stress Responses ◽  
Abiotic Stress Tolerance ◽  
Light Stress ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Qrt Pcr ◽  
Helix Loop Helix

AbstractTrihelix transcription factors are characterized by containing a conserved trihelix (helix-loop-helix-loop-helix) domain that bind to GT elements required for light response, play roles in light stress, and also in abiotic stress responses. However, only few of them have been functionally characterised. In the present study, we characterized the function of AST1 (Arabidopsis SIP1 clade Trihelix1) in response to abiotic stress. AST1 shows transcriptional activation activity, and its expression is induced by osmotic and salt stress. The genes regulated by AST1 were identified using qRT-PCR and transcriptome assays. A conserved sequence highly present in the promoters of genes regulated by AST1 was identified, which is bound by AST1, and termed AGAG-box with the sequence [A/G][G/A][A/T]GAGAG. Additionally, AST1 also binds to some GT motifs including GGTAATT, TACAGT, GGTAAAT and GGTAAA, but failed in binding to GTTAC and GGTTAA. Chromatin immunoprecipitation combined with qRT-PCR analysis suggested that AST1 binds to AGAG-box and/or some GT motifs to regulate the expression of stress tolerance genes, resulting in reduced reactive oxygen species, Na+ accumulation, stomatal apertures, lipid peroxidation, cell death and water loss rate, and increased proline content and reactive oxygen species scavenging capability. These physiological changes mediated by AST1 finally improve abiotic stress tolerance.

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