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Isolation of a Pink-pigmented Facultative Methylotrophic Bacteria and its Growth-promoting Effect on Pepper Plants


Affiliations
1 Guangdong Province Pesticide-Fertilizer Technology Research Center, Institute of Nanfan and Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, China
2 Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
 

Microorganisms offer a low-cost, eco-friendly alterna-tive to chemical fertilizers. A pink-pigmented facultative methylotrophic bacterium Gen-B2 was isolated from sugarcane rhizosphere and its growth-promoting acti-vity was detected using in vitro experiments. Based on morphological, biochemical and molecular character-istics, Gen-B2 was identified as Methylobacterium popu-li. Pepper seedling inoculation significantly benefitted shoot/root fresh/dry weight, plant height, chlorophyll content and average true leaf number. Determination of activities related to growth promotion indicated that Gen-B2 promoted plant growth through nitrogen fixa-tion and indole acetic acid synthesis. The present study suggests that this bacterium has great potential to be used as a bioinoculant for sustainable cultivation.

Keywords

Growth Promotion, Indole-3-acetic Acid, Methylobacterium Populi, Nitrogen Fixation, Pepper Plants, Sugarcane Rhizosphere
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  • Isolation of a Pink-pigmented Facultative Methylotrophic Bacteria and its Growth-promoting Effect on Pepper Plants

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Authors

Ting Yang
Guangdong Province Pesticide-Fertilizer Technology Research Center, Institute of Nanfan and Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, China
Fachao Shi
Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
Yuxing An
Guangdong Province Pesticide-Fertilizer Technology Research Center, Institute of Nanfan and Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, China
Donglei Sun
Guangdong Province Pesticide-Fertilizer Technology Research Center, Institute of Nanfan and Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, China
Yinglin Lu
Guangdong Province Pesticide-Fertilizer Technology Research Center, Institute of Nanfan and Seed Industry, Guangdong Academy of Sciences, Guangzhou 510316, China

Abstract


Microorganisms offer a low-cost, eco-friendly alterna-tive to chemical fertilizers. A pink-pigmented facultative methylotrophic bacterium Gen-B2 was isolated from sugarcane rhizosphere and its growth-promoting acti-vity was detected using in vitro experiments. Based on morphological, biochemical and molecular character-istics, Gen-B2 was identified as Methylobacterium popu-li. Pepper seedling inoculation significantly benefitted shoot/root fresh/dry weight, plant height, chlorophyll content and average true leaf number. Determination of activities related to growth promotion indicated that Gen-B2 promoted plant growth through nitrogen fixa-tion and indole acetic acid synthesis. The present study suggests that this bacterium has great potential to be used as a bioinoculant for sustainable cultivation.

Keywords


Growth Promotion, Indole-3-acetic Acid, Methylobacterium Populi, Nitrogen Fixation, Pepper Plants, Sugarcane Rhizosphere

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DOI: https://doi.org/10.18520/cs%2Fv123%2Fi2%2F214-219