Trichoderma vermifimicola Jing Z. Sun & X.Z. Liu, 2020
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publication ID |
https://dx.doi.org/10.3897/mycokeys.73.51424 |
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persistent identifier |
https://treatment.plazi.org/id/F20EA222-A753-5CD4-ABBF-A000DCDE66A2 |
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treatment provided by |
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scientific name |
Trichoderma vermifimicola Jing Z. Sun & X.Z. Liu |
| status |
sp. nov. |
Trichoderma vermifimicola Jing Z. Sun & X.Z. Liu sp. nov. Fig. 3 View Figure 3
Etymology.
Latin, vermifimicola , refers to the habitat of the type species.
Type.
China. Yongning, Yinchuan, the Ningxia Hui Autonomous Region, 40°0'41"N, 116°23'37"E, ca. 1678 m elev., from the substrates for earthworm cultivation, 18 Oct 2018, Jing Z. Sun (HMAS 248255, holotype), ex-type culture CGMCC 3.19694.
Description.
On CMD after 72 h, colony radius 49-51 mm at 25 °C, 51-52 mm at 30 °C, 4-5 mm at 35 °C. Colony hyaline, irregularly circular, indistinctly zonate; mycelium loose. Aerial hyphae short, inconspicuous. No diffusing pigment, not distinct odor. Conidial production noted after 3 days, starting around the inoculum (Fig. 3B View Figure 3 ). Small pustules formed at the colony margin, first white, turning blue-green after 7 d, with hairs protruding beyond the surface. Chlamydospores unobserved.
On PDA after 72 h, colony radius 55-58 mm at 25 °C, 55-56 mm at 30 °C, 5-6 mm at 35 °C. Colony white-green to bright green, regularly circular, distinctly zonate; mycelium dense and radial. Aerial hyphae short, inconspicuous. No diffusing pigment, not distinct odor. Conidial production noted after 2 days, starting around the inoculum, effuse in the aerial hyphae, first white, turning green after 2 d (Fig. 3A View Figure 3 ). Chlamydospores unobserved.
On SNA after 72 h, colony radius 48-50 mm at 25 °C, 51-52 mm at 30 °C, 3-4 mm at 35 °C. Colony hyaline, regularly circular, distinctly zonate; mycelium loose, especially at the margin. Aerial hyphae short, inconspicuous. No diffusing pigment, not distinct odor. Conidial production noted after 2 days, starting around the inoculum, effuse in the aerial hyphae. Small pustules formed along with two concentric rings, first white, turning yellow-green after 3 d, with hairs protruding beyond the surface (Fig. 3C View Figure 3 ). Conidiophores pyramidal with opposing branches, the distance between branches relatively large, each branch terminating in a whorl of 2-3 phialides, phialides sometimes solitary on the main axis (Fig. 3F, H, K View Figure 3 ); whorls typically cruciate, but often nearly verticillate (Fig. 3K View Figure 3 ); rarely conidiophores nodose and phialides disposed in more or less botryose clusters (Fig. 3H View Figure 3 ). Phialides ampulliform to lageniform, often constricted below the tip to form a narrow neck, hyaline, (4.4-)5.0-10.5(-11.2) × (2.0-)2.5-3.0(-3.5) µm (x̄ = 6.6 × 2.7 μm, n = 30), length/width ratio (1.5-)1.8-2.8(-5.3) (x̄ = 2.4, n = 30), base 1.6-2.5 μm (x̄ = 1.9 μm) (Fig. 3G, I, K View Figure 3 ). Conidia ovoid to subglobose, smooth, hyaline when young, becoming green to dark green with age, (2.0-)2.3-2.6(-3.0) × (1.5-)2.0-2.4(-2.8) µm (x̄ = 2.4 × 2.2 μm, n = 50), length/width ratio (1.0-)1.1-1.4(-1.7) (x̄ = 1.2, n = 50) (Fig. 3J View Figure 3 ). Chlamydospores unobserved. No odor; no diffusing pigment observed.
Additional specimen examined.
China. Xixia District, Yinchuan, Ningxia Hui Autonomous Region, 38°38'52"N, 106°9'33"E, ca. 1127 m elev., from rhizosphere soil of Lycium chinois , 17 Oct 2018, Jing Z. Sun, living CGMCC 3.19697.
Teleomorph.
Undetermined.
Note.
Characterized by tree-like conidiophores, verticillate or in whorls of 3-4, ampulliform to lageniform phialides (5.0-10.5 × 2.5-3.0 μm), ovoid to subglobose conidia (2.4-2.6 × 2.0-2.5 μm). Differs from Trichoderma simmonsii by forming loose branches in whorls, relatively longer and thinner phialides, smaller conidia, and the fewer pustules on SNA.
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