16/RR7Q3./6./G/6/6 IMA FUNGUS · VOLUME 3 · NO 1: 1–7 Pilidiella tibouchinae sp. nov. associated with foliage blight of Tibouchina ARTICLE granulosa (quaresmeira) in Brazil %E?6;L6(LE.>T@. 6M#!B N!GVRW/=///B ?@X=1;L Z# .EJ=K0FL!#E([<QR6VWGR/QFNM&0 Abstract: Tibouchina granulosa Melastomataceae M 'F!# Coniella + Diaporthales #F "&J =FPilidiella with the diseased +JM #&N0F Sordariomycetes we conclude that it represents a new species, for which the name Pilidiella tibouchinae systematics Article info:J17>./6.XF1.7!./6.X(1RF./6. INTRODUCTION and damaging diseases affecting T. granulosa [ gardens, and also in nurseries. Tibouchina granulosa Melastomataceae glorytree, is a fast growing tree native that occurs in the Atlantic !" MATERIAL AND METHODS #\" Isolates and parks because of its spectacular violet or pink blossoms Samples of young abnormal branches of Tibouchina %& granulosa bearing diseased leaves were collected at two ' ( ; > ? @ O'P#+.//. < ;# Usually there is a high demand for young T. granulosa plants fungus were deposited in the herbarium at the Universidade ! B B"E ( # \ 0# = are known to be a limiting factor in nursery production of T. BF#= granulosa. However, very little is known about the diseases (et al. .//G( & Chrysoporthe cubensis in the fungal culture collection at the Universidade Federal 1Cryphonectria cubensis on T. granulosa B EJ=K0FL ! # Seixas et al.//2 E EJ M & 0 ;# 133 #B"EEJ 3'3345676.M there are only three records of fungi on this host in the USDA [ !9;./6/ & @ N0F surprising for such a common plant in the neotropics, and ?%F ME&? ? N0F " \< K ? + " J EF MJF R & Here we clarify the identity of the fungus associated with B7@ P 9 @ # % 677Q +;R # ## = B9P677/ ' & N0FGR6QJ;0F © 2012 International Mycological Association You are free to share - to copy, distribute and transmit the work, under the following conditions: Attribution: [ Non-commercial: No derivative works: For any reuse or distribution, you must make clear to others the license terms of this work, which can be found at http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode. Any of the above conditions can be waived if you get permission from the copyright holder. Nothing in this license impairs or restricts the author’s moral rights. VOLUME 3 · NO. 1 1 Miranda et al. JJM 6 RQJ ;0F."&J Slides containing fungal structures were mounted in [7//RR.QJ;0F+JM G/ &"&J2Let al677/+JM6!E J et al .//7 ' ?P?R./[# ARTICLE ''# of fungal structures and measurements, as well as preparation & (E; ' [\R6 ' [ [ %GG/ E Eet al.//V.//7F V 6=&%!' .]<?%F et al ./6/ J' (EFEet al.//7.R:EE '#0E"R@ # ;67W/ "&J !+JM#' [ + et al ./66 &FJ% RESULTS J66Q/RJ'# @&FJ%3 3<<#? F< 6W// "&J +JM ?XEet al.//2 ' Harknessia eucalypti AY720745 AY339313 Coniella australiensis 100 AY339320 75 AY339319 Coniella fragariae 72 AY339317 AY339316 EU301037 100 Pilidiella eucalyptorum AY339338 98 AY339343 Pilidiella macrospora 85 HQ264189 Pilidiella crousii 100 BECM2 90 Pilidiella tibouchinae BECM1 HQ166057 94 Pilidiella granati AY339342 GU062317 Pilidiella sp. 51 30 changes AY339346 65 AY339344 Pilidiella quercicola DQ914688 AY339348 Schizoparme straminea EU301051 AY339324 Pilidiella diplodiella AY339323 AY339333 AY339334 Pilidiella diplodiopsis AY339332 Fig. 1.