Convergence of developmental mutants into a single tomato model system: 'Micro-Tom' as an effective toolkit for plant development research

The last Royal Society Discussion Meeting on plant development, held in April 1986, focused on the establishment of specific developmental states by differential gene expression. Few plant genes or cDNAs had been sequenced, and the dramatic opportunities offered by transgenesis, use of Arabidopsis as a model system and methods such as pcr were still well below the horizon. Nevertheless, the meeting served to highlight many of the unique features of plant development including an alternation between sporophytic and gametophytic generations, the absence of a maintained germ line, an autotrophic lifestyle coupled with a sedentary existence in a constantly changing environment, an indeterminate mode of growth associated with a programme of continuous differentiation throughout the life cycle, and spectacular developmental plasticity exemplified by the ability of single cells to regenerate into whole plants.

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Genetic control of identity and growth in the early Arabidopsis embryo

Biochemical Society Transactions ◽

10.1042/bst20130218 ◽

2014 ◽

Vol 42 (2) ◽

pp. 346-351 ◽

Cited By ~ 4

Author(s):

Dolf Weijers

Keyword(s):

Stem Cells ◽

Plant Development ◽

Vascular Tissue ◽

Cell Types ◽

Model System ◽

Tissue Formation ◽

Subsequent Growth ◽

Future Challenges ◽

Different Cell Types ◽

Embryonic Root

Plants can grow complex and elaborate structures, in some species for thousands of years. Despite the diversity in form and shape, plants are built from a limited number of fundamental tissue types, and their arrangement is deeply conserved in the plant kingdom. A key question in biology is how these fundamental tissues, i.e. epidermal, ground and vascular tissue, are specified and organized in time and space. In the present paper, I discuss the use of the early Arabidopsis embryo as a model system to dissect the control of tissue formation and patterning, as well as the specification of the stem cells that sustain post-embryonic growth. I present recent insights into the molecules and mechanisms that control both the specification and the subsequent growth of the different cell types within the embryonic root. Finally, I discuss major unanswered questions and future challenges in using the embryo as a model to decipher the regulatory logic of plant development.

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Faculty Opinions recommendation of The moss Physcomitrella patens: a novel model system for plant development and genomic studies.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.725308599.793503021 ◽

2015 ◽

Author(s):

Jennifer Nemhauser ◽

R Clay Wright

Keyword(s):

Plant Development ◽

Physcomitrella Patens ◽

Model System ◽

Genomic Studies ◽

Novel Model

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The Moss Physcomitrella patens: A Novel Model System for Plant Development and Genomic Studies

Cold Spring Harbor Protocols ◽

10.1101/pdb.emo115 ◽

2009 ◽

Vol 2009 (2) ◽

pp. pdb.emo115-pdb.emo115 ◽

Cited By ~ 29

Author(s):

D. J. Cove ◽

P.-F. Perroud ◽

A. J. Charron ◽

S. F. McDaniel ◽

A. Khandelwal ◽

...

Keyword(s):

Plant Development ◽

Physcomitrella Patens ◽

Model System ◽

Genomic Studies ◽

Novel Model

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Sociocultural memory development research drives new directions in gadgetry science

Behavioral and Brain Sciences ◽

10.1017/s0140525x19000979 ◽

2019 ◽

Vol 42 ◽

Author(s):

Penny Van Bergen ◽

John Sutton

Keyword(s):

Episodic Memory ◽

Autobiographical Memory ◽

Developmental Psychology ◽

Cross Cultural ◽

Memory Development ◽

Development Research ◽

Cultural Research ◽

New Directions ◽

Cross Cultural Research

Abstract Sociocultural developmental psychology can drive new directions in gadgetry science. We use autobiographical memory, a compound capacity incorporating episodic memory, as a case study. Autobiographical memory emerges late in development, supported by interactions with parents. Intervention research highlights the causal influence of these interactions, whereas cross-cultural research demonstrates culturally determined diversity. Different patterns of inheritance are discussed.

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A Protozoan Model for Golgi-Associated Calcification

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100065705 ◽

1971 ◽

Vol 29 ◽

pp. 332-333

Author(s):

D. C. Williams ◽

D. E. Outka

Keyword(s):

Golgi Apparatus ◽

Organic Matrix ◽

Model System ◽

Sequential Formation

Many studies have shown that the Golgi apparatus is involved in a variety of synthetic activities, and probably no Golgi product is more elaborate than the scales produced by various kinds of phytoflagellates. The formation of calcified scales (coccoliths, Fig. 1,2) of the coccolithophorid phytoflagellates provides a particularly interesting model system for the study of biological mineralization, and the sequential formation of Golgi products.The coccoliths of Hymenomonas carterae consist of a scale-like base (Fig. 2 and 4, b) with a highly structured calcified (CaCO3) rim composed of two distinct elements which alternate about the base periphery (Fig. 1 and 3, A, B). Each element is enveloped by a sheath-like organic matrix (Fig. 3; Fig. 4, m).

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Existence of DNA in yeast microbodies

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100082029 ◽

1978 ◽

Vol 36 (2) ◽

pp. 232-233

Author(s):

Masako Osumi ◽

Misuzu Nagano ◽

Hiroko Kazama

Keyword(s):

Catalase Activity ◽

Buoyant Density ◽

Model System ◽

Contour Length ◽

Native State ◽

Normal Alkane ◽

Remarkable Increase ◽

Dna Molecule ◽

Mitochondrial Dnas

We have found that microbodies appeared profusely together with a remarkable increase in catalase activity in normal alkane-grown cells of hydrocarbon-utilizing Candida yeasts, and that the microbodies multiplied by division in these cells. These features of Candida yeasts seem to provide a useful model system for studies on the biogenesis of the microbody. Subsequently, we have succeeded in isolation of Candida microbodies in an apparently native state, as judged biochemically and morphologically. The presence of DNA in the purified microbody fraction thus obtained was proved by the diphenylamine method. DNA molecule of about 15 urn in contour length was released from an isolated microbody. The physicochemical analyses of the microbody DNA revealed that its buoyant density differed from nuclear and mitochondrial DNAs. All these results lead us to the possibility that there is a novel type of DNA in microbodies.

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The coprecipitation of Cr3P and Cr in Cu

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100105886 ◽

1988 ◽

Vol 46 ◽

pp. 764-765

Author(s):

M.J. Witcomb ◽

U. Dahmen ◽

K.H. Westmacott

Keyword(s):

Orientation Relationship ◽

Interface Structure ◽

Model System ◽

Relative Orientation ◽

Age Hardening ◽

Precipitation Behavior ◽

Solution Treated ◽

Small Needle ◽

Diffraction Patterns ◽

Interface Structures

Cu-Cr age-hardening alloys are of interest as a model system for the investigation of fcc/bcc interface structures. Several past studies have investigated the morphology and interface structure of Cr precipitates in a Cu matrix (1-3) and good success has been achieved in understanding the crystallography and strain contrast of small needle-shaped precipitates. The present study investigates the effect of small amounts of phosphorous on the precipitation behavior of Cu-Cr alloys.The same Cu-0.3% Cr alloy as was used in earlier work was rolled to a thickness of 150 μm, solution treated in vacuum at 1050°C for 1h followed by quenching and annealing for various times at 820 and 863°C.Two laths and their corresponding diffraction patterns in an alloy aged 2h at 820°C are shown in correct relative orientation in Fig. 1. To within the limit of accuracy of the diffraction patterns the orientation relationship was that of Kurdjumov-Sachs (KS), i.e. parallel close-packed planes and directions.

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