2024 The sink-source transition in leaves

The sink-source transition in leaves

Author: kyeu

August undefined, 2024

Webarundinacea) leaves at the time of transition from sink to source. The developing leaf contains a source, the exposed tip, and a sink, the growing basal portion. When the exposed tip of the developing blade is labelled with 14CO2, it exports photosynthates exclusively to sinks within the developing blade until the blade reaches 80% WebThe sink-source transition was measured on intact leaves and progressed basipetally at rates of up to 600 microns/h. The transition was most rapid on the largest sink leaves. However, leaf size was a poor indicator of the current position of the sink-source transition.

The Sink-Source Transition in Leaves Annual Review of …

WebMar 11, 2008 · The upper leaf sheath of rice (Oryza sativa L.) serves as a temporary starch sink before heading, subsequently becoming a carbon source tissue to the growing panicle at the post-heading stage. The time of sink–source transition in upper leaf sheaths is highly correlated to the panicle exsertion. Here, we found that the expression profiles of starch … WebApr 15, 2016 · As photosynthesis rates rise, leaves ultimately become net nutrient sources, supplying carbohydrates to the remainder of the plant. This sink-to-source transition is … greene king bottomless brunch

Rapid in situ 13C tracing of sucrose utilization in Arabidopsis sink ...

WebApr 13, 2024 · Sink/Source Balance of Leaves Influences Amino Acid Pools and Their Associated Metabolic Fluxes in Winter Oilseed Rape ( Brassica napus L.) Authors Younès Dellero 1 , Maud Heuillet 2 3 , Nathalie Marnet 4 , Floriant Bellvert 2 3 , Pierre Millard 2 , Alain Bouchereau 1 4 Affiliations WebThe source-sink relationship is governed by hormonal balance and the demand and supply within the bush. Auxin in the shoot tips, gibberellins in the maintenance leaves, and the … WebThe sink-source transition in leaves [1989] Turgeon, R. (Cornell University, Ithaca, NY); Access the full text NOT AVAILABLE; Lookup at Google Scholar From the journal Annual … greene king card balance

The Sink-Source Transition in Leaves Annual Review of …

Molecular regulation of sink–source transition in rice leaf sheaths ...

Webwhere sink and source are simultaneously located in the same organ with the emerged leaf tip already mature and photosynthetically active while the … WebMay 9, 2003 · The sink–source transition occurred during leaf area expansion in P. vulgaris. These trends were the same as those reported for many dicot herbs (Turgeon 1989). On the other hand, in Q. glauca, the daily C exchange rates were negative until FLE and further increased thereafter for about 10 d. The sink–source transition occurred 7 d after FLE. greene king caloriesWebThe biological functions of plant TOR remain to be elucidated, however, and much less is known about the roles of TOR at later developmental stages (such as in mature leaves). … flüge eurowings dortmund mallorca

"WebHowever, in older, larger plants (approximately 40 d post-sowing), the sink-source transition occurred in leaves up to 16 cm long and involved both major and minor vein classes as revealed by GFP ... " - The sink-source transition in leaves

The sink-source transition in leaves

WebJan 9, 2000 · Sink-to-source transition occurs at a particular leaf stage in which a breakpoint corresponding to an accumulation of carbohydrates and a depletion of both organic and inorganic nitrogen is observed. WebLeaves undergo a sink–source transition during which a physiological change occurs from carbon import to export. In sink leaves, biolistic bombardment of plasmids encoding GFP-fusion proteins demonstrated that proteins with an M r up to 50 kDa could move freely through plasmodesmata.

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WebOct 18, 2024 · We apply these analyses to the sink to source transition continuum of leaves from single A. thaliana rosettes and characterize the associated relative changes of metabolite pools, as well as previously hidden changes of … WebE SOURCE–SINK TRANSITION. Source–sink relationships vary among different plant species because of their different growth habits, growth rates and generation times. ... Once the new leaves unfold from the bud, the sink capacity of the bud gradually declines, culminating into a banjhi shoot unless harvested. Thus the process of plucking ...

Web* The sink-source transition of developing Nicotiana tabacum (tobacco) leaves was studied here using chlorophyll fluorescence imaging. * In accordance with leaf development, the quantum efficiency of PSII, showed a steep gradient across the leaf with increasing values towards the tip. WebAbstract Abstract We studied the anatomical and ultrastructural changes accompanying sink-to-source transition in developing maize (Zea mays L. cv. W273) leaves, in which sink, transition, and source regions had been identified by whole-leaf autoradiography.

WebOct 10, 2012 · Two photosynthetic ‘source’ leaves per shoot on the remaining 8–10 shoots were treated with 14 CO 2 to identify, by autoradiography, the leaf position completing the carbohydrate sink-to-source transition. There was a clear association between the mean modal leaf position for maximum severity of powdery mildew (position 3·7 for 18°C ... WebSep 1, 2000 · This provided the framework for the analysis of changes in assimilation, transpiration and dark respiration, chlorophyll, protein, carbohydrate, and amino acid concentrations, and of activities of sink–source‐related enzymes at the leaf tip and base during leaf development in well‐watered and drought‐stressed plants.

WebOct 15, 2004 · Profiles of small polar metabolites from aspen ( Populus tremuloides Michx.) leaves spanning the sink-to-source transition zone were compared. Approximately 25% of 250 to 300 routinely resolved peaks were identified, with carbohydrates, organic acids, and amino acids being most abundant.

greene king calories menuWebThe sink-source transition was measured on intact leaves and progressed basipetally at rates of up to 600 μm/h. The transition was most rapid on the largest sink leaves. … flüge frankfurt bangkok thai airwaysWebSink-source transition in tobacco leaves visualized using chlorophyll fluorescence imaging Sink-source transition in tobacco leaves visualized using chlorophyll fluorescence … greene king bourton on the waterWebAbstract Abstract We studied the anatomical and ultrastructural changes accompanying sink-to-source transition in developing maize (Zea mays L. cv. W273) leaves, in which … fluge eyewearWebDec 21, 2001 · The sink–source transition of developing Nicotiana tabacum (tobacco) leaves was studied here using chlorophyll fluorescence imaging. In accordance with leaf … greene king brewers selectionWebThe sink-to-source transition process then occurs until the leaf has reached LPI 1.8 and the transition of the leaflets to completely source state is completed by LPI 2.0. The sink to source transition in the pea plants takes place between LPI 0 and LPI 2.0 which represents 2.0 plastochrons or 4.68 days. greene king burton on trent officeWebsink to source transition. Different leaves were fed with 14CO2 in order to determine which ones were the sources of carbon for the developing leaf blade. Thus, by visualizing carbon … greene king bury st edmunds brewery tour