The influences of fungal endophytes inoculation on the biochemical status of grape cells of different varieties in vitro

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  • Pan Xiaoxia
    Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Ethnic Medicine, Yunnan Minzu University
  • Li Tong
    School of Ecology and Environmental Science, Yunnan University
  • Liao Changmei
    School of Ecology and Environmental Science, Yunnan University
  • Zhu Youyong
    Key Laboratory for Agro-biodiversity and Pest Control of Ministry of Education, Yunnan Agricultural University
  • Yang Mingzhi
    School of Ecology and Environmental Science, Yunnan University

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<p>The metabolic patterns of grape cells can be specifically shaped by different strains of dual-cultured fungal endophytes. In this work, a solid co-culture system was furtherly proposed to illustrate the different impacts of endophytic fungi on the biochemical status of grape cells of different varieties. By measuring the metabolic impacts of contact fungal endophytes on grape cells of the varieties ‘Rose honey’ (RH) and ‘Cabernet sauvignon’ (CS), we observed that most of the fungal strains used had promoting effects on grape cellular biochemistry parameters. Compared with the control, inoculation with most of the fungal strains increased the superoxide dismutase (SOD) and phenylalanine ammonia-lyase (PAL) activities as well as the total flavonoid (TF) and total phenolics (TPh) contents in both types of grape cells. Among the tested strains, RH34, RH49 and MDR36 had relatively stronger biochemical impacts on grape cells. More interestingly, in addition to the varietal specificity, a certain degree of fungal genus specificity was also observed during the metabolic interactions between fungal endophytes and grape cells, as fungal endophytes from the same genus tended to be clustered into the same group based on the affected biochemical traits. This work revealed the differential biochemical status effects of fungal endophytes on different varietal grape cells and raised the possibility of reshaping grape qualities by applying endophytes.</p>

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