Biodiversity Data Journal :
Taxonomy & Inventories
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Corresponding author: Dian-Ming Hu (hudianming1@163.com), Zhi-Jun Zhai (zhjzh002@163.com)
Academic editor: Ning Jiang
Received: 26 Aug 2022 | Accepted: 17 Oct 2022 | Published: 27 Oct 2022
© 2022 Yu Liu, Gui-Ping Xu, Xin-Yi Yan, Min-Hui Chen, Yang Gao, Hai-Jing Hu, Hai-Yan Song, Dian-Ming Hu, Zhi-Jun Zhai
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Liu Y, Xu G-P, Yan X-Y, Chen M-H, Gao Y, Hu H-J, Song H-Y, Hu D-M, Zhai Z-J (2022) Phaeoisaria laianensis (Pleurotheciales, Pleurotheciaceae), a new species from freshwater habitats in China. Biodiversity Data Journal 10: e94088. https://doi.org/10.3897/BDJ.10.e94088
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Freshwater fungi play an indispensable role in the ecosystem and have great research value. Based on morphological and phylogenetic analyses of a concatenated dataset of ITS, LSU and SSU sequences, a new species, Phaeoisaria laianensis, was introduced as a freshwater hyphomycete from Anhui Province, China.
Phaeoisaria laianensis was morphologically described as erect, rigid, dark brown to black, velvety synnemata which has macronematous, septate, branched, brown to dark brown, parallel adpressed conidiophores with polyblastic, integrated, terminal, hyaline to pale brown, smooth, denticulate, sympodial conidiogenous cells and ellipsoidal to obovoid, rounded at the apex, obtuse and tapering towards base, septate, guttulate conidia. Based on molecular and morphological characteristics, it is confirmed to be a new species. All illustrations and descriptions have been provided.
Ascomycota, Phaeoisaria, morphology, phylogenetic anaysis, taxonomy
Phaeoisaria (Pleurotheciales) was established by
In the past decades, an increasing number of new species was assigned to Phaeoisaria by distinguishing characters (
Submerged rotting wood samples were gathered from Laian County, Anhui Province, China and were brought back to the laboratory to be incubated in plastic boxes at room temperature. Fungi on the host surface were observed with a Nikon SMZ-1270 microscope (Nikon Corporation, Japan) and morphologically photographed with a Nikon ECLIPSE Ni-U compound microscope (Nikon Corporation, Japan), which was equipped with a Nikon DS-Fi3 camera. The structure of fungi was determined by PhotoRuler 1.1.3.0 (The Genus Inocybe, Hyogo, Japan) and figures were processed by Adobe Photoshop 2020 (Adobe Systems, USA). According to the method of
By using the improved CTAB method (
The sequences of 69 strains were retrieved from recent articles (
Sequences used in this study. Note: Ex-type strains are in bold. The sequences of new species are indicated as underlined and unavailable sequences in GenBank are indicated by hyphen "-".
