Rapid nitrogen transfer from ectomycorrhizal pines to adjacent ectomycorrhizal and arbuscular mycorrhizal plants in a California oak woodland.

Xinhua He, C.S. Bledsoe, R.J. Zasoski, D. Southworth, W.R. Horwath

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    Nitrogen transfer among plants in a California oak woodland was examined in a pulse-labeling study using N-15. The study was designed to examine N movement among plants that were mycorrhizal with ectomycorrhizas (EM), arbuscular mycorrhizas (AM), or both.Isotopically enriched N ((KNO3-)-N-15) was applied to gray pine (Pinus sabiniana) foliage (donor) and traced to neighboring gray pine, blue oak (Quercus douglasii), buckbrush (Ceanothus cuneatus) and herbaceous annuals (Cynosurus echinatus, Torilis arvensis and Trifolium hirtum).After 2 wk, needles of N-15-treated pines and foliage from nearby annuals were similarly enriched, but little N-15 had appeared in nontreated (receiver) pine needles, oak leaves or buckbrush foliage. After 4 wk foliar and root samples from pine, oak, buckbrush and annuals were significantly N-15-enriched, regardless of the type of mycorrhizal association.The rate of transfer during the first and second 2-wk periods was similar, and suggests that N-15 could continue to be mobilized over longer times.
    Original languageEnglish
    Pages (from-to)143-151
    JournalNew Phytologist
    Volume170
    Issue number1
    DOIs
    Publication statusPublished - 2006

    Fingerprint Dive into the research topics of 'Rapid nitrogen transfer from ectomycorrhizal pines to adjacent ectomycorrhizal and arbuscular mycorrhizal plants in a California oak woodland.'. Together they form a unique fingerprint.

    Cite this