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单词 pericycle
释义

Definition of pericycle in English:

pericycle

noun ˈpɛrɪsʌɪk(ə)lˈperəˌsīk(ə)l
Botany
  • A thin layer of plant tissue between the endodermis and the phloem.

    Example sentencesExamples
    • The pericycle forms the outermost layer of the central cylinder.
    • These observations suggest that the cells in the pericycle of alloxan-treated plants are much more transcriptionally active than their control counterparts.
    • In addition, the host pericycle and endodermis in contact with abortive haustoria were deformed in many cases.
    • These layers include the epidermis, an exodermis in roots where it is differentiated, several layers of cortex cells, the endodermis, pericycle, xylem parenchyma cells and finally the vessels.
    • The pericycle and endodermis were both present, each as a single sheath of cells located between the cortex and stele.

Origin

Late 19th century: from Greek perikuklos 'spherical', from perikukloun 'encircle'.

 
 

Definition of pericycle in US English:

pericycle

nounˈperəˌsīk(ə)l
Botany
  • A thin layer of plant tissue between the endodermis and the phloem.

    Example sentencesExamples
    • These observations suggest that the cells in the pericycle of alloxan-treated plants are much more transcriptionally active than their control counterparts.
    • The pericycle forms the outermost layer of the central cylinder.
    • These layers include the epidermis, an exodermis in roots where it is differentiated, several layers of cortex cells, the endodermis, pericycle, xylem parenchyma cells and finally the vessels.
    • The pericycle and endodermis were both present, each as a single sheath of cells located between the cortex and stele.
    • In addition, the host pericycle and endodermis in contact with abortive haustoria were deformed in many cases.

Origin

Late 19th century: from Greek perikuklos ‘spherical’, from perikukloun ‘encircle’.

 
 
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更新时间:2024/9/20 8:08:30