Taxonomy | Strain | GenBank accession numbers | ||
ITS | LSU | SSU | ||
Adelosphaeria catenata |
CBS 138679 | KT278721 | KT278707 | KT278692 |
Ascotaiwania fusiformis |
MFLUCC 15-0625 | – | KX550894 | KX550898 |
Ascotaiwania fusiformis |
MFLU 15-1156 | MG388215 | NG–057114 | – |
Ascotaiwania lignicola |
NIL 00005 | HQ446341 | HQ446364 | HQ446284 |
Ascotaiwania sawadae |
SS00051 | HQ446340 | HQ446363 | HQ446283 |
Bactrodesmiastrum obovatum |
FMR 6482 | FR870264 | FR870266 | – |
Bactrodesmiastrum pyriforme |
FMR 10747 | FR870263 | FR870265 | – |
Brachysporiella setosa |
HKUCC 3713 | – | AF132334 | – |
Canalisporium exiguum |
SS 00809 | GQ390296 | GQ390281 | GQ390266 |
Canalisporium grenadoideum |
BCC 20507 | – | GQ390267 | GQ390252 |
Canalisporium pulchrum |
SS03982 | GQ390292 | GQ390277 | GQ390262 |
Conioscypha lignicola |
CBS 335.93 | – | AY484513 | JQ437439 |
Conioscypha minutispora |
CBS 137253 | – | MH878131 | – |
Conioscypha peruviana |
CBS 137657 | – | KF781539 | – |
Conioscypha varia |
CBS 113653 | – | AY484512 | AY484511 |
Fuscosporella pyriformis |
MFLUCC 16-0570 | MG388217 | KX550896 | KX550900 |
Helicoon farinosum |
DAOM 241947 | JQ429145 | JQ429230 | – |
Leotia lubrica | AFTOLID 1 | DQ491484 | AY544644 | AY544746 |
Melanotrigonum ovale |
CBS 138815 | KT278722 | KT278711 | KT278698 |
Melanotrigonum ovale |
CBS 138744 | KT278725 | KT278710 | KT278697 |
Melanotrigonum ovale |
CBS 138743 | KT278724 | KT278709 | KT278696 |
Melanotrigonum ovale |
CBS 138742 | KT278723 | KT278708 | KT278695 |
Microglossum rufum | OSC100641 | – | DQ470981 | DQ471033 |
Mucispora obscuriseptata |
MFLUCC 15-0618 | MG388218 | KX550892 | KX550897 |
Parafuscosporella moniliformis |
MFLUCC 15-0626 | MG388219 | KX550895 | KX550899 |
Phaeoisaria annesophieae |
CBS 143235 | MG022180 | MG022159 | – |
Phaeoisaria annesophieae |
MFLU190531 | MT559109 | MT559084 | – |
Phaeoisaria aquatica |
MFLUCC 16-1298 | MF399237 | MF399254 | – |
Phaeoisaria clematidis |
MFLUCC 16-1273 | MF399229 | MF399246 | – |
Phaeoisaria clematidis |
MFLUCC 17-1341 | MF399230 | MF399247 | MF399216 |
Phaeoisaria clematidis |
MFLUCC 17-1968 | MG837022 | MG837017 | MG837027 |
Phaeoisaria clematidis |
DAOM 226789 | JQ429155 | JQ429231 | JQ429243 |
Phaeoisaria dalbergiae |
CPC 39540 | OK664703 | – | – |
Phaeoisaria fasciculata |
CBS 127885 | KT278719 | KT278705 | KT278693 |
Phaeoisaria fasciculata |
DAOM 230055 | KT278720 | KT278706 | KT278694 |
Phaeoisaria filiformis |
MFLUCC 18-0214 | MK878381 | MK835852 | MK834785 |
Phaeoisaria guttulata |
MFLUCC 17-1965 | MG837021 | MG837016 | MG837026 |
Phaeoisaria laianensis |
CCTCC AF 2022069 | ON937559 | ON937557 | ON937562 |
Phaeoisaria laianensis |
CCTCC AF 2022073 | ON937560 | ON937561 | ON937558 |
Phaeoisaria loranthacearum |
CBS 140009 | KR611888 | MH878676 | – |
Phaeoisaria loranthacearum |
BYCDW25 | MG820097 | – | – |
Phaeoisaria loranthacearum |
BYCDW24 | MG820098 | – | – |
Phaeoisaria microspora |
MFLUCC 16-0033 | MF671987 | MF167351 | – |
Phaeoisaria pseudoclematidis |
