Activity of Crude Extracts from Mangrove Derived Endophytes against Fungi Contaminating on Paddy

Authors

  • Jenjira Marom ภาควิชาจุลชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา
  • Nisa Krairak ภาควิชาจุลชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา
  • Apiradee Pilantanapak ภาควิชาจุลชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา

Abstract

Preliminary screening of 23 crude extracts from culture broths of fungal endophytes isolated from mangrove plants against 8 fungi contaminated on paddy; Rhizopus spp. (KCN 4, KHP 1, KHP 2 and KMK 7) Zygomycete KCN 2, KML 8 and anamorphic fungi KCN 5, KCN 6, by disc diffusion revealed five crude extracts (21.7%) inhibited growth of at least one fungal contaminating strain on paddy. Almost all of inhibited strains are slow growing (anamorphic fungi KCN 5 and KCN 6). The ethyl acetate extracts of mycelia sterilia BUEN 887 culture broth (887EtOAc) and ethanol extracts of mycelia sterilia BUEN 938 culture broth (938EtOH) strong inhibited (IE > 30%) KCN 6 and KCN 5, respectively. When two extracts from 7 days PDB cultures of BUEN 887 and BUEN 938 were selected for inhibitory activity testing against fungi contaminating on paddy; KCN 5 and KCN 6, by soaking the paddy in the extracts for 30 minutes. The result showed that 887EtOAc was able to inhibit growth of KCN 5 and KCN 6 for at least 24 hours. Extract 938EtOH could inhibit growth of KCN 6 and KCN 5 on paddy for at least 48 and 24 hours, respectively. Keywords :  crude extracts ; endophytic fungi ;  mangrove plant ; paddy

Author Biographies

Jenjira Marom, ภาควิชาจุลชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา

Nisa Krairak, ภาควิชาจุลชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา

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Apiradee Pilantanapak, ภาควิชาจุลชีววิทยา คณะวิทยาศาสตร์ ม.บูรพา

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Published

2020-09-01