1. PaDIL Species Factsheet

Scientific Name: australiensis R.G. Shivas, Cother, G.J. Ash, Jane D. Ray & Vánky , , Tilletiales, Tilletiaceae

Common Name Native rice smut Live link: http://www.padil.gov.au/aus-smuts/Pest/Main/140170

Image Library Smut Fungi of Australia Live link: http://www.padil.gov.au/aus-smuts/

Partners for Smut Fungi of Australia image library

Queensland Government https://www.daf.qld.gov.au/ 2. Species Information

2.1. Details Specimen Contact: Roger Shivas - [email protected] Author: Roger Shivas Citation: Roger Shivas (2010) Native rice smut(Tilletia australiensis)Updated on 12/9/2010 Available online: PaDIL - http://www.padil.gov.au Image Use: Free for use under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY- NC 4.0)

2.2. URL Live link: http://www.padil.gov.au/aus-smuts/Pest/Main/140170

2.3. Facets Columella: absent Distribution: NT Host Family: Peridium: present Sorus position: inflorescence Sorus shape: globose to short cylindrical Spore balls: absent Spore mass texture: powdery Spore shape: globose or subglobose, ovoid to ellipsoidal, polyhedral or subpolyhedral Spore surface ornamentation: cerebriform, verrucose or tuberculate, verruculose Status: Native Australian Species Sterile cells: present

2.4. Diagnostic Notes **Sori** partly or completely destroying some ovaries of an inflorescence, inconspicuous, concealed by the coriaceous lemma and palea, initially covered by the thin membranous pericarp that ruptures irregularly releasing the black powdery spore mass mixed with numerous sterile cells.

**Spores** globose, subglobose, ovoid, broadly ellipsoidal or subpolyhedrally slightly irregular, 18–27 × 17–23 µm, pale to dark olivaceous brown or chocolate-brown, occasionally with a short or long narrow hyaline hyphal appendage; wall c. 2.5 µm thick, with blunt warts that, in surface view, appear as small darker rounded or polygonal areas, 10–16 per spore diameter, isolated or in some spores 2–several confluent, rarely forming short irregular rows; in optical median view 38–57 warts on the spore circumference, 0.5–1.0 µm high, embedded in a thin hyaline sheath; spore profile wavy or smooth due to the sheath.

**Sterile cells** globose, ovoid, ellipsoidal to irregular with slightly flattened sides, rarely with a short papilla or a hyphal appendage, 12–30 × 11–20 µm, hyaline, guttulate; wall slightly uneven, 1–3 µm thick, smooth or with a trace of ornamentation (intermediate forms). 3. Diagnostic Images

Tilletia australiensis on Oryza rufipogon - Tilletia australiensis on Oryza rufipogon - BRIP 49645. Scale bar = 1 mm NT-Ds 20853. Scale bar = 5 mm Host symptoms: Roger Shivas DEEDI Host symptoms: Jose Liberato Department of Resources

Tilletia australiensis on Oryza rufipogon - Tilletia australiensis on Oryza rufipogon - BRIP 49645. Scale bar = 10 µm BRIP 49645. Scale bar = 10 µm Light micrograph: Roger Shivas DEEDI Scanning electron micrograph: Desley Tree DEEDI

Results Generated: Sunday, October 3, 2021