MFLUCC 11-0393 | KP744457 | KP744501 | KP753962 |
Phaeoisaria sedimenticola |
CGMCC3.14949 | JQ074237 | JQ031561 | – |
Phaeoisaria sedimenticola |
S-908 | MK878380 | MK835851 | – |
Phaeoisaria siamensis |
MFLUCC 16-0607 | MK607610 | MK607613 | MK607612 |
Phaeoisaria sparsa |
FMR 11939 | – | HF677185 | – |
Phaeoisaria synnematica |
NFCCI 4479 | MK391494 | MK391492 | – |
Phragmocephala stemphylioides |
KAS 4277 | KT278730 | KT278717 | – |
Plagiascoma frondosum |
CBS 139031 | – | KT278713 | KT278701 |
Pleurotheciella centenaria |
DAOM 229631 | JQ429151 | JQ429234 | JQ429246 |
Pleurotheciella rivularia |
CBS 125237 | JQ429161 | JQ429233 | JQ429245 |
Pleurotheciella rivularia |
CBS 125238 | JQ429160 | JQ429232 | JQ429244 |
Pleurotheciella uniseptata |
KUMCC 15-0407 | MF399231 | MF399248 | – |
Pleurothecium aquaticum |
MFLUCC 17-1331 | MF399245 | MF399263 | – |
Pleurothecium aquaticum |
MFLUCC 21-0148 | OM654775 | OM654772 | OM654807 |
Pleurothecium floriforme |
MFLUCC 15-0628 | KY697281 | KY697277 | KY697279 |
Pleurothecium obovoideum |
CBS 209.95 | EU041784 | EU041841 | – |
Pleurothecium pulneyense |
MFLUCC 16-1293 | – | MF399262 | MF399228 |
Pleurothecium recurvatum |
CBS 138747 | KT278728 | KT278714 | KT278703 |
Pleurothecium recurvatum |
CBS 131272 | JQ429149 | JQ429237 | JQ429251 |
Pleurothecium recurvatum |
CBS 101581 | JQ429148 | AF261070 | JQ429248 |
Pleurothecium semifecundum |
CBS 131482 | JQ429158 | JQ429239 | JQ429253 |
Pleurothecium semifecundum |
CBS 131271 | JQ429159 | JQ429240 | JQ429254 |
Savoryella longispora |
SAT 00322 | HQ446359 | HQ446380 | HQ446302 |
Savoryella paucispora |
SAT 00866 | – | HQ446381 | HQ446303 |
Savoryella verrucosa |
SS 00052 | HQ446353 | HQ446374 | HQ446296 |
Sterigmatobotrys macrocarpa |
DAOM 230059 | JQ429154 | GU017316 | – |
Sterigmatobotrys macrocarpa |
PRM 915682 | JQ429153 | GU017317 | JQ429255 |
Sterigmatobotrys rudis |
DAOM 229838 | JQ429152 | JQ429241 | JQ429256 |
Saprobic on decaying wood submerged in freshwater habitats. Sexual morph: Undetermined. Asexual morph: Colonies effuse, solitary, scattered, dark brown to black, hairy, covered by white conidial mass. Mycelium partly superficial, partly immersed. Synnemata 290–848 × 9.3–30.7 µm (x̅ = 532 × 18.6, SD = 159 × 5, n = 20), erect, rigid, dark brown to black, velvety, smooth, composed of compactly and parallel adpressed conidiophores. Conidiophores 116.2–491.1 × 2–3.2 µm (x̅ = 276.1 × 2.4, SD = 96.7 × 0.5, n = 10), macronematous, synnematous, septate, branched, brown to dark brown, smooth. Conidiogenous cells 8.3–27.5 × 2.3–3.8 µm (x̅ = 17.1 × 2.7, n = 10), polyblastic, integrated, terminal, hyaline to pale brown, smooth, denticulate, sympodial, each with several denticulate conidiogenous loci, 0.8–1.6 × 0.4–0.8 µm (x̅ = 1.3 × 0.7, n = 10). Conidia 5–7.2 × 1.7–2.9 µm (x̅ = 5.9 × 1.7, SD = 0.5 × 0.3, n = 50), ellipsoidal to obovoid, straight, rounded at the apex, obtuse and tapering towards base, hyaline, aseptate, guttulate, smooth-walled. (Fig.
