Pathogenic and Non-pathogenic Microorganisms and Insects

Pegg, G. F.

doi:10.1007/978-3-642-67734-2_17

Cited by 5 publications

(1 citation statement)

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“…2). As well as harmful mycotoxins, members of both Aspergillus and Penicillium genera are known to produce various plant hormones (Pegg 1984, Tuomi et al 1994, 1995. Aspergillus spp.…”

Section: Fungal Spectramentioning

confidence: 99%

Annual variations in the microflora of some varieties of Finnish malting barley

Tuomi¹,

Rosenqvist

1995

AFSci

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Three major Finnish malting barley varieties were studied for annual variations in the incidence of seed-derived fungi, bacteria and actinomycetes. In 1990-1992, 114 characterized fungal, 59 uncharacterized bacterial and 12 uncharacterized actinomycetal isolates were extracted from samples of seed intended for use in malting. When the yield of the plant hormone, indole-3-acetic acid (lAA), from enriched microbial cultures was weighed against the microbial biomass and the endogenous lAA concentration of the barley harvests, it was concluded that potential exists for bacterial lAA production in biologically significant amounts, given some minor annual variations. As expected from the average rainfall and temperature during the growing season, microbial counts in all cultivars were highest in 1992. Most of the fungal species found were of saphrophytic character, and field fungi were dominant in the samples. On the whole, microbial counts and spectra in all samples confirmed that each harvest of all cultivars was of good vigour and well suited for malting purposes. Strains of plant pathogenic character included species of Septoria nodorum (Berk) Berk, Drechlera teres (Sacc) Subraim & Jain, D. sorokiniana (Sacc) Subram & Jain and D. graminea (Rab.) Shoem. A consistent difference was noted in the microbial infection severities of the cultivars.

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“…2). As well as harmful mycotoxins, members of both Aspergillus and Penicillium genera are known to produce various plant hormones (Pegg 1984, Tuomi et al 1994, 1995. Aspergillus spp.…”

Section: Fungal Spectramentioning

confidence: 99%