Carbohydrate enzymes related to cold-induced sweetening and tuber storage in potato genotypes

The roles of carbohydrate enzymes in cold-induced sweetening (CIS) and long-term tuber storage are not fully understood. This study analyzed enzyme activities in 'Lady Rosetta' (CIS-resistant and storable), 'Kufri FryoM' (CIS-resistant with regular storage), and 'MS/8 1148&#...

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Bibliographic Details
Published in:International journal of vegetable science 2024-05, Vol.30 (3), p.225-248
Main Authors: Aggarwal, Nidhi, Dhillon, Prabhsangam Kaur, Zhawar, Vikramjit Kaur, Sharma, Sat Pal
Format: Article
Language:English
Subjects:
Carbohydrates
Cold storage
Enzymatic activity
Enzymes
Genotypes
Phosphorylase
Phosphorylases
Potatoes
Pyrophosphorylase
Solanum tuberosum
Starch
Starch phosphorylase
Starch synthase
Sucrose
Sucrose phosphate synthase
Sucrose synthase
synthase
tuber end
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Summary:The roles of carbohydrate enzymes in cold-induced sweetening (CIS) and long-term tuber storage are not fully understood. This study analyzed enzyme activities in 'Lady Rosetta' (CIS-resistant and storable), 'Kufri FryoM' (CIS-resistant with regular storage), and 'MS/8 1148' (CIS-susceptible with regular storage) potatoes stored at 4°C for 0, 20, 120, and 150 days. CIS increased until 20 days, particularly in the basal ends of 'MS/8 1148.' Enzymes like sucrose synthase (breakdown), starch phosphorylase, and UDP-glucose pyro phosphorylase were positively correlated with CIS in 'MS/8 1148.' Starch levels were lower in 'MS/8 1148' at 20 days but increased in other genotypes. During extended storage, bound starch synthase and starch phosphorylase increased steadily up to 150 days, while soluble starch synthase peaked at 120 days. Sucrose phosphate synthase emerged as a critical marker for CIS resistance. Bound starch synthase and starch phosphorylase were identified as essential markers for long-term storage in potatoes.
ISSN:1931-5260
1931-5279
DOI:10.1080/19315260.2024.2357800