Enhancing Tea Leaf Disease Identification with Lightweight MobileNetV2

Diseases in tea trees can result in significant losses in both the quality and quantity of tea production.Regular monitoring can help to prevent the occurrence of large-scale diseases in tea plantations.However,existingmethods face challenges such as a high number of parameters and low recognition accuracy,which hinders their application in tea plantation monitoring equipment.This paper presents a lightweight I-MobileNetV2 model for identifying diseases in tea leaves,to address these challenges.The proposed method first embeds a Coordinate Attention(CA)module into the originalMobileNetV2 network,enabling the model to locate disease regions accurately.Secondly,a Multi-branch Parallel Convolution(MPC)module is employed to extract disease features across multiple scales,improving themodel’s adaptability to different disease scales.Finally,theAutoMLforModelCompression(AMC)is used to compress themodel and reduce computational complexity.Experimental results indicate that our proposed algorithm attains an average accuracy of 96.12%on our self-built tea leaf disease dataset,surpassing the original MobileNetV2 by 1.91%.Furthermore,the number of model parameters have been reduced by 40%,making itmore suitable for practical application in tea plantation environments.

Taxonomic studies of some often over-looked Diaporthomycetidae and Sordariomycetidae

Sordariomycetes is an earlier-introduced and one of the widely distributed class of Ascomycota.The class was initially clas-sified based on morphology in having inoperculate and unitunicate asci.With the development of DNA based phylogenetic analysis,several undetermined or polyphyletic members of Sordariomycetes were reclassified.However,not all species belonging to this class have been sequenced and analyzed.There are a number of species,especially those old and poorly studied ones which have never been sequenced before and not even recollected again for further taxonomic verification.One of the main objective in this study is to revise and update the taxonomy of several well-known early and poorly studied spe-cies whose classification are still obscure.Herein,we re-examined the type materials and/or authentic specimens together to explore 74 relatively poorly-studied genera,which mainly belong to Boliniales,Calosphaeriales,Chaetosphaeriales,Jobellisiales,and Sordariales classified under Diaporthomycetidae and Sordariomycetidae.We provide descriptions,notes,figures and/or drawings and discussed their phylogenetic relationships.As a result,the monotypic Jobellisiales is transferred from Hypocreomycetidae to Diaporthomycetidae.Based on phylogenetic analysis,the polyphyletic Lasiosphaeriaceae is divided into five families,Bombardiaceae(Apodospora,Bombardia,Bombardioidea,Fimetariella and Ramophialophora),Lasiosphaeriaceae(Anopodium,Bellojisia,Corylomyces,Lasiosphaeria,Mammaria and Zopfiella),Lasiosphaeridaceae(Lasiosphaeris),Strattoniaceae(Strattonia)and Zygospermellaceae(Episternus and Zygospermella).In addition,a new family Neoschizotheciaceae is established based on Neoschizothecium.Analysis of the type species of Boothiella,Stel-latospora,Sulcatistroma and Tengiomyces placed them in Sordariaceae,Chaetomiaceae,Hypocreales and Coronophorales,respectively.We classify the genera lacking molecular data based on their morphology and expect them to be recollected;that is,Kacosphaeria in Calosphaeriales;Arnium,Biconiosporella,Camptosphaeria,Diffractella,Emblemospora,Eosphaeria,Periamphispora,Synaptospora and Tripterosporella in Sordariales;Conidiotheca in Sordariomycetes;Copromyces,Effetia,Endophragmiella and Tulipispora are accommodated in Ascomycota.Besides,we establish a new genus Neoschizothecium based on phylogenetic analysis.New combinations proposed:Camaropella amorpha,Cam.microspora,Cam.plana,Clad-orrhinum grandiusculum,Cla.leucotrichum,Cla.terricola,Cla.olerum,Helminthosphaeria plumbea,Immersiella hirta,Jugulospora minor,Lasiosphaeris arenicola,Neoschizothecium aloides,Neo.carpinicola,Neo.conicum,Neo.curvisporum,Neo.fimbriatum,Neo.glutinans,Neo.inaequale,Neo.minicaudum,Neo.selenosporum,Neo.tetrasporum,Neurospora autosteira,Podospora brunnescens,P.flexuosa,P.jamaicensis,P.hamata,P.macrospora,P.spinosa,Strattonia petrogale and Triangularia microsclerotigena,T.nannopodalis,T.praecox,T.samala,T.tarvisina,T.unicaudata,T.yaeyamensis.New epithets are proposed for Apiorhynchostoma apiosporum and Podospora dacryoidea.

Refined families of Dothideomycetes:orders and families incertae sedis in Dothideomycetes

Numerous new taxa and classifications of Dothideomycetes have been published following the last monograph of families of Dothideomycetes in 2013.A recent publication by Honsanan et al.in 2020 expanded information of families in Dothideo-mycetidae and Pleosporomycetidae with modern classifications.In this paper,we provide a refined updated document on orders and families incertae sedis of Dothideomycetes.Each family is provided with an updated description,notes,including figures to represent the morphology,a list of accepted genera,and economic and ecological significances.We also provide phylogenetic trees for each order.In this study,31 orders which consist 50 families are assigned as orders incertae sedis in Dothideomycetes,and 41 families are treated as families incertae sedis due to lack of molecular or morphological evidence.The new order,Catinellales,and four new families,Catinellaceae,Morenoinaceae Neobuelliellaceae and Thyrinulaceae are introduced.Seven genera(Neobuelliella,Pseudomicrothyrium,Flagellostrigula,Swinscowia,Macroconstrictolumina,Pseudobogoriella,and Schummia)are introduced.Seven new species(Acrospermum urticae,Bogoriella complexoluminata,Dothiorella ostryae,Dyfrolomyces distoseptatus,Macroconstrictolumina megalateralis,Patellaria microspora,and Pseu-domicrothyrium thailandicum)are introduced base on morphology and phylogeny,together with two new records/reports and five new collections from different families.Ninety new combinations are also provided in this paper.

