ArticleJournal of experimental botany2026
Microbial volatile organic compound enhances Arabidopsis growth through activation of nitrate and ammonium transport.
Article in Journal of experimental botany, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Microbial volatile organic compounds (mVOCs) play a crucial role in regulating plant growth through indirect plant-microbe interactions. In this study, we have investigated the molecular mechanisms of plant growth promotion by mVOCs released from Acinetobacter sp. WCHAc060042, Cereibacter sphaeroides TS, Pseudomonas putida YH-2, Acinetobacter tjernbergiae DSM 14971, and Pseudomonas sp. CA10. The volatiles 2,5-dimethylpyrazine (2,5-D) and diethylene glycol (at 100 µM) increased the shoot and root dry weight and increased the chlorophyll a and b, total chlorophyll a+b, carotenoid, and potassium concentrations in the shoots of Arabidopsis seedlings. Furthermore, 2,5-D significantly increased the accumulation of total nitrogen, nitrate, and calcium in the shoots as well as ammonium in the roots, and the expression of AtNRTs and AtAMTs was highly induced in the roots of Arabidopsis seedlings. The transcriptome profile revealed that 1753 and 2766 genes were differentially expressed in the shoots and roots of Arabidopsis, respectively. These genes encompassed plant hormone-related genes, such as those for SAURs and NRT2 family proteins, as well as defense-related transcription factors, including cyclic nucleotide-gated channel (CNGCs), those of the mitogen-activated protein kinase (MAPK) cascade, and WRKYs. In conclusion, these results suggest that 2,5-D is a potential candidate for promoting plant growth by regulating nitrate and ammonium transporters.
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