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Dominant Root Associated Fungi (Raf) From Drynaria Quercifolia L. Either Induce Or Retard Growth Of Psb Rc10 Rice (Oryza Sativa L.) In Gibberellic Acid-Inhibited Medium, Jomar L. Aban, Racquel C. Barcelo, Evelyn E. Oda, Gaudelia A. Reyes, Teodora D. Balangcod, Rosemary M. Gutierrez, Roland M. Hipol

Applied Environmental Research

The testing and use of microorganisms for in vitro growth promotion of agriculturally significant crops such as rice has increased but remains underexploited. The current study aims to explore growth-enhancing mechanisms of dominant root-associated fungi (RAF) isolates from Drynaria quercifolia and test their effects on rice. The most abundant RAF on five tree-collection sites were cultured in vitro. Genomic DNA of the RAF were extracted and the ITS (internal transcribed spacer) region of the 18S ribosomal DNA (rDNA) were sequenced and molecularly identified. Two RAF isolates significantly increased the plant shoot/total length (Meyerozyma guilliermondii: 10.29±4.18/13.46±4.18 cm; Trichoderma simmonsii: 10.33±1.38/13.23+1.58 cm), …