Culture characteristics: Conidia germinated within 24 h in which germ tubes were produced from both ends or sides at 28℃ on PDA. The colony on PDA grows up slowly and reaches 24.5 mm in 26 days, periphery grey, surface folded, middle grey-green to black, raised with mycelium in the centre, covered with lots of white conidia, powdery, reverse grey to black.
Material examined: China, Anhui Province, alt. 35 m, near 32.66°N, 118.65°E, on decaying wood submerged in a freshwater stream, 6 May 2021, Y. Liu, G.P. Xu and Z.J. Zhai, LKJ17 (HFJAU 10040, holotype), ex-type living culture, CCTCC AF 2022069 = CCTCC AF 2022073.
The name reflects the district where this fungus was found.
Phylogenetic analysis shows that Phaeoisaria laianensis is a phylogenetically-distinct species, most closely related to P. dalbergiae and then to P. clematidis (Fig.
Synopsis 1 of asexual morphological characteristics of Phaeoisaria species. Note: Hyphens “-” are indeterminate or unavailable data.
Species |
Synnemata (µm) |
Synnemata characteristics |
Conidiophores (µm) |
Conidiophores characteristics |
Conidia (µm) |
References |
Phaeoisaria laianensis |
290‒848 × 9.3‒30.7 |
Erect, rigid, dark brown to black, velvety, smooth, composed of compactly and parallel adpressed conidiophores |
116.2‒491.1 × 2‒3.2 |
Macronematous, synnematous, septate, branched, brown to dark brown, smooth |
5‒7.2 × 1.7‒2.9 |
This study |
P. aguilerae | - | - | - | - |
18–29.5 × 4–5 |
|
P. annesophieae |
- | - |
Conidiophores indeterminate |
Sometimes grouping in strands of 2–4 hyphae, a rising from aerial hyphae, cylindrical, hyaline to pale brown |
4.5–9 × 2–3.5 |
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P. aquatica | - |
Erect, rigid, dark brown to black, velvety, smooth |
1028–1262 × 3.5–4.5 |
Macronematous, synnematous, brown to dark brown, smooth |
6.5–7.5 × 2.5–3.5 |
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P. bambusae | - |
Erect, rigid, dark brown toblack, velvety, smooth |
- |
Macronematous, synnematous, brown to dark brown, smooth |
- |
|
P. caffra | - |
Synnemata composed of at least 10 adpressed hyphae |
- |
Conidiophores not tuberculate |
7.5–12 × 2.5–3.5 |
|
P. clavulata | - |
Stiff synnemata, composed of parallel hyphae, packed with slender, curved conidiogenous cells with very thin, fragile conidiogenous rachides |
- | - | 1–2 long |
|
P. clematidis |
1000–1500 × 20–80 |
Conidiomata scattered, indeterminate, erect, rigid, superficial, dark brown composed of compact appressed conidiophores |
312–568 × 2.5–3.5 |
Macronematous, septate, branched, brown to dark brown, smooth |
4–10 × 1.5–2.5 |
|
P. curvata | - | - |
Conidiophores indeterminate |
- |
(4–)6–8(–11) × (1–)2–3 |
|
P. dalbergiae | - | - |
10–50 × 1.5–2.5 |
Indeterminate, erect, subcylindrical, hyaline, smooth, 0–2-septate, unbranched or branched at apex |
0.5 µm diam, (5 –)6–7 × (1.5–)2 |
|
P. fasciculata | - |
Synnemata absent |
25–65 × 3.0–3.5 |
Macronematous, arising from brown, thick-walled cells, cylindrical, pale brown, subhyaline towards the apex, unbranched, smooth-walled |
6.0–8.0 (–9.0) × 2.0 |
|
P. filiformis | - | - | - | - | - |
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P. glauca | - | - |
Conidiophores indeterminate |
- |
2.5–3.5 × 1.6–2.2 |
|
P. guttulata | - |
Erect, rigid, dark brown to black, velvety, smooth, composed of compactly and parallel adpressed conidiophores |
480–700 × 2–5 |
Macronematous, synnematous, erect, septate, smooth, mid-brown to dark brown |
3.5–5.5 × 2.5–4.8 |
|
P. infrafertilis | - |
Synnemata narrow, composed of only 5-6 brown adpressed hyphae |
- | - |
19.5–22 × 2–3 |
|
P. loranthacearum |
- | - |
10–30 × 2–3 |
