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Stress Inducible Overexpression of AtHDG11 Leads to Improved Drought and Salt Stress Tolerance in Peanut (Arachis hypogaea L.).
Banavath, Jayanna N; Chakradhar, Thammineni; Pandit, Varakumar; Konduru, Sravani; Guduru, Krishna K; Akila, Chandra S; Podha, Sudhakar; Puli, Chandra O R.
Afiliación
  • Banavath JN; Plant Molecular Biology Laboratory, Department of Botany, Yogi Vemana University, Kadapa, India.
  • Chakradhar T; International Crops Research Institute for Semi-Arid Tropics, Patancheru, India.
  • Pandit V; Plant Molecular Biology Laboratory, Department of Botany, Yogi Vemana University, Kadapa, India.
  • Konduru S; Plant Molecular Biology Laboratory, Department of Botany, Yogi Vemana University, Kadapa, India.
  • Guduru KK; Plant Molecular Biology Laboratory, Department of Botany, Yogi Vemana University, Kadapa, India.
  • Akila CS; Molecular Genetics and Functional Genomics Laboratory, Department of Biotechnology, Yogi Vemana University, Kadapa, India.
  • Podha S; Department of Biotechnology, Acharya Nagarjuna University, Guntur, India.
  • Puli COR; Plant Molecular Biology Laboratory, Department of Botany, Yogi Vemana University, Kadapa, India.
Front Chem ; 6: 34, 2018.
Article en En | MEDLINE | ID: mdl-29552555
Peanut is an important oilseed and food legume cultivated as a rain-fed crop in semi-arid tropics. Drought and high salinity are the major abiotic stresses limiting the peanut productivity in this region. Development of drought and salt tolerant peanut varieties with improved yield potential using biotechnological approach is highly desirable to improve the peanut productivity in marginal geographies. As abiotic stress tolerance and yield represent complex traits, engineering of regulatory genes to produce abiotic stress-resilient transgenic crops appears to be a viable approach. In the present study, we developed transgenic peanut plants expressing an Arabidopsis homeodomain-leucine zipper transcription factor (AtHDG11) under stress inducible rd29A promoter. A stress-inducible expression of AtHDG11 in three independent homozygous transgenic peanut lines resulted in improved drought and salt tolerance through up-regulation of known stress responsive genes (LEA, HSP70, Cu/Zn SOD, APX, P5CS, NCED1, RRS5, ERF1, NAC4, MIPS, Aquaporin, TIP, ELIP) in the stress gene network, antioxidative enzymes, free proline along with improved water use efficiency traits such as longer root system, reduced stomatal density, higher chlorophyll content, increased specific leaf area, improved photosynthetic rates, and increased intrinsic instantaneous WUE. Transgenic peanut plants displayed high yield compared to non-transgenic plants under both drought and salt stress conditions. Holistically, our study demonstrates the potentiality of stress-induced expression of AtHDG11 to improve the drought, salt tolerance in peanut.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Front Chem Año: 2018 Tipo del documento: Article País de afiliación: India Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Front Chem Año: 2018 Tipo del documento: Article País de afiliación: India Pais de publicación: Suiza