Unidad Regional Hidalgo, CONACYT, Centro de Investigación y Desarrollo, A.C., Blvd. Sta. Catarina s/n, Col. Santiago Tlapacoya, 42110, San Agustin Tlaxiaca, Hidalgo, Mexico.
Red de Estudios Moleculares Avanzados, Instituto de Ecología, A.C., Carretera antigua a Coatepec 351, Col. El Haya, 91070, Xalapa, Veracruz, Mexico.
Arch Microbiol. 2021 Sep;203(7):4593-4607. doi: 10.1007/s00203-021-02449-6. Epub 2021 Jun 23.
Bark is a permanent surface for microbial colonization at the interface of trees and the surrounding air, but little is known about its microbial communities. We used shotgun metagenomic sequencing to analyze the bark microbiomes of avocado trees from two orchards, and compared one of them to rhizospheric soil. It was shown that the microbial communities of avocado bark have a well-defined taxonomic structure, with consistent patterns of abundance of bacteria, fungi, and archaea, even in trees from two different locations. Bark microbial communities were distinct from rhizospheric soil, although they showed overlap in some taxa. Thus, avocado bark is a well-defined environment, providing niches for specific taxonomic groups, many of which are also found in other aerial plant tissues. The present in-depth characterization of bark microbial communities can form a basis for their future manipulation for agronomical purposes.
树皮是树木与周围空气交界处微生物定殖的永久表面，但对其微生物群落知之甚少。我们使用高通量宏基因组测序分析了来自两个果园的鳄梨树的树皮微生物组，并将其中一个与根际土壤进行了比较。结果表明，鳄梨树皮的微生物群落具有明确的分类结构，细菌、真菌和古菌的丰度模式一致，即使在来自两个不同位置的树木中也是如此。树皮微生物群落与根际土壤不同，尽管它们在某些分类群上存在重叠。因此，鳄梨树皮是一个明确的环境，为特定的分类群提供了小生境，其中许多分类群也存在于其他空中植物组织中。目前对树皮微生物群落的深入特征描述可以为未来出于农艺目的对其进行操纵奠定基础。