Arising from superficial hyphae, erect, solitary, branched at base or not, subcylindrical, straight to geniculate-sinuous, 1–3-septate, hyaline |
(5)7– 8(9) × (1.5) 2(3) |
|
P. magnifica |
- |
Synnemata brush-like, synnemata with flaring hyphae at the tip |
- |
Growing well away from the column in the apical portion |
5–6.5 × 4–4.5 |
|
P. microspora |
35–238 µm long, 4–31 µm wide at the base, 5–35 µm wide at the apex |
Erect, straight or flexuous, dark brown at base, pale brown at apex |
25–225 × 1–3 |
Macronematous, synnematous, septate, branched at the apex, smooth, pale to dark brown |
4.5–6.9 × 1.3–3.1 |
|
P. muscariformis |
- | - | - | - |
12–22 × 4 |
|
P. pseudoclematidis |
200–500 µm long, 40–80 µm wide at the base, 40– 60 µm wide in the middle, 20–30 µm wide at the apex |
Erect, rigid, dark brown, velvety, smooth, composed of compactly and parallel adpressed conidiophores |
50–500 × 2–3 |
Macronematous, synnematous, brown to dark brown, septate, branched, smooth |
5–8.5 × 3–4 |
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P. sedimenticola |
up to 4000 µm high or sometimes longer, 70– 90 µm wide |
Erect, cylindrical to subulate, consisting of very regular, parallel, brown hyphae |
aseptate (3.5–)4.5–5.5(–7.5) × (2.5–)3–4(–4.5) 1-septate (4.5–)5.5–6.5(–9) × (2–)2.5–3.5(–4.5) |
|
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P. siamensis |
330–380 × 20–25(–30) |
Conidiomata scattered, indeterminate, erect, rigid, superficial, dark brown composed of compactly appressed conidiophores |
2–2.5(–3) µm wide |
Macronematous, in synnematous conidiomata, scattered, synnemata subulate or cylindrical, indeterminate, at the base 13–15 µm beneath the fertile portion with conidiogenous cells, composed of medium to dark brown, smooth, septate parallel hyphae, splaying out at the middle to apex |
5–8 × 3–4 |
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P. sparsa |
- |
Synnemata composed of at least 10 adpressed hyphae |
- |
Not tuberculate |
10–15.5 × 2.5–3.5 |
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P. sparsa var. cubensis |
- | - | - | - |
(4–)7– 11(–17) ×(1.5–) 2– 3(–4) |
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P. synnematica |
399–960 × 12–30 |
Synnematal, erect, rigid, dark brown to olivaceous brown, composed of compactly parallel appressed conidiophores, cylindrical to clavate |
1.5–960 × 1–3.5 |
Macronematous to semi- macronematous, highly geniculate, dark brown to olivaceous brown, synnematous, simple to dichotomously branched, emerging out at the apex and along the sides of the upper half or two thirds of each synnema, dark brown at the base, brown to pale brown |
4–11 × 2–5 |
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P. tuberculata |
- |
Synnemata composed of at least 10 adpressed hyphae |
- |
Conspicuously tuberculate |
8–13.5 × 1.5–2 |
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P. uniseptata |
- | - | - | - |
(3.5–) 5.5– 7.5 (–10) × 1.5–3 |
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P. vietnamensis |
330–380 µm high, 20–25(– 30) µm wide at the base |
- |
2–2.5(–3) µm wide |
Macronematous, in synnematous conidiomata, scattered, synnemata subulate or cylindrical, indeterminate composed of medium to dark brown, smooth, septate parallel hyphae |
18.5– 23.5 × 4.5–5 |
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Phylogenetic tree of Bayesian analysis, based on a concatenated alignment of ITS, LSU and SSU sequences. Branch support is shown at the nodes, Maximum Likelihood bootstrap support (BS, black) ≥ 60% and Bayesian posterior probability (PP, red) ≥ 0.95. Leotialubrica (AFTOLID 1) and Microglossum rufum (OSC100641) are selected as the outgroup taxa. The new species is marked in red and ex-type strains are in bold.
