干旱区生态环境知识资源中心(Arid): Drought induces substitution of bacteria within taxonomic groups in the rhizosphere of native maize from arid and tropical regions

Arid

DOI	10.1016/j.rhisph.2023.100835
	Drought induces substitution of bacteria within taxonomic groups in the rhizosphere of native maize from arid and tropical regions
	Guevara-Hernandez, Eduardo; Arellano-Wattenbarger, Guillermo Luis; Coronado, Yaxk'in; de la Torre, Mayra; Rocha, Jorge; Aguirre-von-Wobeser, Eneas
通讯作者	Aguirre-von-Wobeser, E
来源期刊	RHIZOSPHERE
EISSN	2452-2198
出版年	2024
卷号	29
英文摘要	In Mexico, maize landraces are usually cultivated in milpa polyculture agroecosystems, which are maintained with ancestral practices, i.e. with very low external inputs such as chemicals and without irrigation systems. Several studies have characterized soil and maize-root microbiota from different milpas, however, robust experimental approaches are necessary to understand the relationship between a healthy microbial community structure and the health of milpa plants. We tested the hypothesis that different maize varieties not only differ in the microorganisms enriched in their rhizospheric environment, but also in the responses of these communities to drought. By suspending irrigation, we induced drought experimentally in three varieties of maize: one landrace from an arid milpa, one from a tropical milpa, and a commercial hybrid. The treatment elicited stress symptoms and growth declines in all three maize varieties. Nevertheless, the maize landrace from arid milpa displayed a better performance in biomass accumulation. The drought treatment did not significantly affect bulk soil bac-terial communities; in contrast, all three varieties had shifts in their rhizospheric microbiomes, indicating that these responses were related to the presence of plant roots. The varieties differed in their changes of root-associated microbiota in response to drought, with only Paenarthrobacter genus increasing in all three. Re-sponses mainly consisted of increases in the abundance of certain groups (e.g. Verrucomicrobiota) and substi-tution of strains within groups (e.g. Group 6 Acidobacteriota, family Streptomycetacea, and many others). The landrace from an arid region had the most bacteria substituted under drought, suggesting that a more stringent selection of microorganisms in roots could be part of the response of this landrace to drought. We propose that drought-tolerant maize landraces from arid milpas could be the source of bacterial strains or communities that aid drought-sensitive varieties in coping with reduced water availability expected due to climate change.
英文关键词	Maize Landraces Drought tolerance Microbiome Traditional milpa
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001143232400001
WOS关键词	CHLOROPHYLL FLUORESCENCE CHARACTERISTICS ; PHOTOSYNTHETIC ELECTRON-TRANSPORT ; ROOT MICROBIOME ; STRESS ; YIELD ; MILPA ; DIVERSITY ; CULTIVARS ; EVOLUTION ; COMMUNITY
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405397
推荐引用方式 GB/T 7714	Guevara-Hernandez, Eduardo,Arellano-Wattenbarger, Guillermo Luis,Coronado, Yaxk'in,et al. Drought induces substitution of bacteria within taxonomic groups in the rhizosphere of native maize from arid and tropical regions[J],2024,29.
APA	Guevara-Hernandez, Eduardo,Arellano-Wattenbarger, Guillermo Luis,Coronado, Yaxk'in,de la Torre, Mayra,Rocha, Jorge,&Aguirre-von-Wobeser, Eneas.(2024).Drought induces substitution of bacteria within taxonomic groups in the rhizosphere of native maize from arid and tropical regions.RHIZOSPHERE,29.
MLA	Guevara-Hernandez, Eduardo,et al."Drought induces substitution of bacteria within taxonomic groups in the rhizosphere of native maize from arid and tropical regions".RHIZOSPHERE 29(2024).