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    Assessment of genetic diversity based on agro-morphological traits and ISSR molecular markers in einkorn wheat (Triticum monococcum ssp. monococcum) landrace populations from Turkey
    (Pamukkale University, 2023) Zommita, Suliman; Ozbek, Ozlem; Yildiz, Gulgez Gokce; Unuvar, Omer Can; Unlu, Ercan Selcuk; Zencirci, Nusret
    The aim of this study is to investigate genetic diversity in 48 einkorn (Triticum monococcum L. ssp. monococcum) landraces grown in agricultural areas of Bolu and Kastamonu. Therefore, variation in seven agro-morphological traits was investigated. Agro-morphological traits such as leaf weight (mg), coleoptile length (cm), root number (n), root length (cm), fresh root weight (mg), and dry root weight (mg) were examined by the coefficient of variation, ANOVA, and principal components analysis. The highest coefficient of variation (%) was observed in fresh root weight (FRW = 52.09%), while the lowest was in leaf weight (LW = 8.9%). Principal Component Analysis (PCA) was calculated as 76.93% variation in two main components. For molecular characterization, data obtained with iSSR primers were analyzed with the population genetics analysis program PopGene (ver. 1.32). According to PopGene results, the mean number of alleles, the mean number of effective alleles, and average genetic diversity values were calculated as na = 2, nea = 1.33, and h = 0.13, respectively. Among the agro-morphological traits, germination power, root number, and coleoptile length appeared to be reliable traits. The results show that the use of morphological characters alone for genetic diversity in populations is not sufficient to determine the difference between populations and their genetic structure. © 2023 The authors.
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    De novo transcriptome assembly reveals three alternative oxidase encoding genes in Nymphaea alba L.
    (2022) Ünlü, Ercan; Yildiz, Gulgez Gokce
    Water lilies are aquatic, ornamental and economically valuable plants classified under Nymphaea genus. Nymphaea alba L., white water lily, has a special focus since it is a member of basal angiosperms. Alternative oxidase (AOX) proteins are the terminal oxidases in the electron transport chain of plants. Identification of alternative oxidase encoding genes for basal angiosperms is important to increase the quality of phylogenetic studies. However, AOX encoding genes were yet to be discovered for N. alba. In this study, we aimed to identify alternative oxidase encoding genes in N. alba by performing transcriptome analysis. Annotation of 272,934 unigenes with Trinotate tool revealed 77 transcripts with AOX domains characterized in known alternative oxidases. Blast analysis of these 77 sequences with known AOX proteins revealed three distinct AOX genes (AOX1, AOX2 and AOX4) in N. alba. After in silico subcellular localization analysis of three identified AOX proteins, AOX1, AOX2 are predicted as mitochondrial while AOX4 is a plastidic alternative oxidase protein. Template-based structural modeling results showed that all identified proteins are statistically similar to known structure models of corresponding AOXs.
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