scholarly journals Antifungal effect of plants extracts against Pestalotiopsis microspora responsible for post-harvest rot disease of pineapple (Ananas comosus (L.) Merr) fruit in Cameroon

2021 ◽  
Vol 17 (6) ◽  
pp. 916-922
Author(s):  
Aoudou YAOUBA ◽  
ENAMA Bernadette METSOA ◽  
MBOMA Yves Didier NSEME ◽  
NGOBISA Aurelie Irene Claire NYAKA
Keyword(s):  
Ananas Comosus ◽  
Antifungal Effect ◽  
Post Harvest ◽  
Pestalotiopsis Microspora ◽  
Rot Disease

scholarly journals Kemampuan Bakteri Endofit Akar dan Ubi Kentang untuk Menekan Penyakit Busuk Lunak (Erwinia carotovora pv. carotovora) pada Ubi

Agrikultura ◽  
2016 ◽  
Vol 27 (3) ◽  
Author(s):  
Noor Istifadah ◽  
Muhamad Salman Umar ◽  
Sudarjat Sudarjat ◽  
Luciana Djaya
Keyword(s):  
Biological Control ◽  
Potato Tuber ◽  
Endophytic Bacteria ◽  
Erwinia Carotovora ◽  
Soft Rot ◽  
Soft Rot Disease ◽  
Post Harvest ◽  
Rot Disease

ABSTRACTThe abilities of endophytic bacteria from potato roots and tubers to suppress soft rot disease (Erwinia carotovora pv. carotovora) in potato tuberSoft rot disease caused by Erwinia carotovora pv. carotovora is one of limiting factors in cultivation and post harvest of potato. The eco-friendly control measure that can be developed for controlling the diseases is biological control. Microbes that are potential as biological control agents include endophytic bacteria. This paper discussed the results of study examining the potential of endophytic bacteria isolated from roots and tubers of potato to inhibit the growth of E. carotovora pv. carotovora in vitro and suppress soft rot disease in potato tuber. The results showed that among 24 isolates examined, four isolates of endophytic bacteria (one isolate from potato tuber and three isolates from potato roots) inhibited the growth of E. carotovora pv. carotovora in vitro with inhibition zone 3.5-6.8 mm. In the in vivo test, the isolates inhibited the soft rot disease in potato tuber by 71.5-86.4%. The isolate that tended to show relatively better inhibition in vitro and in vivo was isolate from potato tuber which is CK U3 (Lysinibacillus sp.)Keywords: Biological control, Endophytic bacteria, Post-harvest, Potato, Soft rot diseaseABSTRAKPenyakit busuk lunak yang disebabkan bakteri Erwinia carotovora pv. carotovora, merupakan salah satu kendala dalam budidaya dan pascapanen kentang. Cara pengendalian ramah lingkungan yang dapat dikembangkan untuk menekan penyakit tersebut adalah pengendalian biologi. Kelompok mikroba yang berpotensi sebagi agens pengendali biologi adalah bakteri endofit. Artikel ini mendiskusikan potensi isolat bakteri endofit yang berasal dari ubi dan akar kentang untuk menghambat pertumbuhan bakteri E. carotovora pv. carotovora secara in vitro dan menekan perkembangan penyakit busuk lunak pada ubi kentang. Hasil percobaan menunjukkan bahwa diantara 24 isolat bakteri yang diuji, terdapat empat isolat bakteri endofit (satu isolat dari ubi kentang dan tiga isolat dari akar kentang) yang dapat menghambat pertumbuhan bakteri E. carotovora pv. carotovora secara in vitro dengan zona penghambatan sebesar 3,5-6,8 mm. Pada pengujian secara in vivo, isolat-isolat tersebut dapat menekan perkembangan penyakit busuk lunak pada ubi kentang sebesar 71,5-86,4%. Isolat yang cenderung menunjukkan penghambatan relatif lebih baik secara in vitro dan in vivo adalah isolat bakteri endofit asal ubi kentang yaitu isolat CK U3 (Lysinibacillus sp.).Kata Kunci: Pengendalian biologi, Bakteri endofit, Pascapanen, Kentang, Penyakit busuk basah

scholarly journals Isolatation and Identification of the Fungi Causing Tomato Fruit Rot Disease in the Vicinity of Tandojam, Sindh

