Author: Febri Doni
Title: Physiological Effects and Transcriptomic Profiling of Rice Plant - Microbe Interatctions in System of Rice Intensification (SRI) Management
Presented at: The 5th International Rice Congress (SRI research side event)
Venue: Sands Expo and Convention Centre, Singapore
Date: October 16, 2018
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1809 - Physiological Effects and Transcriptomic Profiling of Rice Plant - Microbe Interactions in System of Rice Intensification (SRI) Management
1. Physiological effects and transcriptomic profiling of
rice plant - microbe interactions in a System of Rice
Intensification (SRI) management
www.ukm.my
Dr. Febri Doni
Malaysian Agroecology Society (SRI-Mas)
2. SRI vs. Conventional methods
SRI Non-SRI
SRI
Non-SRI
SRI Non-SRI
Lodging from
storm damage
Darker green color, more chloro-
phyll and more photosynthesis
3. SRI methods increase rice yield
~ 𝟓 𝒕𝒊𝒎𝒆𝒔
~ 𝟑 𝒕𝒊𝒎𝒆𝒔
~ 𝟒 𝒕𝒊𝒎𝒆𝒔
~ 𝟐 𝒕𝒊𝒎𝒆𝒔
~ 𝟑 𝒕𝒊𝒎𝒆𝒔
Malaysian national average yield is 3.64 ton/ha, using conventional methods
Yield of SRI Rice is Higher Compared to Conventional
~ 𝟐 𝒕𝒊𝒎𝒆𝒔
4. Can SRI rice plants produce such
high yields without the assistance of
soil and endophytic microbes?
5. Plant-microbe interactions under SRI
SRI CONV
T. asperellum SL2
T. asperellum SL2
Effects of SRI on (i) growth and yield,
(ii) physiological traits, (iii) NPK uptake, and
(iv) gene expression.
Trichoderma asperellum
SL2
6. Trichoderma + SRI can increase rice plant growth
Source: Doni et al., (2016)
7. Trichoderma + SRI improve rice plants’ physiological traits
Rice plants inoculated with T. asperellum
SL2 and grown under SRI methods (SRI+T)
recorded the greatest physiological traits
compared to rice plants similarly
inoculated but grown with conventional
methods (CON+T) and to SRI plants grown
without inoculation (SRI+O). Columns of
same color with different letters indicate a
significant difference at p<0.05 (DMRT
test)
8. Transcriptomic profiling of rice plants having both
Trichoderma-inoculation and SRI management
T. asperellum SL2
Weeding
Compost
Several important genes were
up-regulated in Tric + SRI plants
compared to Tric + Conv plants
and SRI + O plants
OsARF12 – root-elongation gene
OsPHR2 – P-uptake gene
OsCAND – crown root emergence gene
OsGAE1 - gibberellin-regulated gene
Source: Doni et al. (2017)
OsRBCS1 – rubisco-related genes
OsRBCS2
MOC1 – tillering-related gene