MIR390 Is Involved in Regulating Anthracnose Resistance in Apple

As an important cash crop in China, apple has a good flavor and is rich in nutrients. Fungal attacks have become a major obstacle in apple cultivation. is one of the most devastating fungal pathogens in apple. Thus, discovering resistance genes in response to may aid in designing safer control strategies and facilitate the development of apple resistance breeding. A previous study reported that 'Hanfu' autotetraploid apple displayed higher resistance than 'Hanfu' apple, and the expression level of was significantly upregulated in autotetraploid plants compared to that in 'Hanfu' plants, as demonstrated by digital gene expression (DGE) analysis. It is still unclear, however, whether regulates apple anthracnose resistance. Apple was transformed into apple 'GL-3' plants to identify the functions of in anthracnose resistance. treatment analysis indicated that the overexpression of reduced fungal damage to apple leaves and fruit. Physiology analysis showed that increased resistance by improving superoxide dismutase (SOD) and peroxidase (POD) activity to alleviate the damage caused by O and H O . Our results demonstrate that can improve apple plants' anthracnose resistance.