Bacterial community shifts associated with high abundance of Rhizobium spp. in potato roots under macronutrient-deficient conditions

Yusuke Unno, Takuro Shinano, Kiwamu Minamisawa, Seishi Ikeda

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    We evaluated the impacts of a macronutrient deficiency on the community structure of root-associated bacteria in potato ( Solanum tuberosum) cultivation. Potato plants were cultivated in a long-term experimental field under a nitrogen, phosphorus, or potassium deficiency, and roots were sampled at the early flowering stage. Amplicon libraries of 16S rRNA gene were constructed for root-associated bacteria, and bacterial diversity was analyzed by means of pyrosequencing. Statistical analyses showed significantly lower species evenness in the nutrient-deficient plots compared with the value in a plot with standard fertilization. Phylogenetic analyses revealed that the abundance of Rhizobium spp. increased dramatically in all plots under a macronutrient deficiency.

    Original languageEnglish
    Pages (from-to)232-236
    Number of pages5
    JournalSoil Biology and Biochemistry
    Volume80
    DOIs
    Publication statusPublished - 2015 Jan 1

    Keywords

    • Bacterial community
    • Fertilization
    • Potato
    • Rhizobium
    • Root-associated bacteria

    ASJC Scopus subject areas

    • Microbiology
    • Soil Science

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