&[.2'R/<"&J' &5..7E"5/QG2;"5/7/2;E5/WR2&G/#6/// F<=bold # 'Harknessia eucalypti @ FW./W2R 2 IMA FUNGUS Pilidiella tibouchinae sp. nov. Magnaporthe grisea AB026819 ARTICLE Gaeumannomyces graminis var. avenae AF362556 100 Coniochaetidium savoryi AY346276 Coniochaeta velutina EU999180 Family Calosphaeria pulchella AY761075 Ca 100 Togninia novae-zealandiae AY761081 100 Phaeoacremonium sphinctrophorum DQ173151 T 100 Asterosporium asterospermum AB553745 97 Asterosporium asterospermum AB553741 Mazzantia napelli AF408368 Diaporthe perjuncta AF408356 60 Diaporthe pustulata AF408358 88 88 70 Diaporthe padi AF408354 Diaporthe angelicae AY196781 Phaeocytostroma ambiguum FR748102 60 61 Stenocarpella macrospora DQ377934 D Stenocarpella maydis DQ377936 98 Phaeocytostroma sacchari FR748105 Diaporthe detrusa AF408349 Phaeocytostroma plurivorum FR748104 73 Phaeocytostroma megalosporum FR748103 10 changes 100 Valsa ceratosperma AF408386 Valsella adhaerens AF408388 V 78 Leucostoma niveum AF408367 80 Greeneria uvicola AF362570 Melanconiella spodiaea AF408370 M1 Endothiella gyrosa AF362555 89 Cryphonectria macrospora AF408340 Cr Cryphonectria nitschkei AF408341 96 Ophiovalsa betulae AF408375 Phragmoporthe conformis AF408377 G 100 58 63 Gnomonia setacea AF362563 100 Melanconis stilbostoma AF408374 Key to families: Melanconis marginalis AF408373 M2 Ca: Calosphaeriaceae 62 Melanconis alni AF362566 Cr: Cryphonectriaceae Wuestneia molokaiensis AF408390 93 D: Diaporthaceae Harknessia eucalypti AF408363 G: Gnomoniaceae Harknessia gibbosa EF110615 M: Melanconidiaceae 100 Pilidiella eucalyptorum EU754150 T: Togniniaceae Coniella australiensis AF408336 V: Valsaceae 82 Coniella fragariae AF362553 BECM2 Pilidiella tibouchinae 98 59 BECM1 Pilidiella tibouchinae 79 92 Schizoparme botrytidis AF408383 Pilidiella macrospora AY339292 Coniella musaiaensis AF408337 Schizoparme straminea AY339296 M3 57 Pilidiella granati AF408379 53 Pilidiella quercicola AY339293 Pilidiella diplodiopsis AY339287 Pilidiella diplodiella AY339286 Pilidiella diplodiopsis AY339288 Pilidiella sp. AY339295 57 Pilidiella castaneicola AF408378 Fig. 2.&[6Q/'6//<+JM' &5R72E"5/R6R;"5/Q6W;E5/2.6&6/#6/// &# ['Magnaporthe grisea and Gaeumannomyces graminis#avenae@F/.VQ67F!GV.RRV# & "&J &= ' =!6+JM [ ! . & !6&"&J "&J .R < !6' 'R/6 Pilidiella crousii and Pilidiella granati & QV =# 27 +JM R2 < #=#GVV 'Q2/ VOLUME 3 · NO. 1 3 Miranda et al. ARTICLE Fig. 3. Pilidiella tibouchinaeA–D.+Tibouchina granulosaE.EF, G. Vertical section through H, I.EJ, K.E56/3 67/=# Etymology10 R2 # =# R7V Tibouchina !6Q/' [ Diagnosis: Similar to Pilidiella eucalyptorum but lacking !.(+JM!6 conidial germ slits, and similar to P. petrakioidea but lacking #'Pilidiella &&%!'# '#@ Type: Brazil: Minas Gerais: Viçosa, campus of the Universidade Federal de Viçosa, on leaves of Tibouchina granulosa, Q ? ./6/ B. C. Miranda B"E G622G M A pycnidial coelomycete was regularly associated with XEJP=./Q.WMX<=E(E diseased tissues on the samples collected at the two 6QR66E(E6QR6.5EJ6G6R7R " species in the genus Pilidiella0;677G#0et @B"EG622GB"EG62221 al. .