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CsIVP Modulates Low Nitrogen and High-Temperature Resistance in Cucumber
Shuangshuang Yan1, Bingwei Yu1, Fangyan Ming1
1Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, Guangdong Vegetable Engineering and Technology Research Center, College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
Cucumber plants engineered to alter leaf and vascular patterns show improved resistance to nitrogen deficiency and heat stress. This research offers a new target for developing crops resilient to multiple environmental challenges.
Area of Science:
- Plant Science
- Molecular Biology
- Agricultural Science
Background:
- Abiotic stresses significantly reduce crop yield and quality.
- Plant responses to single stresses are known, but mechanisms for multiple stresses are underexplored.
Purpose of the Study:
- To investigate the role of Irregular Vasculature Patterning (CsIVP) in cucumber's response to combined abiotic stresses.
- To determine if modifying CsIVP enhances resistance to nitrogen deficiency and high-temperature stress.
Main Methods:
- Generated CsIVP-RNAi cucumber plants.
- Analyzed gene expression related to nitrate transport and heat stress regulation.
- Investigated protein interactions between CsIVP and heat stress regulators.
Main Results:
- CsIVP-RNAi plants exhibited enhanced resistance to nitrogen deficiency by regulating nitrate transporters (NRT2.1, NRT2.5, NRT1.7, NRT1.9, NRT1.12).
- CsIVP-RNAi plants showed increased survival and reduced heat injury under high-temperature conditions.
- Key heat-stress regulators (Hsfs, Hsps, DREB2C, MBF1b, WRKY33) were significantly expressed in CsIVP-RNAi plants, with CsIVP interacting with CsDREB2C.
Conclusions:
- CsIVP integrates plant development, nutrient transport, and heat resistance.
- Targeting CsIVP presents a promising strategy for breeding nutrient-efficient and heat-tolerant crops.
Related Concept Videos
Responses to Heat and Cold Stress
Introduction to Plant Diversity
Key Elements for Plant Nutrition
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Regulation of Transpiration by Stomata
Inorganic Nitrogen Assimilation

