Occurrence, Pathogenicity and Assessment of Groundnut Genotypes Resistance to Aspergillus niger Inciting Collar Rot Disease

Kumar, Chandrajeet; Saifulla, Muhammad; Reddy, Madem Gurivi; Naveenkumar, R; Prabhukarthikeyan, S.R.

doi:10.20546/ijcmas.2020.911.105

Cited by 2 publications

(6 citation statements)

References 9 publications

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“…The similar specifications of Aspergillus niger was reported by (Gautam and Bhadauria 2012;Kasfi et al 2018;Romsdahl et al 2018;Rodriguez et al 2019;Kumar et al 2020;Šimonovicová et al 2021). Previously, Santoso et al (2021) identified A. niger based on cultural and morphological characteristics, such as black colony, hyaline conidiophore and sterigmata, biseriate conidia.…”

Section: Isolation and Identification Of Fungisupporting

confidence: 75%

“…The pathogenicity test was conducted using 14 days-old seedlings of groundnut (variety L14) in the net house at the Institute of Biotechnology, Hue University. The pathogenicity test was carried out using modified method of Kumar et al (2020). Groundnut seeds were grown in plastic pots (353030 cm) containing 5 kg of sterilized soil.…”

Section: Pathogenicity Testmentioning

confidence: 99%

“…However, the two isolates QT1 and H17 showed the highest disease severity (100%) and were statistically different from other isolates (p≤0.05) (Table 2). Several studies emphasized the importance of using combined morphological characteristics and pathogenicity assays for accurate identification of Aspergillus species (Rani et al 2018;Kumar et al 2020).…”

Section: Pathogenicity Testmentioning

confidence: 99%

“…Aspergillus niger van Tieghem is a soil-borne pathogen associated with black collar rot disease of groundnut (Rohtas et al 2016;Dighule et al 2018;Bajaya et al 2022). The fungus causes rotting in seed, seedling and mature plants, and thereby drastically reduces plant growth (Kumar et al 2020). In moist soil, seeds may be attacked and killed due to rotting.…”

Section: Introductionmentioning

confidence: 99%

“…Dead and dried branches are easily detached from the disintegrated collar region and infected pods reveal patches of black sooty spores (Kumar et al 2020;Shricharan et al 2020). Annual world yield loss caused by collar rot disease is more than 10% (Kumar et al 2020) and is more prevalent in soils with low moisture content and high temperature (i.e., approximately 30°C) (Guchi et al 2014). In Vietnam, collar rot disease is the most devastating diseases in many regions.…”

Section: Introductionmentioning

confidence: 99%

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Identification and characterization of Aspergillus niger causing collar rot of groundnut (Arachis hypogaea)

Nguyen

et al. 2023

Biodiversitas

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Abstract. Nguyen XH, Nguyen TMN, Nguyen DH, Nguyen QC, Cao TT, Pham TTH, Nguyen TTT. 2023. Identification and characterization of Aspergillus niger causing collar rot of groundnut (Arachis hypogaea). Biodiversitas 24: 2556-2562. Groundnut (Arachis hypogaea L.) is an economically important legume crop in Vietnam and many other countries worldwide. Groundnut cultivation is affected by many biotic and abiotic stresses. Among biotic stresses, groundnut is attacked by many fungal, bacterial and viral pathogens. The most harmful fungal diseases are rust, stem rot, collar rot and other soil borne diseases. Collar rot caused by Aspergillus niger is one of the most important disease of groundnut extensive in Vietnam and worldwide. In this study, symptomatic infected plant samples were collected from nine different locations in Quang Tri and Thua Thien Hue provinces, Vietnam Isolated fungal species were identified on the basis of morphological characterization, and molecular level. The pathogenicity of fungal species was confirmed on the basis of Koch's postulates. The result showed that a total of nine fungal strains were isolated from infected groundnut samples. Morphological analysis results showed that all isolates exhibited A. niger characteristics, including black colony, biseriate conidia, hyaline conidiophores and sterigmata. Pathogenicity test showed that all nine A. niger isolates caused collar rot disease in groundnuts. Further molecular identification based on ITS1-4 region nucleotides comparison indicated that selected two isolates, namely QT1 and H17 belonged to A. niger. Further research should be done to find antagonistic microorganisms isolates for the bio-control of A. niger.

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Section: Isolation and Identification Of Fungisupporting

confidence: 75%

Section: Pathogenicity Testmentioning

confidence: 99%

Section: Pathogenicity Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Identification and characterization of Aspergillus niger causing collar rot of groundnut (Arachis hypogaea)

Nguyen

et al. 2023

Biodiversitas

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Isolation and Molecular Characterization of Collar Rot Causing Pathogen Aspergillus niger on Groundnut in Rajasthan, India

Pandey

Chakraborty

2023

IJPSS

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Groundnut, a major pulse crop also grown as an oil seed over 90 countries worldwide, is important to the Indian economy. The states of Andhra Pradesh, Gujarat, Rajasthan and Tamil Nadu are the main producers of groundnut. In 2021, disease incidence with symptoms similar to collar rot was reported from Jaipur district of Rajasthan. The fungal strain was isolated from the collar region of susceptible groundnut variety TAG-24. White colonies with mycelia were observed in 3-4 days which eventually turned dark brown in color. Pathogenicity tests were performed on healthy groundnut and collar rot symptoms developed within 7-8 days of inoculation. Sequencing of PCR products amplified with the18S rRNA (NS1F-NS8R) and ITS (NS1F-ITS4R) primers indicated 99.4% and 100% identity respectively with a reference strain of Aspergillus niger CBS 554.65 (ATCC 16888) in the NCBI-Genebank database. Based on the morphological and molecular characteristics, the fungal pathogen was identified as Aspergillus niger and submitted to Gene Bank with the accession nos. ON954789 and OQ653131. The the culture is submitted to NCMR-NCCS (accession number MCC 9892).

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Occurrence, Pathogenicity and Assessment of Groundnut Genotypes Resistance to Aspergillus niger Inciting Collar Rot Disease

Cited by 2 publications

References 9 publications

Identification and characterization of Aspergillus niger causing collar rot of groundnut (Arachis hypogaea)

Identification and characterization of Aspergillus niger causing collar rot of groundnut (Arachis hypogaea)

Isolation and Molecular Characterization of Collar Rot Causing Pathogen Aspergillus niger on Groundnut in Rajasthan, India

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