Department of Botany
Prof. Nafees Ahmad Khan
|Qualification :||Ph.D, D. Sc.|
|Thrust Area :||Plant stress physiology, hormonal, nutrients and abiotic stress cross-talk|
|Address :||Department of Botany, Aligarh Muslim University, Aligarh 202002, India|
|Email :||email@example.com, firstname.lastname@example.org|
|Telephone :||91-571-2700920-Ext 3311|
|Time Table :||Click to View|
|Download :||Click here to download study materials|
The research focus of Prof. Nafees A. Khan is mainly on understanding the mechanisms of hormonal and nutritional regulation of plant growth with special emphasis on abiotic stress vis-a-vis photosynthetic efficiency and abiotic stress tolerance. The protection of photosynthetic apparatus against abiotic stress (metals, salt, temperature) by manipulating the phytohormones and mineral nutrient status of plant through modulating the components of antioxidant defense has been achieved. Among the detoxifying mechanisms, modulation of phytohormones and mineral nutrients status play important role in maintaining photosynthetic potential under stressful environment. It has also been reported that phytohormones (gibberellic acid, salicylic acid, nitric oxide and ethylene) play the most prominent role in affecting sulfate and nitrate assimilation, and regulation of antioxidant defense system thereby enhancing abiotic stress tolerance. Also, there exists cross-talk between hormones for the modulation of nutrient-use efficiency, source-sink relations and abiotic stress tolerance. These findings have been reported in Plant Physiology, Plant, Cell & Environment, Journal of Experimental Botany, Frontiers in Plant Science, Physiologia Plantarum, Ecotoxicology and Environmental Safety, Environmental and Experimental Botany, Journal of Plant Physiology, Plant Physiology and Biochemistry, Protoplasma, Nitric Oxide, Plant Science, BMC Plant Biology, Plant Growth Regulation, Photosynthetica, Plant Signalling and Behaviour, Journal of Agronomy and Crop Science, Field Crops Research, Pedosphere and others.
- N.A. Khan, M.I.R. Khan, A. Ferrante and P. Peter. 2017. Ethylene: A key regulatory molecule in plants. Frontiers in Plant Science 8: 1782.
- Iqbal, N., N.A. Khan, A. Ferrante, A. Trivellini, A. Francini and M.I.R. Khan. 2017. Ethylene role in plant growth, development and senescence: interaction with other phytohormones. Frontiers in Plant Science 8: 475.
- Khan M.I.R., N.A. Khan, A. Masood, T.S. Per and M. Asgher. 2016. Hydrogen peroxide alleviates nickel-inhibited photosynthetic responses through increase in use-efficiency of nitrogen and sulfur, and glutathione production in mustard. Frontiers in Plant Science 7:44.
- Thao N.P., M.I.R. Khan, N.B.A. Thu, X.L.T. Hoang, M. Asgher, N.A. Khan and L.P. Tran. 2015. Role of ethylene and its crosstalk with other signaling molecules in plant responses to heavy metals. Plant Physiology 169:73-84
- Khan M.I.R., F. Nazir, M. Asgher, T.S. Per and N.A. Khan. 2015. Selenium and sulfur influence ethylene formation and alleviate cadmium-induced oxidative stress by improving proline and glutathione production in wheat. Journal of Plant Physiology 173: 9-18.
- Masood A., M.I.R. Khan, M. Fatma, M. Asgher, T.S. Per and N.A. Khan. 2016. Involvement of ethylene in gibberellic acid-induced sulfur assimilation, photosynthetic responses, and alleviation of cadmium stress in mustard. Plant Physiology and Biochemistry 104: 1-10
- Khan M.I.R., M. Asgher and N.A. Khan. 2014. Alleviation of salt-induced photosynthesis and growth inhibition by salicylic acid involves glycinebetaine and ethylene in mungbean (Vigna radiata L.). Plant Physiology and Biochemistry 80: 67-74.
- Khan M.I.R. and N.A. Khan. 2014. Ethylene reverses photosynthetic inhibition by nickel and zinc in mustard through changes in PS II activity, photosynthetic nitrogen use efficiency and antioxidant metabolism. Protoplasma 251: 1007- 1019.
- Nazar R., M.I.R. Khan, N. Iqbal, A. Masood and N.A. Khan. 2014. Involvement of ethylene in reversal of salt-inhibited photosynthesis by sulphur in mustard. Physiologia Plantarum 152: 331-344.
- Fatma M., M. Asgher, A. Masood and N.A. Khan. 2014. Excess sulfur supplementation improves photosynthesis and growth in mustard under salt stress through increased production of glutathione. Environmental and Experimental Botany 107: 55-63.
- Masood A., N. Iqbal and N.A. Khan. 2012. Role of ethylene in alleviation of cadmium-induced photosynthetic inhibition by sulfur in mustard. Plant, Cell & Environment 35: 524-533.
- Iqbal N., R. Nazar, S. Syeed, A. Masood and N. A. Khan. 2011. Exogenously sourced ethylene increases stomatal conductance, photosynthesis and growth under optimal and deficient nitrogen fertilization in mustard. Journal of Experimental Botany 62: 4955-4963
- Nazar R., N. Iqbal, S. Syeed and N.A. Khan. 2011. Salicylic acid alleviates decreases in photosynthesis under salt stress by enhancing nitrogen and sulfur assimilation and antioxidant metabolism differentially in two mungbean cultivars. Journal of Plant Physiology 168: 807-815.
- Khan N.A., N.A. Anjum, R. Nazar and P.M. Lone. 2008. Activity of 1- aminocyclopropane carboxylic acid synthase and growth of mustard (Brassica juncea) following defoliation. Plant Growth Regulation 56: 151-157.
- Khan N.A., Samiullah, S. Singh and R. Nazar. 2007. Activities of antioxidative enzymes, sulfur assimilation, photosynthetic activity and growth of wheat (Triticum aestivum) cultivars differing in yield potential under cadmium stress. Journal of Agronomy and Crop Science 193: 435-444.
- Khan N.A. 2005. Involvement of 1-aminocyclopropane carboxylic acid synthase in photosynthesis and growth of mustard cultivars with different capacities. Physiology and Molecular Biology of Plants 11: 333-337. 101.
- Khan N.A. 2005. The influence of exogenous ethylene on growth and photosynthesis of mustard (Brassica juncea) following defoliation. Scientia Horticulturae 105: 499-505.
- Khan N.A., M. Khan, H.R. Ansari and Samiullah. 2002. Auxin and defoliation effects on photosynthesis and ethylene evolution in mustard. Scientia Horticulturae 96: 43-51.
- Khan N.A., H.R. Ansari and Samiullah. 1997. Effect of gibberellic acid spray and basal nitrogen and phosphorus on productivity and fatty acid composition of rapeseed mustard. Journal of Agronomy and Crop Science 179: 29-33.
- Khan N.A., H.R. Ansari and M. Mobin. 1996. Effect of gibberellic acid and nitrogen on carbonic anhydrase activity and mustard biomass. Biologia Plantarum 38: 601-603.