1Department of Botany, University of Karachi, Karachi-75270, Pakistan
2California Department of Food and Agriculture, 3288 Meadowview Road, Sacramento, CA 95832, USA
The effect of automobile pollution was determined on chlorophyll content of four different tree species viz. Azadirachta indica L., Conocarpus erectus L., Guiacum officinale L.and Eucalyptus sp. growing along the roads of the city. Significant changes in the level of chlorophyll “a”, chlorophyll “b” and total chlorophyll “a+b” were found in the leaves of four tree species (A. indica, C. erectus, G.officinale and Eucalyptus sp.) collected from polluted sites (Airport, Malir Halt, Quaidabad) as compared to control site (Karachi University Campus). Lowest concentration of chlorophyll “a”, chlorophyll “b” and chlorophyll “a+b” was recorded in the leaf samples of all tree species collected from Quaidabad site when compared with the leaf samples collected from control site. The highest levels of chlorophyll pigment were recorded in all tree species leave samples collected from Karachi University Campus. Similarly, better levels of chlorophyll “a”, chlorophyll “b” and total chlorophyll “a+b” was observed in all tree species growing at Airport site as compared to plants growing at Malir Halt and Quaidabad sites. This study clearly indicated that the vehicular activities induced air pollution problem and affected on the level of chlorophyll pigments in trees which were exposed to road side pollution.
Ahmad, M.S.A.; Hussain, M.; Ijaz, S.; Alvi, A.K., (2008). Photosynthetic performance of two mung bean (Vigna radiata (L.) Wilczek) cultivars under lead and cupper stress. Int. J. Agric. Biol., 10: 167-172 (6pages).
Aksoy, A.; Sahln, U., (1999). Elaeagnus angustifolia L. as a biomonitor of heavy metal pollution. Turk. J. Bot., 23: 83-87 (5pages).
Aksoy, A.; Sahln, U.; Duman, F., (2000). Robinia psuedoacacia L. as a possible biomonitor of heavy metal pollution in Kayseri. Turk. J. Bot., 24: 279-284 (5 pages).
Bignal, K.L.; Ashmore, M.R.; Headley, A.D., (2008). Effects of air pollution from road transport on growth and physiology of six transplanted bryophyte species. Environ. Poll., 156: 332-340 (9 pages).
Carreras, H.A.; Cañas, M.S.; Pignata, M.L., (1996). Differences in responses to urban air pollutants by Ligustrum lucidum Ait. and Ligustrum lucidum Ait. f. tricolor (Rehd.) Rehd. Environ. Poll., 93: 211-218 (8 pages).
Chauhan, A., (2010). Photosynthetic pigment change in some selected tree induced by automobile exhaust in Dehradun, Uttarakhand. New York Sci. J., 3: 45-51 (7 pages).
Chauhan, A.; Joshi, P.C., (2008). Effect of ambient air pollution on photosynthetic pigments on some selected trees in urban area. Ecol. Environ. Conserv., 14: 23-27 (5pages).
Durrani G.F.; Hassan, M.; Baloch, M.K.; Hameed, G., (2004). Effect of traffic pollution on plant photosynthesis. J. Chem. Soc. Pak., 26: 176-179 (4 pages).
Escudero, M.; Querol, X.; Rodriguez, S.; Cuevas, E., (2013). Quantification of the net African dust load in air quality monitoring networks. Atmos. Environ., 41: 5516-5524 (6 pages).
Francis, J.K., (1993). Guaiacum officinale L. Lingumvitae.Guayacan.Zygophyllacea.Caltrop Family. U.S.D.A. Forest Service, International Institute of Tropical Forestry, 4p. http://www. treesearch.fs.fed.us/pubs/30349
Girma, A.; Skidmore, A.K.; Bie, C.A.J.M. de; Bongers, F.; Schlerf, M., (2013). Photosynthetic bark: use of chlorophyll absorption continuum index to estimate Boswellia papyrifera bark chlorophyll content. Int. J. Appl. Earth Observ. Geoinform., 23: 71-80 (10pages).
Hamid, N.; Jawaid, F., (2009). Effect of short term exposure of two different concentrations of sulphur dioxide and nitrogen dioxide mixture on some biochemical parameter of soybean (Glycine max L. Merr.). Pak. J. Bot., 41: 2223-2228 (6 pages).
Honour, S.L.; Bell, J.N.B.; Ashenden, T.A.; Cape, J.N.; Power, S.A., (2009). Responses of herbaceous plants to urban air pollution: Effects on growth, phenology and leaf surface characteristics. Environ. Poll., 157: 1279-1286 (8 pages).
Iqbal, M.Z.; Shafiq, M., (Rizv1997). Effects of traffic exhaust on roadside tree during different seasons. Polish J. Environ. Stud., 6: 55-59 (5 pages).
Iqbal, M.Z.; Shafiq, M., (1999). Impact of vehicular emission on germination and growth of neem (Azadirachta indica) tree. Hamdard MedicusXLII: 65-69 (5 pages).
Iqbal, M.Z.; Shafiq, M., (2000). Periodical effects of automobile pollution on the growth of some roadside trees. Ekológia (Bratislava), 19 (1): 104-110 (7 pages).
Iqbal, M.Z.; Siddiqui, A.D., (1996), Effects of autovehicular emissions on pods and seed germination of some plants. Polish J. Environ. Stud., 5: 67-69 (3 pages).
Joshi, C.; Swami, A., (2007). Physiological responses of some tree species under roadside automobile pollution stress around city of Haridwar, India”, Environ., 27: 365-374 (10pages).
