Entomopathogenic characterization of Beauveria bassiana fungi against Tetranychus kanzawai (Kishida) (Tetranychidae: Acarina) spider mite by its region

Issue Date

1-2014

Abstract

The characteristics of six Beauveria bassiana isolates against Tetranychus kanzawai were investigated. The investigated aspects were B. bassiana isolates': (1) pathogenicity to T. kanzawai, (2) cellular characteristics, (3) infection process (4) phylogeny. The isolates were planted onto potato dextrose agar (PDA) in flat bottle flasks and incubated at certain room condition, i.e. 26±1°C temperature and 12-hour photoperiod, for a maximum of 21 days. The results showed that isolates' phatogenicity level decreased in the following order: Bb6>Bb5>Bb4>Bb3>Bb1>Bb2. The surface of Bb4 and Bb5 isolates were yellowish-white, while Bb6 had a white color. The bottom of Bb4 had brown and white colors while both Bb5 and Bb6, on the other hand, had yellow color. All isolates had round shapes. Bb6 had the fastest sporulation growth of 3 days post inoculation while others grew approximately at 4 days post inoculation. The ITS region examination showed that three B. bassiana isolates were related, in which Bb4 and Bb5 (from Indonesia) were closely related and Bb6 (from Philippines) was distantly related.

Source or Periodical Title

Thai Journal of Agricultural Science

ISSN

0049-3589

Volume

47

Issue

1

Page

13-21

Document Type

Article

Language

English

Subject

Beauveria bassiana, Cellular, Green house, Infection, Phylogeni characteristics of T. Kanzawai., Selection

Digital Copy

yes

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