Erysiphe malvae Heluta
Authors/Creators
- 1. Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, No. 2888 Xincheng Street, Changchun 130118, Jilin Province, China
- 2. Laboratory of Plant Pathology, College of Plant Protection, Jilin Agricultural University, No. 2888 Xincheng Street, Changchun 130118, Jilin Province, China
- 3. Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education, Jilin Agricultural University, No. 2888 Xincheng Street, Changchun 130118, Jilin Province, China & College of Chemistry and Life Sciences, Chifeng University, Chifeng 024000, Inner Mongolia Autonomous Region, China
- 4. Key Laboratory of Integrated Pest Management on Crops in Northwestern Oasis, Ministry of Agriculture and Rural Affairs, National Plant Protection Scientific Observation and Experiment Station of Korla, Xinjiang Key Laboratory of Agricultural Biosafety, Institute of Plant Protection, Xinjiang Uygur Autonomous Region Academy of Agricultural Sciences, Urumqi 830091, Xinjiang, China
Description
Erysiphe malvae Heluta, Ukrayins’k. Bot. Zhurn. 47 (4): 75, 1990.
Fig. 7
Description.
Mycelium on leaves and stems, effuse or in irregular powdery layers, white, persistent; hyphae 3–8 μm wide; hyphal appressoria nipple-shaped to lobed. Asexual morph: Conidiophores erect, sometimes slightly flexuous, 62–116 (– 133) × 5–9 μm (without conidia), foot cells cylindrical, straight, 33–69 × 5–9 μm, followed by 1–2 cells, significantly shorter or longer than the foot cells, sometimes about as long as foot cells; conidia single, cylindrical, ellipsoid-cylindrical, 25–42 (– 46) × 12–18 μm, length / width ratio 1.6–4.0, colorless; the germ tube subterminal, medium length, club-shaped, apex simple or somewhat bent and swollen.
Host.
Malva pusilla (Malvaceae).
Distribution.
Asia (China, Iran and Israel), Europe (Ukraine).
Additional material examined.
China, Yunnan Prov. • 1; Kunming City; 25°6'51"n, 102°45'9"e; ca. 1890 m a. s. l.; 26 Jun. 2019; Shu-Rong Tang & Jing Feng leg.; on M. pusilla; HMJAU -PM 92233. • 1; Kunming City; 25°3'27"n, 102°41'55"e; alt. 1920 m a. s. l.; 27 Jun. 2019; Shu-Rong Tang & Jing Feng leg.; HMJAU -PM 92234.
Notes.
Erysiphe malvae was initially described from Europe (Ukraine) and subsequently documented in Asia (Iran and Israel), with its most recent record in Nepal (Adhikari 2021). This represents the first confirmed occurrence of this pathogen in China, where the specimen was collected in Yunnan Province in 2019. Morphological comparison of the Chinese anamorphs revealed fundamental congruence with the original description by Braun and Cook (2012), except for a discrepancy in subsequent cell count: our specimens exhibited 1–2 cells following the foot cells, compared to the 1–3 cells reported in the type description.
Sequence-based verification confirmed the taxonomic identity with E. malvae (on Malva pusilla), with its phylogenetic position within the E. betae / E. heraclei / E. malvae complex clade (Figs 1, 2).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- HMJAU
- Material sample ID
- HMJAU-PM 92233 , HMJAU-PM 92234
- Event date
- 2019-06-26 , 2019-06-27
- Verbatim event date
- 2019-06-26 , 2019-06-27
- Scientific name authorship
- Heluta
- Kingdom
- Fungi
- Phylum
- Ascomycota
- Order
- Helotiales
- Family
- Erysiphaceae
- Genus
- Erysiphe
- Species
- malvae
- Taxon rank
- species
References
- Adhikari MK (2021) New record of two parasitic fungi on Malva sylvestris L. from Nepal. Journal of Plant Research 19: 12–17.
- Braun U, Cook RTA (2012) Taxonomic manual of the Erysiphales (powdery mildews). CBS Biodiversity Series No. 11, Utrecht the Netherland, 707 pp.