Plant Biotechnology Group - Plant Virology, Western Australian State Agricultural Biotechnology Centre, School of Veterinary and Life Sciences, Murdoch University, Perth, Western Australia, 6150, Australia.
Microb Ecol. 2018 Jan;75(1):74-87. doi: 10.1007/s00248-017-1020-0. Epub 2017 Jul 13.
In arid regions of northern Australia, plants survive under water deficit, high temperatures, intense solar radiation and nutrient-impoverished soils. They employ various morpho-physiological and biochemical adaptations including interaction with microbial symbionts. We evaluated identity, host and tissue association with geographical distribution of fungal endophytes isolated from above- and below-ground tissues of plants of three indigenous Australian Nicotiana species. Isolation frequency and α-diversity were significantly higher for root endophyte assemblages than those of stem and leaf tissues. We recorded no differences in endophyte species richness or diversity as a function of sampling location, but did detect differences among different host genotypes and plant tissues. There was a significant pattern of community similarity associated with host genotypes but no consistent pattern of fungal community structuring associated with sampling location and tissue type, regardless of the community similarity measurements used.
在澳大利亚北部干旱地区，植物在缺水、高温、强烈太阳辐射和营养贫瘠的土壤条件下生存。它们采用各种形态生理和生化适应策略，包括与微生物共生体的相互作用。我们评估了从三种澳大利亚本土烟草属植物的地上和地下组织中分离出的真菌内生菌的身份、宿主和组织相关性，以及它们的地理分布。与茎和叶组织相比，根内生菌组合的分离频率和α多样性显著更高。我们没有记录到内生菌物种丰富度或多样性随采样地点的变化而变化，但确实检测到不同宿主基因型和植物组织之间存在差异。尽管使用了不同的群落相似性测量方法，但与宿主基因型相关的群落相似性存在显著模式，而与采样地点和组织类型相关的真菌群落结构没有一致模式。
