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Characterization of Mediterranean Durum Wheat for Resistance to Pyrenophora tritici-repentis.
Genes (Basel). 2022 02 11; 13(2)G

Abstract

Tan spot (TS), caused by the fugus Pyrenophora tritici-repentis (Ptr), has gained significant importance in the last few years, thereby representing a threat to wheat production in all major wheat-growing regions, including Tunisia. In this context, we evaluated a Mediterranean collection of 549 durum wheat accessions under field conditions for resistance to Ptr over two cropping seasons in Jendouba (Tunisia), a hot spot for Ptr. The relative disease severities showed significant phenotypic variation from resistance to susceptibility. The correlation between disease scores over the two trials was significant, as 50% of the accessions maintained good levels of resistance (resistant-moderately resistant). Seedling and adult-stage reactions were significantly correlated. The ANOVA analysis revealed that the genotype term is highly significant at the adult stage, thus emphasizing the high genetic variability of the tested accessions. Reaction-type comparison among and between countries revealed a high diversity of TS resistance. Plant height (PH) was negatively correlated to disease scores, indicating that PH might either have a significant effect on TS severity or that it can be a potential disease escape trait. The evaluation of this collection allowed for the identification of potential diverse resistance sources to Ptr that can be incorporated in breeding programs.

Authors+Show Affiliations

LR14AGR01 Laboratory of Genetic and Cereal Breeding, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia. CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia. International Maize and Wheat Improvement Center (CIMMYT), Carretera México-Veracruz, El Batan, Texcoco 56130, Mexico.LR14AGR01 Laboratory of Genetic and Cereal Breeding, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia. CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia.LR14AGR01 Laboratory of Genetic and Cereal Breeding, National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia. Regional Field Crops Research Center of Beja (CRRGC) BP 350, Béja 9000, Tunisia.

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

35205379

Citation

Laribi, Marwa, et al. "Characterization of Mediterranean Durum Wheat for Resistance to Pyrenophora Tritici-repentis." Genes, vol. 13, no. 2, 2022.
Laribi M, Yahyaoui AH, Abdedayem W, et al. Characterization of Mediterranean Durum Wheat for Resistance to Pyrenophora tritici-repentis. Genes (Basel). 2022;13(2).
Laribi, M., Yahyaoui, A. H., Abdedayem, W., Kouki, H., Sassi, K., & Ben M'Barek, S. (2022). Characterization of Mediterranean Durum Wheat for Resistance to Pyrenophora tritici-repentis. Genes, 13(2). https://doi.org/10.3390/genes13020336
Laribi M, et al. Characterization of Mediterranean Durum Wheat for Resistance to Pyrenophora Tritici-repentis. Genes (Basel). 2022 02 11;13(2) PubMed PMID: 35205379.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characterization of Mediterranean Durum Wheat for Resistance to Pyrenophora tritici-repentis. AU - Laribi,Marwa, AU - Yahyaoui,Amor Hassine, AU - Abdedayem,Wided, AU - Kouki,Hajer, AU - Sassi,Khaled, AU - Ben M'Barek,Sarrah, Y1 - 2022/02/11/ PY - 2021/12/23/received PY - 2022/02/03/revised PY - 2022/02/04/accepted PY - 2022/2/25/entrez PY - 2022/2/26/pubmed PY - 2022/2/26/medline KW - Mediterranean KW - Tunisia KW - durum wheat KW - landrace KW - phenotypic diversity KW - plant height KW - resistance KW - tan spot JF - Genes JO - Genes (Basel) VL - 13 IS - 2 N2 - Tan spot (TS), caused by the fugus Pyrenophora tritici-repentis (Ptr), has gained significant importance in the last few years, thereby representing a threat to wheat production in all major wheat-growing regions, including Tunisia. In this context, we evaluated a Mediterranean collection of 549 durum wheat accessions under field conditions for resistance to Ptr over two cropping seasons in Jendouba (Tunisia), a hot spot for Ptr. The relative disease severities showed significant phenotypic variation from resistance to susceptibility. The correlation between disease scores over the two trials was significant, as 50% of the accessions maintained good levels of resistance (resistant-moderately resistant). Seedling and adult-stage reactions were significantly correlated. The ANOVA analysis revealed that the genotype term is highly significant at the adult stage, thus emphasizing the high genetic variability of the tested accessions. Reaction-type comparison among and between countries revealed a high diversity of TS resistance. Plant height (PH) was negatively correlated to disease scores, indicating that PH might either have a significant effect on TS severity or that it can be a potential disease escape trait. The evaluation of this collection allowed for the identification of potential diverse resistance sources to Ptr that can be incorporated in breeding programs. SN - 2073-4425 UR - https://www.unboundmedicine.com/medline/citation/35205379/Characterization_of_Mediterranean_Durum_Wheat_for_Resistance_to_Pyrenophora_tritici_repentis_ L2 - https://www.mdpi.com/resolver?pii=genes13020336 DB - PRIME DP - Unbound Medicine ER -