QUALITATIVE AND QUANTITATIVE EFFECTS OF ACID MISTING AND 2 AIR-POLLUTANTS ON FOLIAR STRUCTURES OF LIRIODENDRON-TULIPIFERA

被引:17
作者
CRANG, RE [1 ]
MCQUATTIE, CJ [1 ]
机构
[1] US FOREST SERV, NE FOREST EXPT STN, DELAWARE, OH 43015 USA
来源
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE | 1986年 / 64卷 / 06期
关键词
D O I
10.1139/b86-170
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
One-year-old seedlings of Liriodendron tulipifera (yellow poplar) were exposed to a daily misting regime at pH levels of 5.6, 4.6, 3.6, or 2.6 for a period of 8 weeks. Identical misting conditions supplemented with either a 0.1 ppm fumigation of ozone or NO2 were established for additional treatments. Leaf samples were prepared for light and transmission electron microscopy and light micrographs were used for quantitative analyses of transectional cellular and air-space areas. Leaves exposed to acid misting alone exhibited a cellular collapse at pH 2.6. With increasing acidity, a steady decline in mesophyll air space, an increase in dense inclusion bodies, and a decline in plastid starch content were observed. Plants that received supplemental ozone fumigation during misting exhibited cellular swelling at all pH levels and an increase in total mesophyll area from pH 5.6 to 3.6. While mesophyll cell transectional areas were virtually unchanged from pH 3.6 to 2.6, the air space was significantly reduced. Distinctive differences in apparent cell wall thickness were noted between palisade and spongy cells at pH 3.6 and 2.6. Leaves exposed to NO2 fumigation plus mist macroscopically appeared vigorous and generally showed increased blade thickness with increasing acidity primarily because of changes in mesophyll cell content. Chloroplasts showed prominent stroma protrusions into the cytoplasm. Thus, this study reveals distinctively different quantitative and morphological foliar responses to the misting and fumigation regimes.
引用
收藏
页码:1237 / 1243
页数:7
相关论文
共 31 条
[1]   ACID-RAIN EFFECTS ON FOLIAR HISTOLOGY OF ARTEMISIA-TILESII [J].
ADAMS, CM ;
DENGLER, NG ;
HUTCHINSON, TC .
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE, 1984, 62 (03) :463-474
[2]  
BECK DE, 1981, AGR HDB USDA, V583
[3]   ACID FOG EFFECTS ON YELLOW POPLAR LEAF MORPHOLOGY [J].
CRANG, RE ;
ROBINSON, SG ;
NOBLE, RD ;
DOCHINGER, LS .
MICRON, 1983, 14 (01) :75-76
[4]  
DOLZMANN P, 1966, Z PFLANZENPHYSIOL, V55, P165
[5]  
DUCHELLE SF, 1982, WATER AIR SOIL POLL, V12, P363
[6]   FOLIAR RESPONSE OF 6 CLONES OF HYBRID POPLAR [J].
EVANS, LS ;
GMUR, NF ;
DACOSTA, F .
PHYTOPATHOLOGY, 1978, 68 (06) :847-856
[7]   DIFFERENTIAL RESPONSES OF PLANT FOLIAGE TO SIMULATED ACID RAIN [J].
EVANS, LS ;
CURRY, TM .
AMERICAN JOURNAL OF BOTANY, 1979, 66 (08) :953-962
[8]   BIOLOGICAL EFFECTS OF ACIDITY IN PRECIPITATION ON VEGETATION - A REVIEW [J].
EVANS, LS .
ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 1982, 22 (02) :155-169
[9]  
EVANS LS, 1980, 12TH P ROCH INT C EN, P239
[10]   EFFECTS OF SIMULATED ACID RAIN ON PHASEOLUS-VULGARIS-L (FABACEAE) [J].
FERENBAUGH, RW .
AMERICAN JOURNAL OF BOTANY, 1976, 63 (03) :283-288