Biochemical and physiological characterization of higher plants with reduced photorespiration. Progress report, May 25, 1981-August 1, 1983

Technical Report · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5701776

Chollet, R

Based on work with Moricandia arvensis and Panicum milioides, it is clearly established that a C/sub 4/-like CO/sub 2/-concentrating system is not the only mechanism by which terrestrial higher plants have reduced photorespiration. Similarly, the lack of any significant involvement of PEP carboxylase in the fixation of either atmospheric or subatmospheric levels of CO/sub 2/ argues against some type of PEP carboxylase-mediated recycling of photorespiratory CO/sub 2/ in these species. Whether the apparent difference in glycine metabolism for M. arvensis relates directly to the reduction of photorespiration in this crucifer remains to be determined. Likewise, whether the Flaveria genus is presently evolving with respect to the pathway of photosynthetic carbon assimilation and whether a limited degree of C/sub 4/ photosynthesis is responsible for the lower GAMMA-values and reduced rates of photorespiration in the C/sub 3/-C/sub 4/ intermediate Flaveria species are intriguing, but as yet unanswered questions.

• Research Organization: Nebraska Univ., Lincoln (USA). Dept. of Agricultural Biochemistry
• DOE Contract Number: AC02-81ER10902
• OSTI ID: 5701776
• Report Number(s): DOE/ER/10902-3; ON: DE83016122
• Country of Publication: United States
• Language: English

Related Subjects

550500* -- Metabolism
59 BASIC BIOLOGICAL SCIENCES
BIOCHEMISTRY
BIOLOGICAL PATHWAYS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLASE
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
ENZYMES
LIGASES
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHYSIOLOGY
PLANTS
RESPIRATION
SYNTHESIS