Microbiome Variation Across Populations of Desert Halophyte Zygophyllum qatarensis

Frontiers in Plant Science

Lucas Dantas Lopes¹  Daniel P. Schachtman¹  Kerri M. Crawford²  Venkatesh Balan³  Saqib Bilal⁴  Ahmed Al-Harrasi⁴  Ahmed Al-Rawahi⁴  Sajjad Asaf⁴  Abdul Latif Khan⁴ 

[1]Department of Agronomy and Horticulture, Centre for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, United States

[2]Department of Biology and Biochemistry, College of Natural Science and Mathematics, University of Houston, Houston, TX, United States

[3]Department of Engineering Technology, College of Technology, University of Houston, Sugar Land, TX, United States

[4]Natural and Medical Sciences Research Centre, University of Nizwa, Nizwa, Oman

关键词: microbiome;    desert succulents;    Zygophyllum qatarensis;    microbial communities;    microbial diversity;    core-microbiome;   

DOI  :  10.3389/fpls.2022.841217

来源: DOAJ

【 摘 要 】

Microbial symbionts play a significant role in plant health and stress tolerance. However, few studies exist that address rare species of core-microbiome function during abiotic stress. In the current study, we compared the microbiome composition of succulent dwarf shrub halophyte Zygophyllum qatarensis Hadidi across desert populations. The results showed that rhizospheric and endosphere microbiome greatly varied due to soil texture (sandy and gravel). No specific bacterial amplicon sequence variants were observed in the core-microbiome of bulk soil and rhizosphere, however, bacterial genus Alcaligenes and fungal genus Acidea were abundantly distributed across root and shoot endospheres. We also analyzed major nutrients such as silicon (Si), magnesium, and calcium across different soil textures and Z. qatarensis populations. The results showed that the rhizosphere and root parts had significantly higher Si content than the bulk soil and shoot parts. The microbiome variation can be attributed to markedly higher Si – suggesting that selective microbes are contributing to the translocation of soluble Si to root. In conclusion, low core-microbiome species abundance might be due to the harsh growing conditions in the desert – making Z. qatarensis highly selective to associate with microbial communities. Utilizing rare microbial players from plant microbiomes may be vital for increasing crop stress tolerance and productivity during stresses.

【 授权许可】

Unknown