Effects of anthracnose disease on avocado production in Kenya

Kimaru, K. S; Muchemi, K. P; Mwangi, Jedidah Wangari

doi:10.1080/23311932.2020.1799531

Cited by 15 publications

(10 citation statements)

References 72 publications

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“…include cupric products, strobirulines, dithiocarbamates, benzimidazole, and triazole compounds, together with other chemicals, such as prochloraz, imazalil, and chorothalonil [ 3 , 7 ]. However, their improper use, as well as consecutive treatments based on substances with the same mechanisms of action, have been related to decreases in the sensitivity of pathogens and the emergence of resistant strains [ 23 , 33 , 47 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 ]. For instance, impaired sensitivity toward prochloraz and benzimidazole has been revealed in C. gloeosporioides sensu lato isolates from avocado and mango fruits [ 23 , 51 ].…”

Section: Traditional Approachesmentioning

confidence: 99%

Management of Post-Harvest Anthracnose: Current Approaches and Future Perspectives

Ciofini

Negrini

Baroncelli

et al. 2022

Plants

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Anthracnose is a severe disease caused by Colletotrichum spp. on several crop species. Fungal infections can occur both in the field and at the post-harvest stage causing severe lesions on fruits and economic losses. Physical treatments and synthetic fungicides have traditionally been the preferred means to control anthracnose adverse effects; however, the urgent need to decrease the use of toxic chemicals led to the investigation of innovative and sustainable protection techniques. Evidence for the efficacy of biological agents and vegetal derivates has been reported; however, their introduction into actual crop protection strategies requires the solutions of several critical issues. Biotechnology-based approaches have also been explored, revealing the opportunity to develop innovative and safe methods for anthracnose management through genome editing and RNA interference technologies. Nevertheless, besides the number of advantages related to their use, e.g., the putative absence of adverse effects due to their high specificity, a number of aspects remain to be clarified to enable their introduction into Integrated Pest Management (IPM) protocols against Colletotrichum spp. disease.

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Section: Traditional Approachesmentioning

confidence: 99%

Management of Post-Harvest Anthracnose: Current Approaches and Future Perspectives

Ciofini

Negrini

Baroncelli

et al. 2022

Plants

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“…This variety production is hampered by several factors, including poor rootstalk, diseases, pests, abiotic factors, poor harvesting technology, improper handling, and postharvest diseases (Al-Kharousi et al, 2016 ). In addition, anthracnose disease caused by fungi is a major concern both in the field and postharvest (Kimaru et al, 2020 ). The fruit ripening stage is an important postharvest criterion in product selection as the state of maturity greatly influences the shelf life or storage ability (Sotomayor et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Microbiota and its antibiotic resistance profile in avocado Guatemalan fruits (Persea nubigena var. guatemalensis) sold at retail markets of Ibarra city, northern Ecuador

Angamarca,

Castillejo,

Tenea

2023

Front. Microbiol.

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IntroductionAvocados are typically sold in unsanitary conditions at the retail markets in Ecuador, which can raise the risk of microbial contamination. These microorganisms could exhibit multi-antibiotic resistance (MAR), being a serious threat concern to human health. In this study, we aimed to evaluate the microbiota and its antibiotic resistance profile in avocado Guatemalan fruits (Persea nubigena var. guatemalensis), at ripe stage: immature, firm light green (ready to eat in 4 days), peel (AFPE) and pulp (AFPU), and mature intense green (ready to eat) peel (AMPE) and pulp (AMPU), to gain baseline information on the prevalence of MAR bacteria.MethodsCulture-independent (16S rRNA metagenomics) and culture-dependent approach (to detect specific indicator microorganisms) were used. Moreover, antibiotic susceptibility of selected target indicator bacteria was assessed providing information about the antibiotic resistance (AR) among the groups.ResultsBased on 16S rRNA gene metagenomic analysis, over 99.78% of reads were classified as bacteria in all samples. Shannon diversity index varies from 1.22 to 2.22, with the highest bacterial population assigned to AFPE samples (1327 species). The highest microbial counts of indicator Staphylococcus spp. (STAPHY), Enterobacter spp. (ENT), and Listeria spp. (LIST), were detected in AMPE samples. Thirty percent of the selected STAPHYs, and 20.91% of Enterobacter (ENT) clones were resistant to various classes of antibiotics. The MAR index varies between 0.25 to 0.88 and was clone-, and fruit ripe stage-dependent.ConclusionsThe results indicated that ready to eat avocados contained detectable levels of MAR bacteria, including methicillin resistant (MR)-STAPHY, which may act as a potential vector for the spread of antibiotic resistance. To achieve the increase of the production and marketing of Fuerte cultivar in Ecuador, it is vitally important to consider valuable strategies to protect the fruits at the early ripe stage in future. Thus, it is crucial to set up efficient control measures and develop coordinated strategies to guarantee the microbiological quality of the food.

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“…(strawberry) and Carica papaya (papaya) etc. [15][16][17][18][19][20][21]. All these are economically important crops.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2022

SBB

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At this time the whole world food security is considered, so the study of a highly valuable Jackfruit trees showing stem Anthracnose and dieback diseases is a very urgent problem. A survey was done from summer months of 2020 to the summer months of 2022 in Jack fruit trees growing areas of Bengaluru like Arrupe Nivas and Ashirvad campus to identify different fungal diseases and pathogens causing that disease in it. Different stem and leaf samples were collected from study areas for isolation of fungal pathogens by the latest research methods like Blotter and Culture Potato Dextrose Agar (PDA) medium. Arrupe Nivas, jack fruit leaf and stem samples shown the Colletotrichum gloeosporioides (Penz.) Sacc., Lasiodiplodia theobromae (Pat.) Griffon & Maubl., Aspergillus niger Tieghem and Trichoderma sp; whereas Ashirvad campus, Jack fruit leaf and stem samples showed the C. gloeosporioides, Fusarium oxysporun Schlecht. and Epicoccum nigrum Link. The frequently isolated fungal pathogens from Arrupe Nivas jack fruit trees were C. gloeosporioides and L theobromae, whereas the frequently isolated fungal pathogen from Ashirvad campus jackfruit trees was C. gloeosporioides. The pathogenicity test confirms that the anthracnose and dieback diseases are responsible for the death of Jackfruit trees in Arrupe Nivas and dieback disease in Ashirvad campus. The similar type of diseases symptoms was also observed in the Jackfruit growing areas of Bengaluru, Karnataka, India. For the first time the Anthracnose in stem and dieback in trees of jackfruit growing areas of Bengaluru of Karnataka was reported.

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Effects of anthracnose disease on avocado production in Kenya

Cited by 15 publications

References 72 publications

Management of Post-Harvest Anthracnose: Current Approaches and Future Perspectives

Management of Post-Harvest Anthracnose: Current Approaches and Future Perspectives

Microbiota and its antibiotic resistance profile in avocado Guatemalan fruits (Persea nubigena var. guatemalensis) sold at retail markets of Ibarra city, northern Ecuador

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