Definition of scutellum in English:

scutellum

nounPlural scutella skjʊˈtɛləmˌsk(j)uˈtɛləm

Zoology Botany

1A small structure shaped like a shield.
1. 1.1 A modified cotyledon in the embryo of a grass seed.
  Example sentencesExamples
  The ENGase activity was almost equally distributed in the endosperm, the radicle and the scutellum.
  An aspartic proteinase was also found in the PB of scutellum cells in dry barley grains.
  Peptide transport activity appears in the scutellum of barley seeds after 6-12 h imbibition, before any visible signs of germination, and increases rapidly to a maximum around 24 h imbibition.
  Protein reserves in the cereal endosperm are sequentially degraded to small peptides and amino acids during germination and these are translocated across the scutellum to support growth of the embryo.
  Early studies on sucrose mobilization from the vacuole of germinating maize scutellum cells alluded to the likely possibility of SuSy being tonoplast associated.
2. 1.2 The third dorsal sclerite in each thoracic segment of an insect.
  Example sentencesExamples
  This reward-lacking orchid is pollinated either by workers or drones of Apis cerana japonica which fix pollinaria on the scutellum.
  Then, the arcuate viscidium firmly embraces and adheres on the bee scutellum and the pollinarium is removed.
  The deposition of pollinaria on the scutellum of bees clearly enhances the chances of cross-pollination, since it is very difficult for these insects to groom and remove the pollinaria from this region.
  In all these species, the broad arcuate viscidium firmly embraces the pollinator scutellum when the insect leaves the flower.

Derivatives

scutellar

adjective sk(j)uːˈtɛləˌsk(j)uˈtɛlər

Botany Zoology

Relating to a scutellum.
the flies have four scutellar bristles
Example sentencesExamples
- proteins in barley scutellar tissue
- Seminal roots do not form a coleorhiza since the scutellar node tissue is already differentiated when seminal roots emerge and can easily be penetrated.
- Two other cysteine proteases, EPA and EPB, with homology to mammalian cathepsin L, were also induced by GA in aleurones, and seemed to be expressed only in the seed scutellar epithelium and in aleurone layers upon germination.
- The subcellular localization of these proteins to the plasma membrane was demonstrated by thiol-affinity labelling of high purity plasma membrane vesicles isolated from barley scutellar tissue.

scutellate

adjective ˈskjuːtələt

Botany Zoology

scutellation

noun skjuːtəˈleɪʃ(ə)n

Botany Zoology

Origin

Mid 18th century: modern Latin, diminutive of Latin scutum 'shield'.

Definition of scutellum in US English:

scutellum

nounˌsk(y)o͞oˈteləmˌsk(j)uˈtɛləm

Botany Zoology

1A small structure shaped like a shield.
1. 1.1 A modified cotyledon in the embryo of a grass seed.
  Example sentencesExamples
  Peptide transport activity appears in the scutellum of barley seeds after 6-12 h imbibition, before any visible signs of germination, and increases rapidly to a maximum around 24 h imbibition.
  Protein reserves in the cereal endosperm are sequentially degraded to small peptides and amino acids during germination and these are translocated across the scutellum to support growth of the embryo.
  The ENGase activity was almost equally distributed in the endosperm, the radicle and the scutellum.
  Early studies on sucrose mobilization from the vacuole of germinating maize scutellum cells alluded to the likely possibility of SuSy being tonoplast associated.
  An aspartic proteinase was also found in the PB of scutellum cells in dry barley grains.
2. 1.2 The third dorsal sclerite in each thoracic segment of an insect.
  Example sentencesExamples
  The deposition of pollinaria on the scutellum of bees clearly enhances the chances of cross-pollination, since it is very difficult for these insects to groom and remove the pollinaria from this region.
  This reward-lacking orchid is pollinated either by workers or drones of Apis cerana japonica which fix pollinaria on the scutellum.
  Then, the arcuate viscidium firmly embraces and adheres on the bee scutellum and the pollinarium is removed.
  In all these species, the broad arcuate viscidium firmly embraces the pollinator scutellum when the insect leaves the flower.

