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词汇 stomate
释义

Definition of stomate in English:

stomate

noun ˈstəʊmeɪtˈstōmāt
Botany
  • another term for stoma
    Example sentencesExamples
    • Quercus rubra leaves have about 150 million stomates per m (= N) and stomatal pores with a major axis of about 10.7 m (= a).
    • Some starch can also be seen in the guard cells of stomates.
    • This can be due to a reduction in light interception as leaf expansion is reduced or as leaves senesce, and to reductions in C fixation per unit leaf area as stomates close or as photo-oxidation damages the photosynthetic mechanism.
    • This capacity is due to the presence of stomates on both leaf surfaces, permeability of tissues for CO 2 diffusion and an intense Rubisco activity.
    • This makes it unlikely that stomates closed because of a leaf water deficit and raises the possibility of regulatory signals coming from the roots.

Origin

Mid 19th century: apparently an English singular of stomata.

Definition of stomate in US English:

stomate

nounˈstōmāt
Botany
  • another term for stoma
    Example sentencesExamples
    • Quercus rubra leaves have about 150 million stomates per m (= N) and stomatal pores with a major axis of about 10.7 m (= a).
    • Some starch can also be seen in the guard cells of stomates.
    • This capacity is due to the presence of stomates on both leaf surfaces, permeability of tissues for CO 2 diffusion and an intense Rubisco activity.
    • This makes it unlikely that stomates closed because of a leaf water deficit and raises the possibility of regulatory signals coming from the roots.
    • This can be due to a reduction in light interception as leaf expansion is reduced or as leaves senesce, and to reductions in C fixation per unit leaf area as stomates close or as photo-oxidation damages the photosynthetic mechanism.

Origin

Mid 19th century: apparently an English singular of stomata.

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