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  • Title: Developmental stage has a greater effect than Cry1Ac expression in transgenic cotton on the phyllosphere mycobiome.
    Author: Pan J, Lv X, Jin D, Bai Z, Qi H, Zhang H, Zhuang G.
    Journal: Can J Microbiol; 2019 Feb; 65(2):116-125. PubMed ID: 30265845.
    Abstract:
    Transgenic Bt cotton is widely cultivated, yet its impact on the phyllosphere mycobiome is poorly understood. Hence, the objective of this study was to investigate the effects resulting from the planting of Bt cotton on fungal diversity composition. The α diversity for the Bt cotton line SGK321 was lower than that of control plants at the budding stage and the blossoming and boll-forming stage, while an obvious increase in diversity for Bt cotton XP188 was observed at the same stage. The Cry1Ac levels were higher at the seedling stage than at the budding stage and the blossoming and boll-forming stage. There was no direct relationship between the expression of the Bt protein and variation in the fungal community for Bt cotton. However, PCoA and PCA results indicated that community structure differed among developmental stages. These results indicated that developmental stage rather than Cry1Ac expression was the key factor shaping the phyllosphere mycobiome in transgenic cotton.
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