{"title":"Detection of guava root-knot nematode, Meloidogyne enterolobii infecting Psidium guajava orchards in Homestead, Florida","authors":"Denis Gitonga, Phougeishangbam Rolish Singh, Abolfazl Hajihassani","doi":"10.1007/s13314-023-00506-1","DOIUrl":"10.1007/s13314-023-00506-1","url":null,"abstract":"<div><p>Guava is a nutritious and profitable high-yield crop. Guava root-knot nematode (GRKN), <i>M. enterolobii</i> Yang & Eisenback, 1983 (= <i>M. mayaguensis</i> Rammah & Hirschmann, 1988), cause detrimental damage in guava orchards in more than 15 countries. Fifteen guava orchards in Homestead, Florida, were randomly sampled to check for potential plant-parasitic nematode damage to the trees. The guava RKN, <i>M. enterolobii</i>, was detected in 80% of the sampled orchards, causing damage to white and pink guava. Morphological and molecular analyses confirmed the identification of nematode species, and the host pathogenicity test showed the guava’s susceptibility to <i>M. enetrolobii</i>.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43960216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emmanuel Olajide, Yao A. Kolombia, Delphine Amah, Josephine U. Agogbua, Danny Coyne, Rony Swennen, Laura Cortada, Wim Bert
{"title":"A report of Meloidogyne arenaria Parasitizing Plantain (Musa spp., AAB) in Nigeria","authors":"Emmanuel Olajide, Yao A. Kolombia, Delphine Amah, Josephine U. Agogbua, Danny Coyne, Rony Swennen, Laura Cortada, Wim Bert","doi":"10.1007/s13314-023-00505-2","DOIUrl":"10.1007/s13314-023-00505-2","url":null,"abstract":"<div><p>Extensive root galling observed on plantain (<i>Musa</i> spp., AAB) in Nigeria was analysed using Nad5 mitochondrial DNA sequences and the causal agent identified as <i>Meloidogyne arenaria</i>. Following the inoculation of population cultured, Koch’s postulates was fulfilled and the same symptoms observed. This provides the first molecular confirmation of <i>M. arenaria</i> causing such damage to plantain and highlighting its potential as a threat to the crop. Root knot nematodes are known to affect banana and plantain production but diagnosis of the species involved is only just being accurately determined with the recent improvements in molecular techniques.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46611362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniel C. Huston, Mike Hodda, Andrea Hills, Sarah Collins
{"title":"Detection of heterodera mani in Western Australia","authors":"Daniel C. Huston, Mike Hodda, Andrea Hills, Sarah Collins","doi":"10.1007/s13314-023-00503-4","DOIUrl":"10.1007/s13314-023-00503-4","url":null,"abstract":"<div><p>The ryegrass cyst nematode, <i>Heterodera mani</i>, is reported from Western Australia for the first time. Cysts were recovered from soil samples collected on a broadacre cropping property near the town of Esperance. The production area is dominated by cereal/oilseed rotation and a species of annual ryegrass (<i>Lolium rigidum</i>) is a common weed issue in these paddocks. Morphometrics of cysts and second stage juveniles (J2s) from the Western Australian population were consistent with data from other reports of this species. Sequences of the mitochondrial cytochrome c oxidase I (COI) gene region were generated and matched those of <i>H</i>. <i>mani</i> from previous reports. Sequences of the large subunit ribosomal RNA (28S rRNA) were produced for <i>H</i>. <i>mani</i> for the first time. Although interspecific variation is relatively low for this gene in the <i>Heterodera avenae</i> species complex, our analyses indicate that 28S gene sequences sufficiently differentiate <i>H</i>. <i>mani</i> from other <i>H</i>. <i>avenae</i>-group members. <i>Lolium rigidum</i> is likely the host for the <i>H</i>. <i>mani</i> population discovered, although this requires further confirmation.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13314-023-00503-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44583216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. A. Benso, L. P. Pieroni, Y. D. Mira, A. Marques, V. Ciriello, B. C. Rossini, C. L. Marino, E. L. Furtado
{"title":"First report of Colletotrichum nymphaeae causing leaf spot in Khaya spp.","authors":"L. A. Benso, L. P. Pieroni, Y. D. Mira, A. Marques, V. Ciriello, B. C. Rossini, C. L. Marino, E. L. Furtado","doi":"10.1007/s13314-023-00502-5","DOIUrl":"10.1007/s13314-023-00502-5","url":null,"abstract":"<div><p>In a forest nursery located in Brazil, seedlings of <i>Khaya</i> spp. were observed showing leaf spot symptoms. From these symptoms, the phytopathogen <i>Colletotrichum nymphaeae</i> were isolated and characterized based on morphological, molecular and pathogenicity characteristics. To the best of our knowledge, this is the first report of <i>C. nymphaeae</i> infecting <i>Khaya</i> spp. in the world.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50057053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bahoya JA Lauryn, Ekwa Y Monono, Jean CM Piau, Boniface D Kashina, Vincent N Fondong, Walter N Leke