Origin

Mid 18th century: modern Latin, diminutive of Latin scutum ‘shield’.

单词	scutellum
释义	Definition of scutellum in English: scutellum nounPlural scutella skjʊˈtɛləmˌsk(j)uˈtɛləm Zoology Botany 1A small structure shaped like a shield. 1.1 A modified cotyledon in the embryo of a grass seed. Example sentencesExamples The ENGase activity was almost equally distributed in the endosperm, the radicle and the scutellum. An aspartic proteinase was also found in the PB of scutellum cells in dry barley grains. Peptide transport activity appears in the scutellum of barley seeds after 6-12 h imbibition, before any visible signs of germination, and increases rapidly to a maximum around 24 h imbibition. Protein reserves in the cereal endosperm are sequentially degraded to small peptides and amino acids during germination and these are translocated across the scutellum to support growth of the embryo. Early studies on sucrose mobilization from the vacuole of germinating maize scutellum cells alluded to the likely possibility of SuSy being tonoplast associated. 1.2 The third dorsal sclerite in each thoracic segment of an insect. Example sentencesExamples This reward-lacking orchid is pollinated either by workers or drones of Apis cerana japonica which fix pollinaria on the scutellum. Then, the arcuate viscidium firmly embraces and adheres on the bee scutellum and the pollinarium is removed. The deposition of pollinaria on the scutellum of bees clearly enhances the chances of cross-pollination, since it is very difficult for these insects to groom and remove the pollinaria from this region. In all these species, the broad arcuate viscidium firmly embraces the pollinator scutellum when the insect leaves the flower. Derivatives scutellar adjective sk(j)uːˈtɛləˌsk(j)uˈtɛlər Botany Zoology Relating to a scutellum. the flies have four scutellar bristles Example sentencesExamples proteins in barley scutellar tissue Seminal roots do not form a coleorhiza since the scutellar node tissue is already differentiated when seminal roots emerge and can easily be penetrated. Two other cysteine proteases, EPA and EPB, with homology to mammalian cathepsin L, were also induced by GA in aleurones, and seemed to be expressed only in the seed scutellar epithelium and in aleurone layers upon germination. The subcellular localization of these proteins to the plasma membrane was demonstrated by thiol-affinity labelling of high purity plasma membrane vesicles isolated from barley scutellar tissue. scutellate adjective ˈskjuːtələt Botany Zoology scutellation noun skjuːtəˈleɪʃ(ə)n Botany Zoology Origin Mid 18th century: modern Latin, diminutive of Latin scutum 'shield'. Definition of scutellum in US English: scutellum nounˌsk(y)o͞oˈteləmˌsk(j)uˈtɛləm Botany Zoology 1A small structure shaped like a shield. 1.1 A modified cotyledon in the embryo of a grass seed. Example sentencesExamples Peptide transport activity appears in the scutellum of barley seeds after 6-12 h imbibition, before any visible signs of germination, and increases rapidly to a maximum around 24 h imbibition. Protein reserves in the cereal endosperm are sequentially degraded to small peptides and amino acids during germination and these are translocated across the scutellum to support growth of the embryo. The ENGase activity was almost equally distributed in the endosperm, the radicle and the scutellum. Early studies on sucrose mobilization from the vacuole of germinating maize scutellum cells alluded to the likely possibility of SuSy being tonoplast associated. An aspartic proteinase was also found in the PB of scutellum cells in dry barley grains. 1.2 The third dorsal sclerite in each thoracic segment of an insect. Example sentencesExamples The deposition of pollinaria on the scutellum of bees clearly enhances the chances of cross-pollination, since it is very difficult for these insects to groom and remove the pollinaria from this region. This reward-lacking orchid is pollinated either by workers or drones of Apis cerana japonica which fix pollinaria on the scutellum. Then, the arcuate viscidium firmly embraces and adheres on the bee scutellum and the pollinarium is removed. In all these species, the broad arcuate viscidium firmly embraces the pollinator scutellum when the insect leaves the flower. Origin Mid 18th century: modern Latin, diminutive of Latin scutum ‘shield’.
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