Evidence map›Paper›PMID 37561326›Full record

ArticleMolecular biology reports2023

Heterologous expression and characterization of ToxA1 haplotype from India and its interaction with Tsn1 for spot blotch susceptibility in spring wheat.

Ranjan Kumar Chaubey, Dharamsheela Thakur, Sudhir Navathe, Sandeep Sharma, Vinod Kumar Mishra, Pawan Kumar Singh, Ramesh Chand

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Article in Molecular biology reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1 citing paper in PubMed.

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5 · Who and what money

Authors and funding

7 authors.

Ranjan Kumar ChaubeyInstitute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India.
Dharamsheela ThakurDepartment of Molecular Biology and Genetic Engineering, Bihar Agricultural University, Sabour, Bhagalpur, 813210, India.
Sudhir NavatheAgharkar Research Institute, G. G. Agarkar Road, Pune, 411004, India. snavathe@aripune.org.ORCID http://orcid.org/0000-0002-8040-5563
Sandeep SharmaInstitute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India.
Vinod Kumar MishraInstitute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India.
Pawan Kumar SinghInternational Maize and Wheat Improvement Center (CIMMYT), 56237, Texcoco, Mexico.
Ramesh ChandInstitute of Agricultural Sciences, Banaras Hindu University, Varanasi, 221005, India. rc_vns@yahoo.co.in.

Funding

Science and Engineering Research Board (SERB) CRG/2021/007211
6 · The paper itself

Abstract

backgroundToxA, a necrotrophic effector protein, is present in the genome of fungal species like Parastagnospora nodorum, Pyrenophora tritici-repentis and Bipolaris sorokiniana. Tsn1 is the sensitivity gene in the host whose presence indicates more susceptibility to ToxA carrying pathogen, and ToxA-Tsn1 interaction follows an inverse gene-for-gene relationship. METHODS AND

resultsThe present study involved cloning and expressing the ToxA1 haplotype from B. sorokiniana. It was found that the amplicon exhibited an expected product size of 471 bp. Sequence analysis of the ToxA1 nucleotide sequence revealed the highest identity, 99.79%, with P. tritici-repentis. The protein expression analysis showed peak expression at 16.5 kDa. Phylogenetic analysis of the ToxA1 sequence from all the Bipolaris isolates formed an independent clade along with P. tritici-repentis and diverged from P. nodorum. ToxA-Tsn1 interaction was studied in 18 wheat genotypes (11 Tsn1 and 7 tsn1) at both seedling and adult stages, validating the inverse gene-for-gene relationship, as the toxin activity was highest in the K68 genotype (Tsn1) and lowest in WAMI280 (tsn1).

conclusionThe study indicates that the haplotype ToxA1 is prevailing in the Indian population of B. sorokiniana. It would be desirable for wheat breeders to select genotypes with tsn1 locus for making wheat resistant to spot blotch.

Indexed as

Plant DiseasesTriticumHaplotypesIndiaPhylogenyBipolaris sorokinianaEffector-triggered susceptibilityInverse gene-for-gene relationshipSensitivity genesToxA1Triticum aestivum

Identifiers

PMID37561326

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