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Published on: August 25, 2018
WRKY transcription factors: Key regulators in plant drought tolerance
1College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Abstract:
Drought stress is one of the most common stresses that plants experience during their life cycles. To enhance drought tolerance, plants activate the expression of multiple genes involved in osmoregulation, antioxidant defense, and hormonal signaling pathways. WRKY TFs bind W-box cis-elements in target gene promoters via their DBDs to modulate transcriptional activity. While extensive studies have explored the functions of WRKY TFs in drought adaptation, a systematic synthesis of their regulatory networks remains lacking. By reviewing recent research, this review demonstrates the mechanisms by which WRKY TFs orchestrate drought tolerance, emphasizing their pivotal roles in hormonal signaling, leaf water retention, osmoprotectant biosynthesis, and reactive oxygen species (ROS) detoxification. It provides new insights into plant drought stress tolerance mechanisms.
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Transcription
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Responses to Heat and Cold Stress

