Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Mais filtros

Base de dados
Assunto principal
Ano de publicação
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
Microb Ecol ; 86(1): 446-459, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35925231

RESUMO

Lettuce plants respond differently to cover crop amendments by altering their biomass and nitrogen uptake (Nup) at different plant growth stages. Nonetheless, plant-microbe interactions involved in the alterations are scarcely studied. This study elucidated how the properties of the soil microbial community inhabiting the rhizosphere associated with lettuce (Lactuca sativa L. var. crispa "Red fire") change during plant growth stages. Lettuce plants were cultivated in control soil and soil with rye, hairy vetch (HV), and rye plus HV (rye + HV) cover crop amendments. Rhizosphere soil samples were collected at the mid-growth and mature stages of plant development. DNA was extracted from the soil, and the 16S rRNA region was amplified using polymerase chain reaction to analyze bacterial genes and community structures and functions. Cover crop amendments and plant growth stages increased or decreased the relative abundances of bacterial taxa at the genus level. Plant maturity decreased 16S rRNA gene expression and the number of bacterial operational taxonomic units in all treatments. The unique, core, and shared taxa with low relative abundances may be associated with improved lettuce Nup and lettuce shoot and root biomass at each plant growth stage under different cover crop amendments based on multivariate analysis between plant indicators and bacterial genera groups. This study revealed the importance of bacterial groups with low relative abundance in plant-microbe interactions; such bacteria may promote the cover crop application for high lettuce productivity.


Assuntos
Lactuca , Solo , Lactuca/genética , Lactuca/microbiologia , RNA Ribossômico 16S/genética , RNA Ribossômico 16S/metabolismo , Solo/química , Bactérias/genética , Desenvolvimento Vegetal , Microbiologia do Solo , Rizosfera , Raízes de Plantas/microbiologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA