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Function of hormone signaling in regulating nitrogen-use efficiency in plants
Yunzhi Huang1, Zhe Ji2, Siyu Zhang1
1State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, Nanjing, China.
Journal of Plant Physiology
|February 9, 2024
Summary
Improving nitrogen use efficiency (NUE) in crops is crucial for sustainable agriculture. This review explores how plant hormones interact with nitrogen metabolism to enhance NUE, offering insights for breeding more efficient crop varieties.
Area of Science:
- Plant Biology
- Agricultural Science
- Molecular Biology
Background:
- Nitrogen (N) is vital for crop growth, but excessive fertilizer use increases costs and environmental damage.
- Nitrogen Use Efficiency (NUE) is a complex trait critical for sustainable agriculture.
- Plant hormones significantly influence NUE by mediating responses to nitrogen.
Purpose of the Study:
- To review the molecular mechanisms underlying the interaction between plant hormones and nitrogen metabolism.
- To summarize recent findings on how nitrogen affects hormone pathways and vice versa.
- To explore strategies for enhancing crop NUE through hormone modulation.
Main Methods:
- Literature review focusing on plant hormone-nitrogen interactions.
- Analysis of studies on hormone biosynthesis, transport, and signaling in relation to nitrogen.
- Examination of hormonal effects on root system architecture (RSA) under varying nitrogen availability.
Main Results:
- Nitrogen availability regulates multiple hormone pathways, including biosynthesis, transport, and signaling.
- Hormones modulate root system architecture to optimize nitrogen uptake.
- Interplay between nitrogen metabolism and hormone signaling is key to NUE.
Conclusions:
- Understanding hormone-nitrogen interactions is essential for improving crop NUE.
- Modulating hormone synthesis, transport, and signaling offers promising strategies for breeding N-efficient crops.
- This research provides insights for advancing sustainable agriculture through enhanced crop genetics.
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