title: Ocimum sanctum leaf extract induces drought stress tolerance in rice.
abstract: Ocimum leaves are highly enriched in antioxidant components. Thus, its leaf extract, if applied in plants, is believed to efficiently scavenge ROS, thereby preventing oxidative damage under drought stress. Thus, the present study was performed in kharif 2013 and rabi 2014 season to evaluate the effect of aqueous leaf extract of Ocimum sanctum against drought stress in 2 rice genotype under glass house conditions. Here we show that various morpho- physiological (chlorophyll fluorescence, leaf rolling score, leaf tip burn, number of senesced leaves and total dry matter) and biochemical parameters (proline, malondialdehyde and superoxide dismutase content) were amended by Ocimum treatment in both the seasons. Application of Ocimum extract increased expression of dehydrin genes, while reducing expression of aquaporin genes in drought stressed rice plant. Thus, application of Ocimum leaf extract under drought stress can be suggested as a promising strategy to mitigate drought stress in economical, accessible and ecofriendly manner.
authors.affiliation: a Department of Plant Physiology , G.B. Pant University of Agriculture and Technology , Pantnagar , Uttarakhand , India.
authors.forename: Veena
authors.initials: V
authors.lastname: Pandey
authors.affiliation: b Department of Botany , Zakir Husain Delhi College , Jawahar Lal Nehru Marg, New Delhi , India.
authors.forename: M W
authors.initials: MW
authors.lastname: Ansari
authors.affiliation: c Plant Molecular Biology Group, International Center for Genetic Engineering and Biotechnology , New Delhi , India.
authors.forename: Suresh
authors.initials: S
authors.lastname: Tula
authors.affiliation: c Plant Molecular Biology Group, International Center for Genetic Engineering and Biotechnology , New Delhi , India.
authors.forename: R K
authors.initials: RK
authors.lastname: Sahoo
authors.affiliation: a Department of Plant Physiology , G.B. Pant University of Agriculture and Technology , Pantnagar , Uttarakhand , India.
authors.forename: Gurdeep
authors.initials: G
authors.lastname: Bains
authors.affiliation: d Department of Plant Pathology , G.B. Pant University of Agriculture and Technology , Pantnagar , Uttarakhand , India.
authors.forename: J
authors.initials: J
authors.lastname: Kumar
authors.affiliation: e Amity Institute of Microbial Technology, Amity University , Noida , UP , India.
authors.forename: Narendra
authors.initials: N
authors.lastname: Tuteja
authors.affiliation: a Department of Plant Physiology , G.B. Pant University of Agriculture and Technology , Pantnagar , Uttarakhand , India.
authors.forename: Alok
authors.initials: A
authors.lastname: Shukla
mesh_terms: D000222:Adaptation, Physiological / Q000187:drug effects* / Q000235:genetics; D055864:Droughts; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D017343:Genes, Plant; D005838:Genotype; D000070004:Ocimum sanctum / Q000737:chemistry*; D012275:Oryza / Q000033:anatomy & histology / Q000187:drug effects / Q000235:genetics / Q000502:physiology*; D010936:Plant Extracts / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D012621:Seasons; D015398:Signal Transduction / Q000187:drug effects / Q000235:genetics; D013312:Stress, Physiological / Q000187:drug effects* / Q000235:genetics
chemical_list: D010936:Plant Extracts; D010940:Plant Proteins
keywords: Aquaporin; chlorophyll fluorescence; dehydrin; gene expression; leaf rolling; leaf senescence