Work

Effects of Temperature and CO2 Enrichment on Carbon Translocation of Plants of the C4 Grass Species Echinochloa crus-galli (L.) Beauv. from Cool and Warm Environments

Year: 1984

Type: article

Abstract: Plants of Echinochloa crus-galli from Québec and Mississippi were grown under two thermoperiods (28 degrees C/22 degrees C, 21 degrees C/15 degrees C) and two atmospheric CO(2) concentrations (350 and 675 microliters per liter) to examine possible differential responses of northern and southern populations of this C(4) grass species. Translocation was monitored using radioactive tracing with short-lived (11)C. CO(2) enrichment induced a decrease in the size of the export pool in plants of both populations. Other parameters did not strongly respond to elevated CO(2). Low temperature reduced translocation drastically for plants from Mississippi in normal CO(2) concentration, but this reduction was ameliorated at high CO(2). Overall, plants from Québec had a higher (11)C activity in leaf phloem and a higher percentage of (11)C exported, whereas these northern plants had lower turnover time and smaller pool size than plants from the southern population.

Source: PLANT PHYSIOLOGY

DOI: 10.1104/pp.75.4.1054

Authors: Catherine Potvin, John D. Goeschl, Boyd R. Strain

Institutions: Duke University, Texas A&M University

Language: English

Topic: Plant responses to elevated CO2

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Climate action, Zero hunger

Open Access status: bronze

Funders: National Science Foundation, U.S. Department of Energy, Natural Sciences and Engineering Research Council of Canada