Hachi's posts
Posted in it's literally just biology
Posted 5 years ago
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Symplastic domains - groups of cells and tissues connected by plasmodesmata. Proteins and RNAs coordinate their development
Symplastic domains - groups of cells and tissues connected by plasmodesmata. Proteins and RNAs coordinate their development
Posted in it's literally just biology
Posted 5 years ago
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Plant cells regulate pore size of plasmodesmata. Viruses make viral movement proteins that can manipulate these regulators to allow viral RNA to pass between plant cells
Plant cells regulate pore size of plasmodesmata. Viruses make viral movement proteins that can manipulate these regulators to allow viral RNA to pass between plant cells
Posted in it's literally just biology
Posted 5 years ago
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Close or are eliminated during differentiation (eg. when leaf matures from sink to source)
Close or are eliminated during differentiation (eg. when leaf matures from sink to source)
Posted in it's literally just biology
Posted 5 years ago
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Plasmodesmata are dynamic - open/close in response to turgor pressure, cytosolic Ca2+ levels, or cytosolic pH
Plasmodesmata are dynamic - open/close in response to turgor pressure, cytosolic Ca2+ levels, or cytosolic pH
Posted in it's literally just biology
Posted 5 years ago
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Symplast is living and governs changes in plant transport processes
Symplast is living and governs changes in plant transport processes
Posted in it's literally just biology
Posted 5 years ago
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Self-thinning - when sinks > sources, plant aborts some flowers, seeds, or fruits
Self-thinning - when sinks > sources, plant aborts some flowers, seeds, or fruits
Posted in it's literally just biology
Posted 5 years ago
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Pressure is relieved at the sink as sugar unloads and water is lost
Pressure is relieved at the sink as sugar unloads and water is lost
Posted in it's literally just biology
Posted 5 years ago
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Sugar concentration is higher at source than at sink, water moves in by osmosis and builds positive pressure at source
Sugar concentration is higher at source than at sink, water moves in by osmosis and builds positive pressure at source
Posted in it's literally just biology
Posted 5 years ago
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In angiosperms, translocation is driven by positive pressure (pressure flow)
In angiosperms, translocation is driven by positive pressure (pressure flow)
Posted in it's literally just biology
Posted 5 years ago
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Concentration of free sugar is always lower in sink than in sieve tube → unloads by diffusion, water follows by osmosis
Concentration of free sugar is always lower in sink than in sieve tube → unloads by diffusion, water follows by osmosis
Posted in it's literally just biology
Posted 5 years ago
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Sugar movement into phloem requires active transport (H+/sucrose cotransporter) b/c sucrose is more concentrated in sieve-tube elements and companion cells than in mesophyll
Sugar movement into phloem requires active transport (H+/sucrose cotransporter) b/c sucrose is more concentrated in sieve-tube elements and companion cells than in mesophyll
Posted in it's literally just biology
Posted 5 years ago
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Walls of companion cells have ingrowths to enhance transfer between apoplast and symplast
Walls of companion cells have ingrowths to enhance transfer between apoplast and symplast
Posted in it's literally just biology
Posted 5 years ago
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Sugar is loaded from mesophyll cells into sieve-tube elements, then exported to sinks
Sugar is loaded from mesophyll cells into sieve-tube elements, then exported to sinks
Posted in it's literally just biology
Posted 5 years ago
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Sinks receive sugar from nearby sources. Direction of transport in a sieve tube depends on location of source and sink connected by that tube
Sinks receive sugar from nearby sources. Direction of transport in a sieve tube depends on location of source and sink connected by that tube