Results 261 to 270 of about 52,681 (301)

Plant Regeneration from Citrus Root Meristems

Journal of Horticultural Science, 1982
SummaryCitrus root meristems, 300 to 500μ long, are able to grow in vitro and sometimes exhibit shoot differentiation spontaneously. Cultured on appropriate media such roots regenerate shoots and complete plants may be obtained.
Annie Sauton, A. Mouras, A. Lutz
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X-Irradiation of Root Meristems

Annals of Botany, 1963
Zea mays seedlings were irradiated when their primary roots were 10-20 mm long at doses of 900 or 1800 rad of unfiltered x rays, given at 113 rad/min from a machine operating at 70 kv. For calculation of the rates of mitosis in the different regions of the meristem the method of metaphase accumulation was adapted.
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Postembryonic control of root meristem growth and development

Current Opinion in Plant Biology, 2014
Organ development in multicellular organisms is dependent on the proper balance between cell proliferation and differentiation. In the Arabidopsis root apical meristem, meristem growth is the result of cell divisions in the proximal meristem and cell differentiation in the elongation and differentiation zones.
Rosangela, Sozzani, Anjali, Iyer-Pascuzzi   +1 more
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Cytochemical adenosinetriphosphatase in plant root meristem

Journal of Cell Science, 1968
ABSTRACT Root tip meristems were stained to demonstrate ATPase activity by two different methods, with general agreement in localization but not specificity, and with emphasis on mitotic cells. In interphase, ATPase was localized in nucleoli and nuclear membranes, with lesser activity in the nuclear substance. In prophase,
Norma Shifrin, L. Levine
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Subcellular distribution of calcium within root meristem cells

Acta Histochemica, 1977
The barley root (Hordeum vulgare) of 3-day old seedlings were treated with potassium oxalate to study the distribution of calcium among plant cell organelles. The best results were obtained by previously treating the root with 10(-3) M CaCl2 followed by an incubation for 20 min with potassium oxalate.
M, Iordan, C, Craciun, V, Soran
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Organization of the root apical meristem in angiosperms

American Journal of Botany, 2008
Although flowers, leaves, and stems of the angiosperms have understandably received more attention than roots, the growing root tips, or root apical meristems (RAMs), are organs that could provide insight into angiosperm evolution. We studied RAM organization across a broad spectrum of angiosperms (45 orders and 132 families of basal angiosperms ...
Charles, Heimsch, James L, Seago
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Plant-Associated Microbes Alter Root Growth by Modulating Root Apical Meristem

2019
Rhizobacteria are known to produce a variety of signal molecules which may modify plant growth by interfering with phytohormone balance. Among the microbial signals are phytohormones, known to contribute to plant endogenous pool of phytohormones. The current chapter describes different methods to study the regulation of gene expression in root apical ...
Anwar, Hussain, , Husna, Ihsan, Ullah, Muhammad, Naseem   +3 more
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Nutrition and the quiescent centre of root meristems

Planta, 1970
Root apices were fed with tritiated thymidine from the endosperm and from labelled root caps placed on decapped roots. Supply from both sources reaches the meristem, but is attenuated by the demand of the dividing cells. The thymidine reaches the far sides of the quiescent centre from both directions.
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Got root? Initiation of the embryonic root meristem.

2007
Plant development relies on the activity of meristems, small groups of undifferentiated cells that produce all organs. The first meristems are formed in the embryo, and all subsequent development depends on their proper establishment, making embryonic meristem initiation a key step in plant life.
Rademacher, E.H., Weijers, D.
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Water Stress Tolerance in Root Meristems

Giornale botanico italiano, 1994
Chiatante D., MAIURO, Lucia, SCIPPA, Gabriella   +2 more
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