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. 2010 Jan 27;152(3):1748–1759. doi: 10.1104/pp.109.148791

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© 2010 American Society of Plant Biologists

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Figure 7. — A, Water flow rate through the stem was greatly reduced soon after the addition of OGAs (average degree of polymerization [DP] = 8.56), and it practically stopped about 1.7 h after OGA introduction. Some uronic acid was detected in the two fractions of the eluent collected after the addition of OGAs (the first of these fractions was completed 24 min after the introduction of OGAs). The analyses of total uronic acid and uronic acid reducing ends in the collected eluent fractions indicated an average DP of less than 2, which suggests that the larger oligomers in the OGA preparation were retained within the stem, presumably at the PMs. B, PGA (average DP = 100) completely stopped the flow through the explant about 0.5 h after its introduction. The addition times of OGAs and PGA are indicated by the vertical bars.