Degree of pectin methyl esterification in endosperm cell walls is involved in embryo bending in Arabidopsis thaliana

Cruz-Valderrama, José Erik; Jiménez‐Durán, Karina; Zúñiga-Sánchez, Esther; Salazar-Iribe, Alexis; Márquez‐Guzmán, Judith; Gamboa‐deBuen, Alicia

doi:10.1016/j.bbrc.2017.11.077

Cited by 10 publications

(8 citation statements)

References 21 publications

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“…In general, changes in the expression patterns of DUF642 genes can be related directly to PME activity [13,15,16,19]. The leaves of Arabidopsis lines overexpressing AHDGR2 had low PME activity, and this was reflected in alterations in the pattern of de-methyl-esterified HGs in the cell walls [16,19,32].…”

Section: Function Of Duf642 Proteins In Plant Developmentmentioning

confidence: 99%

“…In the bdx-1 mutant, a lower signal of de-methyl-esterified HGs compared with the wild-type was detected in this region. Alterations in the degree of esterification can cause greater rigidity of the cell wall of endosperm cells, thereby generating a physical restriction in the development of the embryo and compromising the subsequent survival of the seedling [32].…”

Section: Function Of Duf642 Proteins In Plant Developmentmentioning

confidence: 99%

“…Throughout the development of the anther there is almost no accumulation of auxins. The Arabidopsis transgenic plants were obtained as described in Cruz-Valderrama et al [32]. Sections: 1–2 μm.…”

Section: Figurementioning

confidence: 99%

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Overview of the Role of Cell Wall DUF642 Proteins in Plant Development

Cruz-Valderrama

Gómez-Maqueo

Salazar-Iribe

et al. 2019

IJMS

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The DUF642 protein family is found exclusively in spermatophytes and is represented by 10 genes in Arabidopsis and in most of the 24 plant species analyzed to date. Even though the primary structure of DUF642 proteins is highly conserved in different spermatophyte species, studies of their expression patterns in Arabidopsis have shown that the spatial-temporal expression pattern for each gene is specific and consistent with the phenotypes of the mutant plants studied so far. Additionally, the regulation of DUF642 gene expression by hormones and environmental stimuli was specific for each gene, showing both up- and down-regulation depending of the analyzed tissue and the intensity or duration of the stimuli. These expression patterns suggest that the DUF642 genes are involved throughout the development and growth of plants. In general, changes in the expression patterns of DUF642 genes can be related to changes in pectin methyl esterase activity and/or to changes in the degree of methyl-esterified homogalacturonans during plant development in different cell types. Thus, the regulation of pectin methyl esterases mediated by DUF642 genes could contribute to the regulation of the cell wall properties during plant growth.

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Section: Function Of Duf642 Proteins In Plant Developmentmentioning

confidence: 99%

Section: Function Of Duf642 Proteins In Plant Developmentmentioning

confidence: 99%

See 1 more Smart Citation

Overview of the Role of Cell Wall DUF642 Proteins in Plant Development

Cruz-Valderrama

Gómez-Maqueo

Salazar-Iribe

et al. 2019

IJMS

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“…Whereas at torpedo stage, both high- and low- methylesterified HG were barely detectable, in bent cotyledon stage embryos, low- and de-esterified HG epitopes were strongly labeled in the endosperm. A low degree of pectin methylesterification has been hypothesized to contribute to endosperm weakening, which as a result facilitates embryo expansion [33]. Together these spatiotemporal variations in relative abundance and structure of cell wall polysaccharides suggest a distinct developmental control of cell wall characteristics in embryo and endosperm from fertilization to seed desiccation.…”

Section: Localized Accumulation and Remodeling Of Cell Wall Polysamentioning

confidence: 99%

“…This would appear to be due to the existence of several pathways that remodel seed pectin since overexpression of PMEI5 in hms rescued the developmental defects, indicating that HMS and PMEI5 targets act independently in HG remodeling [35] and that their action affects HG properties differently. The DUF642 cell wall-associated protein, BIIDXI, is a further regulator of pectin methylesterase activity required for normal embryo development, as embryo bending is impaired in mutant seeds [33]. Here, however, differences in methylesterification appeared to be correlated with less demethylesterifed HG in endosperm cell walls.…”

Section: Functional Roles Of Polysaccharides During Seed Developmentmentioning

confidence: 99%

Emerging Functions for Cell Wall Polysaccharides Accumulated during Eudicot Seed Development

Sechet

Marion‐Poll

North

2018

Plants

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The formation of seeds is a reproductive strategy in higher plants that enables the dispersal of offspring through time and space. Eudicot seeds comprise three main components, the embryo, the endosperm and the seed coat, where the coordinated development of each is important for the correct formation of the mature seed. In addition, the seed coat protects the quiescent progeny and can provide transport mechanisms. A key underlying process in the production of seed tissues is the formation of an extracellular matrix termed the cell wall, which is well known for its essential function in cytokinesis, directional growth and morphogenesis. The cell wall is composed of a macromolecular network of polymers where the major component is polysaccharides. The attributes of polysaccharides differ with their composition and charge, which enables dynamic remodeling of the mechanical and physical properties of the matrix by adjusting their production, modification or turnover. Accordingly, the importance of specific polysaccharides or modifications is increasingly being associated with specialized functions within seed tissues, often through the spatio-temporal accumulation or remodeling of particular polymers. Here, we review the evolution and accumulation of polysaccharides during eudicot seed development, what is known of their impact on wall architecture and the diverse roles associated with these in different seed tissues.

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