sentence: For this assessment , we used the SG200 Δ tin2 mutant strain , which has been described to lack anthocyanin accumulation in infected leaves ( Tanaka et al ., 2014 ) and the SG200 Δ UMAG_03650 mutant , described to cause a reduction in infection symptoms in floral tissues but no change in symptom development in leaves ( Schilling et al ., 2014 ) .