| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
Neptunomonas sp. BPy-1 is an epiphytic bacterium isolated from in vitro culture of the red alga Pyropia
yezoensis. A related bacterium Neptunomonas sp. BZm-1 was isolated from leaves of a seagrass Zostera marina in Yatsushiro Sea. Both clones produced indole acetic acid (IAA) and promoted the growth of P. yezoensis. Bacterial IAA production was strictly dependent on tryptophan but less affected by carbon and nitrogen sources. Whole genome sequences were available for five Neptunomonas species. All of them lack two key genes in bacterial IAA biosynthetic pathway, instead some homologous genes with unrelated origin are present. To examine whether this property is present in BPy-1, whole genome sequences of BPy-1 was analyzed. The same composition of IAA biosynthetic genes was present in BPy-1.
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