Rice Plant Growth Enhancement and Bacterial Leaf Blight Control by the Rhizobacterial Consortium

H Rahma, W Winarto, S Mulyani… - … Conference on Biology …, 2023 - atlantis-press.com
3rd International Conference on Biology, Science and Education …, 2023atlantis-press.com
Bacterial leaf blight (BLB) in rice plants is brought on by the bacterium Xanthomonas oryzae
pv. oryzae (Xoo). Rhizobacteria are a group of plant root microorganisms that have a
beneficial effect on plants. The rhizobacteria A consortium is a collection of friendly
microorganisms that can prevent the spread of plant diseases. In this study, we to boost rice
plant growth and manage BLB disease by acquiring an efficient consortium of rhizobacteria.
The study employed a two-stage, entirely randomized design. Stenotrophomonas pavanii …
Abstract
Bacterial leaf blight (BLB) in rice plants is brought on by the bacterium Xanthomonas oryzae pv. oryzae (Xoo). Rhizobacteria are a group of plant root microorganisms that have a beneficial effect on plants. The rhizobacteria A consortium is a collection of friendly microorganisms that can prevent the spread of plant diseases. In this study, we to boost rice plant growth and manage BLB disease by acquiring an efficient consortium of rhizobacteria. The study employed a two-stage, entirely randomized design. Stenotrophomonas pavanii KJKB 5.4, S. malthophilia LMTSA 5.4, and Bacillus cereus AJ 3.4 were combined in stage 1 to test the viability of the mixture with shelf lives of 0, 2, and 6 weeks. The rhizobacteria consortium’s second stage of testing a biocontrol agent and biological fertilizer in plants. The seeds were soaked before being added to the rhizobacteria consortium solution, and roots of rice seedlings, followed by inoculation of Xoo bacteria when the plants were 40 days old. Phase 1 results showed that the rhizobacterial population was relatively stable up to six weeks of storage, around 107 CFU/mL. The results of stage 2 demonstrated that when compared to controls, the rhizobacteria consortium significantly affected various levels of severity. S. pavanii KJKB 5.4+ S. malthophilia LMTSA 5.4) and S. pavanii KJKB 5.4+ S. malthophilia LMTSA 5.4+ B. cereus AJ 3.4) were both preserved for six weeks. Which was kept in storage for two weeks revealed illness severity of 43.15 and 43.93%, respectively, with disease suppression effectiveness of 52.04 and 48.77%. As a result of the consortium of S. pavanii KJKB 5.4+ S. malthophilia LMTSA 5.4+ B. cereus AJ 3.4 being stored for six weeks, rice plants with an effective vigor index of 13.15% and root length of 41.41% grew more quickly. The results of this study indicate that the rhizobacteria consortium is effective in suppressing the severity of BLB disease and increasing the growth of rice plants.
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