You need JavaScript to view this

Photosynthetic pathways of some aquatic plants

Abstract

Over 40 species of aquatic angiosperms, including submersed, floating and emergent types, have been examined for photosynthetic status as part of a search for possible aquatic C/sub 4/ species. The C/sub 4/ system is viewed as potentially of adaptive value in certain aquatic situations, although evidence for its occurrence there is not conclusive. Emphasis was on plants from North-temperate softwater and hardwater lakes to explore both possibilities of CO/sub 2/ limitation, i.e., low total inorganic carbon in softwater vs. low free CO/sub 2/ in hardwater lakes. On the basis of leaf cross-section anatomy, all plants examined, with one exception, clearly did not show evidence of C/sub 4/ ''Krantz anatomy.'' In the submersed plant Potamogeton praelongus Wulf, large starch-producing chloroplasts were concentrated in cells surrounding vascular bundles and in a narrow band of cells between vascular bundles. The in situ photosynthetic rate of this plant was twice that of a related species, but other evidence including PEP carboxylase content and photorespiratory response to high O/sub 2/ did not confirm the presence of the C/sub 4/ photosynthesis.
Authors:
Hough, R A; [1]  Wetzel, R G
  1. Wayne State Univ., Detroit
Publication Date:
Dec 01, 1977
Product Type:
Journal Article
Reference Number:
ERA-04-006621; EDB-79-021849
Resource Relation:
Journal Name: Aquat. Bot.; (Netherlands); Journal Volume: 3:4
Subject:
54 ENVIRONMENTAL SCIENCES; PHOTOSYNTHESIS; AQUATIC ORGANISMS; BIOCHEMISTRY; PLANTS; CHEMICAL REACTIONS; CHEMISTRY; PHOTOCHEMICAL REACTIONS; SYNTHESIS; 520100* - Environment, Aquatic- Basic Studies- (-1989)
OSTI ID:
6542644
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: AQBOD
Submitting Site:
TIC
Size:
Pages: 297-313
Announcement Date:
Dec 01, 1978

Citation Formats

Hough, R A, and Wetzel, R G. Photosynthetic pathways of some aquatic plants. Netherlands: N. p., 1977. Web.
Hough, R A, & Wetzel, R G. Photosynthetic pathways of some aquatic plants. Netherlands.
Hough, R A, and Wetzel, R G. 1977. "Photosynthetic pathways of some aquatic plants." Netherlands.
@misc{etde_6542644,
title = {Photosynthetic pathways of some aquatic plants}
author = {Hough, R A, and Wetzel, R G}
abstractNote = {Over 40 species of aquatic angiosperms, including submersed, floating and emergent types, have been examined for photosynthetic status as part of a search for possible aquatic C/sub 4/ species. The C/sub 4/ system is viewed as potentially of adaptive value in certain aquatic situations, although evidence for its occurrence there is not conclusive. Emphasis was on plants from North-temperate softwater and hardwater lakes to explore both possibilities of CO/sub 2/ limitation, i.e., low total inorganic carbon in softwater vs. low free CO/sub 2/ in hardwater lakes. On the basis of leaf cross-section anatomy, all plants examined, with one exception, clearly did not show evidence of C/sub 4/ ''Krantz anatomy.'' In the submersed plant Potamogeton praelongus Wulf, large starch-producing chloroplasts were concentrated in cells surrounding vascular bundles and in a narrow band of cells between vascular bundles. The in situ photosynthetic rate of this plant was twice that of a related species, but other evidence including PEP carboxylase content and photorespiratory response to high O/sub 2/ did not confirm the presence of the C/sub 4/ photosynthesis.}
journal = {Aquat. Bot.; (Netherlands)}
volume = {3:4}
journal type = {AC}
place = {Netherlands}
year = {1977}
month = {Dec}
}