Etiology of Twister Disease Complex in Onion

Patil, Suresh S.; Nargund, V. B.; Hariprasad, K.; Hegde, Gurudatth; Lingaraju, S.; Benagi, V. I.

doi:10.20546/ijcmas.2018.712.413

Cited by 5 publications

(14 citation statements)

References 3 publications

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“…This was due to the tip of the shallot leaf withered and dried. This symptom is an advanced symptom of twisted disease thus significantly reducing plant height (Patil et al, 2018). This is consistent with the results of the research conducted by Naguleswaran et al (2014) that twisted caused by Fusarium can make the end of the plant experience necrosis.…”

Section: Fungicides Efficacy On Shallots Growth and Yieldsupporting

confidence: 90%

“…The observation of disease variables on shallot plants was incubation period, percentage of attack and intensity of attack. The incubation period of twisted shallot began to be observed from the first day of planting until the plants showed symptoms that were characterized by pale green leaves and curves (twisted) (Patil et al, 2018). In the first week, all plants did not show the symptoms of twisted disease.…”

Section: Fungicide Efficacy On Twisted Disease In Shallotsmentioning

confidence: 99%

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Effectiveness of the Ageratum (Ageratum conyzoides) Leaf Extract as Botanical Fungicide Against Twisted Disease of Shallot

Rianosa

Hartal²,

Setyowati³

2020

J. Lahan Suboptimal

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Rianosa R, Hartal H, Setyowati N. 2020. Effectiveness of the Ageratum (Ageratum conyzoides) leaf extract as botanical fungicide against moler diseases of shallot. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 1-10. Moler is a major disease of onion caused by Fusarium oxysporum f. sp. cepae. Application of synthetic fungicides in the long-term has a negative effect to the environment. Weed leaves of Ageratum (Ageratum conyzoides) have potential to be an anti-fungal, anti-bacterial as well as anti-cancer. This study aimed to determine the best concentration of Ageratum leaf extract to control twisted disease and to compare the effectiveness of botanical fungicide and synthetic fungicide. The research was conducted in June - September 2018 at the Plant Protection Laboratory and greenhouse, University of Bengkulu. The experiment was consists of five Ageratum leaf extract concentrations as a botanical fungicide (i.e. 1%, 2%, 3%, 4%, and 5%), and synthetic fungicide namely mancozeb and metil tiofanat and control treatment (in sterile soil with no fungicide treatment). The experiment used Completely Randomized Design (CRD) with a single factor. Ageratum leaf extract was obtained through the maceration method using ethanol 96%. The application of fungicide was carried out on shallot bulbs before planting. The results showed botanical fungicides from Ageratum leaf extract were effective against twisted disease of shallots, concentration 4% of Ageratum leaf extract resulted in a longer incubation period and lower disease intensity compared to other concentrations, and the effectiveness of Ageratum leaf extract at a concentration of 4% was comparable to that of mancozeb to control twisted disease. Application of both synthetic and botanical fungicide resulted in a higher yield of shallot. Therefore, Ageratum leaf extract has potential as a substitution of synthetic fungicides to control twisted disease of shallots.

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Section: Fungicides Efficacy On Shallots Growth and Yieldsupporting

confidence: 90%

Section: Fungicide Efficacy On Twisted Disease In Shallotsmentioning

confidence: 99%

Effectiveness of the Ageratum (Ageratum conyzoides) Leaf Extract as Botanical Fungicide Against Twisted Disease of Shallot

Rianosa

Hartal²,

Setyowati³

2020

J. Lahan Suboptimal

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“…In the other study, Ongoagwanit (1991) detected the increase of IAA on onion after F. oxysporum induce as a cause of twisted disease. Patil et al (2018) showed abnormal elongation of the onion plant after IAA and GA3 spraying but did not show any pathogen structure. The statement contrast with this research that IAA was not found in all isolates.…”

