The Activities of NAD Kinase and NADP Phosphatase and Some Characteristicsof NAD Kinase in Strawberry during Fruit Maturation

ACTA HORTICULTURAE SINICA ›› 2002, Vol. 29 ›› Issue (6): 575-576.

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The Activities of NAD Kinase and NADP Phosphatase and Some Characteristicsof NAD Kinase in Strawberry during Fruit Maturation

Gu Caiqin^1,2, Guan Junfeng², Xi Yufang¹, and Li Guangmin²

(¹ Agri-industry Food College, Zhej iang University , Hangzhou 310029, China; ²Institute of Agro-Physic, Plant Physiology and Biochemistry , Hebei Academy of Agriculture and Forestry Sciences , Shijiaz huang 050051, China)

Received:1900-01-01 Revised:1900-01-01 Online:2002-12-25 Published:2002-12-25

Abstract

Abstract: The act ivities of NAD kinase and NADP phosphatase and some characteristics of NAD kinase in strawberry fruits during maturation were studied. The results showed that from green to white stage, the activities of NAD kinase and NADP phosphatase increased, but decreased from white to pink stage and increased again from pink to red stage in strawberry fruits. The activity of NAD kinasewas inhibited significantly by Ca²⁺ and stimulated by EGTA (a calcium chelator) . The dependence degree of NAD kinase on ATP was increased with the maturation of strawberry fruits.

Key words: Strawberry, Fruit, Development, NAD kinase, NADP phosphatase, Calcium

CLC Number:

S 668. 4

Gu Caiqin;Guan Junfeng;Xi Yufang;and Li Guangmin. The Activities of NAD Kinase and NADP Phosphatase and Some Characteristicsof NAD Kinase in Strawberry during Fruit Maturation[J]. ACTA HORTICULTURAE SINICA, 2002, 29(6): 575-576.

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The Activities of NAD Kinase and NADP Phosphatase and Some Characteristicsof NAD Kinase in Strawberry during Fruit Maturation

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