Exogenous glutamate modulates carbon-nitrogen metabolism and drives secondary metabolism through hormonal crosstalk in tobacco

Yixin Gu; Peng Wang; Huifeng Yan; Li Zhang; Madan Lal Kolhi; X Wang; Yuanhao Sun; Peigang Dai; Hao Zong; Jiandong Su; Jiang Liu; Yong Wang; Yi Shi; Haiwei Liu

doi:10.1016/j.indcrop.2026.123575

May 27, 2026Industrial Crops and ProductsOpen Access

Exogenous glutamate modulates carbon-nitrogen metabolism and drives secondary metabolism through hormonal crosstalk in tobacco

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Key Points

The study aims to explore how exogenous glutamate affects carbon-nitrogen metabolism and secondary metabolism in tobacco through hormonal interactions.
Examined amino acid partitioning between apoplast and symplast under exogenous glutamate treatment.
Analyzed root symplastic assimilation and glutamine levels post-treatment.
Investigated activation of the GABA shunt and nicotine/jasmonate metabolism.
Exogenous glutamate altered amino acid distribution, enhancing root symplastic assimilation and glutamine accumulation.
Glutamine levels increased significantly in the xylem after glutamate treatment, indicating altered transport dynamics.
Activation of the GABA shunt correlated with shifts in nicotine and jasmonate metabolism, suggesting hormonal interactions.

Implication

Examines the effects of exogenous glutamate on metabolism in tobacco, suggesting significant metabolic shifts.

Abstract

● Exogenous glutamate reshapes apoplast–symplast amino acid partitioning. ● Exogenous glutamate promotes root symplastic assimilation and glutamine buildup. ● Glutamine dominates xylem transport after exogenous glutamate treatment. ● Glutamate activates the GABA shunt and nicotine/jasmonate metabolism.

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Cite This Study

Gu et al. (2026) studied this question.

synapsesocial.com/papers/6a192d4afab5b468c4416275 https://doi.org/10.1016/j.indcrop.2026.123575

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Exogenous glutamate modulates carbon-nitrogen metabolism and drives secondary metabolism through hormonal crosstalk in tobacco

Key Points

Implication

Abstract

Discussion

Cite This Study

Exogenous glutamate modulates carbon-nitrogen metabolism and drives secondary metabolism through hormonal crosstalk in tobacco

Key Points

Implication

Abstract

Discussion

Cite This Study

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