title: Dose-dependent response of Trichoderma harzianum in improving drought tolerance in rice genotypes.
abstract: This study demonstrates a dose-dependent response of Trichoderma harzianum Th-56 in improving drought tolerance in rice by modulating proline, SOD, lipid peroxidation product and DHN / AQU transcript level, and the growth attributes. In the present study, the effect of colonization of different doses of T. harzianum Th-56 strain in rice genotypes were evaluated under drought stress. The rice genotypes treated with increasing dose of T. harzianum strain Th-56 showed better drought tolerance as compared with untreated control plant. There was significant change in malondialdehyde, proline, higher superoxide dismutase level, plant height, total dry matter, relative chlorophyll content, leaf rolling, leaf tip burn, and the number of scorched/senesced leaves in T. harzianum Th-56 treated rice genotypes under drought stress. This was corroborated with altered expression of aquaporin and dehydrin genes in T. harzianum Th-56 treated rice genotypes. The present findings suggest that a dose of 30 g/L was the most effective in improving drought tolerance in rice, and its potential exploitation will contribute to the advancement of rice genotypes to sustain crop productivity under drought stress. Interaction studies of T. harzianum with three aromatic rice genotypes suggested that PSD-17 was highly benefitted from T. harzianum colonization under drought stress.
authors.affiliation: Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
authors.forename: Veena
authors.initials: V
authors.lastname: Pandey
authors.affiliation: Department of Botany, Zakir Husain Delhi College, University of Delhi, Jawahar Lal Nehru Marg, New Delhi, 110002, India.
authors.forename: Mohammad W
authors.initials: MW
authors.lastname: Ansari
authors.affiliation: Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India.
authors.forename: Suresh
authors.initials: S
authors.lastname: Tula
authors.affiliation: Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India.
authors.forename: Sandep
authors.initials: S
authors.lastname: Yadav
authors.affiliation: Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India.
authors.forename: Ranjan K
authors.initials: RK
authors.lastname: Sahoo
authors.affiliation: Department of Plant Pathology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
authors.forename: Nandini
authors.initials: N
authors.lastname: Shukla
authors.affiliation: Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
authors.forename: Gurdeep
authors.initials: G
authors.lastname: Bains
authors.affiliation: Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
authors.forename: Shail
authors.initials: S
authors.lastname: Badal
authors.affiliation: Department of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
authors.forename: Subhash
authors.initials: S
authors.lastname: Chandra
authors.affiliation: Department of Molecular Biology and Genetic Engineering, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
authors.forename: A K
authors.initials: AK
authors.lastname: Gaur
authors.affiliation: Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India.
authors.forename: Atul
authors.initials: A
authors.lastname: Kumar
authors.affiliation: Department of Plant Physiology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India. aloks99@yahoo.com.
authors.forename: Alok
authors.initials: A
authors.lastname: Shukla
authors.affiliation: Department of Plant Pathology, G.B. Pant University of Agriculture and Technology, Pantnagar, 263145, India. jkumar56@gmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Kumar
authors.affiliation: Department of Botany, Zakir Husain Delhi College, University of Delhi, Jawahar Lal Nehru Marg, New Delhi, 110002, India. narendra@icgeb.res.in.|Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India. narendra@icgeb.res.in.|Amity Institute of Microbial Technology, Amity University, E2-Block, 4th Floor, Room 404A, Sector 125, Noida, 201313, UP, India. narendra@icgeb.res.in.
authors.forename: Narendra
authors.initials: N
authors.lastname: Tuteja
mesh_terms: D055864:Droughts; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D005838:Genotype; D008315:Malondialdehyde / Q000378:metabolism; D012275:Oryza / Q000235:genetics / Q000382:microbiology / Q000502:physiology*; D011392:Proline / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction; D013312:Stress, Physiological; D013482:Superoxide Dismutase / Q000378:metabolism; D014242:Trichoderma / Q000502:physiology*
chemical_list: D008315:Malondialdehyde; D011392:Proline; D013482:Superoxide Dismutase
keywords: Aquaporin; Dehydrin; Drought stress; Rice genotypes; Trichoderma