Phylogenetic analysis
The aligned matrix for the combined analysis, ITS+LSU+SSU had 3105 bp, including ITS = 509 bp, LSU = 1172 bp and SSU = 1424 bp. No topological conflict exists between the tree generated by ML analysis and the Bayesian tree. The Bayesian tree is shown with BS and PP in Fig.
In our molecular phylogenetic tree, Phaeoisaria consists of 15 species and is supported as a monophyletic group (BS/PP = 59/1.00, Fig.
Synopsis 2 of asexual morphological characteristics of Phaeoisaria species. Note: Hyphens "-" are indeterminate or unavailable data.
Species | Conidia septation | Conidia characteristics | Host | District | References |
Phaeoisaria laianensis | Aseptate | Ellipsoidal to obovoid, straight, rounded at the apex, obtuse and tapering towards base, hyaline, guttulate, smooth-walled | Decaying wood | China, Anhui Province | This study |
P. aguilerae | 1-septate, rarely 2–3-septate | Clavate or cylindrical, curved, with obtuse, rounded apex, slightly uncinate, and truncate base, hyaline, smooth |
Decaying twig submerged in river |
Cuba |
|
P. annesophieae | Aseptate | Ellipsoidal to obovoid, straight or slightly curved, rounded at the ends or sometimes tapering towards the base, hyaline, guttulate, smooth-walled | Isolated from soil | The Netherlands, Geldermalsen |
|
P. aquatica | Aseptate | Ellipsoidal to obovoidal, rounded at the apex, hyaline, with two guttules smooth-walled |
Decaying wood submerged in Jinsha River |
China, Yunnan Province |
|
P. bambusae | aseptate or septate | Ellipsoidal to obovoidal, fusiform-cylindrical to falcate, hyaline, straight, guttulate, smooth-walled |
Unidentified submerged bamboo |
Indonesia |
|
P. caffra | Aseptate, rarely 1-sepate | Conidia straight, ellipsoidal to clavate, obovoid, not attenuated at the apex, pale yellow brown, smooth |
On decaying leaf of Podocarpus |
Cape Province |
|
P. clavulata | Aseptate | Broadly ellipsoidal to ± spherical, subspherical, smooth, hyaline | On rotten decorticated wood | Great Britain |
|
P. clematidis | Aseptate | Obovoidal, rounded at the apex, obtuse and tapering towards base, hyaline, smooth-walled |
Decaying wood submerged in Lancang River |
China, Yunnan Province |
|
P. curvata | Aseptate | Smooth, thin-walled, hyaline, clavate to obovoid and pointed at base, curved, occasionally sickle-shaped | Rotten leaves of Parinari capensis | South West Africa |
|
P. dalbergiae | Aseptate | Solitary, hyaline, smooth, thin-walled, guttulate, subcylindrical to obovoid, tapering towards both ends, apex subobtuse, base with truncate hilum |
On bark of Dalbergia armata |
South africa, Northern Province |
|
P. fasciculata | Aseptate | Ellipsoidal to obovoid, straight, rounded at the apex, obtuse and tapering towards base, hyaline, smooth-walled |
Decorticated wood of Sambucus nigra |
Canada, Ontario, Goulbourn Twp |
|
P. filiformis | - | - |
Decaying wood submerged in freshwater stream |
Thailand, Sai khu Waterfall |
|
P. glauca | Aseptate | Smooth, thin-walled, hyaline, guttuliform to ellipsoidal,with pointed base, occasionally sickle-shaped |
On rotten wood of Quercus sp. |
America, Newfield |
|
