Related Experiment Video
Updated: Aug 14, 2026
14:43
Lignin Down-regulation of Zea mays via dsRNAi and Klason Lignin Analysis
Published on: July 23, 2014
ZmWRKY83 Negatively Regulates Waterlogging Stress in Maize
Qiaolu Li1, Jingwei Yan2, Ya Liu2
1College of Cooperative Economics, Zhejiang Institute of Economics and Trade, Hangzhou 310018, China.
Plants (Basel, Switzerland)
|August 13, 2026
Summary
ZmWRKY83 negatively impacts maize waterlogging tolerance. Overexpression worsens growth and impairs root development by suppressing auxin responses via ZmIAA7, revealing a new regulatory pathway for stress tolerance.
Area of Science:
- Plant Biology
- Molecular Genetics
- Abiotic Stress Response
Background:
- Waterlogging is a significant abiotic stress limiting maize yield.
- WRKY transcription factors are crucial for plant stress adaptation, but their roles in maize waterlogging tolerance are not fully understood.
Purpose of the Study:
- To investigate the function of ZmWRKY83 in maize response to waterlogging stress.
- To elucidate the regulatory mechanism of ZmWRKY83 in maize waterlogging tolerance.
Main Methods:
- Gene expression analysis (qRT-PCR)
- Functional analysis of ZmWRKY83 overexpression lines
- Physiological assays (membrane damage, antioxidant capacity)
- Transcriptome sequencing
- Gene regulation assays (DLR, Y1H)
Main Results:
- ZmWRKY83 expression decreases under waterlogging.
- Overexpression of ZmWRKY83 inhibits maize growth, reduces root formation, and impairs antioxidant defense under waterlogging.
- ZmWRKY83 directly represses the auxin-responsive gene ZmIAA7.
Conclusions:
- ZmWRKY83 acts as a negative regulator of maize waterlogging tolerance.
- The ZmWRKY83-ZmIAA7 pathway, involving auxin signaling, is critical for maize response to waterlogging.
- This study expands the understanding of WRKY transcription factor functions in plant stress responses.
More Related Videos
Related Concept Videos
02:41Responses to Drought and Flooding
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
01:57Adaptations that Reduce Water Loss
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
02:04Regulation of Transpiration by Stomata
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.