Ecological effects of plant root exudates

Abstract

Abstract: Root exudates, which can be called as a joint name of organic chemicals in rhizospheric environment released by living and undisturbed root system in certain stage of growth of plants, play very important roles in plants to adapt and resistant to environment stresses actively:(1)By the way of allelopathy, root exudates could affect the growth of rhizospheric microorganisms and other plants, and improve the biological factors of ecological environment;(2)By dissolving, chelating, transferring, and activating mineral elements of the soil, root exudates could not only enhance the validity of the mineral elements under circumstances of inanition, but also depress the activity of mineral contaminations in rhizosphere to reduce ion absorption in face of heavy metal stresses. Root exudates act as the information transmitter in the interactions between plants and their environment.

Key words: Distributed hydrological model, Forested watershed, Rainfall-runoff process, Scaling

CLC Number:

Q944.54

SHI Gangrong . Ecological effects of plant root exudates[J]. cje, 2004, (1): 97-101.

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