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Photosynthetic pathways of some aquatic plants

Journal Article:

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

Journal Article:

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}
}