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Minutes of the meetings of WG III
1985 - IRG/WP 3355
IRG Secretariat


Minutes of the meetings of WG III
1980 - IRG/WP 3161
IRG Secretariat


Minutes of the meetings of WG III
1977 - IRG/WP 3103
IRG Secretariat


Physical properties of ß-1,4-Xylanase produced by Postia (=Poria) placenta: Implications for the control of brown rot
1987 - IRG/WP 1318
The degradation of hemicelluloses is an early event in wood decay by brown-rot fungi. An understanding of the physical properties of hemicellulases may suggest target mechanisms for the development of new control agents. Endo-b-1,4-xylanase was partially purified by column chromatography from wood decayed by Postia (= Poria) placenta. The enzyme was extremely resistant to denaturing conditions; no loss of activity was detected after 2 h in 9 M urea or 6 M guanidine-HCl. Boiling the enzyme for 5 min in 2.5% SDS + 0.5% b-mercaptoethanol reduced its activity by 65%, as measured by the production of reducing sugars. The activity of a-D-galactosidase, another enzyme detected in large quantities in the decayed wood, was reduced by 98% under these conditions. Optimum pH and temperature ranges were pH 2-6 and 50-60°C, respectively. The enzyme appears to be a glycoprotein containing 50-60% carbohydrate (w/w); the carbohydrate moiety may protect the enzyme from adverse environmental conditions. The control of brown rot by in situ inactivation of xylanase may not be feasible because of the enzyme's extreme stability.
J A Micales, F Green III, C A Clausen, T L Highley


Agenda WG III
1972 - IRG/WP 306
IRG Secretariat


Agenda WG III
1985 - IRG/WP 3350
IRG Secretariat


Minutes of the meetings of WG III
1981 - IRG/WP 3181
IRG Secretariat


Agenda WG III
1990 - IRG/WP 3621
IRG Secretariat


Agenda WG III
1989 - IRG/WP 3549
IRG Secretariat


Trials on the field control of the Formosan subterranean termite with Amdro® bait
1982 - IRG/WP 1163
Amdro® - treated paper towels were introduced into two field colonies of the Formosan subterranean termite in Hawaii. At the concentration of 180 ppm, the toxicant bait was ineffective one month after the introduction. At higher concentrations (> 6,400 ppm), the baits were eaten initially; however, one week after introduction, termites avoided or covered the baits. The 15,000 ppm baits supressed the activity of one colony but did not affect the other.
N-Y Su, M Tamashiro, J R Yates III


Report of Section 1 2003
2003 - IRG/WP 03-10502
F Green III


Agenda WG III
1987 - IRG/WP 3457
IRG Secretariat


Agenda WG III
1988 - IRG/WP 3491
IRG Secretariat


Minutes of the meetings of WG III
1986 - IRG/WP 3397
IRG Secretariat


Minutes of the meetings of WG III
1989 - IRG/WP 3558
IRG Secretariat


Agenda WG III
1976 - IRG/WP 362
IRG Secretariat


Minutes of the Meeting of WG III 1971
1971 - IRG/WP 301
IRG Secretariat


Minutes of the meetings of WG III
1983 - IRG/WP 3267
IRG Secretariat


Agenda WG III
1991 - IRG/WP 3674
IRG Secretariat


Minutes of the Meeting of WG III 1969
1969 - IRG/WP III 2
IRG Secretariat


Agenda WG III
1984 - IRG/WP 3314
IRG Secretariat


Agenda WG III
1986 - IRG/WP 3394
IRG Secretariat


Minutes of the Meeting of WG III 1975
1975 - IRG/WP 353
IRG Secretariat


Agenda WG III
1978 - IRG/WP 3119
IRG Secretariat


Agenda WG III
1974 - IRG/WP 327
IRG Secretariat


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