Postharvest harpin or Bacillus thuringiensis treatments suppress citrus black spot in ‘Valencia’ oranges

Antimicrobial effects of volatiles produced by two antagonistic Bacillus strains on the anthracnose pathogen in postharvest mangos

“…B. pumilus has also been tested for control of gray mold on apples caused by Botrytis mali (Jamalizadeh et al, 2010). B. thuringiensis has been suggested to be an important alternative for future use to reduce fungicide application rates to control postharvest diseases (Lucon et al, 2010). In previous research, some Bacillus strains, such as Bacillus subtilis, have played an important role in bio-control of postharvest fungal The compounds generated by Bacillus strains were tentatively identified by mass spectra comparison to those in the NIST Mass Spectral Library (probability based match > 80%).…”

Phyllosticta citricarpa and sister species of global importance to Citrus

“…In addition, the movement of leaf litter from infected orchards through vehicle/machine movement is also important (Dewdney et al ., ; Silva‐Junior et al ., ). Citrus fruit is not considered to be a realistic pathway for spread of P. citricarpa to new areas (USDA APHIS, ) for the following reasons: (i) the airborne ascospores cannot be produced on fruit, (ii) pycnidia are only produced in certain fruit lesion types (Brentu et al ., ; FAO, ; Kotzé, ; Marques et al ., ; OEPP/EPPO, ; Wager, ) and conidia are short‐lived with low germination ability (Kiely, ), (iii) conidium dispersal from fruit lesions is by means of short‐distance (<1 m) wash‐down dispersal (Kiely, ; McOnie, ; Spósito et al ., , ; Whiteside, ), (iv) standard packhouse treatments and cold storage effectively control P. citricarpa infections (Korf et al ., ; Lucon et al ., ; Rappussi et al ., , ; Schreuder et al ., ; Seberry et al ., ; Yan et al ., ), and CBS lesions on fruit or discarded peel segments have a very low reproductive potential (Korf et al ., ; Schreuder et al ., ; Schutte et al ., ), and (v) fallen leaves are not susceptible to infection (Truter et al ., ). Inter‐state movement of commercial packhouse‐treated fruit from CBS present to CBS‐absent areas is therefore permitted in the USA, in line with their Pest Risk Analysis conclusion that fruit is not a realistic pathway (USDA APHIS, ).…”

“…() demonstrated that the combination of standard packhouse fungicide treatments aimed at green mould or sour rot control (including pre‐packhouse drench, packhouse dip and brush application of a wax coating) followed by cold storage (common shipping protocol for exported fresh fruit) consistently showed moderate to high levels of control of CBS in lemons and oranges. Several other studies also reported control of latent P. citricarpa infections through application of various chemical or biological postharvest treatments (Lucon et al ., ; Rappussi et al ., , ; Seberry et al ., ; Yan et al ., ). On the contrary, Agostini et al .…”

Elicitors: A Tool for Improving Fruit Phenolic Content

“…Moreover, this protein activates ROS burst, SA and the JA/ethylene signal transduction pathways that confer SAR to different plants [100][101][102]. Harpin has been applied as an effective postharvest treatment to prevent decay in oranges [103], melons [104], apples [105] and pears [106]. In addition, field applications demonstrated its usefulness for controlling pathogen-borne diseases in passion fruits [107], pears [108], quince and loquat [109].…”