Biocontrol of gray mold on rosa hybrida cv. Baccara with bacillus subtilis

Abstract

The bacteria Bacillus subtilis was investigated for control of gray mold, postharvest quality and antioxidant enzymes of Rosa hybrida cv. Baccara. The results indicated that the treatment of Bacillus subtilis suspension of 1 × 10 8 cfu mL −1 with resulted in a remarkably improved control of Botrytis cinerea infections. CAT activity in treated flower by antagonism were significantly more than those control (P ≤ 0.05) at 25•C, RH 60-70%. POD activity cut flowers increased during the flower bud development with the lowest activity present at water-sprayed control. Enhanced by antagonism could be due to either induced resistance or direct effects of these chemicals on Botrytis. The proper concentration of Bacillus subtilis can thus provide an effective strategy to increase postharvest vase life of Rosa. Postharvest antagonism application prolonged vase-life in cut rose flowers by improving the reactive oxygen species (ROS) scavenging capacity related to CAT and POD activity.

Inhibition of mycelial growth, conidial germination, and Botrytis cinerea Pers.: Fr colonization in begonia with biocompatible products

“…Considering its characteristics, Bacillus spp. could also be considered an important source of microbial bioprotectants for controlling gray mold in several crops (Lee et al, 2006;Ongena and Jacques, 2008;Xu et al, 2016;Mousavi et al, 2017;Jiang et al, 2018;Calvo-Garrido et al, 2019), and biocontrol of gray mold in begonias has been one such alternative that has been studied in recent years (Fujinawa et al, 2020). We evaluated the potential of crude and roasted coffee oils, potassium and sodium carbonate and bicarbonate, and Bacillus spp.…”