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Plant defence mechanism of new rice line (PadiU Putra) influence by foliar application of
nanosilicon under bacterial panicle blight (Burkholderia glumae) infection

1 Muhamad Syazlie Che Ibrahim, Teo Han Meng, Aziz Ahmad, Mohd Sabri Mohd Ghazali, Wan
2
3
1
2
1 *
Rafizah Wan Abdullah, Ng Lee Chuen

1 Faculty of Fisheries and Food Science, Universiti Malaysia Terengganu,
21030 Kuala Nerus, Terengganu, Malaysia
2 Faculty of Science and Marine Environment, Universiti Malaysia Terengganu,
21030 Kuala Nerus Terengganu, Malaysia
3 Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu,
21030 Kuala Nerus, Terengganu, Malaysia

* Corresponding author: nglee@umt.edu.my

Abstract:
Rice plant typically absorb bio-available silicon in the form of organic silicates such as salicylic acid
and ortho-silic acid which help the growth and stability of skeletal structure of the plant along with
increased resistance to disease. Biogenic nano-silica from silicon accumulator plant rice husk waste by
reduction process (silica to silicon conversion) was successfully develop in this study. It was found that
rice husk has a relatively high content of silica 90% ash content. By using eco-friendly and cost-
effective method the preparation of nanosilicon includes the following steps: purification of raw
material, extraction of silica, reducing silica to silicon and final purification method to remove soluble
impurities. The purified product was characterized by a combination of scanning electron microscopy
(SEM), energy dispersive X-ray analysis (EDX), transmission electron microscopy (TEM) X-ray
diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). Silicon was applied to the rice
plant (PadiU Putra) which consisted of a control, bulk silicon, commercialized silicon and nanosilicon
at 600 ppm concentration were arranged in a randomised complete block design. At 120 days after
transplanting (DAT), the foliar applied nanosilicon treatments had 40% higher dry matter. The yield
production of rice increased by 33% in the nanosilicon foliar applied, compared to the control.

Keywords: Nanosilicon, Biogenic, Silica