meristem


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Related to meristem: lateral meristem, primary meristem

meristem

or

meristematic tissue

a region of a plant in which active cell division (MITOSIS) occurs, the cells of the meristem not being differentiated into a specialist form. Meristematic tissues occur at the root and shoot tips (see APICAL MERISTEM giving growth in length, while increase in girth of the plant is produced by the CAMBIUM of VASCULAR BUNDLES and the INTERFASCICULAR CAMBIUM. Note that such specialist dividing zones are not found in animals, where cell division occurs in most tissues.
References in periodicals archive ?
After California Assembly Bill 2840 was signed by the governor, funding an autism employment pilot program, 12 MERISTEM students were invited to become part of a leadership lab.
In the apical meristem, ablation of the selected cells can increase the persistence of meri-clone regeneration, which results in the production of virus-free plantlets at high propotion (Nascimento et al., 2003; Wasswa et al., 2010; Wang and Valkonen, 2008).
Classifying branching based on location of meristem for some types (non-axillary, dichotomy) vs.
The rate of cell differentiation controls the arabidopsis root meristem growth phase.
We found that one of these sulfated peptide families indeed rescued proximal meristem activity of tpst-1 at nanomolar concentrations and accordingly named it the RGF family9 (Fig.
The effectiveness of BAP on other cytokinins in the induction of meristem multiplication has also been reported in different banana cultivars (Farahani et al., 2008).
The CRC genes are expressed abaxially in the carpel, placenta, and nectaries promoting the development of the gynoecium and abaxial part of the carpel wall, and terminating the floral meristem [33-38].
These results show that all juice samples tested, under the conditions established, were cytotoxic to root meristem cells of Allium cepa, because they have caused marked anti proliferative effect to root meristems.
The use of direct regeneration systems via organized meristem cultures such as enhanced axillary branches are preferred (Vasil, 1994), because they can resist genetic changes occurring during cell division and differentiation and produce true to type plants (Shenoy and Vasil, 1992).
Eucalyptus camaldulensis plants originated from adult material in vitro and grown for 35 days were used as source of meristems. The apex meristems with about 1 mm (isolated meristem) and about 2.5 mm (meristem with adjacent tissue) in length were excised using the stereomicroscope.
Meristem tip culture, also known as virus elimination, is a technique based on the principal of pathogen exclusion where cells or tissues that do not harbour viruses are cultured and allowed to regenerate into a fully functional plant [9].