Fungal diversity notes 1–110:taxonomic and phylogenetic contributions to fungal species

This paper is a compilation of notes on 110 fungal taxa,including one new family,10 new genera,and 76 new species,representing a wide taxonomic and geographic range.The new family,Paradictyoarthriniaceae is introduced based on its distinct lineage in Dothideomycetes and its unique morphology.The family is sister to Biatriosporaceae and Roussoellaceae.The new genera are Allophaeosphaeria(Phaeosphaeriaceae),Amphibambusa(Amphisphaeriaceae),Brunneomycosphaerella(Capnodiales genera incertae cedis),Chaetocapnodium(Capnodiaceae),Flammeascoma(Anteagloniaceae),Multiseptospora(Pleosporales genera incertae cedis),Neogaeumannomyces(Magnaporthaceae),Palmiascoma(Bambusicolaceae),Paralecia(Squamarinaceae)and Sarimanas(Melanommataceae).The newly described species are the Ascomycota Aliquandostipite manochii,Allophaeosphaeria dactylidis,A.muriformia,Alternaria cesenica,Amphibambusa bambusicola,Amphisphaeria sorbi,Annulohypoxylon thailandicum,Atrotorquata spartii,Brunneomycosphaerella laburni,Byssosphaeria musae,Camarosporium aborescentis,C.aureum,C.frutexensis,Chaetocapnodium siamensis,Chaetothyrium agathis,Colletotrichum sedi,Conicomyces pseudotransvaalensis,Cytospora berberidis,C.sibiraeae,Diaporthe thunbergiicola,Diatrype palmicola,Dictyosporium aquaticum,D.meiosporum,D.thailandicum,Didymella cirsii,Dinemasporium nelloi,Flammeascoma bambusae,Kalmusia italica,K.spartii,Keissleriella sparticola,Lauriomyces synnematicus,Leptosphaeria ebuli,Lophiostoma pseudodictyosporium,L.ravennicum,Lophiotrema eburnoides,Montagnula graminicola,Multiseptospora thailandica,Myrothecium macrosporum,Natantispora unipolaris,Neogaeumannomyces bambusicola,Neosetophoma clematidis,N.italica,Oxydothis atypica,Palmiascoma gregariascomum,Paraconiothyrium nelloi,P.thysanolaenae,Paradictyoarthrinium tectonicola,Paralecia pratorum,Paraphaeosphaeria spartii,Pestalotiopsis digitalis,P.dracontomelon,P.italiana,Phaeoisaria pseudoclematidis,Phragmocapnias philippinensis,Pseudocamarosporium cotinae,Pseudocercospora tamarindi,Pseudotrichia rubriostiolata,P.thailandica,Psiloglonium multiseptatum,Saagaromyces mangrovei,Sarimanas pseudofluviatile,S.shirakamiense,Tothia spartii,Trichomerium siamensis,Wojnowicia dactylidicola,W.dactylidis and W.lonicerae.The Basidiomycota Agaricus flavicentrus,A.hanthanaensis,A.parvibicolor,A.sodalis,Cantharellus luteostipitatus,Lactarius atrobrunneus,L.politus,Phylloporia dependens and Russula cortinarioides are also introduced.Epitypifications or reference specimens are designated for Hapalocystis berkeleyi,Meliola tamarindi,Pallidocercospora acaciigena,Phaeosphaeria musae,Plenodomus agnitus,Psiloglonium colihuae,P.sasicola and Zasmidium musae while notes and/or new sequence data are provided for Annulohypoxylon leptascum,A.nitens,A.stygium,Biscogniauxia marginata,Fasciatispora nypae,Hypoxylon fendleri,H.monticulosum,Leptosphaeria doliolum,Microsphaeropsis olivacea,Neomicrothyrium,Paraleptosphaeria nitschkei,Phoma medicaginis and Saccotheciaceae.A full description of each species is provided with light micrographs(or drawings).Molecular data is provided for 90 taxa and used to generate phylogenetic trees to establish a natural classification for species.

Meliolales

The order Meliolales comprises the families Armatellaceae and Meliolaceae.These are black mildews that grow on the surface of host plants,often regarded as minor plant pathogens.In this study,types or specimens of 17 genera of Armatellaceae and Meliolaceae were borrowed from herbaria and re-examined.Armatella is accepted in Armatellaceae and Amazonia,Appendiculella,Asteridiella,Cryptomeliola,Endomeliola,Irenopsis and Meliola are accepted in the family Meliolaceae.Laeviomeliola is synonymized under Meliola.Ceratospermopsis,Ectendomeliola,Haraea,Hypasteridium,Leptascospora,Metasteridium,Ophiociliomyces,Ophioirenina,Ophiomeliola,Parasteridium,Pauahia,Pleomeliola,Pleomerium,Prataprajella,Ticomyces,Urupe and Xenostigme are excluded from Meliolaceae,and are treated as doubtful genera or placed in ascomycetes genera incertae sedis.The type species of each genus is re-described and illustrated with photomicrographs.Notes are provided and comparisons made.Two new species of Meliola and one new species of Irenopsis are also introduced with molecular data and we provide the most populated phylogenetic tree of Meliolomycetidae to date.Meliola thailandicum was found on Dimocarpus longan(Sapindales)and Acacia auriculiformis(Fabales)and confirmed to be the same species in the molecular analyses.This has important implications as the several hundred Meliola species are recognized based on host associations.Thus the same species being recorded from two unrelated hosts sheds doubt on Meliola species being host-specific.