Square one: zygote polarity and early embryogenesis in flowering plants

Wang, Kai; Chen, Houming; Miao, Yingjing; Bayer, Martin

doi:10.1016/j.pbi.2019.10.002

Cited by 16 publications

(5 citation statements)

References 57 publications

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“…At the onset of embryogenesis, the so-called proembryo stage, cell divisions are tightly linked to the establishment of the embryo polarity and patterning. Hormonal control of these primary divisions, especially by auxin, was adequately studied (reviewed in references [45][46][47]) (Figure 2); however, the impact of respective mutations usually involves a drastic decrease in the embryo viability up to the point of the seed abortion. The following rounds of cell division are, apparently, less restricted in their number and duration and thus may serve as the source of temporal plasticity.…”

Section: Cell Proliferation During Embryogenesismentioning

confidence: 99%

Temporal Control of Seed Development in Dicots: Molecular Bases, Ecological Impact and Possible Evolutionary Ramifications

Malovichko

Shikov

Nizhnikov

et al. 2021

IJMS

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In flowering plants, seeds serve as organs of both propagation and dispersal. The developing seed passes through several consecutive stages, following a conserved general outline. The overall time needed for a seed to develop, however, may vary both within and between plant species, and these temporal developmental properties remain poorly understood. In the present paper, we summarize the existing data for seed development alterations in dicot plants. For genetic mutations, the reported cases were grouped in respect of the key processes distorted in the mutant specimens. Similar phenotypes arising from the environmental influence, either biotic or abiotic, were also considered. Based on these data, we suggest several general trends of timing alterations and how respective mechanisms might add to the ecological plasticity of the families considered. We also propose that the developmental timing alterations may be perceived as an evolutionary substrate for heterochronic events. Given the current lack of plausible models describing timing control in plant seeds, the presented suggestions might provide certain insights for future studies in this field.

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Section: Cell Proliferation During Embryogenesismentioning

confidence: 99%

Temporal Control of Seed Development in Dicots: Molecular Bases, Ecological Impact and Possible Evolutionary Ramifications

Malovichko

Shikov

Nizhnikov

et al. 2021

IJMS

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“…Root growth and development depend on the root apical meristem (RAM) established first during embryogenesis. In dicotyledonous plants such as Arabidopsis , the embryo development progresses through these key embryo stages: zygote, dermatogen, globular, heart, torpedo, bent, and mature [ 50 , 51 , 52 , 53 ] ( Figure 1 A). During the early embryonic development of plants, the zygote polarization, establishment of an apical–basal axis, dermatogen specialization, symmetrical mode transformation, hypophysis specialization, and root meristem formation all depend on auxin [ 54 ].…”

Section: Auxin and Tor Interplay Regulates The Formation Of Embryonic Rootsmentioning

confidence: 99%

Auxin and Target of Rapamycin Spatiotemporally Regulate Root Organogenesis

Xie

Wang

Datla

et al. 2021

IJMS

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The programs associated with embryonic roots (ERs), primary roots (PRs), lateral roots (LRs), and adventitious roots (ARs) play crucial roles in the growth and development of roots in plants. The root functions are involved in diverse processes such as water and nutrient absorption and their utilization, the storage of photosynthetic products, and stress tolerance. Hormones and signaling pathways play regulatory roles during root development. Among these, auxin is the most important hormone regulating root development. The target of rapamycin (TOR) signaling pathway has also been shown to play a key role in root developmental programs. In this article, the milestones and influential progress of studying crosstalk between auxin and TOR during the development of ERs, PRs, LRs and ARs, as well as their functional implications in root morphogenesis, development, and architecture, are systematically summarized and discussed.

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“…Triticum aestivum ) [ 45 , 46 ]. This division leads to an apical daughter cell (AC) which always provides cells that contribute to the embryo proper (EP; the part of the embryo that upon completion of germination develops into the seedling) and a basal daughter cell (BC) forming the suspensor and at least part of the root (for review [ 47 ]). The suspensor is a transient structure that supports the developing embryo.…”

Section: Morphogenesis In Arabidopsismentioning

confidence: 99%

Genetic activity during early plant embryogenesis

Tian

Paul

Joshi

et al. 2020

Biochemical Journal

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Seeds are essential for human civilization, so understanding the molecular events underpinning seed development and the zygotic embryo it contains is important. In addition, the approach of somatic embryogenesis is a critical propagation and regeneration strategy to increase desirable genotypes, to develop new genetically modified plants to meet agricultural challenges, and at a basic science level, to test gene function. We briefly review some of the transcription factors (TFs) involved in establishing primary and apical meristems during zygotic embryogenesis, as well as TFs necessary and/or sufficient to drive somatic embryo programs. We focus on the model plant Arabidopsis for which many tools are available, and review as well as speculate about comparisons and contrasts between zygotic and somatic embryo processes.

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Square one: zygote polarity and early embryogenesis in flowering plants

Cited by 16 publications

References 57 publications

Temporal Control of Seed Development in Dicots: Molecular Bases, Ecological Impact and Possible Evolutionary Ramifications

Temporal Control of Seed Development in Dicots: Molecular Bases, Ecological Impact and Possible Evolutionary Ramifications

Auxin and Target of Rapamycin Spatiotemporally Regulate Root Organogenesis

Genetic activity during early plant embryogenesis

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