Accumulation of mannitol in the cytoplasm and vacuole during the expansion of sepal cells associated with flower opening in Delphinium × belladonna cv. Bellamosum

Planta
Ryo NorikoshiKazuo Ichimura

Abstract

The role of mannitol differs from that of glucose, fructose and sucrose in sepal cell expansion associated with flower opening in Delphinium × belladonna. Sepals of Delphinium × belladonna are colored and much larger than the petals. To determine whether the role of mannitol in sepal growth associated with flower opening differs from those of ubiquitous metabolic sugars including glucose, fructose and sucrose, we investigated changes in cell number, subcellular concentrations of soluble carbohydrates, and osmotic potential in sepals during flower opening in Delphinium × belladonna cv. Bellamosum. The number of epidermal cells in the sepals did not increase from the stage when sepal pigmentation started, whereas the cell area increased during flower opening, indicating that petal growth during flower opening depends on cell expansion. Mannitol concentrations in the vacuole at three different stages were approximately 100 mM, which were much higher than the other carbohydrate concentrations, but they decreased slightly at open stage. In contrast, mannitol concentration in the cytoplasm was 56 mM at bud stage, but it increased to 104 mM at open stage. Glucose and fructose concentrations in the vacuole at open stage increased to 45...Continue Reading

References

Aug 1, 1973·Analytical Biochemistry·N Blumenkrantz, G Asboe-Hansen
Jun 1, 2000·Bioscience, Biotechnology, and Biochemistry·K IchimuraM Koketsu
Oct 1, 1994·Plant Physiology·JMH. Stoop, D. M. Pharr
May 4, 2004·Plant Physiology·Ling-Yun ZhangDa-Peng Zhang
Jul 1, 1988·Plant Physiology·S DamonA B Bennett
Jul 1, 1990·Plant Physiology·G E Welbaum, F C Meinzer
Oct 8, 2014·Annals of Botany·Léna BeauzamyArezki Boudaoud
Nov 1, 1989·The New Phytologist·Felix Keller, Philippe Matile

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