Academic Journal
Composition, Structure, and Diversity of Rhizosphere Soil Microbial Community in Saffron (Crocus sativus) Affected by Root Bulb Rot.
| Τίτλος: | Composition, Structure, and Diversity of Rhizosphere Soil Microbial Community in Saffron (Crocus sativus) Affected by Root Bulb Rot. |
|---|---|
| Συγγραφείς: | Wen M; Yunnan Provincial Key Laboratory of Forest Disaster Warning and Control, Southwest Forestry University, Kunming 650224, China., Ma X; School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 611731, China., Wu F; Yunnan Provincial Key Laboratory of Forest Disaster Warning and Control, Southwest Forestry University, Kunming 650224, China., Ma R; Yunnan Provincial Key Laboratory of Forest Disaster Warning and Control, Southwest Forestry University, Kunming 650224, China., Peng R; Yunnan Provincial Key Laboratory of Forest Disaster Warning and Control, Southwest Forestry University, Kunming 650224, China., Chen J; State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming 650091, China., Wu J; Yunnan Provincial Key Laboratory of Forest Disaster Warning and Control, Southwest Forestry University, Kunming 650224, China. |
| Πηγή: | Plant disease [Plant Dis] 2026 Aug; Vol. 110 (8), pp. 3473-3486. Date of Electronic Publication: 2026 Aug 06. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: American Phytopathological Society Country of Publication: United States NLM ID: 9882809 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0191-2917 (Print) Linking ISSN: 01912917 NLM ISO Abbreviation: Plant Dis Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: St. Paul, Minn. : American Phytopathological Society, [1980]- |
| Ιατρικοί όροι (MeSH): | Crocus*/microbiology , Plant Diseases*/microbiology , Fusarium*/physiology , Rhizosphere* , Soil Microbiology* , Microbiota*, Plant Roots/microbiology ; Mycorrhizae/physiology ; Mycorrhizae/genetics ; Bacteria/genetics ; Bacteria/classification ; Fungi/genetics ; Soil/chemistry ; RNA, Ribosomal, 16S/genetics |
| Περίληψη: | Fusarium oxysporum, first identified in Yunnan Province as the causal agent of saffron corm rot, causes a destructive soilborne disease that has become a devastating threat to saffron cultivation in Shangri-La, causing over 50% mortality. This pathogen infects saffron corms, leading to vascular browning and rot, ultimately causing plant death and severe production losses. Given the crucial role of the rhizosphere microbiome in plant immunity and soil ecology, deciphering pathogen-microbiome interactions is essential for developing sustainable disease-control strategies. High-throughput sequencing of ITS/16S rRNA (Illumina MiSeq) was combined with arbuscular mycorrhizal fungi (AMF) analysis to compare the community structures of fungi, bacteria, and AMF in the rhizosphere of healthy and diseased saffron. The effects of soil physicochemical factors on microbiome assembly were systematically evaluated. The rhizosphere microbiome of diseased plants was significantly dysregulated: (i) pathogen-related taxa (e.g., Lauriomyces) proliferated, while saprotrophic functional taxa (e.g., Mortierella elongata) underwent community restructuring; (ii) disease-suppressive taxa (e.g., Fusidium) were enriched, while symbiotic mycorrhizal fungi essential for nutrient acquisition sharply declined; (iii) the soil parameter-microbiome relationship changed under different health conditions: available phosphorus and available potassium drove the aggregation of pathogenic soil fungi, while pH and organic matter dominated the aggregation of healthy soil fungi; and (iv) Knufia and Phomopsis were important taxa regulating soil ammonia oxidation and plant vitality. Fusarium infection disrupts the rhizosphere balance by inhibiting beneficial symbionts and promoting the colonization of pathogenic or saprotrophic microorganisms, ultimately compromising the innate resistance of saffron. Our findings reveal the rhizosphere ecological mechanism underlying corm rot progression and provide a microbiome informatics framework for the selection of biocontrol agents and rhizosphere engineering. |
| Competing Interests: | The author(s) declare no conflict of interest. |
| Contributed Indexing: | Keywords: arbuscular mycorrhizal fungi; microbial communities in the rhizosphere soil; microbial diversity; saffron root bulb rot disease |
| Substance Nomenclature: | 0 (Soil) 0 (RNA, Ribosomal, 16S) |
| SCR Organism: | Fusarium oxysporum |
| Entry Date(s): | Date Created: 20260217 Date Completed: 20260827 Latest Revision: 20260827 |
| Update Code: | 20260828 |
| DOI: | 10.1094/PDIS-07-25-1456-RE |
| PMID: | 41702871 |
| Βάση Δεδομένων: | MEDLINE |
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