气候变化领域集成服务门户(CCPortal): Rhizospheric bacteria from the Atacama Desert hyper-arid core: cultured community dynamics and plant growth promotion

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DOI	10.1128/spectrum.00056-24
	Rhizospheric bacteria from the Atacama Desert hyper-arid core: cultured community dynamics and plant growth promotion
	Castro-Severyn, Juan; Fortt, Jonathan; Sierralta, Mariela; Alegria, Paola; Donoso, Gabriel; Choque, Alessandra; Avellaneda, Andrea M.; Pardo-Este, Coral; Saavedra, Claudia P.; Stoll, Alexandra; Remonsellez, Francisco
发表日期	2024
ISSN	2165-0497
英文摘要	The Atacama Desert is the oldest and driest desert on Earth, encompassing great temperature variations, high ultraviolet radiation, drought, and high salinity, making it ideal for studying the limits of life and resistance strategies. It is also known for harboring a great biodiversity of adapted life forms. While desertification is increasing as a result of climate change and human activities, it is necessary to optimize soil and water usage, where stress-resistant crops are possible solutions. As many studies have revealed the great impact of the rhizobiome on plant growth efficiency and resistance to abiotic stress, we set up to explore the rhizospheric soils of Suaeda foliosa and Distichlis spicata desert plants. By culturing these soils and using 16S rRNA amplicon sequencing, we address community taxonomy composition dynamics, stability through time, and the ability to promote lettuce plant growth. The rhizospheric soil communities were dominated by the families Pseudomonadaceae, Bacillaceae, and Planococcaceae for S. foliosa and Porphyromonadaceae and Haloferacaceae for D. spicata. Nonetheless, the cultures were completely dominated by the Enterobacteriaceae family (up to 98%). Effectively, lettuce plants supplemented with the cultures showed greater size and biomass accumulation. We identified 12 candidates that could be responsible for these outcomes, of which 5 (Enterococcus, Pseudomonas, Klebsiella, Paenisporosarcina, and Ammoniphilus) were part of the built co-occurrence network. We aim to contribute to the efforts to characterize the microbial communities as key for the plant's survival in extreme environments and as a possible source of consortia with plant growth promotion traits aimed at agricultural applications. IMPORTANCE The current scenario of climate change and desertification represents a series of incoming challenges for all living organisms. As the human population grows rapidly, so does the rising demand for food and natural resources; thus, it is necessary to make agriculture more efficient by optimizing soil and water usage, thus ensuring future food supplies. Particularly, the Atacama Desert (northern Chile) is considered the most arid place on Earth as a consequence of geological and climatic characteristics, such as the naturally low precipitation patterns and high temperatures, which makes it an ideal place to carry out research that seeks to aid agriculture in future conditions that are predicted to resemble these scenarios. Our main interest lies in utilizing microorganism consortia from plants thriving under extreme conditions, aiming to promote plant growth, improve crops, and render unsuitable soils farmable.
英文关键词	D. spicata; S. foliosa; soil cultures; rhizobiome; amplicon sequencing
语种	英语
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:001210976000003
来源期刊	MICROBIOLOGY SPECTRUM
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/292223
作者单位	Universidad Catolica del Norte; Universidad Catolica del Norte; Universidad Catolica del Norte; Universidad Andres Bello; Universidad de La Serena
推荐引用方式 GB/T 7714	Castro-Severyn, Juan,Fortt, Jonathan,Sierralta, Mariela,et al. Rhizospheric bacteria from the Atacama Desert hyper-arid core: cultured community dynamics and plant growth promotion[J],2024.
APA	Castro-Severyn, Juan.,Fortt, Jonathan.,Sierralta, Mariela.,Alegria, Paola.,Donoso, Gabriel.,...&Remonsellez, Francisco.(2024).Rhizospheric bacteria from the Atacama Desert hyper-arid core: cultured community dynamics and plant growth promotion.MICROBIOLOGY SPECTRUM.
MLA	Castro-Severyn, Juan,et al."Rhizospheric bacteria from the Atacama Desert hyper-arid core: cultured community dynamics and plant growth promotion".MICROBIOLOGY SPECTRUM (2024).