J 2008

Contrasting below- and aboveground responses of two deciduous trees to patchy nitrate availability

GLOSER, Vít, Cathryn LIBERA and Colin ORIANS

Basic information

Original name

Contrasting below- and aboveground responses of two deciduous trees to patchy nitrate availability

Name in Czech

Odlišné reakce podzemních a nadzemních částí dvou druhů listnatých stromů na heterogenní dostupnost dusíku.

Authors

GLOSER, Vít (203 Czech Republic, guarantor), Cathryn LIBERA (840 United States of America) and Colin ORIANS (840 United States of America)

Edition

Tree Physiology, 2008, 0829-318X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Canada

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.283

RIV identification code

RIV/00216224:14310/08:00024591

Organization unit

Faculty of Science

UT WoS

000252571800005

Keywords in English

aboveground heterogeneity; Acer rubrum; Betula papyrifera; nitrate reductase activity; nitrate uptake; patchy nitrate availability; sectoriality

Tags

Tags

International impact, Reviewed
Změněno: 4/5/2009 16:22, doc. RNDr. Vít Gloser, Ph.D.

Abstract

ORIG CZ

V originále

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.

In Czech

Heterogenita dusíku v půdě vedla ke zvýšené heterogenitě nadzemní části v růstu i chemickém složení listů.

Links

GA206/98/P268, research and development project
Name: Úloha dusíkatých zásobních látek v řízení růstových procesů třtiny křovištní (Calamagrostis epigejos)
Investor: Czech Science Foundation, A role of nitrogen storage compounds in control of growth processes of a grass Calamagrostis epigejos