//2< "&J5>.Q6WW2>.Q6WWRX+JM5>.Q6WWV>.Q6WWWX Accordingly, a new species name is introduced below to &%!5>.Q6WWQ>.Q6WW7 accommodate the fungus occurring on T. granulosa. Other specimen examined: Brazil: Minas Gerais: Viçosa, campus of Pilidiella tibouchinae %E?;L9 the Universidade Federal de Viçosa, on leaves of T. granulosa, 6W Esp. nov. ?./6/B. C. MirandaB"EG6222 ??RVG77. !G 4 IMA FUNGUS Pilidiella tibouchinae sp. nov. Description: Lesions##[ ! 9 ; ./6/ J# Myrtales, ARTICLE as adaxial straw-coloured necrotic spots, mostly appearing et al. .//G 62 near the leaf veins, becoming yellowish to greyish with a dark families, are known hosts of Schizoparmaceae ! 9 brown to dark purple border, irregularly shaped, coalescing ; ./6/ ! # and leading to necrosis and distortion of large parts of from Myrtaceae Acca, Blepharocalyx, Eucalyptus, Eugenia, X Heteropyxis, Myrcia, Syzygium), Lythraceae Lythrum, " Punica, and CombretaceaeAnogeissus, Anogeissus, symptoms, a shortening of branch internodes, leaf distortion, Terminalia#0et al.//2!9;./6/ bud death, necrosis and die-back of young stems are also J67Q/0;677GPilidiella as a # J # synonym of ConiellaP# # # Conidiomata pycnidial, +JM N0F N0F ' adaxial, subcuticular, solitary, globose to depressed globose, E et al. .//. Pilidiella is distinct 2.RMWR & WRM66.R ) from ConiellaPilidiella has two main morphological criteria brown textura angularis 6MG WM6. ) separating it from Coniella: the presence of conidia that X X conidiophores are hyaline when young becoming pale brown with age formed on a dense, basal, cushion-like aggregation of Coniella Eet al..//. hyaline cells, mostly reduced to conidiogenous cells, # 6R ' QM6R & GM2 ) 6R Coniella # 0 et al .//2 6M.= Conidiogenous cells enteroblastic, ([&6 RM6/ & .MG ) P. tibouchinae has hyaline conidia that become smoky brown smooth, hyaline, with minute collarette, and covered in 16WF Conidia mostly broadly ellipsoidal, often somewhat the phylogenetic analysis place P. tibouchinae in the Pilidiella \## clade, distinct from Coniella ! 6M. E 6/M6G & VMQ ) 1 5 6W < combination of morphological and molecular data, we prefer base, hilum sometimes slightly protuberant, aseptate, hyaline to place this fungus in the genus Pilidiella. 0# when immature, becoming smoky-brown at maturity, smooth, several species in the group still need to be re-examined, as #!.Pilidiella eucalyptorum clusters in the Coniella clade, and C. musariensis clusters in the Pilidiella Culture characteristics1 ?%F (EF 6. ( P. tibouchinae are small when compared 1E=QV to the species of Schizoparmaceae treated by Sutton VX\X 67Q/ 0 ; 677G # 0 et al .//2 mostly composed of immersed mycelium, aerial mycelium ? P. tibouchinae show some # similarity to that of P. eucalyptorum and P. petrakioidea. ?%F X However, conidia of P. tibouchinae lack conidial germ slits web-like white to grey olivaceous, sometimes with some