KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Author: search.filters.author.Kanokmedhakul, S.Subject: search.filters.subject.Chaetomium elatum

Search Results

Now showing 1 - 3 of 3
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Evaluation of bio-formulation from Chaetomium elatum ChE01 to control banana anthracnose caused by Colletotrichum musae
    (2019-01-01)
    Soytong, K.
    ;
    Suthammarit, S.
    ;
    Kanokmedhakul, S.
    Anthracnose of banana is proved to cause by Colletotrichum musae. Chaetomium elatum ChE01 inhibited the growth of C. musae within 30 days in bi-culture plates over 60 % and inhibited the spore production of C. musae of 57 %. The metabolites from C. elatum ChE01 actively fungal activity against C. musae for spore inhibition which crude methanol, crude ethyl acetate and crude hexane extracts at the ED<inf>50</inf> value was 5.43, 7.43 and 19.62 ppm., respectively. The new bio-formulation of C. elatum ChE01 reduced disease incidence of banana anthracnose of 13.34 % compared to benomyl that reduced the disease incidence of 13.05 %. Moreover, the crude extract mixture of C. elatum ChE01 and spore suspension of C. elatum ChE01 reduced the anthracnose incidence of 2.13 and 2.04 %, respectively. The research finding is reported for the first time that bioformulations of C. elatum ChE01 could control banana anthracnose caused by C. musae.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Nano-particles derived from Chaetomium elatum against Phytophthora rot of durian
    (2018-12-01)
    Thongkham, D.
    ;
    Soytong, K.
    ;
    Kanokmedhakul, S.
    ;
    Kanokmedhakul, K.
    Durian are the economically fruit trees in Thailand. The important problem of durian is root rot disease caused by Phytophthora palmivora. This study was used Chaetomium elatum to control the P. palmivora causing root rot disease of durian by dual culture method, crude extract test and nano particles test derived from Ch. elatum. Dual-culture test showed that Ch. elatum gave efficiency to inhibit of spore and colony growth of P. palmivora which were 46.13 and 38.89%, respectively. Testing efficacy of crude extract from Ch. elatum to control P. palmivora found that crude ethyl acetate from Ch. elatum gave significantly highest against pathogen of P. palmivora at the concentration of 1000 ppm which the ED <inf>50</inf> of 175.31 ppm. Nano particles testing, nano particles of crude hexane, ethyl acetate and methanol from Ch. elatum showed the ED <inf>50</inf> values of 3.49, 3.47 and 3.41 ppm.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Antifungal metabolites from antagonistic fungi used to control tomato wilt fungus Fusarium oxysporum f. sp. lycopersici
    (2011-12-28)
    Sibounnavong, P.
    ;
    Charoenporn, C.
    ;
    Kanokmedhakul, S.
    ;
    Soytong, K.
    Chaetomium elatum strain ChE01, Chaetomium lucknowense strain CLT01 and Emericella rugulosa strain ER01, which were isolated from soil in Thailand, effectively controlled the most virulent isolate of Fusarium oxysporum f. sp. lycopersici NKSC02 causing wilt of tomato (Lycopersicon esculentum var Sida). Two antifungal substances were purified: Chaetoglobosin-C from Ch. elatum and Ch. lucknowense and tajixanthone from E. rugulosa. Chaetoglobosin-C showed greater antifungal activity against F. oxysporum f. sp. lycopersici, with an effective dose (ED <inf>50</inf>) of 5.98 μg/ml, compared with tajixanthone (ED <inf>50</inf> of 167 μg/ml). These results suggest that the disease control mechanism of these antagonistic fungi involves antibiosis. The inoculating tomato seedlings var. Sida with conidia of F. oxysporum f.sp. lycopersici, mixed with either a solution of chaetoglobosin-C or tajixanthone showed no wilt symptom. The conidia of F. oxysporum f. sp. lycopersici treated with these two compounds appeared abnormal and lost pathogenicity. © 2011 Academic Journals.