Plant growth-promoting properties of cultivable endophytic root nodule bacterial isolates from Acacia mangium Willd
The present study was conducted to isolate and characterize endophytic bacteria isolated from root nodules of Acacia mangium Willd and subsequently tested for plant growth promotion. A total of five bacterial isolates were successfully isolated and subjected to morphological and biochemical exami...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2016
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| Subjects: | |
| Online Access: | http://eprints.unisza.edu.my/5433/1/FH02-FBIM-16-07680.pdf http://eprints.unisza.edu.my/5433/ |
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| Institution: | Universiti Sultan Zainal Abidin |
| Language: | English |
| Summary: | The present study was conducted to isolate and characterize endophytic bacteria
isolated from root nodules of Acacia mangium Willd and subsequently tested for plant
growth promotion. A total of five bacterial isolates were successfully isolated and
subjected to morphological and biochemical examination. The present study found that
all isolates had almost similar morphologically but differed in growth rate. All isolates
were negative on N-free and IAA tests, though positive on P solubilisation test. The
present study demonstrated that the inoculation with isolate FSI3 had significantly
improved (p<0.05) root and shoot dry weight of winged bean seedlings as compared to
uninoculated control. However, the inoculation did not significantly alter (p>0.05) root
and shoot length of winged bean seedlings. The present study suggests that the
stimulatory effect by isolate FSI3 may be associated with P-solubilizing ability. A further
test on isolate FSI3 is considered essential in future to uncover the several other possible
plant growth-promoting mechanisms. |
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