Seasonal variation in nitrogen fixation, associated microbial populations, and carbohydrates in roots and rhizomes of Typha latifolia ( Typhaceae).

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Populations of anaerobic and aerobic diazotrophic bacteria were present on the root surface. Anaerobic bacteria predominated in the diazotrophic association, were more active in the acetylene reduction assay, and generally outnumbered aerobic bacteria by 2 to 1 during maximum rates of seasonal nitrogen fixation. Maximum N-fixation rate coincided closely with reproductive development in Typha and peak microbial populations. Starch levels in rhizomes were nearly depleted during the middle of the growing season, whereas free sugar concentrations remained stable. Sugar concentrations in the roots increased rapidly during rhizome-root growth and decreased rapidly prior to peak nitrogenase activity. -from Author

Original languageEnglish (US)
Pages (from-to)1965-1967
Number of pages3
JournalCanadian Journal of Botany
Volume62
Issue number9
DOIs
StatePublished - Jan 1 1984

Fingerprint Dive into the research topics of 'Seasonal variation in nitrogen fixation, associated microbial populations, and carbohydrates in roots and rhizomes of Typha latifolia ( Typhaceae).'. Together they form a unique fingerprint.

Cite this