Definition of meristem in English:

meristem

noun ˈmɛrɪstɛmˈmɛrəˌstɛm

Botany

A region of plant tissue, found chiefly at the growing tips of roots and shoots and in the cambium, consisting of actively dividing cells forming new tissue.
〔植〕分生组织
the apical meristem of the shoot produces the embryonic seed leaves
Example sentencesExamples
- Leaves communicate photoperiodic signals to meristems, stolons and buds in flowering, tuberization and dormancy.
- Plant growth originates from meristems, localized tissues with stem cell features that are at the origin of all organs of the plant.
- These embryos had organized root meristems and apical shoot meristems flanked by the developing cotyledons.
- The developmentally accumulated proteins localized to early differentiating, but not the highly dividing, regions of the root and shoot apical meristems.
- This condition can also be due to restricted diffusion of oxygen into internal tissues or high rates of cellular metabolism, as in actively dividing cells of meristems.

Derivatives

meristematic

adjective mɛrɪstəˈmatɪkˌmɛrəstəˈmædɪk

Botany

Relating to or denoting a region of plant tissue consisting of actively dividing cells forming new tissue.
meristematic cells located in the tip of the root
Example sentencesExamples
- Just after completion of the wound periderm, a new meristematic tissue began to form in inner layers of callus.
- In poplar, cell-cycle control genes were highly expressed in the phloem and meristematic region of a stem cross-section.
- For example, the cells at the base of the coleoptile in the meristematic regions may have died since development of leaves or roots did not occur in these coleoptiles when re-aerated.

Origin

Late 19th century: formed irregularly from Greek meristos 'divisible', from merizein 'divide into parts', from meros 'part'. The suffix -em is on the pattern of words such as xylem.

Definition of meristem in US English:

meristem

nounˈmɛrəˌstɛmˈmerəˌstem

Botany

A region of plant tissue, found chiefly at the growing tips of roots and shoots and in the cambium, consisting of actively dividing cells forming new tissue.
〔植〕分生组织
the apical meristem of the shoot produces the embryonic seed leaves
Example sentencesExamples
- Leaves communicate photoperiodic signals to meristems, stolons and buds in flowering, tuberization and dormancy.
- These embryos had organized root meristems and apical shoot meristems flanked by the developing cotyledons.
- The developmentally accumulated proteins localized to early differentiating, but not the highly dividing, regions of the root and shoot apical meristems.
- Plant growth originates from meristems, localized tissues with stem cell features that are at the origin of all organs of the plant.
- This condition can also be due to restricted diffusion of oxygen into internal tissues or high rates of cellular metabolism, as in actively dividing cells of meristems.

Origin

Late 19th century: formed irregularly from Greek meristos ‘divisible’, from merizein ‘divide into parts’, from meros ‘part’. The suffix -em is on the pattern of words such as xylem.

单词	meristem
释义	Definition of meristem in English: meristem noun ˈmɛrɪstɛmˈmɛrəˌstɛm Botany A region of plant tissue, found chiefly at the growing tips of roots and shoots and in the cambium, consisting of actively dividing cells forming new tissue. 〔植〕分生组织 the apical meristem of the shoot produces the embryonic seed leaves Example sentencesExamples Leaves communicate photoperiodic signals to meristems, stolons and buds in flowering, tuberization and dormancy. Plant growth originates from meristems, localized tissues with stem cell features that are at the origin of all organs of the plant. These embryos had organized root meristems and apical shoot meristems flanked by the developing cotyledons. The developmentally accumulated proteins localized to early differentiating, but not the highly dividing, regions of the root and shoot apical meristems. This condition can also be due to restricted diffusion of oxygen into internal tissues or high rates of cellular metabolism, as in actively dividing cells of meristems. Derivatives meristematic adjective mɛrɪstəˈmatɪkˌmɛrəstəˈmædɪk Botany Relating to or denoting a region of plant tissue consisting of actively dividing cells forming new tissue. meristematic cells located in the tip of the root Example sentencesExamples Just after completion of the wound periderm, a new meristematic tissue began to form in inner layers of callus. In poplar, cell-cycle control genes were highly expressed in the phloem and meristematic region of a stem cross-section. For example, the cells at the base of the coleoptile in the meristematic regions may have died since development of leaves or roots did not occur in these coleoptiles when re-aerated. Origin Late 19th century: formed irregularly from Greek meristos 'divisible', from merizein 'divide into parts', from meros 'part'. The suffix -em is on the pattern of words such as xylem. Definition of meristem in US English: meristem nounˈmɛrəˌstɛmˈmerəˌstem Botany A region of plant tissue, found chiefly at the growing tips of roots and shoots and in the cambium, consisting of actively dividing cells forming new tissue. 〔植〕分生组织 the apical meristem of the shoot produces the embryonic seed leaves Example sentencesExamples Leaves communicate photoperiodic signals to meristems, stolons and buds in flowering, tuberization and dormancy. These embryos had organized root meristems and apical shoot meristems flanked by the developing cotyledons. The developmentally accumulated proteins localized to early differentiating, but not the highly dividing, regions of the root and shoot apical meristems. Plant growth originates from meristems, localized tissues with stem cell features that are at the origin of all organs of the plant. This condition can also be due to restricted diffusion of oxygen into internal tissues or high rates of cellular metabolism, as in actively dividing cells of meristems. Origin Late 19th century: formed irregularly from Greek meristos ‘divisible’, from merizein ‘divide into parts’, from meros ‘part’. The suffix -em is on the pattern of words such as xylem.
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