{"title":"Detection and molecular characterization of a new bipartite begomovirus infecting asystasia (Asystasia gangetica) in Benin Republic in West Africa","authors":"Bahoya JA Lauryn, Ekwa Y Monono, Jean CM Piau, Boniface D Kashina, Vincent N Fondong, Walter N Leke","doi":"10.1007/s13314-023-00501-6","DOIUrl":"10.1007/s13314-023-00501-6","url":null,"abstract":"<div><p><i>Asystasia gangetica</i> (<i>A. gangetica</i>) leaves exhibiting yellow mosaic symptoms were tested for the presence of begomovirus infection. The putative full-length of a bipartite begomovirus components A and B molecules, respectively were amplified, sequenced, and analyzed. This represents a distinct begomovirus species infecting Asystasia in Benin Republic in West Africa.\u0000</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49498351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"First report of Tomato yellow leaf curl virus and associated Tomato leaf curl betasatellite infecting eggplant (Solanum melongena) and in Pakistan","authors":"Nasim Ahmed, Imran Amin, Shahid Mansoor","doi":"10.1007/s13314-023-00499-x","DOIUrl":"10.1007/s13314-023-00499-x","url":null,"abstract":"<div><p>Tomato yellow leaf curl virus (TYLCV) is the most devastating and globally spreading begomovirus (family <i>Geminiviridae</i>). Interestingly, until recently, it has not been reported from South Asia. In the current study, for the first time, we identified a novel strain of TYLCV and associated betasatellite infecting eggplant in Pakistan.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48708203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leonardo Araujo, Felipe Augusto Moretti Ferreira Pinto, Camila Cristina Lage de Andrade, Tatiana Mituti, Bianca Ramos Falkenbach, Larissa Bitencourt Gomes, Valmir Duarte
{"title":"Pestalotiopsis trachycarpicola causes leaf spot disease on blueberry in Santa Catarina, Brazil","authors":"Leonardo Araujo, Felipe Augusto Moretti Ferreira Pinto, Camila Cristina Lage de Andrade, Tatiana Mituti, Bianca Ramos Falkenbach, Larissa Bitencourt Gomes, Valmir Duarte","doi":"10.1007/s13314-023-00500-7","DOIUrl":"10.1007/s13314-023-00500-7","url":null,"abstract":"<div><p>In Brazil, one blueberry plant of the cultivar Climax showing symptoms and signs of <i>Pestalotiopsis</i> spp. was observed in a commercial orchard. Morphological and molecular observations were consistent with those previously reported for <i>Pestalotiopsis trachycarpicola</i> (ex-type <i>Pestalotiopsis trachycarpicola</i>). Koch’s postulates were fulfilled. To the best of our knowledge, this is the first report of <i>P. trachycarpicola</i> (ex-type <i>P. trachycarpicola</i>) causing leaf spot of blueberry in Brazil.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48067676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Niayesh Shahmohammadi, Akbar Dizadji, Muhannad Al-Waeli, Anders Kvarnheden
{"title":"First report of cotton leaf curl Gezira virus infecting Malva parviflora and in Iraq","authors":"Niayesh Shahmohammadi, Akbar Dizadji, Muhannad Al-Waeli, Anders Kvarnheden","doi":"10.1007/s13314-023-00498-y","DOIUrl":"10.1007/s13314-023-00498-y","url":null,"abstract":"<div><p>In the current study, the complete genome of an isolate of cotton leaf curl Gezira virus (CLCuGeV), identified for the first time from <i>Malva parviflora</i> in Iraq, was amplified using rolling circle amplification and sequenced. The Iraqi isolate of CLCuGeV shared highest nucleotide identity at 98.2% with an Israeli isolate and clustered with isolates of the Egyptian and Cameroon strains in phylogenetic analysis.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48335865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Matiyar Rahaman Khan, Sandip Mondal, Amit Singh, Sabyasachi Pal
{"title":"First report of rice root-knot nematode (Meloidogyne graminicola) infecting wild jute (Corchorus aestuans)","authors":"Matiyar Rahaman Khan, Sandip Mondal, Amit Singh, Sabyasachi Pal","doi":"10.1007/s13314-023-00497-z","DOIUrl":"10.1007/s13314-023-00497-z","url":null,"abstract":"<div><p>A wild species of jute, <i>Corchorus aestuans</i> (family: Tiliaceae), was found to be infected root-knot nematode, <i>Meloidogyne graminicola</i>. The pathogenicity of <i>M. graminicola</i> on <i>C. aestuans</i> (local cultivar) under pot conditions showed that <i>M. graminicola</i> could infect, reproduce, and incite profuse root galling in <i>C. aestuans</i>. The initial inoculum of 10-second stage juveniles per 1000 cm3 of soil displayed the highest reproduction factor (P<sub>f</sub>/P<sub>i</sub>, RF = 145). Our findings demonstrated <i>C. aestuans</i> as a good host of <i>M. graminicola</i>, and its infection on roots exhibits typical terminal root gall with a distinct egg mass visible from the outside. To our knowledge, this is the first report of <i>C. aestuans</i> as a host of <i>M. graminicola</i> from West Bengal, India.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48069938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marissônia de A. Noronha, Mayara C. Assunção, Maria de Fatima S. Muniz, Andressa C. Z. Machado
{"title":"Aphelenchoides besseyi causing leaf spot on cowpea under field conditions in Brazil","authors":"Marissônia de A. Noronha, Mayara C. Assunção, Maria de Fatima S. Muniz, Andressa C. Z. Machado","doi":"10.1007/s13314-023-00496-0","DOIUrl":"10.1007/s13314-023-00496-0","url":null,"abstract":"<div><p><i>Aphelenchoides besseyi</i> was detected as the causal agent of foliar dark spots on cowpea plants growing in the field, and its pathogenicity was confirmed. The identity of the nematode was determined through morphological, morphometric, and molecular characterization, using species-specific primers Abess_11F/Abess_11R targeting 28S rDNA, which amplified a fragment of 570 bp. This is the first report of <i>A. besseyi</i> parasitizing cowpea under field conditions in Brazil.</p></div>","PeriodicalId":45862,"journal":{"name":"Australasian Plant Disease Notes","volume":"18 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47545264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}