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Titolo:
Response of shoot and root growth to supply of different nitrogen forms isnot related to carbohydrate and nitrogen status of tobacco plants
Autore:
Walch-Liu, P; Neumann, G; Engels, C;
Indirizzi:
Univ Hohenheim, Inst Pflanzenernahrung, D-70593 Stuttgart, Germany Univ Hohenheim Stuttgart Germany D-70593 ung, D-70593 Stuttgart, Germany Univ Bayreuth, Fachgrp Geowissensch, Abt Agrarokol, D-95440 Bayreuth, Germany Univ Bayreuth Bayreuth Germany D-95440 arokol, D-95440 Bayreuth, Germany
Titolo Testata:
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE-ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE
fascicolo: 1, volume: 164, anno: 2001,
pagine: 97 - 103
SICI:
1436-8730(200102)164:1<97:ROSARG>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAJOR SSP PLEIOSPERMA; URTICA-DIOICA; NITRATE; AMMONIUM; MAIZE; CYTOKININS; SYSTEM; RATIO; PHOTOSYNTHESIS; METABOLISM;
Keywords:
ammonium; nitrate; N deficiency; localized N supply; homogeneous N supply; root growth;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Walch-Liu, P Univ Hohenheim, Inst Pflanzenernahrung, D-70593 Stuttgart, Germany Univ Hohenheim Stuttgart Germany D-70593 Stuttgart, Germany
Citazione:
P. Walch-Liu et al., "Response of shoot and root growth to supply of different nitrogen forms isnot related to carbohydrate and nitrogen status of tobacco plants", J PLANT NU, 164(1), 2001, pp. 97-103

Abstract

In the present study, we investigated effects of homogeneous or localized supply of different nitrogen (N) forms on shoot and root growth of tobacco. While homogeneous supply of NH4+ and N deprivation inhibited shoot growth compared with application of NO3-, the N form had no significant effect on root growth. In contrast, in a split-root experiment, application of NH4+ or N deprivation in one half of the root system repressed mot growth compared with the other part of the root, which was supplied with NO3-. However. shoot growth was not affected by localized NH4+ application or local N deprivation. Inhibitory effects on shoot and root growth by variations of N supply could not be related to limitations in N or C status of the plants or toNH4+ toxicity. A possible involvement of NO3- as a signal compound including of phytohormones is discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 00:43:25