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Authors Fisher, DD; Schenk, HJ; Thorsch, JA; Ferren, WR
Author Full Name Fisher, DD; Schenk, HJ; Thorsch, JA; Ferren, WR
Title Leaf anatomy and subgeneric affiliations of C-3 and C-4 species of Suaeda (Chenopodiaceae) in North America
Source AMERICAN JOURNAL OF BOTANY
Language English
Document Type Article
Author Keywords C-3/C-4 photosynthesis; Chenopodiaceae, Chenopodina; infrageneric taxonomy; leaf anatomy; Limbogermen; Suaeda
Keywords Plus PHOTOSYNTHETIC PATHWAYS; C-13/C-12 RATIOS; ARARAT PLAIN; CENTRAL-ASIA; C4 PLANTS; ARID ZONE; HALOPHYTES; METABOLISM; SALINITY; PATTERNS
Abstract The halophytic genus Suaeda (Chenopodiaceae) includes species with the C-3 and C-4 photosynthetic pathways. North American species of this genus were investigated to determine whether C-3 and C-4 leaf anatomy are consistent within the two sections of Suaeda, Chenopodina and Limbogermen, present on this continent. All species from section Chenopodina were found to possess C-3 anatomy, whereas all species from section Limbogermen were found to he C-4 species, Characteristics of leaf anatomy and chloroplast ultrastructure are similar to those reported from C-3 and C-4 species. respectively, from the Eastern Hemisphere. All species from section Limbogermen have the suaedoid type of leaf anatomy, characterized by differentiation of the mesophyll into palisade parenchyma and a chlorenchymatous sheath surrounding central water-storage tissue, as well as leaf carbon isotope ratios (delta(13)C) of above -20. All species from section Chenopodina have austrobassioid leaf anatomy without a chlorenchymatous sheath and delta(13)C values of below -20. According to our literature review, the photosynthetic pathway has now been reported for about half (44) of the Suaeda species worldwide. The C-3 and C-4 photosynthetic syndromes are with few exceptions distributed along sectional or subsectional lines. These findings throw new light on the infrageneric taxonomy of this genus.
Author Address UNIV CALIF SANTA BARBARA,DEPT ECOL EVOLUT & MARINE BIOL,SANTA BARBARA,CA 93106
ResearcherID Number Schenk, H. Jochen/B-9651-2009
ORCID Number Schenk, H. Jochen/0000-0001-6261-2780
Times Cited 26
Total Times Cited Count (WoS, BCI, and CSCD) 29
Publisher BOTANICAL SOC AMER INC
Publisher City COLUMBUS
Publisher Address OHIO STATE UNIV-DEPT BOTANY 1735 NEIL AVE, COLUMBUS, OH 43210
ISSN 0002-9122
29-Character Source Abbreviation AM J BOT
ISO Source Abbreviation Am. J. Bot.
Publication Date SEP
Year Published 1997
Volume 84
Issue 9
Beginning Page 1198
Ending Page 1210
Digital Object Identifier (DOI) 10.2307/2446043
Page Count 13
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number XZ008
Unique Article Identifier WOS:A1997XZ00800004
Plants associated with this reference

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