Physiologic specialization and shift in Puccinia triticina pathotypes on wheat in Indian subcontinent during 2013–2016

Bhardwaj, S. C.; Gangwar, O. P.; Prasad, Pramod; Kumar, Subodh; Khan, Hanif; Gupta, Neha

doi:10.1007/s42360-018-00110-9

Cited by 21 publications

(14 citation statements)

References 8 publications

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“…Care was taken to select pathotypes with varied avirulence and virulence structure which would knock down most of the genes in present-day wheat material (Bhardwaj, 2011). Keeping the aforesaid points into consideration seven pathotypes of Pgt (Prasad et al, 2018), five pathotypes of Pst (Gangwar et al, 2019), and six pathotypes of Pt (Bhardwaj et al, 2019a) were selected for screening wheat material at seedling stage under controlled conditions. The optimum conditions ensure foolproof evaluation and selection of rust resistant material.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Association Studies in Diverse Spring Wheat Panel for Stripe, Stem, and Leaf Rust Resistance

Kumar

Chhokar

et al. 2020

Front. Plant Sci.

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Section: Introductionmentioning

confidence: 99%

Genome-Wide Association Studies in Diverse Spring Wheat Panel for Stripe, Stem, and Leaf Rust Resistance

Kumar

Chhokar

et al. 2020

Front. Plant Sci.

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“…tritici (Pst), observed differences in the behavior of the isolates when submitted to different concentrations of propiconazole (0.0 ×, 0.01 ×, 0.02 ×, 0.04 ×, 0.08 ×, 0.10 ×, 0.15 ×, 0.20 × and 1.0 ×) and pyraclostrobin (0.0 ×, 0.00075 ×, 0.00100 ×, 0.00150 ×, 0.00200 ×, 0.00300 ×, 0.00400 ×, 0.00600 ×, 0.00750 ×, and 1.0 ×), thus confirming the first report of differences in Pst sensitivity to these fungicides in the United States. The sources of genetic resistance to Puccinia triticina constitute an important tool in disease management in the wheat production system, but when used alone, there is a tendency of this technology to be broken up to five years (Bhardwaj et al 2019 ), reinforcing the importance of proper use of chemical control, delaying the occurrence of focus of insensitivity of the pathogen and maintaining the fungicides with high control efficiency in the market.…”

Section: Resultsmentioning

confidence: 99%

Association of multisite and site-specific fungicides in the control of Puccinia triticina and its effects on wheat yield

Sacon¹,

Netto²,

Gallina³

et al. 2019

Commun. Plant Sci.

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The wheat (Triticum aestivum L.) crop has great importance in the national context, the diseases are one of the main factors of losses, which emphasizes the importance of the pest system Triticum aestivum L. x Puccinia triticina Eriks. The aim of this study was to evaluate the efficiency of the combination of site-specific and multisite fungicides in the control of wheat leaf rust and its effects on crop yield. The evaluated treatments were: Control (absence of fungicide application); T + P (trifloxystrobin + prothioconazole); P + F (pyraclostrobin + fluxapyroxad); T + P + Mb (trifloxystrobin + prothioconazole + mancozeb); P + F + Mb (pyraclostrobin + fluxapyroxad + mancozeb) and Mb (mancozeb). Greater control of the disease was observed with the association of fungicides, there is a correlation between control and crop productivity, especially in harvest with greater severity of the disease. Highlighted Conclusions 1. At low severity the wheat leaf rust does not present damage on crop productivity. 2. The association of multisite and site-specific fungicides increases the disease control effect. 3. The application fungicide program with the association of different a.i. maintains the crop yield potential. 4. The disease control has a positive effect on the yield components, on the other hand, the AUDPC presents a negative correlation.

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“…Subsequently, three new pathotypes with additional virulence on Riebesel47/51, SuwonXOmar, Yr11, Yr14, and Yr24 have been identified [8]. Pathotype 121R63 of P. triticina predominated for more than 20 years, but in 2016 a shift in favor of pathotype 121R60-1 occurred [9]. Many virulent pathotypes have been reported in P. graminis tritici, however, little change has occurred in the predominance of pathotypes.…”

Section: Identification Of New Pathotypes and Mapping The Distributiomentioning

confidence: 99%

Status of Wheat Rust Research and Progress in Rust Management-Indian Context

et al. 2019

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The rusts of wheat, caused by three species of Puccinia, are very devastating diseases and are major biotic constraints in efforts to sustain wheat production worldwide. Their capacity to spread aerially over long distances, rapid production of infectious uredospores, and abilities to evolve new pathotypes, makes the management of wheat pathogens a very challenging task. The development and deployment of resistant wheat varieties has proven to be the most economic, effective and efficient means of managing rust diseases. Rust resistance used in wheat improvement has included sources from the primary gene pool as well as from species distantly related to wheat. The 1BL/1RS translocation from cereal rye was used widely in wheat breeding, and for some time provided resistance to the wheat leaf rust, stripe rust, and stem rust pathogens conferred by genes Lr26, Yr9, and Sr31, respectively. However, the emergence of virulence for all three genes, and stripe rust resistance gene Yr27, has posed major threats to the cultivation of wheat globally. To overcome this threat, efforts are going on worldwide to monitor rust diseases, identify rust pathotypes, and to evaluate wheat germplasm for rust resistance. Anticipatory breeding and the responsible deployment of rust resistant cultivars have proven to be effective strategies to manage wheat rusts. Efforts are still however being made to decipher the recurrence of wheat rusts, their epidemiologies, and new genomic approaches are being used to break the yield barriers and manage biotic stresses such as the rusts. Efficient monitoring of pathotypes of Puccinia species on wheat, identification of resistance sources, pre-emptive breeding, and strategic deployment of rust resistant wheat cultivars have been the key factors to effective management of wheat rusts in India. The success in containing wheat rusts in India can be gauged by the fact that we had no wheat rust epiphytotic for nearly last five decades. This publication provides a comprehensive overview of the wheat rust research conducted in India.

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Physiologic specialization and shift in Puccinia triticina pathotypes on wheat in Indian subcontinent during 2013–2016

Cited by 21 publications

References 8 publications

Genome-Wide Association Studies in Diverse Spring Wheat Panel for Stripe, Stem, and Leaf Rust Resistance

Genome-Wide Association Studies in Diverse Spring Wheat Panel for Stripe, Stem, and Leaf Rust Resistance

Association of multisite and site-specific fungicides in the control of Puccinia triticina and its effects on wheat yield

Status of Wheat Rust Research and Progress in Rust Management-Indian Context

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