title: Low level of selenium increases the efficacy of 24-epibrassinolide through altered physiological and biochemical traits of Brassica juncea plants.
abstract: This study was conducted to provide an insight into the effect of Se (through soil) induced changes in Brassica juncea plants in the presence and absence of 24-epibrassinolide (EBL; foliar). The Se treatments showed dual response, 10 μM of Se significantly increased growth, water relations, photosynthetic attributes along with carbonic anhydrase activity whereas its higher concentrations proved inhibitory in concentration dependent manner. The follow-up application of EBL to the Se stressed plants improved growth, water relations, photosynthesis and simultaneously enhanced the various antioxidant enzymes viz. catalase, peroxidase and superoxide dismutase with the excess accumulation of proline. In addition to this, 10 μM Se increases the efficacy of 10(-8) M of EBL and both in combination showed maximum increase for the growth and photosynthetic traits of plants. On the other hand, the elevated level of antioxidant enzymes as well as proline could have conferred tolerance to the Se-stressed plants resulting in improved growth, water relations and photosynthesis.
authors.affiliation: Plant Physiology & Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh 202002, India.
authors.forename: Fatima Salva
authors.initials: FS
authors.lastname: Naz
authors.affiliation: Plant Physiology & Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh 202002, India. Electronic address: yousuf.alig@hotmail.com.
authors.forename: Mohammad
authors.initials: M
authors.lastname: Yusuf
authors.affiliation: Plant Physiology & Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh 202002, India.
authors.forename: Tanveer A
authors.initials: TA
authors.lastname: Khan
authors.affiliation: Plant Physiology & Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh 202002, India. Electronic address: qazi_farid@yahoo.com.
authors.forename: Qazi
authors.initials: Q
authors.lastname: Fariduddin
authors.affiliation: Plant Physiology & Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh 202002, India.
authors.forename: Aqil
authors.initials: A
authors.lastname: Ahmad
mesh_terms: D000975:Antioxidants / Q000378:metabolism; D060406:Brassinosteroids / Q000494:pharmacology*; D002374:Catalase / Q000378:metabolism; D055598:Chemical Phenomena / Q000187:drug effects*; D002734:Chlorophyll / Q000032:analysis; D009149:Mustard Plant / Q000187:drug effects* / Q000502:physiology*; D009195:Peroxidase / Q000378:metabolism; D010788:Photosynthesis / Q000187:drug effects; D018515:Plant Leaves / Q000737:chemistry; D010940:Plant Proteins / Q000032:analysis; D011392:Proline / Q000378:metabolism; D012643:Selenium / Q000737:chemistry*; D012987:Soil / Q000737:chemistry; D013260:Steroids, Heterocyclic / Q000494:pharmacology*; D013482:Superoxide Dismutase / Q000378:metabolism; D014867:Water / Q000737:chemistry
chemical_list: D000975:Antioxidants; D060406:Brassinosteroids; D010940:Plant Proteins; D012987:Soil; D013260:Steroids, Heterocyclic; D014867:Water; D002734:Chlorophyll; D011392:Proline; D002374:Catalase; D009195:Peroxidase; D013482:Superoxide Dismutase; D012643:Selenium; C023623:brassinolide
keywords: Antioxidant system; Brassinosteroid; Photosynthesis; Selenium