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Endophytic Fungal strains Specifically Modified the Biochemical Status of Grape Cells

Yang, Ming-Zhi, Huang, Li-Hua, Ao, Xiu-Jin, Ren, An-Yun, Yuan, Ming-Quan, Zhang, Han-Bo
Journal of plant biology = 2018 v.61 no.4 pp. 210-216
Alternaria, Epicoccum, Trichothecium, coculture, endophytes, flavonoids, fungi, grapes, malondialdehyde, metabolites, stress response
Previously, specific interactions in morphology were observed between grape cells and endophytic fungal strains during a dual culture experiment. However, the biochemical impacts of these fungal endophytes on grape cells is also expected due to their potential application in grape quality management. After assessed multiple physiochemical traits to those grape cells which have co-cultured with different endophytic fungal strains in this study, and found the presence of fungal endophytes obviously triggered ROS stress responses in grape cells, and the biochemical status in grape cells were differentially modified by different fungal strains. In those tested endophytic fungal strains, RH37 (Epicoccum sp.), RH6 (Alternaria sp.), RH32 (Alternaria sp.) and RH34 (Trichothecium sp.) conferred greater metabolic impacts on grape cells. And soluble protein (SPr), total flavonoids (TF), total phenols (TPh) and malondialdehyde (MDA) on the other hand, were sensitive biochemical parameters which can be influenced in greater ranges than other detected parameters. Most interestedly, fungal endophytes shaped metabolites patterns in grape cells during the dual culture appeared fungal genus/species/strain-specificity. The work confirmed the significance of fungal endophytes in grape metabolic regulation and elucidated the possibility to purposely manage grape quality using tool of fungal endophytes.