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Root exudates facilitate the regulation of soil microbial community function in the genus Haloxylon.
Wu, Deyan; He, Xuemin; Jiang, Lamei; Li, Wenjing; Wang, Hengfang; Lv, Guanghui.
Afiliação
  • Wu D; College of Ecology and Environment, Xinjiang University, Urumqi, Xinjiang, China.
  • He X; Key Laboratory of Oasis Ecology of Ministry of Education, Xinjiang University, Urumqi, Xinjiang, China.
  • Jiang L; College of Ecology and Environment, Xinjiang University, Urumqi, Xinjiang, China.
  • Li W; Key Laboratory of Oasis Ecology of Ministry of Education, Xinjiang University, Urumqi, Xinjiang, China.
  • Wang H; College of Life Science, Xinjiang Agricultural University, Urumqi, Xinjiang, China.
  • Lv G; Key Laboratory for Ecological Adaptation and Evolution of Extreme Environment Biology, Xinjiang Agricultural University, Urumqi, Xinjiang, China.
Front Plant Sci ; 15: 1461893, 2024.
Article em En | MEDLINE | ID: mdl-39363923
ABSTRACT

Introduction:

Root exudates act as the "language" of plant-soil communication, facilitating crucial interactions, information exchange, and energy transfer between plants and soil. The interactions facilitated by root exudates between plants and microorganisms in the rhizosphere are crucial for nutrient uptake and stress resilience in plants. However, the mechanism underlying the interaction between root exudates and rhizosphere microorganisms in desert plants under drought conditions remains unclear, especially among closely related species.

Methods:

To reveal the ecological strategies employed by the genus Haloxylon in different habitats. Using DNA extraction and sequencing and UPLC-Q-Tof/MS methods, we studied root exudates and soil microorganisms from two closely related species, Haloxylon ammodendron (HA) and Haloxylon persicum (HP), to assess differences in their root exudates, soil microbial composition, and interactions.

Results:

Significant differences were found in soil properties and root traits between the two species, among which soil water content (SWC) and soil organic carbon (SOC) in rhizosphere and bulk soils (P < 0.05). While the metabolite classification of root exudates was similar, their components varied, with terpenoids being the main differential metabolites. Soil microbial structure and diversity also exhibited significant differences, with distinct key species in the network and differential functional processes mainly related to nitrogen and carbon cycles. Strong correlations were observed between root exudate-mediated root traits, soil microorganisms, and soil properties, although the complex interactions differed between the two closely relative species. The primary metabolites found in the network of HA include sugars and fatty acids, while HP relies on secondary metabolites, steroids and terpenoids.

Discussion:

These findings suggest that root exudates are key in shaping rhizosphere microbial communities, increasing microbial functionality, fostering symbiotic relationships with hosts, and bolstering the resilience of plants to environmental stress.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Front Plant Sci Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Front Plant Sci Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Suíça