文献类型：期刊文献

英文题名：Diversity and Antibacterial and Antioxidant Activities of Fungal Endophytes from the Roots of Eucalyptus deglupta

作者：Wang, Wei[1] Mao, Ziling[1] Wu, Chunyin[1] Shahid, Hamza[1] Wang, Shengkun[2] Shan, Tijiang[1]

第一作者：Wang, Wei

通信作者：Wang, SK[1]|[a000525742547592ccd85]王胜坤;

机构：[1]South China Agr Univ, Coll Forestry & Landscape Architecture, Guangzhou 510642, Guangdong, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China

年份：2022

卷号：51

期号：6

起止页码：1687-1696

外文期刊名：SAINS MALAYSIANA

收录：;Scopus(收录号：2-s2.0-85136743655);WOS:【SCI-EXPANDED(收录号:WOS:000880122400007)】；

基金：ACKNOWLEDGEMENTS We thank Huixiong Wu for logistical assistance. This research was co-financed by the Natural Science Foundation of Guangdong Province (2019A1515011554) , the National Natural Science Foundation of China (32071766) , the Forestry Science and Technology Innovation Project of Guangdong Province (2020KJCX004) and the Key Research and Development Projects of Guangdong Province (2020B020214001) .

语种：英文

外文关键词：Antibacterial activity; antioxidant activity; crude extracts; endophytic fungi; Eucalyptus deglupta

摘要：In this study, 45 endophytic fungal strains were isolated from the roots of Eucalyptus deglupta. Among them, 16 distinct strains were identified and classified into 14 different genera (Celoporthe, Aspergillus, Castanediella, Chaetomium, Biscogniauxia, Sordariales, Pestalotiopsis, Clitopilus, Cylindrocladiella, Calonectria, Trichoderma, Xylaria, Neofusicoccum and Pleosporales) according to their morphological characteristics and molecular information. The genera Aspergillus and Calonectria were the dominant endophytic fungi in the roots of E. deglupta. In addition, the antibacterial and antioxidant activities of the 16 endophytic fungi isolated from the roots of E. deglupta were evaluated. All the strains displayed inhibitory activities against Agrobacterium tumefaciens, Bacillus subtilis, Escherichia coli, and Xanthomonas vesicatoria. Strains Edf-1 to Edf-4, Edf-11 and Edf-12 demonstrated strong inhibitory activity against R. solanacearum with plaque diameters between 5 and 10 mm. The crude extract of Edf-14 had inhibitory activity against all tested bacteria. Five strains, Edf-1 to Edf-5, demonstrated a strong scavenging capacity for 2,2-diphenyl-1-picrylhydrazyl (DPPH), with IC50 values of 0.26 +/- 0.04, 0.11 +/- 0.03, 0.20 +/- 0.05, 0.10 +/- 0.04 and 0.14 +/- 0.02 mg/mL, respectively. Hence, endophytic fungi isolated from the roots of E. deglupta showed antibacterial and antioxidant activities, providing a theoretical foundation for further isolation and identification of specific active components.