2020 ◽  
Author(s):  
S. Nizamani ◽  
A. A. Khaskheli ◽  
A. M. Jiskani ◽  
S. A. Khaskheli ◽  
A. J. Khaskheli ◽  
...  
Keyword(s):  
Tomato Fruit ◽  
Aerial Mycelium ◽  
Alternaria Solani ◽  
Economic Loss ◽  
Geotrichum Candidum ◽  
Fruit Rot ◽  
Post Harvest ◽  
Standard Procedures ◽  
Fruit Samples ◽  
Rot Disease

Background: The post-harvest tomato fruit rot disease is common threat to the tomato fruit, causing huge economic loss as revealed by (GOP, 2018). The present study was conducted for isolatation and identification of causative agent of tomato fruit rot in order to formulate the proper management stretegies. Methods: Study was conducted in three phases. Phase one included collection of tomato fruit samples from vicinity of Tandojam. In phase two pathogens were isolated from the samples at laboratory, while in the phase three pathogens were identified using standard procedures. Result: The experimental results indicated Alternaria solani as the main cause of post-harvest tomato fruit rot. The symptoms observed were presence of brown to black rot lesions on tomato fruits with distinct rings ranging from small pin-heads to whole surface of fruit. A total of six different fungi viz., Alternaria alternata, Aspergillus niger, Alternaria solani, Geotrichum candidum, Fusarium oxysporum and Rhizopus stolonifer were found to be associated with post harvest tomato rot. Significantly higher infection was recorded for A. solani (53.667%) followed by A. niger (16.333%) and G. candidum (13.00%). The lowest infection percentage was observed for F. oxysporum (2.333%), followed by A. alternata (4.00%) and R. stolonifer (9.00%). A. solani produced aerial mycelium with yellowish to reddish diffusible pigments. A. niger cultures were typically black and colonies were initially whitish to yellow and later became brown to black in colour. G. candidum produced white and nonaerial colonies. F. oxysporum produced circular, aerial mycelium initially white, later changed to light pink. R. stolonifer produced whitish to grey fuzzy colonies.

scholarly journals Impact of Pre- and Post–Harvest Applications of Natural Antimicrobial Products on Apple and Pear Soft Rot Disease

2016 ◽  
Vol 4 (3) ◽  
pp. 105-119
Author(s):  
Abdelradi T. Bakeer ◽  
Khaled Elbanna ◽  
Sameh A. Elnaggar
Keyword(s):  
Antibacterial Activity ◽  
Plant Extracts ◽  
Antimicrobial Agents ◽  
Soft Rot ◽  
Natural Antimicrobial ◽  
Soft Rot Disease ◽  
Post Harvest ◽  
Rot Disease ◽  
Bacillus Strains

Three natural antibacterial compounds including bacteriocin like substance (BLS) produced from lactic acid bacteria (LAB), ethanolic extract of propolis (EEP), and nine plant extracts were evaluated against soft rot Bacillus strains. Testing in vivo these compounds were evaluated to control pear and apple soft rot disease. Among eight BLS tested, BLS of LAB2, LAB105 and LAB 107 exhibited the highest antibacterial activity as indicated by the formation of clear inhibition zone. Propolis extracts exhibited significant antibacterial activity against all tested soft rot Bacillus strains and it was noticed that the antibacterial activity was concentration dependent. Among nine plant extracts tested, extracts of Eucalyptus globulus and Psidium guajava exhibited the highest antibacterial activity. All tested antibacterial products significantly decreased apple and pear soft rot severity caused by Bacillus altitudinis compared to untreated control. The highest reduction percentage of soft rot severity was recorded for EEP followed by BLS from LAB and plant extracts tested, respectively. Combined pre-and post-harvest treatments of apple and pear with antimicrobial compounds proved to be more effective in reducing the soft rot severity and improved the physical and chemical properties of fruits during storage in both years of the study. The natural antimicrobial agents used in this study were promising compounds, since it seems to be more safe, economical and great potential for extending the shelf life and improve the quality of fruits. Therefore, the application of these compounds in the control of apple and pear soft rot could be advantageous for consumers, producers, and the environment.

