| 词汇 | mesophyll |
| 释义 | mesophyll noun[ U ] biology specializeduk /ˈmes.əʊ.fɪl/ us /ˈmez.oʊ.fɪl/ the part of a leaf between the two thin surface layers, containing the cells responsible for photosynthesis叶肉（叶片进行光合作用部位） Parts of plants axil bark bilobed blade bulb caning cascara sagrada corolla endodermis inflorescence knot pistil rooty rosella seed coat seed pod sessile sting taproot tubule Examples of mesophyllmesophyll Intracellular degradation was advanced in both the epidermal cells (illustrated) and in the underlying mesophyll. Also, the shade plants tended to have 1-2 cell layers in the palisade mesophyll compared with 2-3 layers in sun plants. However, the number of cell layers making up the palisade mesophyll remained a t two for both sun and shade plants. In contrast to leaf rust which attacks mesophyll cells, the interaction between wheat and wheat powdery mildew occurs in leaf epidermal cells. In contrast, they found late successional species to have lower rates of dark respiration, low mesophyll conductance and low light compensation points. In the mesophyll cells, affected parts were cell wall, chloroplasts, mithocondria and nucleus. The number of palisade mesophyll cell layers was 2-3 in shade plants, while for sun plants it was 3-4. The upper and lower mesophyll cells surrounding the gall chamber began to differentiate as sclerenchyma. However, the reorganized mesophyll parenchyma cells contained cytoplasm denser than the normal cells (fig. 5). The loose parenchymal cells are scattered throughout the fiber bundles and loose fibers, and they probably represent the mesophyll of intact stems. Undifferentiated mesophyll cells adjacent to the upper and lower epidermis had thicker walls and exhibited division activity. Thus, it is likely that mesophyll conductance can be improved in the near future. In this way, the female placed the egg between upper mesophyll cells. The local vegetation is montane semideciduous mesophyll forest, with a canopy height of 10- 15 m and dense undergrowth. Heliconia mathiasiae possessed a similar sun-leaf design but had thinner leaves, and mesophyll comprised slightly more than half of the leaf transection. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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