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Podostroma cornu-damae is considered one of the most poisonous mushrooms in the world. The first report of P. cornudamae in Indonesia was provided by Boedijn in 1934, located at Buitenzorg (Bogor), West Java. Our preliminary work based only on the macroscopic features in 2020 indicated the occurrence of Podostroma cf. cornu-damae in Central Kalimantan (Borneo). Hence, the current research aims to ensure the taxonomical identity of the macrofungi. Podostroma cornu-damae is confirmed based on morphological (macro-and microscopic) and molecular evidence. A brief description of the morphology of P. cornu-damae and the phylogenetic analyses inferred from the ITS sequence are provided. This study is the first comprehensive report of P. cornu-damae for Indonesia after nearly 100 years of hiatus. [ABSTRACT FROM AUTHOR]

The incomplete information on most reported macrofungi is one of the remaining challenges of taxonomic work in Indonesia. Cookeina tricholoma (Ascomycetes, Pezizales, Sarcoscyphaceae), otherwise known as cup fungi, is no exception. In this study, we report C. tricholoma from West Java, Indonesia. Fresh materials were evaluated using morphological and molecular analyses. The specimen was illustrated with macro- and microscopic features. Molecular analyses were performed using the internal transcribed spacer region. Cookeina voucher BO24423 was identified as C. tricholoma. The morphological characteristics of C. tricholoma BO24423 are cup-shaped, pinkish to reddish, and with prominent hairs. The phylogenetic tree analyses confirmed that our specimens were C. tricholoma with 99-100% bootstrap value. This study is the first contribution to the identification of C. tricholoma based on morphological and molecular evidence for Indonesia. [ABSTRACT FROM AUTHOR]

A total of 201 isolates of Pyricularia oryzae (the causal agent of rice blast) were collected from three rice ecosystems (upland, lowland, and swampy) in five regions of Indonesia (West Java, Lampung, South Sumatra, Kalimantan, and Bali). Their pathogenicities were characterized based on the patterns of reaction of 25 differential varieties (DVs) and the susceptible control Lijiangxintuanheigu (LTH), which was susceptible to all blast isolates. A high proportion of isolates (>80.0%) were virulent to DVs for resistance genes Pib , Pit , Pia , Pik-s , and Pi12 (t), and a low proportion of isolates (<12.9%) were virulent to DVs for Pik-m , Pi1 , Pik-h , Pik , Pik-p , and Pi7 (t). Virulence to the other DVs for Pish , Pii , Pi3 , Pi5 (t), Pi9 (t), Piz , Piz-5 , Piz-t , Pita-2 (two lines), Pita (two lines), Pi19 (t), and Pi20 (t) showed intermediate frequencies from 20.0 to 80.0%. These isolates were classified into three cluster groups, Ia, Ib, and II, and the frequencies of cluster groups varied between the three ecosystems and the five regions. The frequencies of cluster groups varied between ecosystems and regions, and races varied according to the ecosystems. A total of 27 standard differential blast isolates (SDBIs) were selected from the 201 isolates collected. The set of 25 DVs and these 27 SDBIs will be used as a new differential system for analysis of the pathogenicity of blast isolates and analysis of resistance genes in rice cultivars, which will contribute to building a durable protection system against blast disease in Indonesia.