PHYSIOLOGICAL ASPECTS OF RAINFOREST REGENERATION: I. EFFECTS OF LIGHT AND NITROGEN SOURCE ON GROWTH AND AMMONIUM ASSIMILATING ENZYMES OF SOLANUM MAURITIANUM AND SYZYGIUM FLORIBUNDUM

CHANDLER G. (1981) PHYSIOLOGICAL ASPECTS OF RAINFOREST REGENERATION: I. EFFECTS OF LIGHT AND NITROGEN SOURCE ON GROWTH AND AMMONIUM ASSIMILATING ENZYMES OF SOLANUM MAURITIANUM AND SYZYGIUM FLORIBUNDUM. New Phytologist, 87 2: 301-313. doi:10.1111/j.1469-8137.1981.tb03201.x


Author CHANDLER G.
Title PHYSIOLOGICAL ASPECTS OF RAINFOREST REGENERATION: I. EFFECTS OF LIGHT AND NITROGEN SOURCE ON GROWTH AND AMMONIUM ASSIMILATING ENZYMES OF SOLANUM MAURITIANUM AND SYZYGIUM FLORIBUNDUM
Journal name New Phytologist   Check publisher's open access policy
ISSN 1469-8137
Publication date 1981-01-01
Sub-type Article (original research)
DOI 10.1111/j.1469-8137.1981.tb03201.x
Open Access Status Not yet assessed
Volume 87
Issue 2
Start page 301
End page 313
Total pages 13
Subject 1314 Physiology
2700 Medicine
1110 Nursing
Abstract Syzygium floribundum, a rainforest climax species and Solarium mauritianum, a rainforest pioneer, were raised in sand cultures containing NO3 − or NH4 + under various shade regimes. Optimum growth of Syzygium occurred with NH4 + and of Solatium with NO3 −. Ammonium appeared toxic for Solatium at low light intensity. Shoot‐root ratios of Syzygium were remarkably constant irrespective of light intensity but ammonium promoted greater leaf production. Conversely, Solatium shoot‐root ratios were not affected by nutrients but increased dramatically at low light intensity. Leaves of Syzygium exhibited high levels of glutamate dehydrogenase (GDH) activity which decreased with increasing light intensity. Roots of Syzygium exhibited low GDH activity. This, together with high glutamine synthetase (GS) activity in the roots, suggests that GS is the main ammonium assimilating enzyme in the roots of Syzygium. GDH and GS are both active in the leaves of this species. High GDH and low GS activity in both leaves and roots of Solatium suggests that GDH is the main NH4 + assimilating enzyme in this species. Copyright
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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