TY - JOUR
T1 - Bioactive chemical constituents produced by endophytes and effects on rice plant growth
AU - Waqas, Muhammad
AU - Khan, Abdul Latif
AU - Lee, In Jung
PY - 2014
Y1 - 2014
N2 - We investigated the bioactive potential of fungal endophytes isolated from the roots of Glycine max (L.) Merr. and Cucumis sativus. Initial screening results showed that endophytes, (Chrysosporium pseudomerdarium, Aspergillus fumigates and Paecilomyces sp., Penicillium sp., Phoma glomerata, and Paecilomyces formosus) were promoting the growth attributes (shoot length, chlorophyll contents, and biomass) of mutant and wild-type rice. To know whether, these endophytes were producing bioactive chemical constituents; the endophytes were grown in potato dextrose, czapek broth, and ICI mediums that resulted in varying mycelia biomass. The advance chromatographic analysis of endophytic fungal culture filtrate showed gibberellins (GA) production namely GA1 (0.05-10.55 ngml-1), GA3 (0.48-9.0 ngml-1), GA4 (0.2-8.0 ngml-1), GA7 (1.4-6.5 ngml-1), and GA9 (0.03-1.05 ngml-1) while among endophytes, P. glomerata and P. formosus were highly potent in GAs production. Additionally, the endophyte?s culture also contained indole-3-acetic acid (0.23-71.51 μgml-1). Furthermore, oxalic (0.009-0.3 mgl-1), quinic (0.019-0.22 mgl-1), malic (1.94-17.2 mgl-1), and citric (0.012-0.95 mgl-1) acids were also present in the endophytic cultures. The biochemical potential of endophytes greatly varied depending on nutrient source and pH, however, czapek broth rich in carbon revealed higher potential for bioactive chemical constituent?s production. In conclusion, the current findings suggest that endophyte can play a vital role in essential crop plant growth by synthesizing a wide array of bioactive metabolites. Furthermore, an increased production of chemical constituents can be achieved by changing the in vitro growth conditions of endophytes.
AB - We investigated the bioactive potential of fungal endophytes isolated from the roots of Glycine max (L.) Merr. and Cucumis sativus. Initial screening results showed that endophytes, (Chrysosporium pseudomerdarium, Aspergillus fumigates and Paecilomyces sp., Penicillium sp., Phoma glomerata, and Paecilomyces formosus) were promoting the growth attributes (shoot length, chlorophyll contents, and biomass) of mutant and wild-type rice. To know whether, these endophytes were producing bioactive chemical constituents; the endophytes were grown in potato dextrose, czapek broth, and ICI mediums that resulted in varying mycelia biomass. The advance chromatographic analysis of endophytic fungal culture filtrate showed gibberellins (GA) production namely GA1 (0.05-10.55 ngml-1), GA3 (0.48-9.0 ngml-1), GA4 (0.2-8.0 ngml-1), GA7 (1.4-6.5 ngml-1), and GA9 (0.03-1.05 ngml-1) while among endophytes, P. glomerata and P. formosus were highly potent in GAs production. Additionally, the endophyte?s culture also contained indole-3-acetic acid (0.23-71.51 μgml-1). Furthermore, oxalic (0.009-0.3 mgl-1), quinic (0.019-0.22 mgl-1), malic (1.94-17.2 mgl-1), and citric (0.012-0.95 mgl-1) acids were also present in the endophytic cultures. The biochemical potential of endophytes greatly varied depending on nutrient source and pH, however, czapek broth rich in carbon revealed higher potential for bioactive chemical constituent?s production. In conclusion, the current findings suggest that endophyte can play a vital role in essential crop plant growth by synthesizing a wide array of bioactive metabolites. Furthermore, an increased production of chemical constituents can be achieved by changing the in vitro growth conditions of endophytes.
KW - Fungal endophytes
KW - Gibberellins
KW - IAA
KW - Nutrient media
KW - Organic acids
KW - PH
UR - http://www.scopus.com/inward/record.url?scp=84904461606&partnerID=8YFLogxK
U2 - 10.1080/17429145.2013.860562
DO - 10.1080/17429145.2013.860562
M3 - Article
AN - SCOPUS:84904461606
SN - 1742-9145
VL - 9
SP - 478
EP - 487
JO - Journal of Plant Interactions
JF - Journal of Plant Interactions
IS - 1
ER -