Publications by authors named "N Keyhani"

The Cordycipitaceae family of insecticidal fungi is widely distributed in nature, is the most complex in the order Hypocreales (Ascomycota), with members displaying a diversity of morphological characteristics and insect host ranges. Based on Bayesian evolutionary analysis of five genomic loci(the small subunit of ribosomal RNA (SSU) gene, the large subunit of ribosomal RNA (LSU) gene, the translation elongation factor 1-α () gene, the largest subunit of RNA polymerase II (), and the second largest subunit of RNA polymerase II (), we inferred the divergence times for members of the Cordycipitaceae, improving the internal phylogeny of this fungal family. Molecular clock analyses indicate that the ancestor of occurred in the Paleogene period (34.

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Fungal biota represents important constituents of phyllosphere microorganisms. It is taxonomically highly diverse and influences plant physiology, metabolism and health. Members of the order are distributed worldwide and include devastating plant pathogens as well as endophytes and saprophytes.

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Fungi have evolved diverse physiological adaptations to hypoxic environments. However, the mechanisms mediating such adaptations remain obscure for many filamentous pathogenic fungi. Here, we show that autophagy mediated mitophagy occurs in the insect pathogenic fungus Beauveria bassiana under hypoxic conditions induced by host cellular immune responses.

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Article Synopsis
  • Agricultural ecosystems are shaped by complex interactions and communication among microbes, plants, and insects, primarily through chemical signals.
  • Current research focuses on both direct interactions (like plant-microbe and insect-plant) and the concurrent multitrophic relationships among all three groups, facilitated by new technologies like AI and metabarcoding.
  • The review highlights advances in understanding chemical communication in these ecosystems, suggesting potential applications for improving food safety and security in agricultural practices.
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Characterization of fungal spider pathogens lags far behind their insect counterparts. In addition, little to nothing is known concerning the ecological reservoir and/or fungal entomopathogen community surrounding infection sites. Five infected spider cadavers were identified in the neo-tropical climate of north-central Florida, USA, from three of which viable cultures were obtained.

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