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Metabolite Signals Regulate Gene Expression and Source/Sink Relations in Cereal Seedlings [PDF]

Plant Physiology, 1994
Our knowledge of the genetic structures and regulatory mechanisms active during cereal seedling development has increased dramatically in recent years. For this reason, a more integrated view of the molecular aspects of seedling development and physiology is needed. This review presents the Carbon Metabolite Signal Hypothesis, which attempts to explain
Raymond L Rodríguez, Rodríguez R L
exaly   +3 more sources

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Regulation of source/sink relations by cytokinins

Plant Growth Regulation, 2000
Many physiological effects of cytokinins are well established and are known to be involved in various aspects of the plant life cycle. In contrast, little is known about how these effects are evoked at the molecular level. Since cytokinins have been shown to play a major role in the regulation of various processes associated with active growth and thus
T. Roitsch, R. Ehneß
openaire   +1 more source

Records of Source—Sink Relations by Means of Respiration Measurements

Journal of Experimental Botany, 1989
A method for recording respiration rates of attached single soybean pods is described. By means of such records source-sink relations can be observed over an extended period of time if photosynthesis of leaves is recorded simultaneously. It is shown that there are direct influences on respiration, such as changes in temperature and indirect effects ...
exaly   +2 more sources

Yield and source/sink relations of spring wheat cultivars

Field Crops Research, 1989
Abstract Spikelets from one side of the ear were completely removed at flowering (treated ear) to demonstrate the different responses of old and new spring wheat cultivars to source/sink manipulation. The concepts of potential ear productivity (doubled yield of the treated ear) and potential protein content in the remaining half of the ear were ...
E.I. Koshkin, V.V. Tararina
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Investigating Source-Sink Relations in Cassava by Reciprocal Grafts

Experimental Agriculture, 1982
SUMMARYThe relation between source potentials and sink capacities of four cassava (Manihot esculentaCrantz) varieties with different characteristics was investigated by means of reciprocal grafts. There were marked differences in the sink capacities (average stock effects) and source potentials (average scion effects) of the varieties.
M. T. Dahniya, C. O. Oputa, S. K. Hahn
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Investigations of Source-Sink Relations in Cassava Using Reciprocal Grafting

Experimental Agriculture, 1990
SUMMARYSource-sink relations in cassava were investigated following reciprocal grafting among three cultivars of different yield groups. Both rootstock and scion had significant effects on net assimilation rate and tuber yield, demonstrating that both sink capacity and source activity are important in achieving maximum tuber yield.
T. Ramanujam, S. P. Ghosh
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Engineering source-sink relations by prime editing confers heat-stress resilience in tomato and rice

Cell
A 2°C climate-warming scenario is expected to further exacerbate average crop losses by 3%-13%, yet few heat-tolerant staple-crop varieties are available toward meeting future food demands. Here, we develop high-efficiency prime-editing tools to precisely knockin a 10-bp heat-shock element (HSE) into promoters of cell-wall-invertase genes (CWINs) in ...
Shujia Li, Xiaozhen Huang, Yang Dandan   +2 more
exaly   +4 more sources

Source-Sink Relations: The Role of Sucrose

1996
We examine the idea that sucrose plays a central role in control of plant growth beyond that of substrate and product. The extended hypothesis we discuss is that sucrose can regulate source metabolism by down-regulating genes encoding proteins involved with photosynthesis, and sink metabolism by up-regulating genes encoding proteins involved with ...
C. J. Pollock, J. F. Farrar
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Sex-specific physiology and source-sink relations in the dioecious plant Silene latifolia

Oecologia, 1996
Differences in reproductive demands between the sexes of dioecious plants could cause divergence in physiology between the sexes. We found that the reproductive effort of female Silene latifolia plants increased to more than twice that of male plants or female plants that were prevented from setting fruit by lack of pollination after 4 weeks of ...
Marianne M, Laporte, Lynda F, Delph
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The Role of the Transport System in the Control of the Source–Sink Relations in Pinus sylvestris

Russian Journal of Plant Physiology, 2003
Morphophysiological correlations were studied in medium-aged (20- to 60-year-old) Scots pine trees under the northern taiga conditions. Under various ecological conditions, pine trees developed a well-balanced structure, with close linear relationships between needle and root weight and their cross-section areas in all components of the continuous ...
L. K. Kaipiainen, G. I. Sofronova
openaire   +1 more source