Suspension cells and cotyledons of Ricinus communis were compared as to their uptake properties for sugar and amino acids to reveal whether the previously reported sucrose-specificity of the cotyledon is a specific feature of the cotyledon or of the Ricinus cell in general. The experiments show that suspension cells have a higher hexose uptake activity at low sugar concentration than cotyledons, whereas sucrose cannot be taken up by suspension cells unless it is first hydrolyzed. Amino acids are taken up by suspension cells and by the cotyledons. It is concluded that the highly specific uptake of sucrose without hydrolysis is a special feature of certain specialized cells of the cotyledon, probably the phloem.

译文

:比较了蓖麻的悬浮细胞和子叶的糖和氨基酸摄取特性,以揭示先前报道的子叶的蔗糖特异性是子叶还是一般的蓖麻细胞的特定特征。实验表明,悬浮细胞在低糖浓度下具有比子叶更高的己糖摄取活性,而蔗糖除非先水解就不能被悬浮细胞吸收。氨基酸被悬浮细胞和子叶吸收。结论是,子叶的某些特化细胞(可能是韧皮部)的高度特异摄取不水解的蔗糖是其特殊特征。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录