Department of Biological Sciences, State University of New York at Buffalo, New York 14260.
Plant Physiol. 1984 Feb;74(2):252-5. doi: 10.1104/pp.74.2.252.
Chara corallina Klein ex Willd. wm. R.D.W. (= C. australis R. Br.), a fresh water alga, maintains a constant internal osmotic pressure when external osmotic pressure is increased. This results in a decrease in turgor pressure. Chara osmoregulates effectively in the presence of high CaCl(2) and raffinose, but is less efficient in response to increased NaCl. Decreasing external pH from 7 to 5 results in a decrease in turgor, but increasing it to values as high as 9 has no effect. Increasing the daily amount of light from 0.5 to 24 hours has no effect on turgor.
角叉菜(Klein ex Willd. wm. R.D.W.),一种淡水藻类,当外部渗透压增加时,其内部渗透压保持恒定。这导致膨压降低。角叉菜在高氯化钙和棉子糖存在的情况下能够有效地进行渗透调节,但对增加的氯化钠的响应效率较低。将外部 pH 值从 7 降低到 5 会导致膨压降低,但将其增加到高达 9 的值没有影响。将每日光照量从 0.5 小时增加到 24 小时对膨压没有影响。