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环境因素对墨西哥破碎灌丛中生长的种群遗传和化学多样性的影响

Influence of Environmental Factors on the Genetic and Chemical Diversity of Populations Growing in Fragmented Shrublands from Mexico.

作者信息

Pacheco-Hernández Yesenia, Villa-Ruano Nemesio, Lozoya-Gloria Edmundo, Barrales-Cortés César Augusto, Jiménez-Montejo Fabiola Eloisa, Cruz-López María Del Carmen

机构信息

Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional, Tlaxcala 90700, Mexico.

CONACyT-Centro Universitario de Vinculación y Transferencia de Tecnología, BUAP, Puebla 72570, Mexico.

出版信息

Plants (Basel). 2021 Feb 8;10(2):325. doi: 10.3390/plants10020325.

DOI:10.3390/plants10020325
PMID:33567633
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7915050/
Abstract

is a native Asteraceae from Mexico that persists in fragmented habitats. This investigation reports the genetic and chemical diversity of . The diversity analysis based on iPBS markers showed an averaged Shannon index () of 0.3493, a Nei genetic diversity (h) of 0.2256, and a percentage of polymorphic loci average () of 80.7867%. The population structure obtained by AMOVA revealed that the highest variation found within populations was 94.58%. GC-MS profiling of six populations indicated that major volatiles were β-caryophyllene (11.63%), spathulenol (12.85%), caryophyllene oxide (13.98%), α-cadinol (7.04%), cubedol (6.72%) and tau-muurolol (4.81%). Mantel tests suggested a statistically significant relationship between minor volatiles and geographical distance ( = 0.6163; = 0.0470; ˂ 0.05). Likewise, major volatiles showed a significant correlation with the soil pH ( = 0.6862; = 0.0230) and maximum temperature ( = 0.4999; = 0.0280). Our study suggests that the variation and genetic divergence of has no relationship with climatic parameters, whereas the volatiles are probably influenced by environmental factors and not by the genotype per se. Based on the characteristics of , this plant could be considered as a candidate for restoring fragmented shrublands in Mexico.

摘要

是一种原产于墨西哥的菊科植物，在碎片化栖息地中存续。本调查报道了……的遗传和化学多样性。基于iPBS标记的多样性分析显示，平均香农指数（）为0.3493，内氏遗传多样性（h）为0.2256，多态位点平均百分比（）为80.7867%。通过AMOVA获得的种群结构表明，种群内发现的最高变异为94.58%。六个种群的GC-MS分析表明，主要挥发物为β-石竹烯（11.63%）、匙叶桉油烯醇（12.85%）、氧化石竹烯（13.98%）、α-杜松醇（7.04%）、葎草烯醇（6.72%）和τ-依兰油醇（4.81%）。曼特尔检验表明，次要挥发物与地理距离之间存在统计学显著关系（= 0.6163；= 0.0470；˂ 0.05）。同样，主要挥发物与土壤pH值（= 0.6862；= 0.0230）和最高温度（= 0.4999；= 0.0280）显示出显著相关性。我们的研究表明，……的变异和遗传分化与气候参数无关，但挥发物可能受环境因素影响，而非基因型本身。基于……的特征，这种植物可被视为墨西哥碎片化灌丛恢复的候选植物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c442/7915050/889753e122b7/plants-10-00325-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c442/7915050/d146452b9a18/plants-10-00325-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c442/7915050/07babb233e4a/plants-10-00325-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c442/7915050/4dc6a5ea60d3/plants-10-00325-g008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c442/7915050/889753e122b7/plants-10-00325-g011.jpg

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