Comparison of cell wall components between Fragaria × ananassa and Fragaria chiloensis grown in Chile
Comparison of cell wall components between Fragaria × ananassa and Fragaria chiloensis grown in Chile
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智利草莓和智利草莓细胞壁成分比较
DOI：
10.1080/14620316.2002.11511513
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Y. Motomura
中科院分区：
文献类型：
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作者：
T. Nishizawa;S. Nagasawa;J. Retamales;A. Lavín;Y. Motomura
摘要对生长在智利中部的5个黄瓜品种(‘Chandler’、‘Seasscape’、‘Tudla’、‘Hokowase’和‘Reiko’)和两个陆地小种(‘94BAU-1A’和‘97PUR-1A’)的果实硬度和细胞壁组成进行了比较。红曲霉的果实比红曲霉小。果蝇和红豆杉的表皮组织坚实度差异不显著。然而，皮质部组织的硬度却显著低于皮质部组织，因此，皮质部组织和表皮组织之间的硬度差异显著大于皮质部组织之间的差异。‘灵子’和‘Hokowase’的钙含量较低，而其他品种的钙含量较高。红豆杉在这两个组之间显示出中间值。红豆杉细胞壁组分中总糖醛酸和中性糖的含量高于红豆杉，这主要是由于其在水溶组分中的浓度较高。红豆杉细胞壁组分中总糖醛酸的含量显著高于红豆杉，这主要是由于其水溶组分中的糖醛酸含量显著较高。非纤维素性中性糖，尤其是水中的阿拉伯糖、CDTA和Na2CO3可溶组分，均显著高于水华。另一方面，红曲霉CDTA-、Na2CO3-和KOH可溶组分中的半乳糖含量显著低于红曲霉。此外，红曲霉的纤维素含量也显著低于黑曲霉。细胞壁分析的结果表明，红豆杉的皮层较软可能是由于较低的纤维素含量、较高的果胶物质溶解率和/或中性糖分枝的组成差异所致。
Summary Fruit firmness and cell wall composition were compared among five cultivars of F. × ananassa (‘Chandler’, ‘Seascape’, ‘Tudla’, ‘Hokowase’ and ‘Reiko’) and two land races of F. chiloensis (‘94BAU-1A’ and ‘97PUR-1A’) grown in central Chile. Fruits of F. chiloensis were smaller than those of F. × ananassa. Firmness of epidermal tissue did not differ significantly between F. × ananassa and F. chiloensis. Firmness of cortical tissue, however, was significantly lower in F. chiloensis than in F.× ananassa and as a result, difference in the firmness between epidermal and cortical tissues was significantly greater in F. chiloensis than in F. × ananassa. Calcium concentration was low in ‘Reiko’ and ‘Hokowase’ while high in the other varieties of F. × ananassa. F. chiloensis showed intermediate values between these two groups. Higher levels of total uronic acid and neutral sugars in cell wall fractions of F. chiloensis as compared with F. × ananassa were mainly due to its high concentration in the water soluble fraction. Total uronic acid in cell wall fraction was significantly higher in F. chiloensis than in F. × ananassa, mainly due to significantly higher concentrations in the water-soluble fraction. Non-cellulosic neutral sugars, especially arabinose in the water, CDTA, and Na2CO3-soluble fractions were significantly higher in F. chiloensis than in F. × ananassa. On the other hand, galactose in the CDTA-, Na2CO3-, and KOH-soluble fractions was significantly lower in F. chiloensis than in F. × ananassa. Moreover, cellulose concentration of F. chiloensis was also significantly lower than that of F. × ananassa. Results obtained from cell wall analysis suggest that softer cortex in F. chiloensis might be due to either lower cellulose content, higher solubilization rate of pectic substances, and/or compositional differences in the branching of neutral sugars.