2004
DOI: 10.1104/pp.104.048231
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Energization of Transport Processes in Plants. Roles of the Plasma Membrane H+-ATPase

Abstract: Much has been learned about the energization of nutrient transport since Hoagland in 1944 gave his famous series of lectures on plant nutrition. Already at that time it was speculated that energy for transport of solutes into cells was provided by compounds containing energy-rich phosphate bonds (Hoagland, 1944). We now know that ATP-consuming proton pumps drive nutrient transport at several entry points in the plant body. In this Update, we will focus on those entry points within the plant body where nutrient… Show more

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Cited by 298 publications
(191 citation statements)
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“…This is reminiscent of the P 3A -type H + ATPase AtAHA2, in which the autoinhibitory activity of the C-terminus is relieved by phosphorylation that allows a subsequent interaction with a 14-3-3 protein [78]. A putative 14-3-3 binding motif can be identified in the C-terminal cytosolic domain of AtHMA3 in silico (T. Hoffmann and U. Krämer, unpublished data).…”
Section: Putative Regulatory Domains In Transition Metal Transportersmentioning
confidence: 99%
“…This is reminiscent of the P 3A -type H + ATPase AtAHA2, in which the autoinhibitory activity of the C-terminus is relieved by phosphorylation that allows a subsequent interaction with a 14-3-3 protein [78]. A putative 14-3-3 binding motif can be identified in the C-terminal cytosolic domain of AtHMA3 in silico (T. Hoffmann and U. Krämer, unpublished data).…”
Section: Putative Regulatory Domains In Transition Metal Transportersmentioning
confidence: 99%
“…In addition to metabolites such as sugars, minerals and salts, such as phosphate, also can use the phloem pathway to be redistributed from old source leaves towards young and expanding sink leaves (Sondergaard et al 2004). Ren et al (2005) proposed a model showing redistribution of cytosolic Na ϩ from mesophyll cells to phloem as an adaptation to maintain cellular K ϩ nutrient status.…”
Section: Excess Cytosolic Namentioning
confidence: 99%
“…In one, photoassimilate enters the apoplast and is subsequently loaded into the phloem by specific transport proteins (3,7). The second mechanism appears to be entirely symplastic (by plasmodesmata) (4)(5)(6).…”
mentioning
confidence: 99%