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Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease

The individual role of biochar, compost and PGPR has been widely studied in increasing the productivity of plants by inducing resistance against phyto-pathogens. However, the knowledge on combined effect of biochar and PGPR on plant health and management of foliar pathogens is still at juvenile stag...

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Autores principales: Rasool, Mujahid, Akhter, Adnan, Soja, Gerhard, Haider, Muhammad Saleem
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7971063/
https://www.ncbi.nlm.nih.gov/pubmed/33731746
http://dx.doi.org/10.1038/s41598-021-85633-4
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author Rasool, Mujahid
Akhter, Adnan
Soja, Gerhard
Haider, Muhammad Saleem
author_facet Rasool, Mujahid
Akhter, Adnan
Soja, Gerhard
Haider, Muhammad Saleem
author_sort Rasool, Mujahid
collection PubMed
description The individual role of biochar, compost and PGPR has been widely studied in increasing the productivity of plants by inducing resistance against phyto-pathogens. However, the knowledge on combined effect of biochar and PGPR on plant health and management of foliar pathogens is still at juvenile stage. The effect of green waste biochar (GWB) and wood biochar (WB), together with compost (Comp) and plant growth promoting rhizobacteria (PGPR; Bacillus subtilis) was examined on tomato (Solanum lycopersicum L.) physiology and Alternaria solani development both in vivo and in vitro. Tomato plants were raised in potting mixture modified with only compost (Comp) at application rate of 20% (v/v), and along with WB and GWB at application rate of 3 and 6% (v/v), each separately, in combination with or without B. subtilis. In comparison with WB amended soil substrate, percentage disease index was significantly reduced in GWB amended treatments (Comp + 6%GWB and Comp + 3%GWB; 48.21 and 35.6%, respectively). Whereas, in the presence of B. subtilis disease suppression was also maximum (up to 80%) in the substrate containing GWB. Tomato plant growth and physiological parameters were significantly higher in treatment containing GWB (6%) alone as well as in combination with PGPR. Alternaria solani mycelial growth inhibition was less than 50% in comp, WB and GWB amended growth media, whereas B. subtilis induced maximum inhibition (55.75%). Conclusively, the variable impact of WB, GWB and subsequently their concentrations in the soil substrate was evident on early blight development and plant physiology. To our knowledge, this is the first report implying biochar in synergism with PGPR to hinder the early blight development in tomatoes.
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spelling pubmed-79710632021-03-19 Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease Rasool, Mujahid Akhter, Adnan Soja, Gerhard Haider, Muhammad Saleem Sci Rep Article The individual role of biochar, compost and PGPR has been widely studied in increasing the productivity of plants by inducing resistance against phyto-pathogens. However, the knowledge on combined effect of biochar and PGPR on plant health and management of foliar pathogens is still at juvenile stage. The effect of green waste biochar (GWB) and wood biochar (WB), together with compost (Comp) and plant growth promoting rhizobacteria (PGPR; Bacillus subtilis) was examined on tomato (Solanum lycopersicum L.) physiology and Alternaria solani development both in vivo and in vitro. Tomato plants were raised in potting mixture modified with only compost (Comp) at application rate of 20% (v/v), and along with WB and GWB at application rate of 3 and 6% (v/v), each separately, in combination with or without B. subtilis. In comparison with WB amended soil substrate, percentage disease index was significantly reduced in GWB amended treatments (Comp + 6%GWB and Comp + 3%GWB; 48.21 and 35.6%, respectively). Whereas, in the presence of B. subtilis disease suppression was also maximum (up to 80%) in the substrate containing GWB. Tomato plant growth and physiological parameters were significantly higher in treatment containing GWB (6%) alone as well as in combination with PGPR. Alternaria solani mycelial growth inhibition was less than 50% in comp, WB and GWB amended growth media, whereas B. subtilis induced maximum inhibition (55.75%). Conclusively, the variable impact of WB, GWB and subsequently their concentrations in the soil substrate was evident on early blight development and plant physiology. To our knowledge, this is the first report implying biochar in synergism with PGPR to hinder the early blight development in tomatoes. Nature Publishing Group UK 2021-03-17 /pmc/articles/PMC7971063/ /pubmed/33731746 http://dx.doi.org/10.1038/s41598-021-85633-4 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Rasool, Mujahid
Akhter, Adnan
Soja, Gerhard
Haider, Muhammad Saleem
Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease
title Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease
title_full Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease
title_fullStr Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease
title_full_unstemmed Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease
title_short Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease
title_sort role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7971063/
https://www.ncbi.nlm.nih.gov/pubmed/33731746
http://dx.doi.org/10.1038/s41598-021-85633-4
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