Main conclusion Loss of CALS7 appears to confer increased susceptibility to phytoplasma infection in Arabidopsis, altering expression of genes involved in sugar metabolism and membrane transport . Abstract Callose deposition around sieve pores, under control of callose synthase 7 ( CALS7 ), has been interpreted as a mechanical response to limit pathogen spread in phytoplasma-infected plants. Wild-type and Atcals7ko mutants wer...

During a survey of insect gut micro‐organisms, we consistently isolated Pichia stipitis ‐like yeasts (Fungi: Ascomycota, Saccharomycetes) from the wood‐ingesting beetles, Odontotaenius disjunctus and Verres sternbergianus (Coleoptera: Passalidae). The yeasts were isolated from passalid beetles over a wide area, including the eastern and midwestern USA and Panama. Phylogenetic analyses of the nuclear encoded small and large sub...