Joshi, C.; Swami, A., (2009). Air pollution induced changes in the photosynthetic pigments of selected plant species.J. Environ. Biol., 30: 295-298 (4pages).
Leghari , S.K.; Zaidi, M.A.; Sarangzai, F.M.; Shawani, G.R; Ali. W., (2013). Effect of road side dust pollution on the growth and total chlorophyll contents in Vitis vinefera L. (grapes). Afr. J. Biotechnol., 13: 1237-1242 (6 pages).
Maclachlan, S.; Zalik, S., (1963). Plasted structure, chlorophyll concentration and free amino acid composition of chlorophyll mutant of barely. Can. J. Bot., 41: 1053-1062 (11 pages).
Miszalski, Z.; Mydlarz, J., (1990). SO2 influence on photosynthesis of tomato plants at different CO2 concentrations. Photosynthetica, 24: 2-8 (7 pages).
Narwaria, Y.S.; Kush, K., (2012). Environmental assessment of air pollution on roadside plants species at Dehradun, Uttrakhand, India. J. Environ. Res. Develop., 7: 710-714 (5 pages).
Parveen, S.; Iqbal, M.Z.; Shafiq, M.; Athar, M., (2014). Effect of automobile polluted soil on early seedling growth performance of Neem (Azadirachtaindica A. Juss.). Adv. Environ. Res., 3:1-9 (9 pages).
Peng, G.; Xie, X.; Jiang, Q.; Song, S.; Xu, C., (2013). Chlorophyll a/b binding protein plays a key role in natural and ethylene-induced degreening of Ponkan (Citrus reticulata Blanco). Sci. Hort., 160: 37-43 (7 pages).
Philip, E.; Azlin, Y.N., (2005). Measurement of soil compaction tolerance of Lagestromia speciosa (L.) Pers. using chlorophyll fluorescence. Urban Forest. Urban Green., 3: 203-208 (5 pages).
Prajapati, S.K.; Tripathi, B.D., (2008). Seasonal variation of leaf dust accumulations and pigment content in plant species exposed to urban particulates pollution. J. Environ, Qual., 37: 865-870 (6 pages).
Rai, P.K., (2013). Environmental magnetic studies of particulates with special reference to biomagnetic monitoring using roadside plant leaves. Atmos. Environ., 72: 113-129 (17 pages).
Sadaoka, K.; Kashimura, S.; Saga, Y., (2011). Effects of molecular structures on reduction properties of formyl groups in chlorophylls and pheophytins prepared from oxygenic photosynthetic organisms. Bioorgan. Med. Chem., 19: 3901-3905 (5 pages).
Saquib, M.; Ahmad, A.; Ansari, K., (2010). Morphological and physiological responses of Croton bonplandianum Baill. to air pollution. Ecoprint 17: 35-41 (6 pages).
Shafiq, M.; Iqbal, M.Z., (2007). Germination and seedling behavior of seeds of Peltophorum pterocarpum D.C Bakerex. K. Heyne growing under motor vehicle emission. Turk. J. Bot., 31: 565-570 (6 pages).
Shafiq, M.; Iqbal, M., (2012). Effect of autoexhaust emission on germination and seedling growth of an important arid tree Cassia siamea Lamk. Emirates J. Food Agric., 24: 234-242 (9 pages).
Thapar, R.; Srivastava, A.K.; Bhargava, P.; Mishra, Y.; Rai, L.C., (2008). Impact of different abiotic stress on growth, photosynthetic electron transport chain, nutrient uptake and enzyme activities of Cu-acclimated Anabaena doliolum. J. Plant Physiol., 165: 306-316 (11 pages).
UNEP, (1992). Urban air pollution in megacities of the world”, United Nation Environmental Program. Blackwell Publishers, Oxford, U.K. 230 pp.
Younis, U.; Bokhari, T.Z.; Malik, S.A.; Shah, M.H.R.; Athar, M. (2015). Particulate matter effect on biometric and biochemical attributes of fruiting plans. Global J. Environ. Sci. Manage., 1 (2): 117-124 (8 pages).
Wagh, N.D.; Shukla, P.V.; Tabme, S.B.; Ingle, S.T., (2006). Biological monitoring of roadside plants exposed to vehicular pollution in Jalgaon city, India. J. Environ. Biol.,27: 419-421 (3 pages).
Wittenberghe, S.V.; Alonso, L.; Verrelst, J.; Hermans, I.; Delegido, J.; Veroustraete, F.; Valcke, R.; Moreno, J.; Samson, R., (2013). Upward and downward solar-induced chlorophyll fluorescence yield indices of four tree species as indicators of traffic pollution in Valencia. Environ. Pollut., 173: 29-37 (9 pages).
Article View: 2,525
PDF Download: 2,828
Letters to Editor
GJESM welcomes letters to the editor. Letters pertaining to manuscript published in GJESM should be sent to the editorial office of GJESM within three months of either online publication or before printed publication, except for critiques of original research. Following points are to be considering before sending the letters (comments) to the editor.
 Letters that include statements of statistics, facts, research, or theories should include appropriate references, although more than three are discouraged.
 Letters that are personal attacks on an author rather than thoughtful criticism of the author’s ideas will not be considered for publication.
 Letters can be no more than 300 words in length.
 Letter writers should include a statement at the beginning of the letter stating that it is being submitted either for publication or not.
 Anonymous letters will not be considered.
 Letter writers must include their city and state of residence or work.
 Letters will be edited for clarity and length.