H+-ATPase and H+-PPase activities of plasmalemma and tonoplast and sugar accumulation in fruit of Ziziphus jujuba cv.Lingwuchangzao
Author(s): ZHANG Ying-Cai?, CAO Jin-Xia, JING Hong-Xia
Pages: 641-647
Year: 2015 Issue: 5
Journal: Guihaia
Keyword: Ziziphus jujuba cv.Lingwuchangzao; plasmalemma; tonoplast; sugar accu-mulation;
Abstract: In order to study the relation between the H+-ATPase and H+-PPase activities of plasmalemma and tono-plast and the sugar accumulation in fruit of Ziziphus jujuba cv.Lingwuchangzao,the H+-ATPase and H+-PPase activities of plasmalemma and tonoplast and the sugar content in fruit were determined with different developmental periods fruit as materials.The results were as follows:(1)The fruit mainly accumulated glucose and fructose before the second rapid growth period,sucrose accumulated rapidly after the second rapid growth period,at the same time, the content of glucose and fructose decreased gradually,the mature period fruit mainly accumulated sucrose.(2)The plasmalemma H+-ATPase activity was the lowest in the slower growth period S1 and the highest in the first rapid growth period,but it droped in the slower growth period S2 and rose to higher in the second rapid growth period and droped substantially in the mature period.(3)The variation trend of tonoplast H+-ATPase activity was similar to tonoplast H+-PPase activity during fruit development.Tonoplast H+-ATPase and H+-PPase activities were lower in the slower growth period S1 ,they droped slowly to the lowest from the slower growth period S1 to the first rapid growth period and increased gradually from the first rapid growth period,tonoplast H+-PPase activity was higher throughout than tonoplast H+-ATPase activity except the second rapid growth period.Hence,the plasmalemma H+-ATPase and the tonoplast H+-ATPase and H+-PPase played an important regulative role in secondary active transport sugar across membrane in fruit of Z.jujuba cv.Lingwuchangzao.
Pages: 641-647
Year: 2015 Issue: 5
Journal: Guihaia
Keyword: Ziziphus jujuba cv.Lingwuchangzao; plasmalemma; tonoplast; sugar accu-mulation;
Abstract: In order to study the relation between the H+-ATPase and H+-PPase activities of plasmalemma and tono-plast and the sugar accumulation in fruit of Ziziphus jujuba cv.Lingwuchangzao,the H+-ATPase and H+-PPase activities of plasmalemma and tonoplast and the sugar content in fruit were determined with different developmental periods fruit as materials.The results were as follows:(1)The fruit mainly accumulated glucose and fructose before the second rapid growth period,sucrose accumulated rapidly after the second rapid growth period,at the same time, the content of glucose and fructose decreased gradually,the mature period fruit mainly accumulated sucrose.(2)The plasmalemma H+-ATPase activity was the lowest in the slower growth period S1 and the highest in the first rapid growth period,but it droped in the slower growth period S2 and rose to higher in the second rapid growth period and droped substantially in the mature period.(3)The variation trend of tonoplast H+-ATPase activity was similar to tonoplast H+-PPase activity during fruit development.Tonoplast H+-ATPase and H+-PPase activities were lower in the slower growth period S1 ,they droped slowly to the lowest from the slower growth period S1 to the first rapid growth period and increased gradually from the first rapid growth period,tonoplast H+-PPase activity was higher throughout than tonoplast H+-ATPase activity except the second rapid growth period.Hence,the plasmalemma H+-ATPase and the tonoplast H+-ATPase and H+-PPase played an important regulative role in secondary active transport sugar across membrane in fruit of Z.jujuba cv.Lingwuchangzao.
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