Phenotypic differences of M. micrantha in response to P. spegazzinii. A) Different developmental stages of P. spegazzinii in M. micrantha leaf, including early stage of infection (EL, 24, 48, and 96 h post-infection), TIs (7 to 8 d post-infection), and TD stage (15 to 17 d post-infection). Bar = 7 mm. B) Phenotypes of M. micrantha healthy plants (CK) and infected plants at TD stage (n = 5). The phenotype of CK was imaged under normal growth conditions, and the phenotype of TD stage was imaged at 17 d of P. spegazzinii infection. Bar = 6 cm. C) Number of leaves (NL), NS, number of branches (NB), SL, and DW of M. micrantha at CK and TD stages. Values represent the mean ± Se derived from 10 biological replicates. Statistical significance between CK and TD is indicated according to Student's t-test: *P < 0.05 .