Physiological and isotopic aspects of photosynthesis in Peperomia

Physiological and isotopic aspects of several Peperomia species were investigated. All but one species had C3-like stomatal behavior, in that stomata were open during the day and closed during the night. In these species, most atmospheric CO2 uptake occurred during the day. Concurrent with this stom...

Full description

Saved in:
Bibliographic Details
Published in:Plant physiology (Bethesda) 1985-06, Vol.78 (2), p.246-249
Main Authors: Ting, I.P, Bates, L, Sternberg, L.O, Deniro, M.J
Format: Article
Language:English
Subjects:
BIOCHEMICAL PATHWAYS
Biological and medical sciences
C3 plants
Carbon dioxide
Cellulose nitrate
Crassulacean acid metabolism
Dehydration
FOTOSINTESIS
Fundamental and applied biological sciences. Psychology
Greenhouses
Hydrogen
Metabolism
Organic acids
PEPEROMIA
PHOTOSYNTHESE
PHOTOSYNTHESIS
Photosynthesis, respiration. Anabolism, catabolism
Plant physiology and development
Plants
Stomata
VIA BIOQUIMICA DEL METABOLISMO
VOIE BIOCHIMIQUE DU METABOLISME
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Physiological and isotopic aspects of several Peperomia species were investigated. All but one species had C3-like stomatal behavior, in that stomata were open during the day and closed during the night. In these species, most atmospheric CO2 uptake occurred during the day. Concurrent with this stomatal behavior, there were Crassulacean acid metabolism-like acid fluctuations in most species. Carbon and hydrogen isotope ratios of cellulose nitrate from Peperomia reflect their physiological behavior. The δ 13C values of cellulose nitrate from Peperomia species were similar to values observed in C3 plants and consistent with the daytime uptake of exogeneous CO2 via the C3 photosynthetic pathway. The δD values of cellulose nitrate from Peperomia species approach those of Crassulacean acid metabolism plants. These elevated δD values are caused by fractionations occurring during biochemical reactions and not as a consequence of water relations.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.78.2.246