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Article

Genotype-Specific Antioxidant Responses and Assessment of Resistance Against Sclerotinia sclerotiorum Causing Sclerotinia Rot in Indian Mustard

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Department of Genetics and Plant Breeding, Oilseed Section, CCS Haryana Agricultural University, Hisar, Haryana 125004, India
2
Biochemistry Laboratory, Department of Genetics and Plant Breeding, Cotton Section, CCS Haryana Agricultural University, Hisar, Haryana 125004, India
3
Department of Biochemistry, College of Basic Sciences and Humanities, CCS Haryana Agricultural University, Hisar, Haryana 125004, India
4
Department of Botany, Maharshi Dayanand University, Rohtak, Haryana 124001, India
*
Authors to whom correspondence should be addressed.
Pathogens 2020, 9(11), 892; https://doi.org/10.3390/pathogens9110892
Received: 2 September 2020 / Revised: 12 October 2020 / Accepted: 22 October 2020 / Published: 27 October 2020
(This article belongs to the Special Issue Soil-Borne Plant Pathogenic Fungi)
Productivity of Indian mustard, an important oilseed crop of India, is affected by several pathogens. Among them, the hemibiotroph Sclerotinia sclerotiorum, which causes sclerotinia rot disease, is the most devastating fungal pathogen causing up to 90% yield losses. The availability of host resistance is the only efficient approach to control and understand the host–pathogen interaction. Therefore, the present investigation was carried out using six Indian mustard genotypes with contrasting behavior towards sclerotinia rot to study the antioxidant resistance mechanism against S. sclerotiorum. The plants at post-flowering stage were inoculated with five-day-old pure culture of S. sclerotiorum using artificial stem inoculation method. Disease evaluation revealed significant genotypic differences for mean lesion length among the tested genotypes, where genotype DRMR 2035 was found highly resistant, while genotypes RH 1569 and RH 1633 were found highly susceptible. The resistant genotypes had more phenolics and higher activities of peroxidase, catalase and polyphenol oxidase which provide them more efficient and strong antioxidant systems as compared with susceptible genotypes. Studies of antioxidative mechanisms validate the results of disease responses. View Full-Text
Keywords: Sclerotinia sclerotiorum; Indian mustard; lesion length; resistance; susceptible; antioxidant system; genotypes Sclerotinia sclerotiorum; Indian mustard; lesion length; resistance; susceptible; antioxidant system; genotypes
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MDPI and ACS Style

Singh, M.; Avtar, R.; Pal, A.; Punia, R.; Singh, V.K.; Bishnoi, M.; Singh, A.; Choudhary, R.R.; Mandhania, S. Genotype-Specific Antioxidant Responses and Assessment of Resistance Against Sclerotinia sclerotiorum Causing Sclerotinia Rot in Indian Mustard. Pathogens 2020, 9, 892. https://doi.org/10.3390/pathogens9110892

AMA Style

Singh M, Avtar R, Pal A, Punia R, Singh VK, Bishnoi M, Singh A, Choudhary RR, Mandhania S. Genotype-Specific Antioxidant Responses and Assessment of Resistance Against Sclerotinia sclerotiorum Causing Sclerotinia Rot in Indian Mustard. Pathogens. 2020; 9(11):892. https://doi.org/10.3390/pathogens9110892

Chicago/Turabian Style

Singh, Manjeet, Ram Avtar, Ajay Pal, Rakesh Punia, Vivek K. Singh, Mahavir Bishnoi, Anoop Singh, Raju R. Choudhary, and Shiwani Mandhania. 2020. "Genotype-Specific Antioxidant Responses and Assessment of Resistance Against Sclerotinia sclerotiorum Causing Sclerotinia Rot in Indian Mustard" Pathogens 9, no. 11: 892. https://doi.org/10.3390/pathogens9110892

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