Transcription factors in abiotic stress tolerance

AbstractChenopodium quinoa Willd. (quinoa) is a pseudocereal with high nutritional value and relatively high tolerance to several abiotic stresses, including water deficiency and salt stress, making it a suitable plant for the study of mechanisms of abiotic stress tolerance. NAC (NAM, ATAF and CUC) transcription factors are involved in a range of plant developmental processes and in the response of plants to biotic and abiotic stresses. In the present study, we perform a genome-wide comprehensive analysis of the NAC transcription factor gene family in quinoa. In total, we identified 107 quinoa NAC transcription factor genes, distributed equally between sub-genomes A and B. They are phylogenetically clustered into two major groups and 18 subgroups. Almost 75% of the identified CqNAC genes were duplicated two to seven times and the remaining 25% of the CqNAC genes were found as a single copy. We analysed the transcriptional responses of the identified quinoa NAC TF genes in response to various abiotic stresses. The transcriptomic data revealed 28 stress responsive CqNAC genes, where their expression significantly changed in response to one or more abiotic stresses, including salt, water deficiency, heat and phosphate starvation. Among these stress responsive NACs, some were previously known to be stress responsive in other species, indicating their potentially conserved function in response to abiotic stress across plant species. Six genes were differentially expressed specifically in response to phosphate starvation but not to other stresses, and these genes may play a role in controlling plant responses to phosphate deficiency. These results provide insights into quinoa NACs that could be used in the future for genetic engineering or molecular breeding.

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The Role of Stress-Responsive Transcription Factors in Modulating Abiotic Stress Tolerance in Plants

Agronomy ◽

10.3390/agronomy10060788 ◽

2020 ◽

Vol 10 (6) ◽

pp. 788 ◽

Cited By ~ 4

Author(s):

Youngdae Yoon ◽

Deok Hyun Seo ◽

Hoyoon Shin ◽

Hui Jin Kim ◽

Chul Min Kim ◽

...

Keyword(s):

Transcription Factors ◽

Abiotic Stress ◽

Stress Tolerance ◽

Stress Responses ◽

Abiotic Stresses ◽

Crop Production ◽

Global Climate ◽

Abiotic Stress Tolerance ◽

Plant Responses ◽

Plant Tolerance

Abiotic stresses, such as drought, high temperature, and salinity, affect plant growth and productivity. Furthermore, global climate change may increase the frequency and severity of abiotic stresses, suggesting that development of varieties with improved stress tolerance is critical for future sustainable crop production. Improving stress tolerance requires a detailed understanding of the hormone signaling and transcriptional pathways involved in stress responses. Abscisic acid (ABA) and jasmonic acid (JA) are key stress-response hormones in plants, and some stress-responsive transcription factors such as ABFs and MYCs function as direct components of ABA and JA signaling, playing a pivotal role in plant tolerance to abiotic stress. In addition, extensive studies have identified other stress-responsive transcription factors belonging to the NAC, AP2/ERF, MYB, and WRKY families that mediate plant response and tolerance to abiotic stress. These suggest that transcriptional regulation of stress-responsive genes is an essential step to determine the mechanisms underlying plant stress responses and tolerance to abiotic stress, and that these transcription factors may be important targets for development of crops with enhanced abiotic stress tolerance. In this review, we briefly describe the mechanisms underlying plant abiotic stress responses, focusing on ABA and JA metabolism and signaling pathways. We then summarize the diverse array of transcription factors involved in plant responses to abiotic stress, while noting their potential applications for improvement of stress tolerance.

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Recent Advances in Utilizing Transcription Factors to Improve Plant Abiotic Stress Tolerance by Transgenic Technology

Frontiers in Plant Science ◽

10.3389/fpls.2016.00067 ◽

2016 ◽

Vol 7 ◽

Cited By ~ 76

Author(s):

Hongyan Wang ◽

Honglei Wang ◽

Hongbo Shao ◽

Xiaoli Tang

Keyword(s):

Transcription Factors ◽

Abiotic Stress ◽

Stress Tolerance ◽

Abiotic Stress Tolerance ◽

Transgenic Technology ◽

Recent Advances ◽

Plant Abiotic Stress

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Abiotic stresses induced physiological, biochemical, and molecular changes in Betula platyphylla: a review

Silva Fennica ◽

10.14214/sf.10516 ◽

2021 ◽

Vol 55 (3) ◽

Author(s):

Faujiah Ritonga ◽

Jacob Ngatia ◽

Run Song ◽

Umar Farooq ◽

Sonia Somadona ◽

...

Keyword(s):

Heavy Metal ◽

Transcription Factors ◽

Abiotic Stress ◽

Stress Tolerance ◽

Metal Tolerance ◽

Abiotic Stress Tolerance ◽

Heavy Metal Tolerance ◽

Dry Weight ◽

Betula Platyphylla ◽

Enzymatic Antioxidant

Abiotic stress is one of the major factors in reducing plant growth, development, and yield production by interfering with various physiological, biochemical, and molecular functions. In particular, abiotic stress such as salt, low temperature, heat, drought, UV-radiation, elevated CO2, ozone, and heavy metals stress is the most frequent study in Sukaczev. is one of the most valuable tree species in East Asia facing abiotic stress during its life cycle. Using transgenic plants is a powerful tool to increase the abiotic stress tolerance. Generally, abiotic stress reduces leaves water content, plant height, fresh and dry weight, and enhances shed leaves as well. In the physiological aspect, salt, heavy metal, and osmotic stress disturbs seed germination, stomatal conductance, chlorophyll content, and photosynthesis. In the biochemical aspect, salt, drought, cold, heat, osmotic, UV-B radiation, and heavy metal stress increases the ROS production of cells, resulting in the enhancement of enzymatic antioxidant (SOD and POD) and non-enzymatic antioxidant (proline and AsA) to reduce the ROS accumulation. Meanwhile, upregulates various genes, as well as proteins to participate in abiotic stress tolerance. Based on recent studies, several transcription factors contribute to increasing abiotic stress tolerance in , including , and . These transcription factors bind to different cis-acting elements to upregulate abiotic stress-related genes, resulting in the enhancement of salt, drought, cold, heat, osmotic, UV-B radiation, and heavy metal tolerance. These genes along with phytohormones mitigate the abiotic stress. This review also highlights the candidate genes from another Betulacea family member that might be contributing to increasing abiotic stress tolerance.Betula platyphyllaBetula platyphyllaB. platyphyllaB. platyphyllaB. platyphyllaB. platyphyllaBplMYB46, BpMYB102, BpERF13, BpERF2, BpHOX2, BpHMG6, BpHSP9, BpUVR8, BpBZR1, BplERD15BpNACsB. platyphylla

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