a novel ring finger gene, sbrfp1, increases resistance to cold-induced sweetening of potato tubers论文.pdf
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FEBS Letters 587 (2013) 749–755
journal homepage: www.FEBSL
A novel RING finger gene, SbRFP1, increases resistance to cold-induced
sweetening of potato tubers
Huiling Zhang, Xun Liu, Jun Liu, Yongbin Ou, Yuan Lin, Meng Li, Botao Song ⇑, Conghua Xie ⇑
Key Laboratory of Horticultural Plant Biology (HAU), Ministry of Education; National Centre for Vegetable Improvement (Central China); Huazhong Agricultural University,
Wuhan 430070, China
a r t i c l e i n f o a b s t r a c t
Article history: The modulation of the activity of enzymes associated with carbohydrate metabolism is important
Received 30 October 2012 for potato cold-induced sweetening (CIS). A novel RING finger gene SbRFP1 was cloned and its
Revised 26 January 2013 expression was found to be cold-inducible in potato tubers of the CIS-resistant genotypes. Transfor-
Accepted 28 January 2013
mation of SbRFP1 in potatoes confirmed its role in inhibiting b-amylase and invertase activity, which
Available online 8 February 2013
consequently slowed down starch and sucrose degradation and the accumulation of reducing sug-
Edited by Julian Schroeder ars in cold stored tubers. These findings strongly suggest that SbRFP1 may function as a negative reg-
ulator of BAM1 and StvacINV1 to decelerate the accumulation of reducing sugars in the process of
potato CIS.
Keywords:
Potato 2013 Federation of European Biochemical Societies. Published by Elsevier B.V.
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