Phosphorus stress-induced root exudates mediated plant-microbe interactions of Melilotus officinalis
Yang, Zhuo ; Wu, Tong ; Niu, Jianzhi ; Zhang, Linus LU
; Chen, Xiongwen
; Berndtsson, Ronny
LU
; Yang, Tao
and Dou, Tingting
(2025)
In Rhizosphere
36.
- Abstract
Phosphorus deficiency exacerbates the challenges of phytoremediation in mining areas, particularly for herbaceous species. Although Melilotus officinalis L. Pall. (Melilotus) serves as a pioneer species in mine reclamation, its response mechanisms to phosphorus deficiency stress (PDS)—particularly regarding root exudates composition, plant growth, soil properties, and key microbial functional groups—remain systematically underexplored. This study employed a multi-method approach, implementing concurrent hydroponic, pot-based, and field validation experiments to investigate these mechanisms in Melilotus. The results showed that: (1) Under PDS, peptides and nucleic acids predominated in Melilotus root exudates, with citric acid as the... (More)
Phosphorus deficiency exacerbates the challenges of phytoremediation in mining areas, particularly for herbaceous species. Although Melilotus officinalis L. Pall. (Melilotus) serves as a pioneer species in mine reclamation, its response mechanisms to phosphorus deficiency stress (PDS)—particularly regarding root exudates composition, plant growth, soil properties, and key microbial functional groups—remain systematically underexplored. This study employed a multi-method approach, implementing concurrent hydroponic, pot-based, and field validation experiments to investigate these mechanisms in Melilotus. The results showed that: (1) Under PDS, peptides and nucleic acids predominated in Melilotus root exudates, with citric acid as the dominant organic acid. Meanwhile, lignan such as Clemaphenol A and Citrusin A increased with the severity of PDS.(2) PDS resulted in reduced root development in Melilotus without significant morphological alterations. (3)Under prolonged PDS, the greater the extent of phosphorus limitation, the higher the concentration of bioavailable phosphorus fractions in the soil planted with Melilotus.(4)Soil bacteria under PDS were dominated by Actinobacteria and Ascomycetes. Dominant soil fungi included environmentally tolerant fungi and cellulose enzyme-producing fungi at varying PDS levels. These findings provide important insights for managing mining area soil nutrition considering plant growth and ecological cycling functions.
(Less)
- author
- Yang, Zhuo
; Wu, Tong
; Niu, Jianzhi
; Zhang, Linus
LU
; Chen, Xiongwen
; Berndtsson, Ronny
LU
; Yang, Tao
and Dou, Tingting
- organization
- publishing date
- 2025-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Functional ecology, Melilotus officinalisL.Pall, Phosphorum uptake, Phosphorus deficiency stress, Root exudates
- in
- Rhizosphere
- volume
- 36
- article number
- 101186
- publisher
- Elsevier
- external identifiers
-
- scopus:105017907105
- DOI
- 10.1016/j.rhisph.2025.101186
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2025 Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
- id
- 0ba19c7a-deff-44ad-a79b-beb9ef53bc84
- date added to LUP
- 2025-10-20 08:28:06
- date last changed
- 2025-10-27 14:42:10
@article{0ba19c7a-deff-44ad-a79b-beb9ef53bc84,
abstract = {{<p>Phosphorus deficiency exacerbates the challenges of phytoremediation in mining areas, particularly for herbaceous species. Although Melilotus officinalis L. Pall. (Melilotus) serves as a pioneer species in mine reclamation, its response mechanisms to phosphorus deficiency stress (PDS)—particularly regarding root exudates composition, plant growth, soil properties, and key microbial functional groups—remain systematically underexplored. This study employed a multi-method approach, implementing concurrent hydroponic, pot-based, and field validation experiments to investigate these mechanisms in Melilotus. The results showed that: (1) Under PDS, peptides and nucleic acids predominated in Melilotus root exudates, with citric acid as the dominant organic acid. Meanwhile, lignan such as Clemaphenol A and Citrusin A increased with the severity of PDS.(2) PDS resulted in reduced root development in Melilotus without significant morphological alterations. (3)Under prolonged PDS, the greater the extent of phosphorus limitation, the higher the concentration of bioavailable phosphorus fractions in the soil planted with Melilotus.(4)Soil bacteria under PDS were dominated by Actinobacteria and Ascomycetes. Dominant soil fungi included environmentally tolerant fungi and cellulose enzyme-producing fungi at varying PDS levels. These findings provide important insights for managing mining area soil nutrition considering plant growth and ecological cycling functions.</p>}},
author = {{Yang, Zhuo and Wu, Tong and Niu, Jianzhi and Zhang, Linus and Chen, Xiongwen and Berndtsson, Ronny and Yang, Tao and Dou, Tingting}},
keywords = {{Functional ecology; Melilotus officinalisL.Pall; Phosphorum uptake; Phosphorus deficiency stress; Root exudates}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Rhizosphere}},
title = {{Phosphorus stress-induced root exudates mediated plant-microbe interactions of Melilotus officinalis}},
url = {{http://dx.doi.org/10.1016/j.rhisph.2025.101186}},
doi = {{10.1016/j.rhisph.2025.101186}},
volume = {{36}},
year = {{2025}},
}