P. guttulata | Aseptate | Globose to obovoid, hyaline, smooth-walled, guttulate |
Decaying wood submerged in Suoluo River |
China, Guizhou Province |
|
P. infrafertilis | Aseptate, rarely 1-sepate | Conidia falcate,hyaline |
On dead leaves of Eucalyptus |
Brazil |
|
P. loranthacearum | - | Solitary, hyaline, smooth, fusoidal-ellipsoidal with obtuse ends, straight to falcate, guttulate |
On twigs of Loranthus europaeus |
Germany |
|
P. magnifica | Aseptate | Straight, ellipsoidal to obovo1d, clavate, very pale olivaceous, smooth |
On Bambusa |
New Caledonia |
|
P. microspora | Aseptate | Solitary, fusiform, straight, smooth-walled, guttulate, hyaline | On decaying wood | Thailand, Krabi, Wat ThumSua |
|
P. muscariformis | 3-sepate | Cylindrical-fusiform, subhyaline, smooth |
On leaves of Tiliacora kenyensis |
Kenya |
|
P. pseudoclematidis | Aseptate | Cylindrical-ovate, straight, hyaline, smooth-walled, guttulate |
On dead culm of bamboo (Bambusae) |
Thailand, Chiang Rai |
|
P. sedimenticola | Aseptate, 1-septate | Smooth-walled, hyaline, with a pointed base, usually aseptate when attached to the conidiogenous cells, 0–1-septate after release; aseptate conidia, obovoid to ellipsoidal; 1-septate conidia, obovoid, slightly constricted at septum |
Isolated from surface of marine sediment in intertidal zone |
China, Shandong Province |
|
P. siamensis | Aseptate | Globose to subglobose, hyaline |
Saprobic on decaying fruits |
Thailand, Chiang Mai Province |
|
P. sparsa | 0-3-septate | Fusiform to clavate, conidia straight, ellipsoidal to fusiform, hyaline, not attenuated at the apex |
On bark of Acer spicatum |
Saskatchewan |
|
P. sparsa var. cubensis | 0–1(–4)-septate | Fusiform, cylindrical or clavate, hyaline, sometimes slightly curved |
On dead branch |
Cuba |
|
P. synnematica | 0–1-septate | Dimorphic, clavate to ellipsoidal, cylindrical to falcate, base narrowly truncate, tip obtuse, variable in size, sometimes constricted near septa, 1–2-guttulate, hyaline, smooth-walled |
Dead bark of Azadirachta indica (Meliaceae) |
India, Maharashtra |
|
P. tuberculata | Asepate, rarely 1-sepate | Conidia fusiform, straight, the apex attenuated, hyaline, smooth, guttulate | On Labiatae | Malawi |
|
P. uniseptata | Mostly with a median septum | Two-celled, fusiform, ellipsoid, hyaline, cylindrical or clavate | On dead branch | Cuba |
|
P. vietnamensis | A single median septum | Fusiform-subcylindrical to short obovoid-subclavate, somewhat attenuated towards the base, apex obtuse, straight to slightly curved, not constricted, hyaline, smooth, often guttulate | On bark of a living unidentified liane | South Vietnam, Dong Nai Province |
|
Phaeoisaria predominantly occurs on leaves, barks, decaying wood and twigs of plants from the freshwater or terrestrial habitats (Table
We are grateful to Deng-Mei Fan (Agricultural college, Jiangxi Agricultural University) for very helpful comments on earlier drafts of this manuscript. This study was supported by the National Natural Science Foundation of China (NSFC 32070023 and NSFC 32060014), the Natural Science Foundation of Jiangxi Province (20151BAB214002) and Science and Technology Plan Project of Jiangxi Province (GJJ160417).