The Arabidopsis DSO/ABCG11 Transporter Affects Cutin Metabolism in Reproductive Organs and Suberin in Roots

Panikashvili, David; Shi, Jian; Bocobza, Samuel; Franke, Rochus; Schreiber, Lukas; Aharoni, Asaph

doi:10.1093/mp/ssp103

Cited by 162 publications

(147 citation statements)

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“…The results indicated that, instead of an overexpression, we obtained cosuppression in the transgenic plants. This has been reported previously for AtABCG11, where overexpression of this gene resulted in a cosuppression (Panikashvili et al, 2007(Panikashvili et al, , 2010.…”

Section: Map-based Cloning Of Osabcg26supporting

confidence: 84%

“…Error bars indicate SD (n = 5). URWC1, Unknown rice wax constituent1; *, P , 0.05; **, P , 0.01. pattern in many vegetative and reproductive organs (Bird et al, 2007;Panikashvili et al, 2007Panikashvili et al, , 2010, the expression of OsABCG26 seems to be nearly strictly in reproductive organs, including anther and the pistil (Fig. 7).…”

Section: Map-based Cloning Of Osabcg26mentioning

confidence: 97%

“…Phylogenetic analysis (Verrier et al, 2008) showed that its closest protein is AtABCG11, which was shown to be involved in transport of cuticular lipids in both vegetative and reproductive organs (Bird et al, 2007;Panikashvili et al, 2007Panikashvili et al, , 2010. Unlike its ortholog in Arabidopsis that shows a broad expression Figure 4.…”

Section: Map-based Cloning Of Osabcg26mentioning

confidence: 99%

“…7). In addition, atabcg11 shows defective cuticular lipid metabolism in not only vegetative tissues, such as leaf and stem (Panikashvili et al, 2007), but also, reproductive organs, such as flowers and seeds (Panikashvili et al, 2010); osabcg26 only shows defective anther cuticle and pollen exine (Figs. 2M, 3, P and R, and 4; Supplemental Fig.…”

Section: Map-based Cloning Of Osabcg26mentioning

confidence: 99%

“…Some plant ABCG proteins have been reported to contribute to the synthesis of extracellular barriers. In Arabidopsis, ABCG11 (Cuticular Defect and Organ Fusion1/DESPERADO/White-Brown Complex11; Bird et al, 2007;Panikashvili et al, 2007Panikashvili et al, , 2010, ABCG12 (Eceriferum5/WBC12; Pighin et al, 2004), ABCG13 (Panikashvili et al, 2010), ABCG29 (Alejandro et al, 2012), ABCG32 (Bessire et al, 2011), and ABCG26 (WBC27; Xu et al, 2010;Quilichini et al, 2010Quilichini et al, , 2014Choi et al, 2011;Dou et al, 2011) have been shown to be involved in transport of lipidic compounds. Notably, it has been reported that these ABCG proteins have a broad substrates spectrum (for example, ABCG11 transports both cutin and wax monomers, and ABCG13 and ABCG32 mainly transport cutin monomers, whereas ABCG12 mainly transports wax precursors, and ABCG29 mainly transports monolignol).…”

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Two ATP Binding Cassette G (ABCG) Transporters, OsABCG26 and OsABCG15, Collaboratively Regulate Rice Male Reproduction

et al. 2015

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Male reproduction in higher plants requires the support of various metabolites, including lipid molecules produced in the innermost anther wall layer (the tapetum), but how the molecules are allocated among different anther tissues remains largely unknown. Previously, rice (Oryza sativa) ATP binding cassette G15 (ABCG15) and its Arabidopsis (Arabidopsis thaliana) ortholog were shown to be required for pollen exine formation. Here, we report the significant role of OsABCG26 in regulating the development of anther cuticle and pollen exine together with OsABCG15 in rice. Cytological and chemical analyses indicate that osabcg26 shows reduced transport of lipidic molecules from tapetal cells for anther cuticle development. Supportively, the localization of OsABCG26 is on the plasma membrane of the anther wall layers. By contrast, OsABCG15 is polarly localized in tapetal plasma membrane facing anther locules. osabcg26 osabcg15 double mutant displays an almost complete absence of anther cuticle and pollen exine, similar to that of osabcg15 single mutant. Taken together, we propose that OsABCG26 and OsABCG15 collaboratively regulate rice male reproduction: OsABCG26 is mainly responsible for the transport of lipidic molecules from tapetal cells to anther wall layers, whereas OsABCG15 mainly is responsible for the export of lipidic molecules from the tapetal cells to anther locules for pollen exine development.

