In the sieve elements, which one of the following is the most likely function of P-proteins ?

Question

In the sieve elements, which one of the following is the most likely function of P-proteins ? (A) deposition of callose on sieve plates (B) providing energy for active translocation (C) autolytic enzymes (D) sealing mechanism on wounding

Tardigrade Admin · Accepted Answer

In most angiospermic plants, sieve tube-elements of phloem, are P-protein, later is found in all dicots and in many monocots but it is absent in gymnosperms and cryptogams.
The main function of P-protein is in sealing off damaged sieve elements by plugging up sieve plate pores.

Q. In the sieve elements, which one of the following is the most likely function of P-proteins ?

deposition of callose on sieve plates

providing energy for active translocation

autolytic enzymes

sealing mechanism on wounding

In most angiospermic plants, sieve tube-elements of phloem, are P-protein, later is found in all dicots and in many monocots but it is absent in gymnosperms and cryptogams. The main function of P-protein is in sealing off damaged sieve elements by plugging up sieve plate pores.

In most angiospermic plants, sieve tube-elements of phloem, are P-protein, later is found in all dicots and in many monocots but it is absent in gymnosperms and cryptogams.
The main function of P-protein is in sealing off damaged sieve elements by plugging up sieve plate pores.