Screening of Rice Germplasm Against<i>Ustilaginoidea virens</i>, The Incitant of False Smut

Rani, Ritu; Sharma, Vineet K.; Lore, Jagjeet Singh; Pannu, P.P.S.; Kaur, Yesmin

doi:10.5958/2395-146x.2016.00026.0

Cited by 6 publications

(6 citation statements)

References 3 publications

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“…were in accordance with the findings of Rani et al (2016). So, these traits could be used further along with disease severity in selection for the breeding program for false smut resistance.…”

Section: Discussionsupporting

confidence: 87%

Genetic dissection of false smut resistance in rice through Genome Wide Association Mapping

Govindaiah

Selvaraj

Kadirimangalam

et al. 2022

Journal of Phytopathology

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The present investigation was performed to identify resistance sources and to unravel the genomic regions controlling false smut resistance by genome‐wide association mapping (GWAS) in 150 diverse rice accessions. This study revealed 13 highly resistant, 9 resistant, 119 moderately resistant and 9 moderately susceptible genotypes. Correlation analysis revealed that the percentage of infected florets, percentage of infected tillers, percentage of infected plants and spikelet sterility percentage showed significant association with disease severity. GWAS was performed using GLM, GLM+Q and MLM+Q+K with 214 SSR markers and resulted in 16 significant marker–trait associations with the traits, viz., percentage of infected plants, percentage of infected tillers, percentage of infected florets and disease severity. This study resulted in two major QTLs for the percentage of infected florets in the marker RM16131 (126.9 cM) and RM44 (60.9 cM) on chromosomes 3 and 8 and these can be further used in marker‐assisted selection. Several genes were portrayed around major QTL regions and further validation is needed to identify candidate genes for false smut resistance.

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Section: Discussionsupporting

confidence: 87%

Genetic dissection of false smut resistance in rice through Genome Wide Association Mapping

Govindaiah

Selvaraj

Kadirimangalam

et al. 2022

Journal of Phytopathology

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“…He observed that rice cultivar Sakha 102 was highly resistant while Giza 171 was susceptible to false smut in different growing seasons. Recently, the high genetic variations among the rice germplasm lines (collected from International Rice Research Institute and PAU) in response to false smut incidence have also been observed (Hiremath et al., 2021; Rani et al., 2016). Hiremath et al.…”

Section: Discussionmentioning

confidence: 99%

Prevention of false smut (Ustilaginoidea virens) on rice hybrids and pure‐line cultivars by manipulating planting date

Lore

Jain

Kumar

et al. 2021

Journal of Phytopathology

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False smut of rice is an emerging disease and a potential threat to hybrids and inbred rice cultivars grown in Asian countries. The aim of the study was to avoidance of false smut incidence by manipulating the planting date in rice. The genotypes including five rice hybrids, namely, KRH 2, US 312, DRRH 3, PHB 71, PA 6644 and three pure‐line cultivars, namely, BPT 5204, PR 116 and HKR 47 were evaluated in different planting dates (PD1: June 25, PD2: July 5, PD3: July 15). All the tested genotypes flowered during 100–110 days, except BPT 5204, which took 115 days to flower. False smut was quantified on rice genotypes using different disease variables such as infected panicle/plant, total false smut ball/plant and disease score. Disease variables were significantly and positively correlated to each other. The significant interaction between the genotype and planting date was observed. The early planting date (June 25) showed higher incidence than late planting (July 15). Overall mean of disease variables was higher in hybrids than pure‐line cultivars. Weather factors such as rainfall, rainy days and high relative humidity during the flowering period were favourable for disease development. The manipulation in the planting date can be utilized as a potential non‐monetary cultural approach for minimizing the incidence of false smut in rice. Cultivar HKR 47 with lower disease variables in different planting date can be used in diseases resistance breeding program.

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“…The rice panicles were sprayed with sterile distilled water served as control and RH maintain 95 % a week. The maximum percent of infection and smut balls per panicle observed in genotype PR-116 (26.56 % and 1.6) (Rani et al 2016) [92] . Nevertheless, the conidia and suspension of hyphal fragments obtained by breaking the mycelia with a high-speed blender were also used as inoculum in some lab (Lu et al 2009) [77] .…”

Section: Inoculation Methodsmentioning

confidence: 99%

“…They are different types of smut balls, density, and distribution on infected panicles Ikegami (1961) [56] classified smut balls by colour as yellow, yellowish-green, greenishyellow and green; the colour was essentially age-dependent, the aged the balls were, the darker was the colour. Some literature term yellow balls as orange or orange-yellow (Rani, 2014) [92] and green as greenish-black or black (Rani, 2016) [93] . Most literature presented dark balls (green or greenishblack) as the advance stage (by colour change over time) of light-colored (yellow or orange) balls (Rani, 2014) [93] .…”

Section: Types Of Smut Ballmentioning

confidence: 99%

“…Channamallikarjuna et al (2010) [26] suggested that the broad spectrum and durable disease resistance for sheath blight resistance might be associated with chitinase gene cluster. Rani et al (2016) [92] evaluated 31 germplasm line for two year against U. virens. In first year, 8 inbreed line were found to be completely free from disease.…”

Section: Management Source Of Rfs Resistance Sourcementioning

confidence: 99%

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Invention mechanisms and management source of false smut of rice caused by Ustilaginoidea virens- A Review

Kumar¹,

Sahani²,

Kumari³

et al. 2020

Int. J. Chem. Stud.

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False smut of rice caused by Ustilaginoidea virens (Cooke), perfect sexual stage Villosiclava virens. Rice False Smut (RFS) early know as a minor disease but this time it is very severe in the majority of ricegrowing areas around the world, as epidemics form. The disease incidence ranged from 5-85% and major grain yield loss of 0.2% to 49% respectively in terms reduction in quality as well as quantity threatens food safety due to its production of mycotoxin. After flowering, its symptoms are appeared when the fungus transforms into globose structures or yellowed carbonaceous masses of individual grains unfit for consumption. The infection cycle and invasion mechanism, including the primary and secondary source of RFS infection involved different factors affecting for invention mechanisms of disease occurrence, including the infection time and pathway. Due to knowledge of epidemiology and invention mechanisms, resistance source, disease aggravates, proper management strategies needed to be framed to control the false smut disease. Improvement in completing the management source of false smut needs more emphasis. This review summarizes the present status of RFS, biochemical mechanism invention, resistant source of cultivars, and management of false smut in rice.

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Screening of Rice Germplasm AgainstUstilaginoidea virens, The Incitant of False Smut

Cited by 6 publications

References 3 publications

Genetic dissection of false smut resistance in rice through Genome Wide Association Mapping

Genetic dissection of false smut resistance in rice through Genome Wide Association Mapping

Prevention of false smut (Ustilaginoidea virens) on rice hybrids and pure‐line cultivars by manipulating planting date

Invention mechanisms and management source of false smut of rice caused by Ustilaginoidea virens- A Review

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