scholarly journals A Unique Adenosine Diphosphoglucose Pyrophosphorylase Associated with Maize Embryo Tissue

1971 ◽  
Vol 47 (1) ◽  
pp. 104-108 ◽  
Author(s):  
Jack Preiss ◽  
Claudia Lammel ◽  
Annemiek Sabraw
Keyword(s):  
2021 ◽  
Author(s):  
Igor Rzhepakovsky ◽  
Shahida Anusha Siddiqui ◽  
Svetlana Avanesyan ◽  
Mehmet Benlidayi ◽  
Kunaal Dhingra ◽  
...  

1988 ◽  
Vol 188 (3) ◽  
pp. 370-374 ◽  
Author(s):  
J. Y. Vanderhoek ◽  
K. L. Klein
Keyword(s):  

2010 ◽  
Vol 1 (2) ◽  
pp. 49-57
Author(s):  
Е. V. Lyapustina

The investigation established the possibility of production of maize embryo in culture of isolated caryopsis on artificial nutrient medium in vitro conditions from a zygote / proembryo and globular stage up to the full maturity. It was determined that the cultivation of caryopsis on artificial nutrient medium provides the accumulation of starch in endosperm. The internal state of cultured caryopsis can be considered as a marker of embryo upgrowing and starch accumulation in endosperm, irrespective of the genotype. The genotype, the age of cultured caryopsis and concentration of sucrose influence on the development of endosperm, accumulation of starch in endosperm and embryo upgrowing from the zygote / proembryo and globular stage.


1960 ◽  
Vol 72 (1) ◽  
pp. 59-72
Author(s):  
NATHALIE J. SCHMIDT ◽  
EDWIN H. LENNETTE ◽  
CAROL W. SHON

Development ◽  
1966 ◽  
Vol 16 (3) ◽  
pp. 519-530
Author(s):  
Michael Edidin

Treatment with chelating agents binding divalent cations has been found to effect the dissociation of a variety of tissues of both embryo and adult animals (reviewed in Steinberg, 1958). In the course of dissociation it appears that materials are released from cell surfaces which play a part in their specific adhesion, and which may be shown experimentally to promote selectively the re-aggregation of dissociated cells (Humphreys, 1963; Moscona, 1963). The extracted materials appear to be glycoprotein complexes (Humphreys, 1965), made up of fairly small subunits, estimated to be of 13000–20000 molecular weight (Margoliash et al. 1965). Units of about the same size appear to be the antigenic sites involved in the blocking of sponge cell aggregation by rabbit anti-sponge serum, specific for a given sponge species (MacLennan, 1963). I shall here present evidence that materials of similar molecular weight bearing immunological specificities of the H-2 alloantigen system are released from the tissues of certain mouse embryos during the course of their dissociation by the chelating agent Versene (ethylenediaminetetraacetic acid).


1976 ◽  
Vol 57 (4) ◽  
pp. 632-639 ◽  
Author(s):  
Claude Van De Walle ◽  
Georges Bernier ◽  
Roger Deltour ◽  
Raymond Bronchart

1986 ◽  
Vol 77 (2) ◽  
pp. 83-92 ◽  
Author(s):  
Janice K. Clark ◽  
William F. Sheridan

2019 ◽  
Vol 41 ◽  
pp. e42707
Author(s):  
Cristhyane Garcia Araldi ◽  
Cileide Maria Medeiros Coelho

Germination metabolism of recalcitrant seeds of Araucaria angustifolia is activated in storage, which complicates the seeds conservation and utilization. This study aimed to identify the changes in the reserve metabolites of A. angustifolia seeds throughout storage in order to understand the processes of hydrolysis caused by germination metabolism. Mature seeds were harvested in southern Brazil and stored in an ambient environment and cold chamber conditions. Biochemical analyses were performed for embryos and megagametophytes from seeds stored for 0, 15, 30, 45, and 90 days. Due to seeds being in advanced germination in storage, they were evaluated at 90 days in different early developmental categories: I – seeds with mature embryos, II – seeds with embryos showing apparent elongation along the embryonic axis, and III – seeds with root protrusion. Higher contents of carbohydrate, protein, and amino acids were observed in embryos compared to megagametophytes, and these metabolites were decreased after onset of germination, especially in the embryo tissue. Mobilization of metabolites in megagametophytes would probably increase in later stages of germination. It is suggested that such alterations are not due to deterioration of reserve components, but instead are based on seed metabolism, which remains active after harvest with hydrolysis of metabolites providing energy for germination.


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