Abstract
The uptake and metabolism of alpha-ketoglutarate-5-(14)C by peach, apple, and privet root tissues were studied over various time intervals. As much as 80% of the absorbed (14)C appeared as (14)CO(2) in 320 minutes in peach roots. Apple and privet roots were less effective in this conversion with the bulk of the (14)C found in the organic acid fraction. This indicates differences in organic acid metabolism among species of woody plants.The (14)C accumulated in malate earlier and in larger quantities than in citrate. Both glutamate and aspartate were labeled in 10 minutes and glutamate was labeled as early as 3 minutes. The labeling pattern does not clearly distinguish between the synthesis of glutamate by glutamic dehydrogenase or by transamination with oxaloacetate.The rapid metabolism of alpha-ketoglutarate to glutamate by the 3 species studied indicates the presence of enzyme systems important in amino acid synthesis in the roots of woody plants.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
