September 18, 2025PLANT PHYSIOLOGY

Enhanced putrescine levels improve nitrogen use efficiency and vegetative growth in Arabidopsis plants under nitrogen limitation

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The ADC2-overexpressing Arabidopsis line demonstrated greater growth and nitrogen use efficiency compared to wild type under nitrogen deficiency.
Elevated putrescine levels enhanced nitrate transporter expression and nitrate reductase activity, improving nitrogen metabolism.
The overexpression of ADC2 in Arabidopsis maintained photosynthetic efficiency, highlighting the significance of polyamines in plant growth.
Genetic manipulation of putrescine synthesis could be a viable strategy for more sustainable agricultural practices.

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Transgenic Arabidopsis overexpressing ADC2 shows improved nitrogen use efficiency, suggesting putrescine's role in nitrogen metabolism.

Recalde et al. (2025) studied this question.

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