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Section: Map-based Cloning Of Osabcg26supporting

confidence: 84%

Section: Map-based Cloning Of Osabcg26mentioning

confidence: 97%

Section: Map-based Cloning Of Osabcg26mentioning

confidence: 99%

Section: Map-based Cloning Of Osabcg26mentioning

confidence: 99%

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Two ATP Binding Cassette G (ABCG) Transporters, OsABCG26 and OsABCG15, Collaboratively Regulate Rice Male Reproduction

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Cutin and Suberin Polyesters

Li‐Beisson

Verdier

Lin

et al. 2016

Encyclopedia of Life Sciences

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Cutin and suberin are cell wall‐associated glycerolipid polymers that are specific to plants. Cutin forms the framework of the cuticle sealing the aerial epidermis, while suberin is present in the periderm of barks and underground organs. Suberised walls are also found in the root endodermis. Barriers based on cutin and suberin restrict the transport of water and solutes across cell walls and limit pathogen invasions. Chemical analysis shows that both polymers are polyesters composed mostly of fatty hydroxyacids, diacids and epoxyacids esterified to each other and to glycerol. Suberin, whose best‐known form is cork, usually differs from cutin (which has C16 and C18 fatty acids) by a higher content of C20–C24 aliphatics and aromatics. In the last 10 years, the identification of mutants of Arabidopsis or other model plants affected in cutin and/or suberin content has allowed the construction of a more complete picture of the polyester biosynthesis pathways, which currently include acyltransferases with unique specificities, fatty acid hydroxylases, acyl‐CoA synthetases, fatty acid elongases, fatty acyl‐CoA reductases, feruloyl transferases, ABC transporters and extracellular transacylases. Key Concepts The epidermal cells of plant aerial organs and periderm/endoderm cells synthesise the protective cell wall lipid polymers cutin and suberin respectively. Cutin and suberin are both polyesters containing glycerol and oxygenated fatty acids. Cutin structure is not completely understood and suberin structure remains controversial. Oxygenated fatty acid monomers are produced by fatty acid oxidases of the cytochrome P450 superfamily. Acylation of oxygenated fatty acids to glycerol is catalysed by special glycerol‐3‐phosphate acyltransferases. Cutin acylglycerol building blocks are exported to the cell wall and polymerised by extracellular transacylases. How suberin precursors are assembled is still unknown.

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Endodermis and Exodermis in Roots

Schreiber

Franke

2011

Encyclopedia of Life Sciences

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Roots of terrestrial plants are designed to take up water and nutrients. At the same time, uptake of unwanted compounds, for example toxic, and infection by soil borne pathogens must be avoided. Specific unicellular tissues, the endodermis and the exodermis, allow roots to establish and maintain this selectivity. The endodermis represents an unicellular cell layer separating the central cylinder of the root from the cortex. The exodermis represents an unicellular cell layer located at the outer surface of the root directly below the root epidermis. Both tissues are characterised by specific cell wall modifications. In early developmental stages the anticlinal radial walls exhibit Casparian bands, composed of the polymers suberin and lignin. In a subsequent developmental state a suberin lamella is deposited on the inner surface of endo‐ and exodermal cell walls. These apoplastic barriers, mainly composed of suberin, significantly affect radial uptake of water and dissolved nutrients and radial loss of oxygen. Key Concepts: Casparian bands, composed of lignin and suberin, form characteristic cell wall modifications in radial walls of endodermal and exodermal cells. Suberin lamellae are deposited onto the inner surface of endodermal and exodermal cell walls. Apoplastic barriers in roots are established by the deposition of suberin into and onto the cell wall. Suberised apoplastic barriers in roots help to establish root selectivity in nutrient uptake. The endodermis, forming an ‘inner’ apoplastic barrier in the root, is important in preventing nutrients actively concentrated in the xylem from passively diffusing back to the soil. The exodermis, forming an ‘outer’ apoplastic barrier at the root surface, mainly establishes the root/soil interface between the root and the soil environment surrounding the root. As an adaptation to various environmental stress factors (e.g. drought, salt, heavy metal stress, oxygen deficiency, etc.) suberisation of apoplastic barriers is significantly modified. Fatty acid elongases and cytochrome P450 hydroxylases represent important key enzymes in suberin biosynthesis.

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The Arabidopsis DSO/ABCG11 Transporter Affects Cutin Metabolism in Reproductive Organs and Suberin in Roots

Cited by 162 publications

References 65 publications

Two ATP Binding Cassette G (ABCG) Transporters, OsABCG26 and OsABCG15, Collaboratively Regulate Rice Male Reproduction

Two ATP Binding Cassette G (ABCG) Transporters, OsABCG26 and OsABCG15, Collaboratively Regulate Rice Male Reproduction

Cutin and Suberin Polyesters

Endodermis and Exodermis in Roots

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