Abstract：
:In our preliminary study, the ripe fruits of two highbush blueberry (Vaccinium corymbosum L.) cultivars, cv 'Berkeley' and cv 'Bluecrop', were found to contain different levels of ascorbic acid. However, factors responsible for these differences are still unknown. In the present study, ascorbic acid content in fruits was compared with expression profiles of ascorbic acid biosynthetic and recycling genes between 'Bluecrop' and 'Berkeley' cultivars. The results indicated that the l-galactose pathway was the predominant route of ascorbic acid biosynthesis in blueberry fruits. Moreover, higher expression levels of the ascorbic acid biosynthetic genes GME, GGP, and GLDH, as well as the recycling genes MDHAR and DHAR, were associated with higher ascorbic acid content in 'Bluecrop' compared with 'Berkeley', which indicated that a higher efficiency ascorbic acid biosynthesis and regeneration was likely to be responsible for the higher ascorbic acid accumulation in 'Bluecrop'.
journal_name
Food Chemjournal_title
Food chemistryauthors
Liu F,Wang L,Gu L,Zhao W,Su H,Cheng Xdoi
10.1016/j.foodchem.2015.05.036subject
Has Abstractpub_date
2015-12-01 00:00:00pages
399-405eissn
0308-8146issn
1873-7072pii
S0308-8146(15)00767-0journal_volume
188pub_type
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