Surplus Carbon Drives Allocation and Plant-Soil Interactions.
Trends Ecol Evol
; 35(12): 1110-1118, 2020 12.
Article
em En
| MEDLINE
| ID: mdl-32928565
ABSTRACT
Plant growth is usually constrained by the availability of nutrients, water, or temperature, rather than photosynthetic carbon (C) fixation. Under these conditions leaf growth is curtailed more than C fixation, and the surplus photosynthates are exported from the leaf. In plants limited by nitrogen (N) or phosphorus (P), photosynthates are converted into sugars and secondary metabolites. Some surplus C is translocated to roots and released as root exudates or transferred to root-associated microorganisms. Surplus C is also produced under low moisture availability, low temperature, and high atmospheric CO2 concentrations, with similar below-ground effects. Many interactions among above- and below-ground ecosystem components can be parsimoniously explained by the production, distribution, and release of surplus C under conditions that limit plant growth.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Solo
/
Carbono
Idioma:
En
Revista:
Trends Ecol Evol
Ano de publicação:
2020
Tipo de documento:
Article