Tilletia indica
TaxID: 43049
Basic Information
Tilletia indica
Karnal Bunt, Karnal bunt, Karnal bunt fungus
Karnal bunt (also known as partial bunt) is a fungal disease of wheat, durum wheat, and triticale. The smut fungus Tilletia indica, a basidiomycete, invades the kernels and obtains nutrients from the endosperm, leaving behind waste products with a disagreeable odor that makes bunted kernels too unpalatable for use in flour or pasta. While Karnal bunt generally does not lead to devastating crop losses, it has the potential to dramatically decrease yield, and poses additional economic concerns through quarantines which limit the export of suspected infectious wheat products from certain areas, including the U.S. Several chemical control methods exist for Karnal bunt of wheat, but much work remains to be done in identifying resistant host varieties.
from Wikipedia
Taxonomic Information
Eukaryota
Basidiomycota
Exobasidiomycetes
Tilletiales
Tilletiaceae
Tilletia
indica
Undefined
Species
nan
d__Eukaryota;p__Basidiomycota;c__Exobasidiomycetes;o__Tilletiales;f__Tilletiaceae;g__Tilletia;s__Tilletia indica
nan
Fungal organisms
Photos (0 photos)
No photos available.
Morphological Features
Teliospores of Tilletia indica arise from a fixed hymenium lining cavities formed by separation of the pericarp layers of the wheat grain. The spore originates as a swelling cut off at the tip of a sporogenous hypha by a septum. The wall of the parent sporogenous cell forms the primary wall of the spore initial. Centripetal deposition of secondary wall material produces: 1) a thin, uniform outer layer that fuses with the primary wall to form a sheath; 2) an electron-opaque exospore ornamented with spines; 3) a uniform, granular endospore; and 4) a thin partition layer of sinuous lamellae separating the exospore and endospore. The exospore is complex, composed of concentric fibrous bands divided into two layers. In the outer ornamented layer, deposits of dense amorphous material cement the fibrous bands into conical spines separated by interspinal areas of loosely arranged bands. Inside the ornamented layer, the deposits form a continuous dense basal layer that merges with the broad bases of the spines. Mature teliospores are globose, 30–35 µm in diameter, and are enveloped by a sheath that obscures their spiny nature under SEM. The apiculus sometimes present on mature spores represents the shriveled subapical cell of the sporogenous hypha.
Roberson, R. W., & Luttrell, E. S. (1987). Ultrastructure of Teliospore Ontogeny in Tilletia indica. Mycologia, 79(5), 753–763.
Host Plants (16 host plants)
Data sources: EPPO Global Database and relevant literature.
| Scientific Name | Status |
|---|---|
| Aegilops bicornis | Host |
| Aegilops columnaris | Host |
| Aegilops cylindrica | Host |
| Aegilops geniculata | Host |
| Aegilops neglecta | Host |
| Aegilops peregrina | Host |
| Aegilops sharonensis | Host |
| Aegilops tauschii | Host |
| Aegilops triuncialis | Host |
| Bromus ciliatus | Host |
Quarantine Status (76 records)
Data sources: IPPC website and national quarantine websites; verified by human review.
| Country | Status | Year Added |
|---|---|---|
| Albania | Quarantine pests | — |
| Argentina | Absent | 2019 |
| Armenia | Absent | — |
| Australia | Quarantine pests | — |
| Austria | Quarantine pests | 2019 |
| Azerbaijan | Absent | 2024 |
| Belgium | Unknow | 2019 |
| Bulgaria | Quarantine pests | 2019 |
| Bahrain | Quarantine pests | 2003 |
| Belarus | Absent | 1994 |
Distribution (30 countries)
Data Sources: EPPO Global Database and GBIF.
| Country | Status | State |
|---|---|---|
| Afghanistan | Present | — |
| Australia | Present | — |
| Brazil | Absent | |
| Canada | Present | — |
| Germany | Present | — |
| Denmark | Absent | — |
| United Kingdom | Present | — |
| Greece | Present | — |
| Hungary | Absent | — |
| India | Present | — |
Distribution Map (Latitude and longitude coordinates sourced from GBIF.)
Download CSVGenomes (1 records)
Data source: NCBI.
| Assembly Accession | Assembly Level | Genome Size(Mb) | Contig N50(Kb) | Scaffold N50(Kb) | BUSCO% | Downloads | Actions |
|---|---|---|---|---|---|---|---|
| GCA_001645015.2 | Scaffold | 28 | 21 | 23 | - |
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AAFC_TiDAOMC236416_2 |
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Transcriptomes (3 records)
Data source: NCBI.
| Run ID | Tissue | Developmental Stage | Sex | Read Count | Location | Actions |
|---|---|---|---|---|---|---|
| SRR3289824 | - | - | - | 13180326 | Pakistan | |
|
PRJNA314779 SRX1681464 SRP072238 fungi Tilletia indica RNA DAOMC 236416 {'strain': 'DAOMC 236416', 'sample_type': 'polysporidial', 'geo_loc_name': 'Pakistan', 'identified_by': 'George White', 'biosamplemodel': 'Microbe, viral or environmental', 'collection_date': '1997', 'isolation_source': 'spores', 'specimen_voucher': 'DAOM:236416', 'biomaterial_provider': 'DAOM'} |
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| SRR8599901 | - | - | - | 29335701 | India | |
|
PRJNA522347 SRX5399908 SRP186439 fungi GerminatingTeliospore KB_1 {'host': 'Triticum aestivum', 'kb_1': 'Karnal bunt', 'temp': '25 C', 'strain': 'Tilletia indica KB_1', 'isolate': 'KB_1', 'lat_lon': 'Not collected', 'altitude': 'Not collected', 'genotype': 'Sonalika', 'lab_host': 'Tilletia indica', 'samp_size': '1 Kg infected wheat grain', 'sample_type': 'infected karnal bunt diseased wheat grain', 'collected_by': 'Dr Malkhan Singh Gurjar', 'geo_loc_name': 'India', 'identified_by': 'Dr. Malkhan Singh Gurjar', 'biosamplemodel': 'Microbe, viral or environmental', 'collection_date': '2015-04-15', 'env_broad_scale': 'North western plain zone of India', 'isolation_source': 'bunted grain', 'host_tissue_sampled': 'wheat spike infected', 'biomaterial_provider': 'Dr. Malkhan Singh Gurjar'} |
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| SRR8599900 | - | - | - | 34341621 | India | |
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PRJNA522347 SRX5399909 SRP186439 fungi DormatTeliospore KB_1 {'host': 'Triticum aestivum', 'kb_1': 'Karnal bunt', 'temp': '25 C', 'strain': 'Tilletia indica KB_1', 'isolate': 'KB_1', 'lat_lon': 'Not collected', 'altitude': 'Not collected', 'genotype': 'Sonalika', 'lab_host': 'Tilletia indica', 'samp_size': '1 Kg infected wheat grain', 'sample_type': 'infected karnal bunt diseased wheat grain', 'collected_by': 'Dr Malkhan Singh Gurjar', 'geo_loc_name': 'India', 'identified_by': 'Dr. Malkhan Singh Gurjar', 'biosamplemodel': 'Microbe, viral or environmental', 'collection_date': '2015-04-15', 'env_broad_scale': 'North western plain zone of India', 'isolation_source': 'bunted grain', 'host_tissue_sampled': 'wheat spike infected', 'biomaterial_provider': 'Dr. Malkhan Singh Gurjar'} |
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Literature
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