First Report of Leaf Spots on <i>Photinia serrulata</i> Caused by <i>Nigrospora oryzae</i> in China

He, Bo; Cernava, Tomislav; Huang, He; Li, H.-X.; Chen, X.-Y.-L.; Yang, Hyo-Seon

doi:10.1094/pdis-03-19-0431-pdn

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…This group of fungi can infect a wide range of plants, thereby causing great economic losses in crop production [2,3,[5][6][7][8][9]. Nigrospora species are known to infect Dioscorea opposita [10], Oryza satiwa [11], Chrysanthemum moratorium [3], Passiflora edulis Sims [12,13], Arachis hypogaea [14], Nicotiana tabacum [15], and Photinia serrulata [16] in China and lead to leaf spot or blight symptoms. They seem to have a broad host range.…”

Section: Introductionmentioning

confidence: 99%

Identification and Characterization of Nigrospora Species and a Novel Species, Nigrospora anhuiensis, Causing Black Leaf Spot on Rice and Wild Rice in the Anhui Province of China

Liu,

An,

Safdar

et al. 2024

JoF

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Rice production in the Anhui province is threatened by fungal diseases. We obtained twenty-five fungal isolates from rice and wild rice leaves showing leaf spot disease collected along the Yangtze River. A phylogenetic analysis based on internal transcribed spacer (ITS), translation elongation factor 1 alpha (TEF1-α), and beta tubulin (TUB2) sequences revealed one isolate (SS-2-JB-1B) grouped with Nigrospora sphaerica, one (QY) with Nigrospora chinensis, twenty-two with Nigrospora oryzae, and one isolate (QY-2) grouped in its own clade, which are related to but clearly different from N. oryzae. Nineteen tested isolates, including sixteen strains from the N. oryzae clade and the three isolates of the other three clades, caused disease on detached rice leaves. The three isolates that did not belong to N. oryzae were also able to cause disease in rice seedlings, suggesting that they were rice pathogens. Isolate QY-2 differed from the other isolates in terms of colony morphology, cell size, and susceptibility to fungicides, indicating that this isolate represents a new species that we named Nigrospora anhuiensis. Our analysis showed that N. sphaerica, N. chinensis, and the new species, N. anhuiensis, can cause rice leaf spot disease in the field. This research provides new knowledge for understanding rice leaf spot disease.

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Section: Introductionmentioning

confidence: 99%

Identification and Characterization of Nigrospora Species and a Novel Species, Nigrospora anhuiensis, Causing Black Leaf Spot on Rice and Wild Rice in the Anhui Province of China

Liu,

An,

Safdar

et al. 2024

JoF

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First Report of Nigrospora Species Causing Leaf Spot on Olive (Olea europaea L.)

Petrović,

Vrandečić,

Ćosić

et al. 2023

Horticulturae

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Leaf spot symptoms were spotted in two olive orchards in Istria and in Kvarner Gulf, Croatia. Fungal species from three representative isolates (P13 LECIII, R18 BI, JA20 NP) have been morphologically characterized based on the colony and conidial characteristics. Several techniques were performed for inducing the sporulation of the JA20 NP isolate. Only PDA + banana medium was successful. PCR was conducted for ITS, TUB, and EF1α gene regions. Phylogenetic analyses were performed using internal transcribed spacer, beta-tubulin, and translation elongation factor 1-alpha sequence data. Three types of tests were conducted: a pathogenicity test on detached leaves, on detached and scratched leaves, and on olive seedlings. Ultimately, from the morphological characterizations, DNA sequence analysis of ITS, TUB, and EF1α gene regions, and phylogenetic analysis, these species were identified as Nigrospora gorlenkoana Novobr., Nigrospora osmanthi Mei Wang & L. Cai, and Nigrospora philosophiae-doctoris M. Raza, Qian Chen & L. Cai. This is the first report of Nigrospora species causing leaf spot on olive trees and the first report of Nigrospora philosophiae-doctoris as a plant pathogen. Fungal leaf diseases in conditions that are favorable for infection and disease development can lead to a decrease in the yield and olive oil quality. Therefore, it is necessary to conduct further research and the monitoring of fungal leaf diseases.

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First Report of Leaf Spots on Photinia serrulata Caused by Nigrospora oryzae in China

Cited by 2 publications

References 2 publications

Identification and Characterization of Nigrospora Species and a Novel Species, Nigrospora anhuiensis, Causing Black Leaf Spot on Rice and Wild Rice in the Anhui Province of China

Identification and Characterization of Nigrospora Species and a Novel Species, Nigrospora anhuiensis, Causing Black Leaf Spot on Rice and Wild Rice in the Anhui Province of China

First Report of Nigrospora Species Causing Leaf Spot on Olive (Olea europaea L.)

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