Response of Alternaria and Fusarium Species to Low Precipitation in a Drought-Tolerant Plant in Morocco.
Malva sylvsestris
Dark septate endophytes
Fungi
Mycobiome-plant interaction
Rhizosphere
Journal
Microbial ecology
ISSN: 1432-184X
Titre abrégé: Microb Ecol
Pays: United States
ID NLM: 7500663
Informations de publication
Date de publication:
11 Oct 2024
11 Oct 2024
Historique:
received:
12
06
2024
accepted:
30
09
2024
medline:
11
10
2024
pubmed:
11
10
2024
entrez:
11
10
2024
Statut:
epublish
Résumé
The plant mycobiome plays a crucial role in the host life cycle, influencing both healthy and diseased states, and is essential for plant tolerance to drought. In this study, we used ITS metabarcoding to investigate the fungal community of the drought-resistant plant Malva sylvestris L. in Morocco along a gradient of precipitation, encompassing subhumid and semi-arid environments. We sampled three biotopes: rhizosphere, bulk soil, and root endosphere. Our findings revealed an absence of beta-diversity differences between bulk soil and rhizosphere, indicating that the plant does not selectively influence its rhizosphere mycobiome. Additionally, ASVs belonging to the genus Alternaria represented up to 30% of reads in the plant's roots and correlated with drought (p = 0.006), indicating a potential role for this fungal genus in mitigating drought, possibly as part of the dark septate endophyte group. Root staining and microscopic observation revealed extensive colonization by fungal hyphae and microsclerotia-like structures. Furthermore, ASVs identified as Fusarium equiseti were also correlated with low precipitation and recognized as a hub taxon in the roots. However, it remains uncertain whether this species is pathogenic or beneficial to the plant. These insights contribute to our understanding of the plant mycobiome's role in drought tolerance and highlight the importance of specific fungal taxa in supporting plant health under varying environmental conditions. Future research should focus on characterizing these taxa's functional roles and their interactions with the host plant to further elucidate their contributions to drought resistance.
Identifiants
pubmed: 39392487
doi: 10.1007/s00248-024-02439-3
pii: 10.1007/s00248-024-02439-3
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
127Subventions
Organisme : OPC Africa and OCP Innovation
ID : Project AS-85
Informations de copyright
© 2024. The Author(s).
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