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Colletotrichum horii B.S. Weir & P.R. Johnst. 2010

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Colletotrichum horii B.S. Weir & P.R. Johnst., Mycotaxon 111 211 (2010)
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010

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Exotic
Present
New Zealand
Political Region

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B.S. Weir & P.R. Johnst.
B.S. Weir & P.R. Johnst.
2010
211
replacement, replacement name
ICN
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Japan
species
Colletotrichum horii
horii, after Prof. Shotaro Hori, Japanese researcher who first isolated and named Gloeosporium kaki.

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Colletotrichum horii B.S. Weir & P.R. Johnst. 2010

OTHER COLLECTIONS EXAMINED — China: on Diospyros kaki rot of unripe fruit, Jingze Zhang, May 2002 (TSG001 = ICMP 17968 and TSG002 = ICMP 17969 – living cultures). Japan: Fukuoka, on D. kaki young shoot, Y. Kajitani, May 1993 (MAFF 306429 = ICMP 17970 – living cultures). New Zealand: Northland, Ohaewai, Hall-Wright orchard, on D. kaki rot of unripe fruit, A. Clarke, 1990 (PDD 62825 – dried herbarium specimen, ICMP 12951 – living culture derived from herbarium specimen). Bay of Plenty, Te Puke, on D. kaki lesions on living stems and unripe fruit, S. Parkes, P. Glucina, Jan. 1989 (PDD 57148 – dried herbarium specimen, ICMP 12942 – living culture derived from herbarium specimen). Bay of Plenty, Te Puke, on D. kaki rot of unripe fruit, M.A. Manning MM150, June 2002 (ICMP 14918 – living culture). Bay of Plenty, Katikati, on D. kaki ripe fruit rot, M.A. Manning, 15 June 1989 (PDD 55534 – dried herbarium specimen, ICMP 18126 – living culture derived from herbarium specimen).
Colonies on Difco PDA variable. Isolates from Japan 55–60 mm diam. after 12 days, colonies uniform in appearance, aerial mycelium low, pale grey (1B1), cottony, conidia develop across whole colony, forming slimy, pale orange (5A2) conidial masses mostly close to agar surface but also amongst the aerial mycelium, sometimes associated with dark-based conidiomata. In reverse, brown (6E6) pigments towards centre of colony, greenish grey (30E2) near margin, overlaid with narrow, darker concentric bands. Margin of colony regular. Conidiomata comprise groups of closely packed hyphae with short-cylindric to more or less globose cells 3.5–5 μm diam. with walls dark and slightly thick. Setae scattered, 50–80(–140) μm long, 6–8 μm diam. at swollen basal cell, then tapering gradually to small, rounded apex, wall thick and dark. Conidiogenous cells held on the dark-walled cells, cylindric, 8–15 X 3.5–5 μm, wall thickened at the single apical conidiogenous locus. Conidia (13–)15–21(–23) X 4–5.5 μm (mean 17.6 X 4.8 μm, n = 76), straight, ends broadly rounded, mostly cylindric, a few tapering towards the base. Isolates from New Zealand and China 68–73 mm diam. after 12 days, colonies with aerial mycelium sparse, or dense and cottony, pale grey (1B1) to grey (1E1), sometimes with small clumps of dark grey (1F1) mycelium on surface, conidial ooze orange (6B7), restricted to tops of the dark, more or less round conidiomata. In reverse, dark conidiomata and orange spore masses show through from colony surface, sometimes overlaid with greenish grey (26F2) pigment within the agar. Margin of colony either regular or irregularly scalloped. Conidiogenous cells and setae the same as Japanese isolates. Conidia 16–29.5(–35) X (4–)4.5–6(–7) μm (mean 21.8 X 5.0 μm, n = 182), straight, ends broadly rounded, some cylindric but most taper gradually toward the basal end. Appressoria short-cylindric, usually uniform in outline, a few irregularly lobed, 9.5–13.5 X 6–8.5 μm.
Associated with lesions on unripe fruit, young stems and twigs. On unripe fruit, lesions slightly sunken, more or less round, very dark to black, acervuli erumpent covered with orange conidial masses, present near centre of lesions. Twigs and young stems with tip dieback and lesions, dark grey to black, elliptic, extending along one side of stem, erumpent acervuli and pale conidial masses near margins of lesions, bark often lost from stem in central part of lesion
Japan, on Diospyros kaki, N. Nishihara A71, 1959, (TNS-F-26102 – dried culture here designated as neotype of Gloeosporium kaki Hori; isoneotype PDD 98210; living cultures derived from neotype – IFO 7478 = NBRC 7478 = ICMP 10492).

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Colletotrichum "gloeosporioides Group D" Johnst.
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Colletotrichum horii B. Weir & P.R. Johnst. (2010)
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Colletotrichum horii B. Weir & P.R. Johnst. 2010
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Colletotrichum horii B. Weir & P.R. Johnst. 2010
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Colletotrichum horii B. Weir & P.R. Johnst. 2010
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Colletotrichum horii B. Weir & P.R. Johnst. (2010)
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Gloeosporium kaki S. Ito 1911
Gloeosporium kaki S. Ito 1911
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Gloeosporium kaki Hori 1910
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010

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Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
China
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
Japan
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
New Zealand
Bay of Plenty
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
New Zealand
Northland
Colletotrichum horii B.S. Weir & P.R. Johnst. 2010
New Zealand
Waikato

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Etymology
horii, after Prof. Shotaro Hori, Japanese researcher who first isolated and named Gloeosporium kaki.

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628bee79-28c0-44d8-820b-a8d39b9ec44e
scientific name
Names_Fungi
24 June 2009
31 December 2021
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