A role for the gibberellin pathway in biochar-mediated growth promotion

Biochar is a carbon negative soil amendment that can promote crop growth. However, the effects of biochar on different plant species and cultivars within a species are not well understood, nor is the underlying basis of biochar-mediated plant growth promotion. This knowledge is critical for optimal...

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Bibliographic Details
Published in:Scientific reports 2018-03, Vol.8 (1), p.5389-10, Article 5389
Main Authors: French, Elizabeth, Iyer-Pascuzzi, Anjali S.
Format: Article
Language:English
Subjects:
631/449/1659
631/449/1736
Charcoal
Cultivars
Genotypes
Germination
Humanities and Social Sciences
multidisciplinary
Plant breeding
Plant growth
Plant species
Science
Science (multidisciplinary)
Soil amendment
Solanum lycopersicum
Solanum pennellii
Solanum pimpinellifolium
Tomatoes
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Summary:Biochar is a carbon negative soil amendment that can promote crop growth. However, the effects of biochar on different plant species and cultivars within a species are not well understood, nor is the underlying basis of biochar-mediated plant growth promotion. This knowledge is critical for optimal use of biochar and for breeding biochar-responsive plants. Here, we investigated the genotype-specific effects of biochar on two cultivars of Solanum lycopersicum (tomato), and two wild relatives of tomato, Solanum pimpinellifolium , and Solanum pennelli , in two types of biochar. Biochar promoted shoot growth in all genotypes independent of biochar type but had genotype-dependent effects on other plant traits. Germination tests, exogenous GA 4 application and mutant analysis indicated a role for GA in biochar-mediated plant growth promotion. Together, our results suggest that biochar promotes growth partially through stimulation of the GA pathway.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-23677-9