The abstract is read at the publisher; the summary is JClub's.
Exogenous glycine partially alleviates low-temperature inhibition of nitrogen uptake, assimilation, and photosynthesis in Malus baccata rootstock, improving root activity and biomass accumulation.
- Why it matters: Low temperature limits root nitrogen uptake and transport, restricting apple growth; glycine’s regulatory role in nitrogen metabolism under cold conditions is unclear.
- What they did: Malus baccata Borkh. plants were exposed to low temperature with or without exogenous glycine, measuring photosynthesis, growth, tissue nitrogen, nitrogen-metabolism enzyme activities (NR, GS, GOGAT, GDH, GOT, GPT), and expression of nitrogen-related genes (NRT1.1, NRT2.4, NRT2.5, NRT2.7, AMT1.2, AMT2.1, NR, NiR, GOGAT).
- The result: Glycine increased nitrate-N and total nitrogen while reducing excessive ammonium-N, raised glutamate, glutamine, and aspartate, and upregulated nitrogen transport and assimilation genes, supporting improved nutrient management in cool regions.
The findingWhy it mattersWhat they didThe result
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