The Potentiality of Forest Litter Fungi as IAA (Indole-3-Acetic Acid) Producer

JudulThe Potentiality of Forest Litter Fungi as IAA (Indole-3-Acetic Acid) Producer
Publication TypeConference Paper
Year of Publication2013
AuthorsImaningsih, W, Rahayu, G, Triadiati,
Conference NameInternatiomal Symposium on Indonesian Biodiversity
PublisherFaculty of Biology, Jenderal Soedirman University
Conference LocationPurwokerto, Central Java, Indonesia
Keywordsfungi, IAA, plant growth
Abstract

Many industrial forest in Indonesia are replanted under intensive silviculture program. This program includes utilizing of soil microorganism for supporting promoting better plant growth. Preliminary study was done on the exploration of forest litter fungi that are able to produce IAA. Six termotolerant fungi (Aspergillus sp B.10, Aspergillus sp 20.2, Penicillium sp 4.2, Aspergillus sp 9.2, Penicillium sp 1.2 and Trichoderma sp B.2) haves been isolated from forest litter. All isolates can produced IAA with various concentration, ranges from 15.56 ppm to 76.81 ppm. Two isolates (Penicillium sp 1.2 and Trichoderma sp B.2) which produced the high IAA concentration were further examined. Bioassay of 10-2 ppm, 10-4 ppm and 10-6 ppm of crude extract IAA using mung bean (Vigna radiata) seedling indicated that the extract only significantly effectedtive on theat total number of lateral root. Filtrate from those isolates induced lateral root formation more than those of the IAA standard on the same concentration . However, Tthe total number of lateral root on both extract were not significantly different. The best nitrogen source for IAA production from Penicillium sp 1.2 and Trichoderma sp B.2 were peptone (1%). other isolate

 
 
 

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