The abstract is read at the publisher; the summary is JClub's.
Zn–Mg co-application in tobacco significantly increases plant height, stem circumference, leaf size, photosynthetic pigment levels, and antioxidant enzyme activities while lowering malondialdehyde (MDA) content.
- Why it matters: The synergistic regulation of photosynthesis, carbon metabolism, and hormone signaling by zinc and magnesium co-application is not well explained for tobacco production.
- What they did: The study combined agronomic, physiological, transcriptomic, and metabolomic analyses to map how Zn–Mg shifts porphyrin metabolism and photosynthetic electron transport, and activates tryptophan metabolism linked to auxin biosynthesis and signaling.
- The result: Multi-omics evidence supports two coordinated pathways—porphyrin metabolism to carbon metabolism and tryptophan metabolism to auxin signaling—providing a basis for more precise Zn–Mg fertilization in tobacco.
The findingWhy it mattersWhat they didThe result
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