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Evaluation of plant growth promotion properties and induction of antioxidative defense mechanism by tea rhizobacteria of Darjeeling, India.
Bhattacharyya, Chandrima; Banerjee, Srimoyee; Acharya, Udita; Mitra, Aroni; Mallick, Ivy; Haldar, Anwesha; Haldar, Shyamalina; Ghosh, Anupama; Ghosh, Abhrajyoti.
Afiliação
  • Bhattacharyya C; Department of Biochemistry, Bose Institute, Centenary Campus, P1/12, C.I.T. Road, Scheme VIIM, Kolkata, 700054, India.
  • Banerjee S; Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, C.I.T. Road, Scheme VIIM, Kolkata, 700054, India.
  • Acharya U; Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, C.I.T. Road, Scheme VIIM, Kolkata, 700054, India.
  • Mitra A; Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, C.I.T. Road, Scheme VIIM, Kolkata, 700054, India.
  • Mallick I; Department of Biochemistry, Bose Institute, Centenary Campus, P1/12, C.I.T. Road, Scheme VIIM, Kolkata, 700054, India.
  • Haldar A; Department of Geography, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, India.
  • Haldar S; Department of Biochemistry, Asutosh College, University of Calcutta, Kolkata, 700026, India.
  • Ghosh A; Division of Plant Biology, Bose Institute, Centenary Campus, P1/12, C.I.T. Road, Scheme VIIM, Kolkata, 700054, India. ghosh.anupama1982@gmail.com.
  • Ghosh A; Department of Biochemistry, Bose Institute, Centenary Campus, P1/12, C.I.T. Road, Scheme VIIM, Kolkata, 700054, India. aghosh78@gmail.com.
Sci Rep ; 10(1): 15536, 2020 09 23.
Article em En | MEDLINE | ID: mdl-32968101
ABSTRACT
A total of 120 rhizobacteria were isolated from seven different tea estates of Darjeeling, West Bengal, India. Based on a functional screening of in vitro plant growth-promoting (PGP) activities, thirty potential rhizobacterial isolates were selected for in-planta evaluation of PGP activities in rice and maize crops. All the thirty rhizobacterial isolates were identified using partial 16S rRNA gene sequencing. Out of thirty rhizobacteria, sixteen (53.3%) isolates belong to genus Bacillus, five (16.6%) represent genus Staphylococcus, three (10%) represent genus Ochrobactrum, and one (3.3%) isolate each belongs to genera Pseudomonas, Lysinibacillus, Micrococcus, Leifsonia, Exiguobacterium, and Arthrobacter. Treatment of rice and maize seedlings with these thirty rhizobacterial isolates resulted in growth promotion. Besides, rhizobacterial treatment in rice triggered enzymatic [ascorbate peroxidase (APX), catalase (CAT), chitinase, and phenylalanine ammonia-lyase (PAL)], and non-enzymatic [proline and polyphenolics] antioxidative defense reactions indicating their possible role in the reduction of reactive oxygen species (ROS) burden and thereby priming of plants towards stress mitigation. To understand such a possibility, we tested the effect of rhizobacterial consortia on biotic stress tolerance of rice against necrotrophic fungi, Rhizoctonia solani AG1-IA. Our results indicated that the pretreatment with rhizobacterial consortia increased resistance of the rice plants towards the common foliar pathogen like R. solani AG1-IA. This study supports the idea of the application of plant growth-promoting rhizobacterial consortia in sustainable crop practice through the management of biotic stress under field conditions.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Raízes de Plantas / Camellia sinensis / Antioxidantes Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Raízes de Plantas / Camellia sinensis / Antioxidantes Idioma: En Ano de publicação: 2020 Tipo de documento: Article