Universität zu Köln

Schlueter, Urte, Braeutigam, Andrea, Gowik, Udo ORCID: 0000-0002-8986-7318, Melzer, Michael ORCID: 0000-0002-5213-4030, Christin, Pascal-Antoine, Kurz, Samantha, Mettler-Altmann, Tabea and Weber, Andreas P. M. (2017). Photosynthesis in C-3-C-4 intermediate Moricandia species. J. Exp. Bot., 68 (2). S. 191 - 207. OXFORD: OXFORD UNIV PRESS. ISSN 1460-2431

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Abstract

Evolution of C-4 photosynthesis is not distributed evenly in the plant kingdom. Particularly interesting is the situation in the Brassicaceae, because the family contains no C-4 species, but several C-3-C-4 intermediates, mainly in the genus Moricandia. Investigation of leaf anatomy, gas exchange parameters, the metabolome, and the transcriptome of two C-3-C-4 intermediate Moricandia species, M. arvensis and M. suffruticosa, and their close C-3 relative M. moricandioides enabled us to unravel the specific C-3-C-4 characteristics in these Moricandia lines. Reduced CO2 compensation points in these lines were accompanied by anatomical adjustments, such as centripetal concentration of organelles in the bundle sheath, and metabolic adjustments, such as the balancing of C and N metabolism between mesophyll and bundle sheath cells by multiple pathways. Evolution from C-3 to C-3-C-4 intermediacy was probably facilitated first by loss of one copy of the glycine decarboxylase P-protein, followed by dominant activity of a bundle sheath-specific element in its promoter. In contrast to recent models, installation of the C-3-C-4 pathway was not accompanied by enhanced activity of the C-4 cycle. Our results indicate that metabolic limitations connected to N metabolism or anatomical limitations connected to vein density could have constrained evolution of C-4 in Moricandia.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schlueter, Urte UNSPECIFIED UNSPECIFIED UNSPECIFIED Braeutigam, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED Gowik, Udo UNSPECIFIED orcid.org/0000-0002-8986-7318 UNSPECIFIED Melzer, Michael UNSPECIFIED orcid.org/0000-0002-5213-4030 UNSPECIFIED Christin, Pascal-Antoine UNSPECIFIED UNSPECIFIED UNSPECIFIED Kurz, Samantha UNSPECIFIED UNSPECIFIED UNSPECIFIED Mettler-Altmann, Tabea UNSPECIFIED UNSPECIFIED UNSPECIFIED Weber, Andreas P. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-243607
DOI:	10.1093/jxb/erw391
Journal or Publication Title:	J. Exp. Bot.
Volume:	68
Number:	2
Page Range:	S. 191 - 207
Date:	2017
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1460-2431
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NITROGEN-USE EFFICIENCY; C-4 PHOTOSYNTHESIS; GLYCINE DECARBOXYLASE; GENUS FLAVERIA; BUNDLE-SHEATH; LEAF ANATOMY; BIOCHEMICAL-CHARACTERIZATION; PHOTORESPIRATORY ENZYMES; CO2 EXCHANGE; EVOLUTION Multiple languages Plant Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24360