Section: Hormone Analysis Of Iaa and Ga3mentioning

confidence: 96%

“…In contrast, the twisted symptoms are caused by F. solani or F. acutatum (Lestiyani et al, 2016). Meanwhile, Patil et al, 2018 stated that inoculated onion seedlings with Colletotrichum gloeosporioides, F. oxysporum, and Meloidogyne sp. create twisted disease symptoms.…”

Section: Introductionmentioning

confidence: 99%

Pathogenicity and Detection of Phytohormone (Gibberellic Acid and Indole Acetic Acid) Produced by Fusarium spp. that Causes Twisted Disease in Shallot

2021

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The twisted disease is one of the essential diseases in shallots caused by Fusarium spp. This study aimed to study pathogenicity and identify Fusarium species isolated from shallot plants with twisted symptoms in Nganjuk and Bantul areas. The Fusarium isolates were identified and then tested for pathogenicity levels and the effect of the hormones GA3 and IAA on shallot symptoms. Molecular identification using NF2 and NF4 successfully identified one isolate of Fusarium oxysporum, three isolates of F. acutatum, and three isolates of F. solani. Each of these species produces different symptoms. Pathogenicity test showed that all isolates had disease incidence reaching 100%, except isolates of F. solani1 causing wilt and F. solani3 causing twisted have the lower disease incidence were 77.8% and 77.7%, respectively. The investigation caused twisted shallot related to different symptoms was tested using the Thin Layer Chromatography (TLC) method. The result indicates that all isolates did not find IAA hormone. In contrast, the hormone GA3 was found in F. solani2 and F. solani3 isolates, caused bulb rot and twisted disease, respectively. Detection of IAA, GA3, and other hormones in shallot plants showed different symptoms should be studied further.

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“…In another report, onion seedlings inoculated with C. gloeosporioides, F. oxysporum , and Meloidogyne spp. also caused twister disease symptoms 19 .…”

Section: Introductionmentioning

confidence: 99%

Insights into the cumulative effect of Colletotrichum gloeosporioides and Fusarium acutatum causing anthracnose-twister disease complex of onion

Dutta,

Jayalakshmi,

Kumar

et al. 2024

Sci Rep

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Colletotrichum is an important plant pathogenic fungi that causes anthracnose/-twister disease in onion. This disease was prevalent in the monsoon season from August to November months and the symptoms were observed in most of the fields. This study aimed to investigate the pathogenicity and cumulative effect, if any of Colletotrichum gloeosporioides and Fusarium acutatum. The pot experiment was laid out to identify the cause responsible for inciting anthracnose-twister disease, whether the Colletotrichum or Fusarium or both, or the interaction of pathogens and GA3. The results of the pathogenicity test confirmed that C. gloeosporioides and F. acutatum are both pathogenic. C. gloeosporioides caused twisting symptoms independently, while F.acutatum independently caused only neck elongation. The independent application of GA3 did not produce any symptoms, however, increased the plant height. The combined treatment of C. gloeosporioides and F. acutatum caused twisting, which enhanced upon interaction with GA3 application giving synergistic effect. The acervuli were found in lesions infected with C. gloeosporioides after 8 days of inoculation on the neck and leaf blades. Symptoms were not observed in untreated control plants. Koch's postulates were confirmed by reisolating the same pathogens from the infected plants.

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Etiology of Twister Disease Complex in Onion

Cited by 5 publications

References 3 publications

Effectiveness of the Ageratum (Ageratum conyzoides) Leaf Extract as Botanical Fungicide Against Twisted Disease of Shallot

Effectiveness of the Ageratum (Ageratum conyzoides) Leaf Extract as Botanical Fungicide Against Twisted Disease of Shallot

Pathogenicity and Detection of Phytohormone (Gibberellic Acid and Indole Acetic Acid) Produced by Fusarium spp. that Causes Twisted Disease in Shallot

Insights into the cumulative effect of Colletotrichum gloeosporioides and Fusarium acutatum causing anthracnose-twister disease complex of onion

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