干旱区生态环境知识资源中心(Arid): Tillandsia landbeckii phyllosphere and laimosphere as refugia for bacterial life in a hyperarid desert environment

Arid

DOI	10.1186/s40168-023-01684-x
	Tillandsia landbeckii phyllosphere and laimosphere as refugia for bacterial life in a hyperarid desert environment
	Hakobyan, Anna; Velte, Stefanie; Sickel, Wiebke; Quandt, Dietmar; Stoll, Alexandra; Knief, Claudia
通讯作者	Knief, C
来源期刊	MICROBIOME
ISSN	2049-2618
出版年	2023
卷号	11 期号:1
英文摘要	Background The lack of water is a major constraint for microbial life in hyperarid deserts. Consequently, the abundance and diversity of microorganisms in common habitats such as soil are strongly reduced, and colonization occurs primarily by specifically adapted microorganisms that thrive in particular refugia to escape the harsh conditions that prevail in these deserts. We suggest that plants provide another refugium for microbial life in hyperarid deserts. We studied the bacterial colonization of Tillandsia landbeckii (Bromeliaceae) plants, which occur in the hyperarid regions of the Atacama Desert in Chile, one of the driest and oldest deserts on Earth.Results We detected clear differences between the bacterial communities being plant associated to those of the bare soil surface (PERMANOVA, R-2 = 0.187, p = 0.001), indicating that Tillandsia plants host a specific bacterial community, not only dust-deposited cells. Moreover, the bacterial communities in the phyllosphere were distinct from those in the laimosphere, i.e., on buried shoots (R-2 = 0.108, p = 0.001), indicating further habitat differentiation within plant individuals. The bacterial taxa detected in the phyllosphere are partly well-known phyllosphere colonizers, but in addition, some rather unusual taxa (subgroup2 Acidobacteriae, Acidiphilum) and insect endosymbionts (Wolbachia, Candidatus Uzinura) were found. The laimosphere hosted phyllosphere-associated as well as soil-derived taxa. The phyllosphere bacterial communities showed biogeographic patterns across the desert (R-2 = 0.331, p = 0.001). These patterns were different and even more pronounced in the laimosphere (R-2 = 0.467, p = 0.001), indicating that different factors determine community assembly in the two plant compartments. Furthermore, the phyllosphere microbiota underwent temporal changes (R-2 = 0.064, p = 0.001).Conclusions Our data demonstrate that T. landbeckii plants host specific bacterial communities in the phyllosphere as well as in the laimosphere. Therewith, these plants provide compartment-specific refugia for microbial life in hyperarid desert environments. The bacterial communities show biogeographic patterns and temporal variation, as known from other plant microbiomes, demonstrating environmental responsiveness and suggesting that bacteria inhabit these plants as viable microorganisms.
英文关键词	Phyllosphere Laimosphere Bromeliaceae Hyperarid Microbiota Biogeography
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001101170900002
WOS关键词	SP NOV. ; ATACAMA DESERT ; ENDOPHYTIC BACTERIA ; COASTAL HALOPHYTE ; ARID ZONE ; COMMUNITY ; DIVERSITY ; SOIL ; RHIZOSPHERE ; GROWTH
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397839
推荐引用方式 GB/T 7714	Hakobyan, Anna,Velte, Stefanie,Sickel, Wiebke,et al. Tillandsia landbeckii phyllosphere and laimosphere as refugia for bacterial life in a hyperarid desert environment[J],2023,11(1).
APA	Hakobyan, Anna,Velte, Stefanie,Sickel, Wiebke,Quandt, Dietmar,Stoll, Alexandra,&Knief, Claudia.(2023).Tillandsia landbeckii phyllosphere and laimosphere as refugia for bacterial life in a hyperarid desert environment.MICROBIOME,11(1).
MLA	Hakobyan, Anna,et al."Tillandsia landbeckii phyllosphere and laimosphere as refugia for bacterial life in a hyperarid desert environment".MICROBIOME 11.1(2023).