Colletotrichum species associated with pre-and post-harvest diseases of avocado and mango in eastern Australia

Giblin, Fiona; Tan, Yu Pei; Mitchell, Richard R.; Coates, L. M.; Irwin, J. A. G.; Shivas, R. G.

doi:10.1007/s13313-018-0553-0

Cited by 39 publications

(41 citation statements)

References 35 publications

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“…This is more evident in mango since this crop has at least three vegetative periods, depending on adopted cultivar [37,38]. However, it well-known as early leaf infection assessment can represent an efficient predictive method to reduce fruit losses in the orchard [39][40][41] as it was demonstrated for mango germplasm screening to anthracnose where leaf and fruit infections coexisted in orchard [32,[42][43][44]. Although cultivar response to anthracnose attacks was very variable there is a clear predominance of cultivars with intermediate tolerance/susceptibility degrees, i.e., with moderate tolerance and moderate susceptibility toward anthracnose.…”

Section: Discussionmentioning

confidence: 99%

Cultivar Resistance against Colletotrichum asianum in the World Collection of Mango Germplasm in Southeastern Brazil

Vitale

Alfenas

Siqueira

et al. 2020

Plants

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During the spring of 2014, a wide survey was conducted in one of the most important mango (Mangifera indica) cultivating areas located in Minas Gerais State (Brazil) to ascertain the causal agent of severe anthracnose infections and to evaluate disease susceptibility within a world collection of mango germplasm. Overall, 86 cultivars were monitored and 152 fungal isolates recovered from infected samples were identified by morphological characterization, DNA sequencing and phylogenetic analyses. All isolates were identified as Colletotrichum asianum. Under natural disease pressure, it has been possible to ascertain a variable tolerance degree within the germplasm collection. By applying a categorized classification, cultivars were classified as follows: 10 highly sensitive (11.6%), 13 sensitive (15.1%), 18 moderately sensitive (20.9%), 23 moderately tolerant (26.7%), 11 tolerant (12.8%), and 11 highly tolerant (10.4%). The most susceptible cultivars to anthracnose were Ubà, Quinzenga, Amarelinha da Sementeira followed by Aroeira and Correjo, whereas Mallika followed by Ourinho and Lita resulted in the least susceptible cultivars. To the authors’ knowledge, this is the first large-scale evaluation of mango susceptibility to C. asianum infections within a wide number of cultivars. Anthracnose is a serious threat to mango production and assessment of cultivar response to disease could be useful in breeding programs.

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Section: Discussionmentioning

confidence: 99%

Cultivar Resistance against Colletotrichum asianum in the World Collection of Mango Germplasm in Southeastern Brazil

Vitale

Alfenas

Siqueira

et al. 2020

Plants

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“…Morphology and genomic sequences corresponded to Colletotrichum sp. (Barnett and Hunter, 1972;Seifert et al, 2011;Sharma et al, 2017;Giblin et al, 2018). This group has been recently referred to as a species complex known as Colletotrichum gloeosporioides sensu lato, and their accurate identification at the species level requires the use of other methods beyond the scope of the present research (Weir et al, 2012;Sharma et al, 2017;Giblin et al, 2018).…”

Section: Graft Rot and Dieback Caused By Lasiodiplodia Theobromaementioning

confidence: 93%

“…= Botryodiplodia theobromae), algal leaf spot (Cephaleuros virescens Kunze), and sooty mold (Capnodium sp., and Asteridiella perseae F. Stevens Hansf.) (Zentmyer, 1984;Menge and Ploetz, 2003;Tamayo, 2007;APS, 2017;Sharma et al, 2017;Giblin et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Polyphasic identification of preharvest pathologies and disorders in avocado cv. Hass

Ramírez‐Gil

Morales

2019

Agron. colomb.

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Diseases and disorders are one of the main limitations ofavocado crops for export and national markets. However, theyare poorly studied in tropical countries such as Colombia. Theobjective of this research was to evaluate a polyphasic approachfor the diagnosis of pathologies and disorders associated withavocado cv. Hass in nurseries and crop fields located in Antioquia, Colombia. Results allowed the identification of several diseases and disorders present on different tissues in all stages of plant development. The root rot disease was associated with 10 microorganisms and two abiotic disorders. Different organs and tissues of avocado plants were affected by pathogens such as Lasiodiplodia theobromae, Colletotrichum gloeosporioides sensu lato, and Phytophthora palmivora. Pathogens that had not been previously reported in Colombia were identified, and among them P. palmivora, Fusarium oxysporum sensu lato, Phytopythium vexans, Phomopsis sp., and Pythium cucurbitacearum stand out. Abiotic disorders such as hypoxiaanoxia, root atrophy, fruit sunburn, and hailstorm damage were also identified. The etiology of peduncle ringing was not identified. Polyphasic diagnosis of pathologies and disorders is an appropriate approach as part of an integrated disease management program in avocado cv. Hass crop. This work is a reference tool on basic aspects associated with the detection of disorders and pathologies in avocado and the taxonomy of the microorganisms involved.

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“…C. alienum was associated with impact-induced lesions in fruit from the fifth tree. Both C. siamense and C. alienum have previously been reported as common causal agents of anthracnose (body rot) in 'Hass' avocado fruit in eastern Australia [16].…”

Section: Resultsmentioning

confidence: 99%

Impact Injury at Harvest Promotes Body Rots in ‘Hass’ Avocado Fruit upon Ripening

et al. 2020

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Global demand for avocados has risen rapidly in recent years, yet supplying fruit that consistently meets consumer expectations for quality remains a challenge in the industry. Body rots in avocado fruit are a leading cause of consumer dissatisfaction. Anecdotal evidence suggests that body rot development may be promoted by mechanical injury at harvest and packing, despite the fruit being hard, green and mature (i.e., unripe) at these stages. Here, ‘Hass’ avocado fruit, harvested across multiple fruiting seasons from commercial orchards, were subjected to controlled impact from drop heights of 15–60 cm at the time of harvest or packing. With increasing drop height, body rot development at eating ripe stage generally occurred more frequently and produced larger lesions at the impact site and, in some experiments, elsewhere on the fruit. These findings refute a general belief that green mature avocado fruit can tolerate a degree of rough physical handling without ripe fruit quality being compromised. Ideally, best avocado harvesting and packing practice should recognize that unripe fruit must not experience drop heights of 30 cm or higher.

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Colletotrichum species associated with pre-and post-harvest diseases of avocado and mango in eastern Australia

Cited by 39 publications

References 35 publications

Cultivar Resistance against Colletotrichum asianum in the World Collection of Mango Germplasm in Southeastern Brazil

Cultivar Resistance against Colletotrichum asianum in the World Collection of Mango Germplasm in Southeastern Brazil

Polyphasic identification of preharvest pathologies and disorders in avocado cv. Hass

Impact Injury at Harvest Promotes Body Rots in ‘Hass’ Avocado Fruit upon Ripening

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