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A serious rust disease was found in Gansu Province, China. The disease incidence is approximately 80-90%. We also found rust disease on both and in the same location. Two novel species were identified from the infected plants. Based on morphological observations and phylogenetic analyses, we describe the two new taxa as and . We also determined their life cycles. Moreover, this study documented a novel aeciospore surface structure with two different surface types on one aeciospore. We describe it here as "granular."
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http://dx.doi.org/10.1080/00275514.2022.2094116 | DOI Listing |
Plant Genome
September 2025
Agriculture Victoria, Centre for AgriBioscience, AgriBio, Bundoora, Victoria, Australia.
Global wheat (Triticum aestivum L.) production faces significant challenges due to the destructive nature of leaf (Puccinia triticina; leaf rust [Lr]), stem (Puccinia graminis; stem rust [Sr]), and stripe (Puccinia striiformis; stripe rust [Yr]) rust diseases. Despite ongoing efforts to develop resistant varieties, these diseases remain a persistent challenge due to their highly evolving nature.
View Article and Find Full Text PDFMycoKeys
August 2025
Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana, USA Purdue University West Lafayette United States of America.
Rust fungi (Pucciniales) comprise a large group of ecologically and economically important plant pathogens distributed globally where their hosts grow. The first published study of rusts in Indiana was carried out 131 years ago, and a revised checklist of all Pucciniales for Indiana has not been compiled since the works of Jackson from 1917 to 1920. Efforts to compile a checklist five years ago revealed a dire need for revision due to taxonomic and nomenclatural changes.
View Article and Find Full Text PDFFungal Biol
October 2025
Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS) - CONICET, Camino La Carrindanga Km 7, Bahía Blanca, 8000, Argentina.
Tritrophic interactions involving host plants, fungal pathogens and mycoparasites play an important role in the dynamics of natural ecosystems. In this work, we investigate the impact of the rust fungus Puccinia araujiae on the growth of Araujia hortorum plants in the presence/absence of a mycoparasitic Cladosporium species identified here as Cladosporium sphaerospermum, supported by both morphological and molecular studies. The capacity of the latter to grow and reproduce at the expense of teliospores of the rust was confirmed through microscopic observations.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
Beijing Life Science Academy, Beijing, 102206, China.
In-field molecular diagnostics of plant pathogens are critical for crop disease management and precision agriculture, but tools are still lacking. Herein, we present a bioluminescent molecular diagnostic assay capable of detecting viable pathogens directly in minimally processed plant samples, enabling rapid and precise in-field crop disease diagnosis. The assay, called bioluminescent craspase diagnostics (BioCrastics), leverages newly discovered RNA-activated protease of CRISPR (Craspase) with enzymatic luminescence to generate a cascaded amplification, thus bypasses nucleic acid purification and amplification while achieving sub-nanogram sensitivity for fungal pathogens.
View Article and Find Full Text PDFPlant Environ Interact
October 2025
Discipline of Plant Pathology, College of Agriculture, Engineering & Science; School of Agricultural, Earth and Environmental Sciences University of KwaZulu-Natal Pietermaritzburg Republic of South Africa.
Asian soybean rust (ASR) is caused by the biotrophic fungus Syd. & P. Syd.
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