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Phenotyping Mediterranean Durum Wheat Landraces for Resistance to Zymoseptoria tritici in Tunisia.
Genes (Basel). 2022 02 16; 13(2)G

Abstract

Durum wheat landraces have huge potential for the identification of genetic factors valuable for improving resistance to biotic stresses. Tunisia is known as a hot spot for Septoria tritici blotch disease (STB), caused by the fungus Zymoseptoria tritici (Z. tritici). In this context, a collection of 3166 Mediterranean durum wheat landraces were evaluated at the seedling and adult stages for STB resistance in the 2016-2017 cropping season under field conditions in Kodia (Tunisia). Unadapted/susceptible accessions were eliminated to reach the final set of 1059 accessions; this was termed the Med-collection, which comprised accessions from 13 countries and was also screened in the 2018-2019 cropping season. The Med-collection showed high frequency of resistance reactions, among which over 50% showed an immune reaction (HR) at both seedling and adult growth stages. Interestingly, 92% of HR and R accessions maintained their resistance levels across the two years, confirming the highly significant correlation found between seedling- and adult-stage reactions. Plant Height was found to have a negative significant effect on adult-stage resistance, suggesting that either this trait can influence disease severity, or that it can be due to environmental/epidemiological factors. Accessions from Italy showed the highest variability, while those from Portugal, Spain and Tunisia showed the highest levels of resistance at both growth stages, suggesting that the latter accessions may harbor novel QTLs effective for STB resistance.

Authors+Show Affiliations

Regional Field Crops Research Center of Beja (CRRGC), BP 350, Beja 9000, Tunisia. CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia. National Agronomic Institute of Tunisia, University of Carthage, Tunis 1082, Tunisia.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia.CRI-Quilamapu, Instituto de Investigaciones Agropecuaria, Chillán 3780000, Chile.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia. Faculty of Sciences of Bizerte, University of Carthage, Jarzouna, Bizerte 7021, Tunisia.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia. Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of Bologna, Via Zamboni 33, 40126 Bologna, Italy.International Maize and Wheat Improvement Center (CIMMYT) km, 45 Carretera México-Veracruz El Batan, Texcoco CP56237, Mexico.International Maize and Wheat Improvement Center (CIMMYT) km, 45 Carretera México-Veracruz El Batan, Texcoco CP56237, Mexico.CRP-Wheat Septoria Precision Phenotyping Platform, Tunis 1082, Tunisia. International Maize and Wheat Improvement Center (CIMMYT) km, 45 Carretera México-Veracruz El Batan, Texcoco CP56237, Mexico.

Pub Type(s)

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

Language

eng

PubMed ID

35205399

Citation

Ben M'Barek, Sarrah, et al. "Phenotyping Mediterranean Durum Wheat Landraces for Resistance to Zymoseptoria Tritici in Tunisia." Genes, vol. 13, no. 2, 2022.
Ben M'Barek S, Laribi M, Kouki H, et al. Phenotyping Mediterranean Durum Wheat Landraces for Resistance to Zymoseptoria tritici in Tunisia. Genes (Basel). 2022;13(2).
Ben M'Barek, S., Laribi, M., Kouki, H., Castillo, D., Araar, C., Nefzaoui, M., Ammar, K., Saint-Pierre, C., & Yahyaoui, A. H. (2022). Phenotyping Mediterranean Durum Wheat Landraces for Resistance to Zymoseptoria tritici in Tunisia. Genes, 13(2). https://doi.org/10.3390/genes13020355
Ben M'Barek S, et al. Phenotyping Mediterranean Durum Wheat Landraces for Resistance to Zymoseptoria Tritici in Tunisia. Genes (Basel). 2022 02 16;13(2) PubMed PMID: 35205399.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phenotyping Mediterranean Durum Wheat Landraces for Resistance to Zymoseptoria tritici in Tunisia. AU - Ben M'Barek,Sarrah, AU - Laribi,Marwa, AU - Kouki,Hajer, AU - Castillo,Dalma, AU - Araar,Chayma, AU - Nefzaoui,Meriem, AU - Ammar,Karim, AU - Saint-Pierre,Carolina, AU - Yahyaoui,Amor Hassine, Y1 - 2022/02/16/ PY - 2021/12/20/received PY - 2022/01/21/revised PY - 2022/02/09/accepted PY - 2022/2/25/entrez PY - 2022/2/26/pubmed PY - 2022/2/26/medline KW - Mediterranean landraces KW - Zymoseptoria tritici KW - adult KW - agronomic traits KW - diversity KW - durum wheat KW - phenotyping KW - seedling KW - sources of resistance JF - Genes JO - Genes (Basel) VL - 13 IS - 2 N2 - Durum wheat landraces have huge potential for the identification of genetic factors valuable for improving resistance to biotic stresses. Tunisia is known as a hot spot for Septoria tritici blotch disease (STB), caused by the fungus Zymoseptoria tritici (Z. tritici). In this context, a collection of 3166 Mediterranean durum wheat landraces were evaluated at the seedling and adult stages for STB resistance in the 2016-2017 cropping season under field conditions in Kodia (Tunisia). Unadapted/susceptible accessions were eliminated to reach the final set of 1059 accessions; this was termed the Med-collection, which comprised accessions from 13 countries and was also screened in the 2018-2019 cropping season. The Med-collection showed high frequency of resistance reactions, among which over 50% showed an immune reaction (HR) at both seedling and adult growth stages. Interestingly, 92% of HR and R accessions maintained their resistance levels across the two years, confirming the highly significant correlation found between seedling- and adult-stage reactions. Plant Height was found to have a negative significant effect on adult-stage resistance, suggesting that either this trait can influence disease severity, or that it can be due to environmental/epidemiological factors. Accessions from Italy showed the highest variability, while those from Portugal, Spain and Tunisia showed the highest levels of resistance at both growth stages, suggesting that the latter accessions may harbor novel QTLs effective for STB resistance. SN - 2073-4425 UR - https://www.unboundmedicine.com/medline/citation/35205399/Phenotyping_Mediterranean_Durum_Wheat_Landraces_for_Resistance_to_Zymoseptoria_tritici_in_Tunisia_ L2 - https://www.mdpi.com/resolver?pii=genes13020355 DB - PRIME DP - Unbound Medicine ER -