干旱区生态环境知识资源中心(Arid): Contribution of seed-endophytic bacteria to drought tolerance in early developmental stages of native maize landraces from arid milpas

Arid

DOI	10.1007/s11104-023-06195-0
	Contribution of seed-endophytic bacteria to drought tolerance in early developmental stages of native maize landraces from arid milpas
	Arellano-Wattenbarger, Guillermo Luis; Montiel, Sahiam; Aguirre-Von-Wobeser, Eneas; de la Torre, Mayra; Rocha, Jorge
通讯作者	Rocha, J
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2024
卷号	500 期号:1-2 页码:213-232
英文摘要	AimsMilpas are traditional agroecosystems found in rural areas of Mexico, where low input practices favor the presence of microbial associates with greater abundance and diversity than modern crops. Milpas can be found in a wide range of climates, but the beneficial functions of microbes are yet to be explored across biotic and abiotic conditions. In semi-arid regions of Hidalgo, Mexico, maize landraces have been selected to grow in milpas despite low rainfall and we hypothesized that associated bacteria contribute to the drought tolerance of these plants.MethodsWe collected maize seeds from arid and tropical milpas, as well as hybrid varieties from modern crops to test their responses to drought during germination and early vegetative growth; next, we studied the role of seed endophytic bacteria for this trait.ResultsLandraces from arid milpas displayed decreased phenotypic responses to drought (i.e. increased tolerance), and elimination of seed-endophytic bacteria from these landraces reduced germination in drought. Next, 16 S amplicon sequencing revealed that drought-tolerant landraces harbor Pseudomonas spp., Brachybacterium spp., and strains from the Bacilli class that were not found in drought-sensitive varieties; likewise, culturing methods allowed the isolation of these bacterial groups. Finally, inoculation of Pseudomonas spp. and Brachybacterium sp. strains improved the germination of a drought-sensitive variety.ConclusionsOur results indicate that seed-endophytic bacteria associated to maize landraces from arid milpas contribute to drought tolerance in early developmental stages and support that ancestral practices manifest in the microbial ecology of milpas, selecting beneficial microbes to cope with local conditions.
英文关键词	Milpa agroecosystems Maize landraces Drought tolerance Seed endophytes Beneficial plant-microbe interactions Germination
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001044847600002
WOS关键词	CLIMATE-CHANGE ; MANAGEMENT ; DIVERSITY ; STRESS ; FBKV2
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/2XILL650/405086
推荐引用方式 GB/T 7714	Arellano-Wattenbarger, Guillermo Luis,Montiel, Sahiam,Aguirre-Von-Wobeser, Eneas,et al. Contribution of seed-endophytic bacteria to drought tolerance in early developmental stages of native maize landraces from arid milpas[J],2024,500(1-2):213-232.
APA	Arellano-Wattenbarger, Guillermo Luis,Montiel, Sahiam,Aguirre-Von-Wobeser, Eneas,de la Torre, Mayra,&Rocha, Jorge.(2024).Contribution of seed-endophytic bacteria to drought tolerance in early developmental stages of native maize landraces from arid milpas.PLANT AND SOIL,500(1-2),213-232.
MLA	Arellano-Wattenbarger, Guillermo Luis,et al."Contribution of seed-endophytic bacteria to drought tolerance in early developmental stages of native maize landraces from arid milpas".PLANT AND SOIL 500.1-2(2024):213-232.