Neither mycorrhizal inoculation nor atmospheric CO2 concentration has strong effects on pea root production and root loss
• Root responses to elevated CO2 concentrations, where nutrient demand was expected to be higher than at ambient CO2 , and possible interactions with mycorrhizal symbionts are reported for pea (Pisum sativum). These are important below-ground components affecting carbon flow into the soil. • A vid...
| Veröffentlicht in: | The New phytologist. - 1979. - 149(2001), 2 vom: 20. Feb., Seite 283-290 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2001
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| Zugriff auf das übergeordnete Werk: | The New phytologist |
| Schlagworte: | Journal Article arbuscular mycorrhiza elevated carbon dioxide root length root loss root production turnover |
| Zusammenfassung: | • Root responses to elevated CO2 concentrations, where nutrient demand was expected to be higher than at ambient CO2 , and possible interactions with mycorrhizal symbionts are reported for pea (Pisum sativum). These are important below-ground components affecting carbon flow into the soil. • A video-minirhizotron system was used to study root growth in pot-grown mycorrhizal (inoculated with Glomus caledonium) and nonmycorrhizal pea plants at ambient or elevated CO2 concentrations over 9 wk. Analyses were made of root length changes, cohort size and survivorship. • Root length production at ambient, but not at elevated CO2 , was higher in nonmycorrhizal than in mycorrhizal plants from week 4-7. Root loss began at week 5, peaking 2 wk later with 40-50% loss of the root length produced by week 8. The decline in root production and increase in root loss coincided with the onset of flowering. • Neither mycorrhizal inoculation nor CO2 concentration has a strong effect on pea root production and root loss, although mycorrhizal infection has a greater effect than CO2 |
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| Beschreibung: | Date Revised 20.04.2021 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1046/j.1469-8137.2001.00013.x |