Tonoplast


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Related to Tonoplast: plasmodesmata

tonoplast

[′tän·ə‚plast]
(botany)
The membrane surrounding a plant-cell vacuole.

Tonoplast

 

the membrane that surrounds a cell vacuole, similar in structure to the membranes of the endoplasmic network. Tonoplasts have selective permeability and the capacity for active transport of ions.

References in periodicals archive ?
Modulation by Cytosolic Components of Proton Pump Activities in Plasma Membrane and Tonoplast from Cucumis sativus Roots During Salt Stress.
5-35% of the total tonoplast protein in different species [4,26,43].
Arabidopsis V-ATPase activity at the tonoplast is required for efcient nutrient storage but not for sodium accumulation.
Proteomic analysis of plasma membrane and tonoplast from the leaves of mangrove plant Avicennia officinalis.
Abbreviations: AQP, aquaporin; ar/R, aromatic-arginine selectivity filter; Arg, arginine; ATP, adenosine triphosphate; BIB, big brain; Eglp, entomoglyceroporin; Ga, billions of years ago; GIP, GlpF-like intrinsic protein; Glp, aquaglyceroporin; HGT, horizontal gene transfer; HIP, hybrid intrinsic protein; His, histidine; Leu, leucine; LHIP, Lygus hesperus integral protein-like channel; NIP, plant nodulin 26-like integral protein; NPA, asparagine-proline-alanine; NPC, asparagine-proline-cysteine; PIP, plasma membrane intrinsic protein; RPIP, Rhodnius prolixus integral protein-like channel; SIP, small basic intrinsic protein; TIP, plant tonoplast intrinsic protein; TMD, transmembrane domain; Trp, tryptophan; XIP, X intrinsic protein; WGD, whole genome duplication.
Luttge U, Smith J (1984) Primary active transport of protons by ATP-ases at the tonoplast of plant cells and its possible function in ecological adaptations.
Thimann (1987) noted that cytokinins delay the senescence process probably by maintaining the integrity of the tonoplast membrane.
In terms of Na+ influx and K+ efflux from vacuoles, some studies reported that over-expression of tonoplast sodium/proton exchangers (NHXs) improved salt tolerance in Beta vulgaris (Blumwald and Poole, 1987; Xia et al.
BLAST analysis suggests a connection between TgAQP and plant tonoplast intrinsic proteins (TIPs) (the BLAST ranking based on the Expect (E) value favors TIP by four and eight orders of magnitude over prototypical AQPs from mammals and bacteria; see Pavlovic-Djuranovic et al.
Indolecetic and humic acid endure lateral root development through a concerted plasma lemma and tonoplast H+ pumps activation.
Translocation and storage of heavy metals in tonoplast located vacuole is an important phenomenon, after entering the heavy metals to the roots.