Translocation in the nonpolytrichaceous moss grimmia laevigata

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · American Journal of Botany; (USA)

DOI:https://doi.org/10.2307/2444440· OSTI ID:6993059

Alpert, P ^[1]

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1. Univ. of Massachusetts, Amherst (USA)

A superficially rhizomatous habit suggested that the moss Grimmia laevigata might function as a clonal, rhizomatous plant and translocate photoassimilates to below ground organs, even though the species is outside the order Polytrichales, which includes the only mosses known to posses sieve cells. Labelling with {sup 14}CO{sub 2} indicated that at least 10% of newly assimilated carbon was translocated out of leafy shoot portions within 26 hr. Of this carbon, approximately 75% was apparently moved into leafless, basal shoot portions and 25% into below ground stems. Infrared gas analysis of net CO{sup 2} flux was used to check that labelling gave a realistic measure of photosynthesis. Physiological integration and clonal spread may account for the unusual ability of this moss to colonize extremely xeric microsites.

• OSTI ID: 6993059
• Journal Information: American Journal of Botany; (USA), Journal Name: American Journal of Botany; (USA) Vol. 76:10; ISSN 0002-9122; ISSN AJBOA
• Country of Publication: United States
• Language: English

Related Subjects

551001* -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
BRYOPHYTA
CARBON
CARBON 14 COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
GROWTH
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
MOSSES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHYSIOLOGY
PLANT GROWTH
PLANTS
SYNTHESIS
TRACER TECHNIQUES
TRANSLOCATION