AINTEGUMENTA, an APETALA2-like gene of Arabidopsis with pleiotropic roles in ovule development and floral organ growth.

Elliott, Robert C.; Betzner, Andreas S.; Huttner, Eric; Oakes, Marie; Tucker, William Q. J.; Gerentes, Denise; Peréz, Pascual; Smyth, David

doi:10.1105/tpc.8.2.155

Cited by 583 publications

(200 citation statements)

References 39 publications

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“…All of these are expressed in young, dividing tissue and play central roles in different developmental processes including embryogenesis (Elliott et al 1996;Klucher et al 1996;Boutilier et al 2002;Aida et al 2004;Galinha et al 2007). The importance of the AIL function and its relation to auxin in zygotic embryo development was indicated (Aida et al 2004;Blilou et al 2005).…”

Section: Plethora Genes-the Integrators Of Hormonal Inputsmentioning

confidence: 99%

Transcription Factors in the Regulation of Somatic Embryogenesis

Nowak

Gaj

2016

Somatic Embryogenesis: Fundamental Aspects and Applications

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Somatic embryogenesis (SE), the process through which already differentiated cells reverse their developmental programme and become embryogenic, requires drastic changes in the transcriptome of the explant cells. Among the various factors that underlie this developmental switch, genes encoding transcription factors (TFs), which constitute the sequence-specific DNA-binding proteins, are widely accepted as playing a central function in the gene expression regulation. In recent years, intensive analysis of the global transcriptomes of plant cells that are undergoing embryogenic transition and the use of Arabidopsis (a model in plant genomics) in studies on the genetic control of SE have substantially contributed to the identification of SE regulators. A survey of SE-associated transcriptomes illustrated the combinational effects of stress and hormone signalling that are related to the in vitro environment that is imposed during a culture. Accordingly, among the TFs that are considered to be essential in SE induction, those that are involved in stress and hormone plant responses and especially flower development were found to be most frequent. This chapter provides a comprehensive review of the current knowledge about the TFs that are involved in the induction of SE in plant explants that are cultured in vitro. In addition to a general characterisation of the TF transcriptomes that are associated with SE induction in different plants, the individual TF genes with documented functions in the regulation of SE are presented with a special reference to their possible targets and the TF-controlled molecular mechanisms that underlie SE induction.

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Section: Plethora Genes-the Integrators Of Hormonal Inputsmentioning

confidence: 99%

Transcription Factors in the Regulation of Somatic Embryogenesis

Nowak

Gaj

2016

Somatic Embryogenesis: Fundamental Aspects and Applications

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“…Starting at stage 2, ANT is expressed in the chalaza and integuments primordia where it is speculated to regulate cell proliferation underlying integument outgrowth [16, 49]. Furthermore, ANT and the mitochondrial ribosomal protein HUELLENLOS (HLL) have redundant functions in establishing the ovule proximal–distal axis [73, 79].…”

Section: Natural Diversity In Seed Coat Thicknessmentioning

confidence: 99%

Seed coat thickness in the evolution of angiosperms

Coen

Magnani

2018

Cell. Mol. Life Sci.

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The seed habit represents a remarkable evolutionary advance in plant sexual reproduction. Since the Paleozoic, seeds carry a seed coat that protects, nourishes and facilitates the dispersal of the fertilization product(s). The seed coat architecture evolved to adapt to different environments and reproductive strategies in part by modifying its thickness. Here, we review the great natural diversity observed in seed coat thickness among angiosperms and its molecular regulation in Arabidopsis.

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“…Genetic studies have identified many of the genes that participate in A. thaliana ovule development, such as SHOOT MERISTEMLESS ( STM ), CUP-SHAPED COTYLEDONS1 ( CUC1 ) and CUC2 , which are involved in meristematic cell maintenance [5–8]. There is also evidence that AINTEGUMENTA ( ANT ) is required specifically to promote the growth of the placenta to allow ovule primordium formation [9], and mutations in BELL1 (BEL1) , which is required for integument morphogenesis, affect ovule identity [10, 11]. Furthermore, the MADS-box genes AGAMOUS ( AG ), SEPALLATA ( SEP1 , SEP2 and SEP3 ), SHATTERPROOF ( SHP1 and SHP2 ) and SEEDSTICK ( STK , also known as AGL11 ) share a common function in promoting ovule and seed identity [12–15].…”

Section: Introductionmentioning

confidence: 99%

Transcriptome analyses of seed development in grape hybrids reveals a possible mechanism influencing seed size

Wang

Jiao

et al. 2016

BMC Genomics

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BackgroundSeedlessness in grape (Vitis vinifera) is of considerable commercial importance for both the table grape and processing industries. Studies to date of grape seed development have been made certain progress, but many key genes have yet to be identified and characterized.ResultsIn this study we analyzed the seed transcriptomes of progeny derived from the V. vinifera seeded maternal parent ‘Red Globe’ and the seedless paternal parent ‘Centennial seedless’ to identify genes associated with seedlessness. A total of 6,607 differentially expressed genes (DEGs) were identified and examined from multiple perspectives, including expression patterns, Gene Ontology (GO) annotations, pathway enrichment, inferred hormone influence and epigenetic regulation. The expression data of hormone-related genes and hormone level measurement reveals the differences during seed development between seedless and seeded progeny. Based on both our results and previous studies of A. thaliana seed development, we generated network maps of grape seed-related DEGs, with particular reference to hormone balance, seed coat and endosperm development, and seed identity complexes.ConclusionIn summary, the major differences identified during seed development of seedless and seeded progeny were associated with hormone and epigenetic regulation, the development of the seed coat and endosperm, and the formation of seed identity complexes. Overall the data provides insights into the possible molecular mechanism controlling grape seed size, which is of great importance for both basic research and future translation applications in the grape industry.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-016-3193-1) contains supplementary material, which is available to authorized users.

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AINTEGUMENTA, an APETALA2-like gene of Arabidopsis with pleiotropic roles in ovule development and floral organ growth.

Cited by 583 publications

References 39 publications

Transcription Factors in the Regulation of Somatic Embryogenesis

Transcription Factors in the Regulation of Somatic Embryogenesis

Seed coat thickness in the evolution of angiosperms

Transcriptome analyses of seed development in grape hybrids reveals a possible mechanism influencing seed size

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