Abstract
Peperomia camptotricha, a tropical epiphyte from Mexico, shows variable forms of Crassulacean acid metabolism (CAM). Young leaves exhibit CAM-cycling, while mature leaves show an intermediate type of metabolism, between CAM and CAM-cycling, having approximately the same amount of nighttime gas exchange as daytime. Metabolism of young leaves appears independent of daylength, but mature leaves have a tendency toward more CAM-like metabolism under short days (8 hours). Large differences in the physical appearance of plants were found between those grown under short daylengths and those grown under long daylengths (14 hours). Some anatomical differences were also detected in the leaves. Water stress caused a switch to CAM in young and mature leaves, and as water stress increased, they shifted to CAM-idling.
Full text
PDF
Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Hanscom Z., Ting I. P. Responses of succulents to plant water stress. Plant Physiol. 1978 Mar;61(3):327–330. doi: 10.1104/pp.61.3.327. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Martin C. E., Siedow J. N. Crassulacean Acid Metabolism in the Epiphyte Tillandsia usneoides L. (Spanish Moss) : RESPONSES OF CO(2) EXCHANGE TO CONTROLLED ENVIRONMENTAL CONDITIONS. Plant Physiol. 1981 Aug;68(2):335–339. doi: 10.1104/pp.68.2.335. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sternberg L. O., Deniro M. J., Ting I. P. Carbon, hydrogen, and oxygen isotope ratios of cellulose from plants having intermediary photosynthetic modes. Plant Physiol. 1984 Jan;74(1):104–107. doi: 10.1104/pp.74.1.104. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ting I. P., Hanscom Z. Induction of Acid Metabolism in Portulacaria afra. Plant Physiol. 1977 Mar;59(3):511–514. doi: 10.1104/pp.59.3.511. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ting I. P., Sternberg L. O., Deniro M. J. Variable Photosynthetic Metabolism in Leaves and Stems of Cissus quadrangularis L. Plant Physiol. 1983 Mar;71(3):677–679. doi: 10.1104/pp.71.3.677. [DOI] [PMC free article] [PubMed] [Google Scholar]