scholarly journals Assessment of the Physicochemical and Nutritional Parameters of Pineapple Fruits (Ananas comosus L.) and Post-harvest Bioconservation Test

2021 ◽  
Vol 9 (2) ◽  
pp. 53-61
Author(s):  
KOFFI Yao Fulgence ◽  
TRAORE Moumouny ◽  
DEFFAN Kahndo Prudence ◽  
Louis BAN KOFFI ◽  
Mireille W.A. ALLOUE-BORAUD
Keyword(s):  
Ananas Comosus ◽  
Nutritional Parameters ◽  
Post Harvest

scholarly journals Biocontrol of Post-harvest Fungal Diseases of Pineapple (Ananas comosus L.) Using Bacterial Biopesticides

2021 ◽  
Vol 9 (2) ◽  
pp. 34-43
Author(s):  
KOFFI Yao Fulgence ◽  
TRAORE Moumouny ◽  
YAPI Yapi Eric ◽  
Louis BAN KOFFI ◽  
Camelia DIGUTA ◽  
...  
Keyword(s):  
Fungal Diseases ◽  
Ananas Comosus ◽  
Post Harvest

scholarly journals Bioefficacy of Trichoderma species against important fungal pathogens causing post-harvest rot in sweet potato (Ipomoea batatas (L.) Lam)

2019 ◽  
Vol 17 (4) ◽  
pp. 446-453
Author(s):  
Victor Ohileobo DANIA
Keyword(s):  
Ipomoea Batatas ◽  
Antibiotic Production ◽  
Trichoderma Viride ◽  
Storage Period ◽  
Economic Losses ◽  
Trichoderma Species ◽  
Post Harvest ◽  
Rot Disease ◽  
Tuber Rot

Tuber rot disease constitutes a serious threat to sweetpotato production worldwide, causing economic losses to farmers.  This study evaluated an eco-friendly approach using four biological control agents, Trichoderma viride, T. harzianum, T. hamatum and T. pseudokoningii for the management of post-harvest tuber rot disease of sweetpotato. Field surveys for infected tuber samples were conducted four across major sweetpotato states in Nigeria. Rot severity in inoculated tubers was evaluated over a storage period of four months and Trichoderma species isolated from the rhizosphere were bioassayed for the production of metabolites to evaluate the mechanism of antibiotic production for the control of rot pathogens using Gas Chromatography-Mass Spectroscopy. A total of 24 metabolites were produced by the Trichoderma species and the abundances were species dependent. Trichoderma species significantly (p<0.05) inhibited rot in treated tubers at 4 months after storage. However, T. harzianum was most effective, reducing mycelia growth of the rot pathogens by 54.6-77.3% in vitro and 47.2-68.8% reduction of rot incidence in vivo. The efficacy of Trichoderma species used in this study recommends their use as alternative therapy to synthetic fungicides in the management of post-harvest rot in sweetpotato. J Bangladesh Agril Univ 17(4): 446–453, 2019

scholarly journals The Occurrence of Soft Rot (Janthinobacterium Agaricidamnosum) In Mushroom (Agaricus Bisporus) Crops

2013 ◽  
Vol 53 (2) ◽  
pp. 148-153 ◽  
Author(s):  
Krzysztof Pudełko
Keyword(s):  
Agaricus Bisporus ◽  
Soft Rot ◽  
Fruiting Bodies ◽  
Disease Symptoms ◽  
Soft Rot Disease ◽  
Post Harvest ◽  
Rot Disease

Abstract This study evaluated the development of soft rot disease (Janthinobacterium agaricidamnosum) in Agaricus bisporus crops. Symptoms of the disease appeared at the end of the first break of the mushroom’s harvest and mostly occurred in the later stages of cultivation (in the second break and between the 1st and 2nd crop). Distribution of lesions in growing rooms indicated that employees served as a vector of disease infection, which was spread when harvesting the mushrooms. An evaluation of the post-harvest mushrooms showed that fruiting bodies, especially those stored in closed containers, showed disease symptoms when infected at harvest.

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