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Potential of biodegrader-Trichoderma with plant growth promoting properties for rice (Oryza
sativa L.)

* 2
1
1 Nabihah Zakaria, Ng Lee Chuen , Aziz Ahmad

1 Laboratory of Pest, Disease and Microbial Biotechnology (LAPDiM), Faculty of Fisheries and Food
Science, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia.
2 Biological Security and Sustainability, Faculty of Science and Marine Environment, Universiti
Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia.

* Corresponding author: nglee@umt.edu.my

Abstract:

The abundance of global rice residue production has increased global awareness. Alternatively, the use
of rice straw compost for sustainable rice production has gained great interest. But the microbiota
responsible for the biodegradation of rice residue have not been thoroughly researched and discovered.
The studies aim to isolate and identify Trichoderma spp. for biodegradation of rice residue and further
evaluate the potential isolates for plant growth promoting properties. The Trichoderma isolated using
selected media from various sources, mainly rhizosphere soil and decaying plant parts. Preliminary
selection of Trichoderma is through enzymatic degradation activities of cellulose and lignin. Isolates
were subjected to quantitative and qualitative validation tests. Isolates with hydrolysis capacity (HC)
value higher than 0.5 in quantitative assessment with a media colour clearance score of >1 in qualitative
validation test were selected. Total of 49 isolates has been successfully screened and 28 isolates were
selected. Out of 28 isolates, 3 are lignin degrader; 9 are cellulose degrader; and 15 isolates possess both
lignin and cellulose degradation properties. The research is expecting to discover rice residue
biodegrader-Trichoderma isolates with plant growth promoting properties and biocontrol potential
against Burkholderia glumae.

Keywords: Fungi, Trichoderma, Biodegradation, Lignocellulolytic, Rice straw