Evaluation of air pollution phytotoxicity downwind of a phosphate fertilizer factory in India.
The effects of air pollution on plants downwind of a fertilizer factory at Udaipur, India, were studied using three woody perennials. Seedlings of these species including a shrub (Carissa carandas L.), a leguminous avenue tree (Cassia fistula L.) and a fruit tree (Psidium guajava L.) were grown in earthen pots at different study sites receiving varying levels of air pollution input. Changes in plant growth, morphological characteristics, photosynthetic pigment, ascorbic acid, N and S contents and in dry matter allocation were considered in relation to the status of ambient air quality. Observations with these parameters have indicated that the ambient air around the factory contained pollutants at phytotoxic levels. Plant height, basal diameter, conopy area, leaf area and chlorophyll, ascorbic acid and foliar-N concentrations decreased with increasing pollution load. However, foliar-S increased slightly at polluted sites. Air pollution load around the factory have also altered the biomass allocation. Root:shoot ratios increased in C. fistula and P. guajava at polluted sites. In contrast, for C. carandas the above ground parts, where foliage assumed predominance showed precedence over the root growth. This species responded characteristically to air pollution stress by allocating more of its photosynthate towards leaf production and shoot growth.
Pandey
J
J
Department of Environmental Sciences, ML Sukhadia University, Udaipur Rajasthan, India.
D000393:Air Pollutants / Q000633:toxicity*; D001205:Ascorbic Acid / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D004784:Environmental Monitoring / Q000379:methods*; D005308:Fertilizers / Q000633:toxicity; D007194:India; D007221:Industry; D009584:Nitrogen / Q000378:metabolism; D010710:Phosphates / Q000633:toxicity*; D045332:Photosystem II Protein Complex / Q000378:metabolism; D063245:Plant Development; D018515:Plant Leaves / Q000737:chemistry / Q000187:drug effects; D010944:Plants / Q000187:drug effects* / Q000378:metabolism; D036226:Seedlings / Q000187:drug effects* / Q000254:growth & development; D013455:Sulfur / Q000378:metabolism
D000393:Air Pollutants; D005308:Fertilizers; D010710:Phosphates; D045332:Photosystem II Protein Complex; D002734:Chlorophyll; D013455:Sulfur; D009584:Nitrogen; D001205:Ascorbic Acid
Am Ind Hyg Assoc J. 1971 Oct;32(10):697-701
5136842
Environ Monit Assess. 1996 Dec;43(3):255-65
24193899
Photosynth Res. 1990 Sep;25(3):241-8
24420354
Environ Monit Assess. 1995 Mar;35(1):27-42
24202210
Plant Physiol. 1988 Sep;88(1):218-23
16666270
Free Radic Res Commun. 1987;3(1-5):193-7
3508431
Environ Monit Assess. 1994 Dec;33(3):195-213
24201886