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Boron in Soils and Plants: Reviews
In the majority of plant species, B distribution between plant organs and the symptoms of B deficiency and toxicity indicate that B has restricted mobility. Nevertheless, B is present in phloem and is retranslocated in phloem, often in sufficient amounts to satisfy the demands of developing sink regions that do not readily transpire. In species that produce significant amounts of polyols in source leaves, boron is readily translocated as a consequence of the formation of B-polyol complexes.doi:10.1007/978-94-011-5580-9_7 fatcat:bnh7aes32jddpb6zzo2a7bq24u