分析图尔基耶濒危狭长地带特有物种 Soda grandis (Freitag, Vural & N. Adıgüzel) Akhani 的种群遗传学和生态特征

IF 1.6 3区 农林科学 Q2 AGRONOMY
Merve Yıldırım, Gül Nilhan Tuğ, Ahmet Emre Yaprak
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引用次数: 0

摘要

Soda grandis (Freitag, Vural & N. Adıgüzel) Akhani 属于苋科,是一种卤叶植物,在农业中具有巨大的前景和遗传潜力,尤其是作为一种基因来源。它只在石膏和泥灰质土壤中狭小分布,是图尔基耶特有的极度濒危的一年生物种。研究人员利用简单序列重复(ISSR)标记对该物种四个自然种群中 92 个个体的遗传多样性水平和模式进行了调查。此外,还对研究地区的土壤样本和生物气候数据进行了物理和化学分析。在物种水平上,多态带的百分比为 22.5%。内氏基因多样性为 0.085,香农信息指数为 0.126。在种群水平上,多态带的百分比为 2.12%,内氏基因多样性为 0.007,香农信息指数为 0.011。遗传分化系数表明,总遗传变异的大部分发生在种群之间(91.9%)。分子方差分析(AMOVA)显示,93%的遗传变异归因于种群间的差异,其余 7%发生在种群内部。基因流非常低(Nm = 0.044)。曼特尔检验表明,遗传距离和地理距离之间存在显著的正相关和弱相关(r = 0.296,p < 0.001)。树枝图采用算术平均非加权配对组法(UPGMA)绘制,并通过主坐标分析(PCoA)支持结果。STRUCTURE 分析表明有三个不同的遗传群体(ΔK = 3)。由于种群间的遗传差异很大,因此评估亚种间的差异并实施原地保护工作至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Analysis of the population genetics and the ecological characteristics of the endangered narrow endemic Soda grandis (Freitag, Vural & N. Adıgüzel) Akhani from Türkiye

Analysis of the population genetics and the ecological characteristics of the endangered narrow endemic Soda grandis (Freitag, Vural & N. Adıgüzel) Akhani from Türkiye

Soda grandis (Freitag, Vural & N. Adıgüzel) Akhani, from the Amaranthaceae family, is a halophyte plant with significant promise and genetic potential in agriculture, especially as a source of genes. It is narrowly distributed only in gypsum and marly soils and a critically endangered annual species endemic to Türkiye. The level and pattern of genetic diversity in 92 individuals from four natural populations of the species were investigated using inter-simple sequence repeat (ISSR) markers. Physical and chemical analyses of soil samples and bioclimatic data of the study areas were conducted. At the species level, the percentage of polymorphic bands was 22.5%. Nei’s gene diversity was 0.085, and Shannon’s information index was 0.126. At populations level, the percentage of polymorphic bands = 2.12%, Nei’s gene diversity = 0.007, and Shannon’s information index = 0.011. The genetic differentiation coefficient indicated that the majority of the total genetic variability occurred among populations (91.9%). Analysis of molecular variance (AMOVA) revealed that 93% of the genetic variance was attributable to differences among populations, while the remaining 7% occurred within populations. The gene flow was very low (Nm = 0.044). The Mantel test revealed a significant, positive, and weak correlation between genetic and geographic distance (r = 0.296, p < 0.001). The dendrograms were created using the Unweighted Pair Group Method with Arithmetic Mean (UPGMA), and the results were supported through Principal Coordinate Analyses (PCoA). STRUCTURE analysis indicated three distinct genetic groups (ΔK = 3). Given the high genetic differentiation among populations, it is crucial to evaluate sub-speciation and implement in situ conservation efforts.

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来源期刊
Genetic Resources and Crop Evolution
Genetic Resources and Crop Evolution 农林科学-农艺学
CiteScore
4.10
自引率
10.00%
发文量
178
审稿时长
3 months
期刊介绍: Genetic Resources and Crop Evolution is devoted to all aspects of plant genetic resources research. It publishes original articles in the fields of taxonomical, morphological, physiological, biochemical, genetical, cytological or ethnobotanical research of genetic resources and includes contributions to gene-bank management in a broad sense, that means to collecting, maintenance, evaluation, storage and documentation. Areas of particular interest include: -crop evolution -domestication -crop-weed relationships -related wild species -history of cultivated plants including palaeoethnobotany. Genetic Resources and Crop Evolution also publishes short communications, e.g. newly described crop taxa, nomenclatural notes, reports of collecting missions, evaluation results of gene-bank material etc. as well as book reviews of important publications in the field of genetic resources. Every volume will contain some review articles on actual problems. The journal is the internationalized continuation of the German periodical Die Kulturpflanze, published formerly by the Institute of Plant Genetics and Crop Plant Research at Gatersleben, Germany. All contributions are in the English language and are subject to peer reviewing.
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