| 释义 |
Definition of sieve tube in English: sieve tubenoun Botany A series of sieve tube elements placed end to end to form a continuous tube. Example sentencesExamples - In the beans, the needle-shaped protein complexes are situated in so-called sieve tubes, where they control the plant's flow of sugar-bearing fluid.
- Other components, such as sieve tubes and parenchyma cells, are not efficient axial light conductors.
- Inside the phloem, it seems to be a common feature that companion cells are the principal receivers of the translocated photosynthates from the shoot through sieve tubes.
- The sap is well protected from herbivores by a thick layer of bark, and by an injury-induced response that releases proteins to prevent continued bleeding from injured sieve tubes.
- Resistivity dramatically increases at the end of each sieve tube when passing through the pores, and it is unlikely that this effect could be described by a simple equation for the pathway from source to sink compartments.
Definition of sieve tube in US English: sieve tubenoun Botany A series of sieve tube elements placed end to end to form a continuous tube. Example sentencesExamples - In the beans, the needle-shaped protein complexes are situated in so-called sieve tubes, where they control the plant's flow of sugar-bearing fluid.
- Resistivity dramatically increases at the end of each sieve tube when passing through the pores, and it is unlikely that this effect could be described by a simple equation for the pathway from source to sink compartments.
- Inside the phloem, it seems to be a common feature that companion cells are the principal receivers of the translocated photosynthates from the shoot through sieve tubes.
- The sap is well protected from herbivores by a thick layer of bark, and by an injury-induced response that releases proteins to prevent continued bleeding from injured sieve tubes.
- Other components, such as sieve tubes and parenchyma cells, are not efficient axial light conductors.
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