Real-time measurement of phloem turgor pressure in Hevea brasiliensis with a modified cell pressure probe.

ABSTRACT:

Background

Although the pressure flow theory is widely accepted for the transport of photoassimilates in phloem sieve elements, it still requires strong experimental validation. One reason for that is the lack of a precise method for measuring the real-time phloem turgor pressure from the sink tissues, especially in tree trunks.

Results

Taking the merits of Hevea brasiliensis, a novel phloem turgor pressure probe based on the state of the art cell pressure probe was developed. Our field measurements showed that the phloem turgor pressure probe can sensitively measure the real-time variation of phloem turgor pressure in H. brasiliensis but the calculation of phloem turgor pressure with xylem tension, xylem sap osmotic potential and phloem sap osmotic potential will under-esti

SUBMITTER: An F 

PROVIDER: S-EPMC5432816 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature