Results 221 to 230 of about 16,669,633 (263)

A Cytokinin Oxidase in Zea mays

Canadian Journal of Biochemistry, 1974
An enzyme activity that catalyzes conversion of N6-(Δ2-isopentenyl)adenosine (i6Ado) to adenosine was detected in cultured tobacco tissue by Pačes et al. (1971) (Plant Physiol. 48, 775–778). Purification and characteristics of this enzyme in corn kernels have been studied.
Whitty Cd, Hall Rh
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The Mu Elements of Zea mays

1992
Publisher Summary This chapter focuses on the biology of the mutator ( Mu ) system in maize. The chapter discusses what is currently known about the structure and properties of the various Mu elements, including the transmission, timing, and maintenance and loss of mutator activity.
Vicki L. Chandler, Kristine J. Hardeman
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Polyploidy in Zea Mays L.

The American Naturalist, 1926
In 1926, McClintock and Lowell "Fitz" Randolph published this note on a triploid maize plant, the first known triploid in maize. The genetics and cytology of this plant became the basis of McClintock's Ph.D. thesis in 1929.
L. F. Randolph, Barbara McClintock
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Occurrence of sorbitol in Zea mays

Phytochemistry, 1982
Abstract The identity of sorbitol ( d -glucitol) from maize seeds was confirmed by GC/MS of the TMSi-ether and by co-chromatography with authentic sorbitol. Sorbitol was found in seeds and silks but not in pollen or leaves. Both endosperm and embryo contained sorbitol, but endosperm accounted for most of the sorbitol recovered from intact seeds.
A. M. Rhodes, E. E. Carey, David B. Dickinson, L.Y. Wei   +3 more
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THE INTERCONVERSION OF GLYCINE AND SERINE IN ZEA MAYS

Canadian Journal of Biochemistry and Physiology, 1959
Glycine and formaldehyde are converted into serine in the presence of a dialyzed, lyophilized enzyme preparation from corn seedlings, with tetrahydropteroylglutamic acid and pyridoxal phosphate as coenzymes. The equilibrium constant of the reaction was calculated for the system at 37.5 °C as K = 3.1 × 103. The pH activity curve showed a maximum between
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Biosynthesis of ecdysteroids in Zea mays

Phytochemistry, 1995
Abstract The incubation of several radiolabelled substrates with Zea mays plants demonstrated the incorporation of radiolabels into ecdysteroid conjugates. Radiolabelled [14C]ecdysone and [14C]20-hydroxyecdysone, were biosynthesized from [2-14C]mevalonic acid (MVA) in Z. mays. These ecdysteroids can be released from their conjugates by treatment with
Banalata Sen-Michael, Timothy P. Devarenne, John H. Adler   +2 more
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Site-specific recombination in Zea mays

Theoretical and Applied Genetics, 2005
The elimination of marker genes after selection is recommended for the commercial use of genetically modified plants. We compared the applicability of the two site-specific recombination systems Cre/lox and Flp/FRT for marker gene elimination in maize plants.
Horst Lörz, S. Kerbach, Dirk Becker
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Conjugation of Gibberellins in Zea mays

1990
Glucosyl conjugates represent the main group of endogenous GA conjugates in higher plants [19]. In addition, the metabolic formation of GA glucosyl conjugates following feeds of GAs to various plant tissues is a well-established phenomenon. However, the physiological role(s) of GA glucosyl conjugates is (are) still unclear, although certain functions ...
J. Schmidt, G. Schneider
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Immunochemical prognosis of heterosis in Zea mays

Theoretical and Applied Genetics, 1974
Heterosis is a complex biological phenomenon. Because of the complex interaction and interrelation between "genes - metabolism - environment", it is hardly possible to expect a clarification of the heterosis phenomenon through simple genetic explanations only (Hagemann et al. 1967).We have followed an immunochemical aspect and method of research.
O. Nashkova, S. Petkova, P. Dimitrov, E. Marinkov, D. Nashkov   +4 more
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Novel Effects of Nanoparticulate Delivery of Zinc on Growth, Productivity, and Zinc Biofortification in Maize (Zea mays L.).

Journal of Agricultural and Food Chemistry, 2016
In the present investigation, nanoscale zinc oxide particulates (ZnO-nanoparticulates) were prepared using a modified oxalate decomposition method. Prepared ZnO-nanoparticulates (mean size = 25 nm) were characterized using techniques such as transmission
L. V. Subbaiah, T. Prasad, T. G. Krishna, P. Sudhakar, B. R. Reddy, T. Pradeep   +5 more
semanticscholar   +1 more source