Photosynthetic activity, pigment composition and antioxidative response of two mustard (Brassica juncea) cultivars differing in photosynthetic capacity subjected to cadmium stress

Journal of Plant Physiology
Mohammad Mobin, Nafees A Khan

Abstract

Photosynthetic performance, contents of chlorophyll and associated pigments, cellular damage and activities of antioxidative enzymes were investigated in two mustard (Brassica juncea L.) cultivars differing in photosynthetic capacity subjected to cadmium (Cd) stress. Exposure to Cd severely restricted the net photosynthetic rate (P(N)) of RH-30 compared to Varuna. This corresponded to the reductions in the activities of carbonic anhydrase (CA) and ribulose-1,5-bisphosphate carboxylase (Rubisco) in both the cultivars. Decline in chlorophyll (Chl) (a+b) and Chl a content was observed but decrease in Chl b was more conspicuous in Varuna under Cd treatments, which was responsible for higher Chl a:b ratio. Additionally, the relative amount of anthocyanin remained higher in Varuna compared to RH-30 even in the presence of high Cd concentration, while percent pheophytin content increased in RH-30 at low Cd concentration. A higher concentration of Cd (100 mg Cd kg(-1) soil) resulted in elevated hydrogen peroxide (H(2)O(2)) content in both the cultivars. However, Varuna exhibited lower content of H(2)O(2) in comparison to RH-30. This was reflected in the increased cellular damage in RH-30, expressed by greater thiobarbituric acid reacti...Continue Reading

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Citations

Jun 12, 2013·Photosynthesis Research·Jeroni GalmésJaume Flexas
May 10, 2013·Environmental Science and Pollution Research International·Shuduan TanQuanfa Zhang
Jan 28, 2009·Biological Trace Element Research·Letty Beatriz C MarcanoPatricia Moreno de Soto
May 21, 2013·Ecotoxicology and Environmental Safety·Ramadan A Agami, Gamal F Mohamed
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Sep 26, 2013·Environmental Science and Pollution Research International·Francesca BretzelLaura Pistelli
Aug 19, 2014·BioMed Research International·Dhriti KapoorRenu Bhardwaj
Sep 13, 2014·Journal of Plant Physiology·Daniela Di BaccioLuca Sebastiani
Dec 20, 2013·Environmental Science and Pollution Research International·Zhongcai XueShijie Zhao
Feb 7, 2012·Plant Physiology and Biochemistry : PPB·Thorny Chanu ThounaojamS K Panda
Sep 15, 2010·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Vânia L SouzaFábio P Gomes
Jul 20, 2010·Bulletin of Environmental Contamination and Toxicology·Gangrong ShiCuiping Hou
Aug 8, 2015·International Journal of Molecular Sciences·Miguel P MouratoLuisa Louro Martins
Feb 6, 2016·Plant Cell Reports·Zhouping LiuCheng Zhu
Mar 7, 2012·Plant Physiology and Biochemistry : PPB·Sónia SilvaConceição Santos
Dec 21, 2011·Ecotoxicology and Environmental Safety·Zhaoguo SunXiaohua Huang
Sep 28, 2010·Plant Physiology and Biochemistry : PPB·Sarvajeet Singh Gill, Narendra Tuteja
Aug 18, 2009·Journal of Plant Physiology·Rong-Rong YingJean-Louis Morel
Mar 10, 2016·Environmental Science and Pollution Research International·Shakeel Ahmad AnjumShahbaz Atta Tung
Jul 1, 2015·Environmental Science and Pollution Research International·Shakeel Ahmad AnjumBabar Shahzad
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Jul 15, 2015·Environmental Science and Pollution Research International·Venkidasamy BaskarSe Won Park

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