von Willert D J, Thomas D A, Lobin W, Curdts E
Lehrstuhl für Pflanzenökologie der Universität Bayreuth, Am Birkengut, D-8580, Bayreuth, Federal Republic of Germany.
Oecologia. 1977 Mar;29(1):67-76. doi: 10.1007/BF00345363.
Overnight accumulation of malate, citrate, and isocitrate in a large number of species of Mesembryanthemaceae grown under identical environmental conditions was studied. Of the 27 species investigated, 24 showed malate accumulation, which in 3 cases was accompanied by considerable overnight accumulation of citrate. In the leaves of the same plants, the Na, K, Cl, SO, and PO contents were determined. Although the plants were not exposed to substrates of high NaCl content, they exhibited extraordinarily high levels of Na and Cl. All plants accumulated, much more Na than K. No readily discernible correlation between the amount of any particular ion and the extend of CAM was found. It is concluded that halophilism and CAM are widespread phenomena in the family of Mesembryanthemaceae that possess ecologic significance.
对大量在相同环境条件下生长的番杏科植物中苹果酸、柠檬酸和异柠檬酸的夜间积累情况进行了研究。在所研究的27个物种中，24个表现出苹果酸积累，其中3个案例还伴随着大量的柠檬酸夜间积累。在同一植株的叶片中，测定了钠、钾、氯、硫酸根和磷酸根的含量。尽管这些植物未接触高氯化钠含量的基质，但它们表现出极高的钠和氯含量。所有植物积累的钠都远多于钾。未发现任何特定离子的含量与景天酸代谢（CAM）程度之间有明显的相关性。得出的结论是，嗜盐性和景天酸代谢是番杏科中广泛存在的现象，具有生态学意义。
