scholarly journals INTERACTION AMONG C, R AND Vp IN THE CONTROL OF THE Bz GLUCOSYLTRANSFERASE DURING ENDOSPERM DEVELOPMENT IN MAIZE

Genetics ◽  
1979 ◽  
Vol 91 (2) ◽  
pp. 309-315
Author(s):  
Hugo K Dooner ◽  
Oliver E Nelson
Keyword(s):  
Structural Gene ◽  
Anthocyanin Biosynthesis ◽  
Endosperm Development ◽  
Maize Endosperm ◽  
Low Level

ABSTRACT The enzyme UPD glucose: flavonoid 3-0-glucosyltransferase (UFGT), involved in anthocyanin biosynthesis, is controlled by at least four genes (Bz, C, R and Vp) in the maize endosperm. Bz is the structural gene for the enzyme. Early in endosperm development, the enzyme is present in an uninduced low level that is independent of C, R and Vp, and dependent solely on Bz. Beginning at about the fourth week of development, C, R and Vp interact with each other to induce high levels of UFGT. The enzyme accumulates thereafter in normal endosperms, reaching its highest level at maturity. The nature of the developmental signal (s) controlled by C, R and Vp is discussed.

The integration of mutant loci affecting maize endosperm development in a dense genetic map using an AFLP-based procedure

2008 ◽  
Vol 22 (4) ◽  
pp. 527-541 ◽  
Author(s):  
Luca Pasini ◽  
Maria Rosaria Stile ◽  
Enrico Puja ◽  
Rita Valsecchi ◽  
Priscilla Francia ◽  
...  
Keyword(s):  
Genetic Map ◽  
Endosperm Development ◽  
Maize Endosperm

scholarly journals eEF1A Isoforms Change in Abundance and Actin-Binding Activity during Maize Endosperm Development

2003 ◽  
Vol 133 (3) ◽  
pp. 1285-1295 ◽  
Author(s):  
Jose A. Lopez-Valenzuela ◽  
Bryan C. Gibbon ◽  
Peter A. Hughes ◽  
Theo W. Dreher ◽  
Brian A. Larkins
Keyword(s):  
Endosperm Development ◽  
Binding Activity ◽  
Actin Binding ◽  
Maize Endosperm

scholarly journals Spatio-temporal analysis of coding and long noncoding transcripts during maize endosperm development

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Eun-Deok Kim ◽  
Yuqing Xiong ◽  
Youngjae Pyo ◽  
Dong-Hwan Kim ◽  
Byung-Ho Kang ◽  
...  
Keyword(s):  
Temporal Analysis ◽  
Endosperm Development ◽  
Maize Endosperm ◽  
Spatio Temporal

scholarly journals The Importance of the Enzyme Sucrose Synthase for Cell Wall Synthesis in Plants

1994 ◽  
Author(s):  
Deborah P. Delmer ◽  
Prem S. Chourey
Keyword(s):  
Cell Wall ◽  
Plasma Membrane ◽  
Cotton Seed ◽  
Sucrose Synthase ◽  
Starch Synthesis ◽  
Endosperm Development ◽  
Current Evidence ◽  
Cell Wall Synthesis ◽  
Maize Endosperm ◽  
Callose Deposition

The goal of this work was to understand the role of the enzyme sucrose synthase (SuSy) in synthesis of cellulose and callose in plants. The work resulting from the this grant leads to a number of conclusions. SuSy clearly plays diverse roles in carbon metabolism. It can associate with the plasma membrane of cells undergoing rapid cellulose deposition, such as cotton fibers, developing maize endosperm, gravistimulated pulvini, and transfer cells of the cotton seed. It is also concentrated at sites of high callose deposition (tapetal cells; cell plates). When SuSy levels are lowered by mutation or by anti-sense technology, cell walls undergo degeneration (maize endosperm) and show reduced levels of cellulose (potato tubers). In sum, our evidence has very much strengthened the concept that SuSy does function in the plasma membrane to channel carbon from sucrose via UDP-glucose to glucan synthase complexes. Soluble SuSy also clearly plays a role in providing carbon for starch synthesis and respiration. Surprisingly, we found that the cotton seed is one unique case where SuSy apparently does not play a role in starch synthesis. Current evidence in sum suggests that no specific SuSy gene encodes the membrane-associated form, although in maize the SS 1 form of SuSy may be most important for cell wall synthesis in the early stages of endosperm development. Work is still in progress to determine what does control membrane localization - and the current evidence we have favors a role for Ca2+, and possibly also protein phosphorylation by differentially regulated protein kinases. Finally, we have discovered for the first time, a major new family of genes that encode the catalytic subunit of the cellulose synthase of plants - a result that has been widely cited and opens many new approaches for the study of this important plant function.

scholarly journals PLOIDY BARRIER TO ENDOSPERM DEVELOPMENT IN MAIZE

Genetics ◽  
1984 ◽  
Vol 107 (1) ◽  
pp. 103-115
Author(s):  
Bor-Yaw Lin
Keyword(s):  
Ploidy Level ◽  
Present Finding ◽  
Endosperm Development ◽  
Viable Seed ◽  
Paternal Chromosome ◽  
Maize Endosperm ◽  
Female Side ◽  
Diploid Males ◽  
Paternal Genome ◽  
Maize Kernels

ABSTRACT Maize kernels inheriting the indeterminate gametophyte mutant (ig) on the female side had endosperms that ranged in ploidy level from diploid (2x) to nonaploid (9x). In crosses with diploid males, only kernels of the triploid endosperm class developed normally. Kernels of the tetraploid endosperm class were half-sized but with well-developed embryos that regularly germinated. Kernels of endosperm composition other than triploid or tetraploid were abortive.—Endosperm ploidy level resulting from mating ig/igx tetraploid Ig similarly was variable. Most endosperms started to degenerate soon after pollination and remained in an arrested state. Hexaploid endosperm was exceptional; it developed normally during the sequence of stages studied and accounted for plump kernels on mature ears. Since such kernels have diploid maternal tissues (pericarp) but triploid embryos, the present finding favors the view that endosperm failure or success in such circumstances is governed by conditions within the endosperm itself.—Whereas tetraploid endosperm consisting of three maternal genomes and one paternal genome is slightly reduced in size but supports viable seed development, that endosperm having two maternal and two paternal chromosome sets was highly defective and conditioned abortion. Thus, development of maize endosperm evidently is affected by the parental source of its sets of chromosomes.

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