Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Article Salt Tolerance Potential of Selected Solanum Pennellii Introgression Lines: Unique Shoot and Root Responses(Wiley, 2025) Yildiz, Hatice Selale; Doganlar, Sami; Frary, AnneSalinity stress affects agricultural lands worldwide, causing serious yield losses. Investigation of the salinity response and tolerance mechanisms of crop plants and their wild relatives is important for developing tolerant varieties. In this study, three Solanum pennellii introgression lines (IL2-5, IL7-4-1, IL8-3), reported to be tolerant to abiotic stress, were investigated for their physiological and molecular responses to severe salinity (200 mM NaCl). The findings emphasized the variety of different responses that even highly genetically similar lines can have to stress. In IL2-5, a lack of significant root and shoot growth reduction due to salinity was associated with the up-regulation of vacuolar ion transporter genes (NHX1 and NHX3) and the lowest Na+ and Cl- accumulation in leaves, while beneficial K+ levels were preserved. In IL7-4-1, lateral root development was exceptionally strong compared to the other lines, with high Na+ and Cl- accumulation in leaves due to this unique root architecture. Despite this, the negative effects were lower on IL7-4-1's shoot growth than in IL8-3 and the control cultivar M82 due to effective reactive oxygen species management and increased superoxide gene expression. IL8-3's growth response was most similar to M82; however, it was better able to maintain beneficial K+ levels under salt stress. Overall, it was revealed that S. pennellii has multiple salt tolerance mechanisms associated with specific chromosomal segments and unique plant architecture. In addition to contributing to a better understanding of the mechanisms of salinity tolerance, these findings provide important information for increasing tolerance through targeted breeding.Article Citation - WoS: 1Citation - Scopus: 1Association Mapping and Candidate Gene Identification for Yield Traits in European Hazelnut (<i>corylus Avellana</I> L.)(John Wiley & Sons Ltd, 2024) Baytar, Asena Akkoese; Yanar, Ertugrul Gazi; Frary, Anne; Doganlar, SamiEuropean hazelnut (Corylus avellana L.) is an important nut crop due to its nutritional benefits, culinary uses, and economic value. T & uuml;rkiye is the leading producer of hazelnut, followed by Italy and the United States. Quantitative trait locus studies offer promising opportunities for breeders and geneticists to identify genomic regions controlling desirable traits in hazelnut. A genome-wide association analysis was conducted with 5,567 single nucleotide polymorphisms on a Turkish core set of 86 hazelnut accessions, revealing 189 quantitative trait nucleotides (QTNs) associated with 22 of 31 traits (p < 2.9E-07). These QTNs were associated with plant and leaf, phenological, reproductive, nut, and kernel traits. Based on the close physical distance of QTNs associated with the same trait, we identified 23 quantitative trait loci. Furthermore, we identified 23 loci of multiple QTs comprising chromosome locations associated with more than one trait at the same position or in close proximity. A total of 159 candidate genes were identified for 189 QTNs, with 122 of them containing significant conserved protein domains. Some candidate matches to known proteins/domains were highly significant, suggesting that they have similar functions as their matches. This comprehensive study provides valuable insights for the development of breeding strategies and the improvement of hazelnut and enhances the understanding of the genetic architecture of complex traits by proposing candidate genes and potential functions.