Carbohydrate Storage and Re-Mobilization in Asparagus: Studies Using Dry Weight Changes, C-14 and High Pressure Liquid Chromatography

Woolley, D.J.; Hughes, Arwel; Nichols, M. A.

doi:10.17660/actahortic.1999.479.42

Cited by 10 publications

(7 citation statements)

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“…Sucrose is the major carbo-hydrate accumulated in the cladophyll tissue during the photoperiod and starch is a minor storage carbohydrate (Scott et al 1939, King et al 1995. The majority of fixed carbon is exported to the storage root, and a large proportion of total assimilate is required for both new storage root development and storage during the fern growth season (Haynes 1987, Woolley et al 1999. A high proportion of assimilate partitioning into storage roots has been observed in previous asparagus studies (Tiedjens 1924, Benson and Takatori 1980, Wilcox-Lee and Drost 1990.…”

Section: Introductionmentioning

confidence: 80%

“…Mature cladophylls directly facing the sun were used. Photosynthetic assimilates, at this stage, were considered to be mainly exported to the storage root (Woolley et al. 1999), which allowed assimilate fluxes to be studied in relation to assimilate export.…”

Section: Methodsmentioning

confidence: 99%

“…1995). The majority of fixed carbon is exported to the storage root, and a large proportion of total assimilate is required for both new storage root development and storage during the fern growth season (Haynes 1987, Woolley et al. 1999).…”

Section: Introductionmentioning

confidence: 99%

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Carbon assimilation, partitioning and export in mature cladophylls of two asparagus (Asparagus officinalis) cultivars with contrasting yield

Guo

Jermyn

Turnbull

2002

Physiologia Plantarum

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To assess the physiological aspects underpinning cultivar difference in asparagus (Asparagus officinalis L.) yield, diel carbon exchange, carbon partitioning and export and sucrose phosphate synthase (SPS) activity were examined in mature cladophyll tissue of two asparagus cultivars (ASP-69 and ASP-03) under field conditions. Both cultivars exhibited similar diel patterns in carbon exchange rate (CER) and carbohydrate partitioning. Rates of carbon export estimated from CER and dry mass changes were the highest at midday and coincided with maximum assimilation rate. Carbon export accounted for about 74% of carbon fixation during the photoperiod. No diel fluctuations were observed in SPS activity in either cultivar. A positive correlation between day CER and carbon export rate (r2 = 0.87) was found and this relationship did not differ between the two cultivars studied. The greater carbon export rate measured in the high-yielding cultivar (ASP-69) was associated with significantly higher CER in comparison to the low-yielding cultivar (ASP-03). However, a correlation between sucrose concentration and carbon export rate did not exist. Biochemical evidence indicated that the greater CER in ASP-69 was associated with a significantly greater SPS activity (P 0.05). Phloem 14C exudate analysis revealed that 14C flux out of cladophyll tissue in ASP-69 was significantly greater than in ASP-03. These results indicate a feed-forward effect of rate of photosynthesis on assimilate export in the two cultivars studied.

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Section: Introductionmentioning

confidence: 80%

Section: Methodsmentioning

confidence: 99%

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Carbon assimilation, partitioning and export in mature cladophylls of two asparagus (Asparagus officinalis) cultivars with contrasting yield

Guo

Jermyn

Turnbull

2002

Physiologia Plantarum

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“…After hydrolysis, fructans are used for the formation of new organs such as spears, shoots and roots. Carbohydrates stored in roots during the previous assimilation season were confirmed to be utilized in spear growth (Benson and Takatori 1980, Shelton and Lacy 1980, Wooley et al 1999. Sugar content was not dependent on plant age.…”

Section: Resultsmentioning

confidence: 94%

Plant age effect on asparagus yielding in terms of carbohydrate balance

Krzesiński¹,

Gąsecka

Stachowiak

et al. 2008

Folia Horticulturae

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In order to examine the effect of plant age on asparagus yielding, the number and weight of spears were analyzed. The experiment was carried out on 1-, 4-and 7-year-old plants in the aeroponic system with recirculation. The results showed that the spear number and thus also the yield were not plant age dependent, while spear diameter and their weight were. Taking into account both crown weight and the age of plants, a 26% variation in spear diameter and a 27% variation in mean spear weight were explained. Determination of dry weight and carbohydrate contents in storage roots showed these traits to be independent of asparagus plant age, except for total carbohydrate content per plant. During harvest dry weight, % Brix, sucrose, fructan and total carbohydrates contents losses were also recorded.

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“…Assimilate produced during summer is firstly translocated in storage roots and subsequently utilized in vegetative growth during the next year harvest (Robb 1984, Haynes 1987. Spear production in Asparagus officinalis is also strongly dependent on factors such as temperature during harvest and the length of the assimilation period (Nichols & Wooley 1985, Wooley et al 1999. Prolongation of harvest leads to excessive carbohydrate depletion of roots, a reduced bud number and delayed post harvest carbohydrate accumulation (Knaflewski & KrzesiĔski 2002, Paschold et al 2002.…”

Section: Introductionmentioning

confidence: 99%

Correlations Between Asparagus Crop and the Year of Cropping, Day of Harvest, Sugar Contents in Storage Roots and Spears and Air Temperature

Gąsecka

Stachowiak

Krzesiński

et al. 2008

Journal of Fruit and Ornamental Plant Research

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Correlations Between Asparagus Crop and the Year of Cropping, Day of Harvest, Sugar Contents in Storage Roots and Spears and Air Temperature The study, carried out at the "Marcelin" Experimental Station in Poznan during harvest seasons 2000-2002, was focused on the determination of the correlation between daily yield of green asparagus (Asparagus officinalis L.) and soluble sugar contents in spears and storage roots, temperature, the year of cropping and day of harvest. A positive correlation between daily yield and the year of harvest, daily fructose content in storage roots and spears, sucrose content in spears and temperature was documented, in contrast to the negative correlation with glucose and sucrose contents in roots, glucose content in spears and daily yield.

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Carbohydrate Storage and Re-Mobilization in Asparagus: Studies Using Dry Weight Changes, C-14 and High Pressure Liquid Chromatography

Cited by 10 publications

References 0 publications

Carbon assimilation, partitioning and export in mature cladophylls of two asparagus (Asparagus officinalis) cultivars with contrasting yield

Carbon assimilation, partitioning and export in mature cladophylls of two asparagus (Asparagus officinalis) cultivars with contrasting yield

Plant age effect on asparagus yielding in terms of carbohydrate balance

Correlations Between Asparagus Crop and the Year of Cropping, Day of Harvest, Sugar Contents in Storage Roots and Spears and Air Temperature

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