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. 2019 Jan 30;19:43. doi: 10.1186/s12870-019-1646-9

Fig. 1.

Fig. 1

Changes in endogenous GABA and glutamate contents during treatments T1–T4 (25 °C, 25 °C + GABA, 4 °C and 4 °C + GABA for T1, T2, T3 and T4, respectively). Data represent the mean value ± standard deviation. Means with different letters significantly differ from each other (p ≤ 0.05). Glu, glutamate