TY - JOUR

T1 - Seasonal Variation of Mono, Di and Polysaccharides in British Bluebells (Hyacinthoides Non-Scripta)

AU - Raheem, Dotsha

AU - Thoss, Vera

PY - 2016

Y1 - 2016

N2 - British bluebells (Hyacinthoides non-scripta (L.) Chouard ex Rothm.) werestudied for their carbohydrate content, phenology and biomass allocation andthe associated physiological changes. Carbohydrate content of different partsof the plant, including roots, bulbs, leaves, scapes and flowers, were studied astotal non-structural carbohydrates. Biomass and carbohydrate analysis resultsshowed greater allocation to bulbs compared to any other vegetative part.Analysis of fructans in the bulbs showed the presence of large proportions of thepolysaccharide comprising about 77% DW in mid-June 2014. The lowest fructancontent of 41% DW was found at the start of re-growth in January-February2015. The mono and disaccharide pool in the bulbs showed high concentrationsat the start of the growth period suggesting depolymerisation of fructans at thisstage and their mobilisation to the growing shoots. MALDI-TOF analysis ofbulb fructans showed the dominance of DP3 and DP4 chain fructans with thepresence of other longer chains up to DP9 at the end of the vegetative stage inJuly until shoot emergence in March.

AB - British bluebells (Hyacinthoides non-scripta (L.) Chouard ex Rothm.) werestudied for their carbohydrate content, phenology and biomass allocation andthe associated physiological changes. Carbohydrate content of different partsof the plant, including roots, bulbs, leaves, scapes and flowers, were studied astotal non-structural carbohydrates. Biomass and carbohydrate analysis resultsshowed greater allocation to bulbs compared to any other vegetative part.Analysis of fructans in the bulbs showed the presence of large proportions of thepolysaccharide comprising about 77% DW in mid-June 2014. The lowest fructancontent of 41% DW was found at the start of re-growth in January-February2015. The mono and disaccharide pool in the bulbs showed high concentrationsat the start of the growth period suggesting depolymerisation of fructans at thisstage and their mobilisation to the growing shoots. MALDI-TOF analysis ofbulb fructans showed the dominance of DP3 and DP4 chain fructans with thepresence of other longer chains up to DP9 at the end of the vegetative stage inJuly until shoot emergence in March.

M3 - Article

VL - 1

JO - Journal of Plant Chemistry and Ecophysiology

JF - Journal of Plant Chemistry and Ecophysiology

SN - 2572-4371

IS - 1

M1 - 1005

ER -