Evolution of C4 Photosynthesis in the Genus Flaveria: Establishment of a Photorespiratory CO2 Pump W
نویسندگان
چکیده
Stefanie Schulze,a,b Julia Mallmann,a Janet Burscheidt,a Maria Koczor,a Monika Streubel,a Hermann Bauwe,c Udo Gowik,a,b and Peter Westhoff a,b,1 a Heinrich-Heine-Universität, Department Biologie, 40225 Duesseldorf, Germany bCluster of Excellence on Plant Sciences “From Complex Traits towards Synthetic Modules,” 40225 Duesseldorf, Germany cUniversität Rostock, Abteilung Pflanzenphysiologie, 18059 Rostock, Germany
منابع مشابه
Initial Events during the Evolution of C4 Photosynthesis in C3 Species of Flaveria 1[W][OPEN]
The evolution of C4 photosynthesis in many taxa involves the establishment of a two-celled photorespiratory CO2 pump, termed C2 photosynthesis. How C3 species evolved C2 metabolism is critical to understanding the initial phases of C4 plant evolution. To evaluate early events in C4 evolution, we compared leaf anatomy, ultrastructure, and gas-exchange responses of closely related C3 and C2 speci...
متن کاملEvolution of C4 photosynthesis in the genus flaveria: establishment of a photorespiratory CO2 pump.
C4 photosynthesis is nature's most efficient answer to the dual activity of ribulose-1,5-bisphosphate carboxylase/oxygenase and the resulting loss of CO(2) by photorespiration. Gly decarboxylase (GDC) is the key component of photorespiratory CO(2) release in plants and is active in all photosynthetic tissues of C(3) plants, but only in the bundle sheath cells of C(4) plants. The restriction of ...
متن کاملInitial events during the evolution of C4 photosynthesis in C3 species of Flaveria.
The evolution of C4 photosynthesis in many taxa involves the establishment of a two-celled photorespiratory CO2 pump, termed C2 photosynthesis. How C3 species evolved C2 metabolism is critical to understanding the initial phases of C4 plant evolution. To evaluate early events in C4 evolution, we compared leaf anatomy, ultrastructure, and gas-exchange responses of closely related C3 and C2 speci...
متن کاملThe role of photorespiration during the evolution of C4 photosynthesis in the genus Flaveria
C4 photosynthesis represents a most remarkable case of convergent evolution of a complex trait, which includes the reprogramming of the expression patterns of thousands of genes. Anatomical, physiological, and phylogenetic and analyses as well as computational modeling indicate that the establishment of a photorespiratory carbon pump (termed C2 photosynthesis) is a prerequisite for the evolutio...
متن کاملC2 photosynthesis generates about 3-fold elevated leaf CO2 levels in the C3–C4 intermediate species Flaveria pubescens
Formation of a photorespiration-based CO2-concentrating mechanism in C3-C4 intermediate plants is seen as a prerequisite for the evolution of C4 photosynthesis, but it is not known how efficient this mechanism is. Here, using in vivo Rubisco carboxylation-to-oxygenation ratios as a proxy to assess relative intraplastidial CO2 levels is suggested. Such ratios were determined for the C3-C4 interm...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013