B9对花生叶片ATP酶活性和光合产物运输的影响

The Effect of B_9 on the ATPase Activity and the Transport of Photosynthate in Peanut Leaf

After treated with 800 and 1200ppm B_9,peanut leaves became thick,the leaf colour be- came deep green and the plant height got shorter.The accumulation of starch and the con- tent of soluble sugar in leaves decreased significantly.At the same time,however,the ATPase activity of leaf tissue increased and the ATPase activity at the plasmalemma of mesophyll cell and at the plasmalemma of sieve element,eompanion cell and transfer cell in the phloem also increaced obviously.The results showed that the increase of photosynthesis and the rise of transport of carbohydrate were correlative to that B_9 could increase the ATPase activity of the plasmalemma of the mesophyll cell and the phloem cells of peanut leaf,and that the ATPase activity of phloem cell would correlate with active- ly loading of photosynthate into phloem.