ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Spontaneous and induced blocking and unblocking of phloem transport (1984)

GOESCHL, J. D. ; MAGNUSON, C. E. ; FARES, Y. ; [et al.]

Oxford, UK : Blackwell Publishing Ltd

Plant, cell & environment 7 (1984), S. 0

add to mindlist on the mindlist

Details

ISSN: 1365-3040

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Biology

Notes: Abstract Steady-state labelling with 11CO2 was used to observe the blocking of phloem transport, induced by chilling short regions of stems or petioles of velvetleaf (Abutilon theophrasti Medic.) or cotton (Gossipium hirsutum L.). The abruptness of these blockages was evidenced by sharp decreases in 11C activity below, and increases above a 2 to 3 cm region cooled from 28°C to 18 or 13°C for periods as short as 2 min. Abrupt unblocking of transport in velvetleaf occurred a few minutes after rewarming, as evidenced by a sharp rise and and overshoot in 11C activity. Recovery of transport in cotton was more prolonged and was marked by occasional spontaneous blocking and unblocking of transport at various points along the petiole or stem, not necessarily in the cooled region. Similar spontaneous events were often observed in undisturbed cotton plants, but only rarely in velvetleaf.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/1365-3040.ep11592141

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

An integrated tracer kinetics system for studying carbon uptake and allocation in plants using continuously produced11CO2 (1982)

Magnuson, C. E. ; Fares, Y. ; Goeschl, J. D. ; [et al.]

Springer

Radiation and environmental biophysics 21 (1982), S. 51-65

add to mindlist on the mindlist

Details

ISSN: 1432-2099

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Physics

Notes: Summary An integrated approach to study the effects of environmental factors on plants is described. The central theme of the system is the use of CO2 labelled with11C supplied continuously to the plant and following the emitted radiation in vivo in the leaf, the phloem and the various sinks. The system consists of six components and with minor changes can be used for other tracers such as13N for nitrogen fixation studies. Because of the short half life of the isotope, several experiments can be carried out on the same plant under the same environmental conditions without disturbing the plant. A host of ecologically, agriculturally and genetically important questions can be answered using this technique.