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@article{743409,
author = {Gloser, Vít and Libera, Cathryn and Orians, Colin},
article_number = {1},
keywords = {aboveground heterogeneity; Acer rubrum; Betula papyrifera; nitrate reductase activity; nitrate uptake; patchy nitrate availability; sectoriality},
language = {eng},
issn = {0829-318X},
journal = {Tree Physiology},
title = {Contrasting below- and aboveground responses of two deciduous trees to patchy nitrate availability},
volume = {28},
year = {2008}
}
TY - JOUR
ID - 743409
AU - Gloser, Vít - Libera, Cathryn - Orians, Colin
PY - 2008
TI - Contrasting below- and aboveground responses of two deciduous trees to patchy nitrate availability
JF - Tree Physiology
VL - 28
IS - 1
SP - 37-44
EP - 37-44
SN - 0829318X
KW - aboveground heterogeneity
KW - Acer rubrum
KW - Betula papyrifera
KW - nitrate reductase activity
KW - nitrate uptake
KW - patchy nitrate availability
KW - sectoriality
N2 - We investigated how patchy nitrate availability influences growth and functioning of plant roots, and generates, via vascular constraints on long-distance transport, aboveground heterogeneity in plant growth and chemistry. We examined two broadleaf tree species, Acer rubrum (L.) and Betula papyrifera (Marshall). There was no significant change in N uptake rates in the patchy treatment compared to the homogeneous treatment by either species. In Acer, patchy nitrate resulted in aboveground heterogeneity. Specifically, leaves above the N fertilized roots were larger and had higher chlorophyll content. In Betula, no aboveground heterogeneity was observed. Thus patchy nitrate availability alone can be responsible for heterogeneity in functioning, chemical composition, and shoot development, and is especially pronounced if vascular architecture restricts the movement of xylem sap.
ER -
GLOSER, Vít, Cathryn LIBERA and Colin ORIANS. Contrasting below- and aboveground responses of two deciduous trees to patchy nitrate availability. \textit{Tree Physiology}. 2008, vol.~28, No~1, p.~37-44, 13 pp. ISSN~0829-318X.
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