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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)
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
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
Can SRI rice plants produce such
high yields without the assistance of
soil and endophytic microbes?
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
Trichoderma + SRI can increase rice plant growth
Source: Doni et al., (2016)
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)
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
TERIMA KASIH

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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