ArticleJournal of microbiology (Seoul, Korea)2014
Bacterial endophyte Sphingomonas sp. LK11 produces gibberellins and IAA and promotes tomato plant growth.
Article in Journal of microbiology (Seoul, Korea), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 158 papers.
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158 citing papers in PubMed.
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- Positive impact of hydroponics and artificial light on yield and quality of wheat.Scientific reports · 2025Article
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- Silicon: A valuable soil element for improving plant growth and COJournal of advanced research · 2025Review
- Foliar infections by Botrytis cinerea modulate the tomato root volatilome and microbiome.FEMS microbiology ecology · 2025Article
- From microbiome to biostimulants: unlocking the potential of tomato root endophytes.BMC plant biology · 2025Article
- Impact of organic liquid fertilizer on plant growth of Chinese cabbage and soil bacterial communities.Scientific reports · 2025Article
- Soil microbiome analysis of cultivated tomato (microPublication biology · 2025Article
98 more citing papers are in PubMed but not listed here.
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11 authors.
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Abstract
Plant growth promoting endophytic bacteria have been identified as potential growth regulators of crops. Endophytic bacterium, Sphingomonas sp. LK11, was isolated from the leaves of Tephrosia apollinea. The pure culture of Sphingomonas sp. LK11 was subjected to advance chromatographic and spectroscopic techniques to extract and isolate gibberellins (GAs). Deuterated standards of [17, 17-(2)H2]-GA4, [17, 17-(2)H2]-GA9 and [17, 17-(2)H2]-GA20 were used to quantify the bacterial GAs. The analysis of the culture broth of Sphingomonas sp. LK11 revealed the existence of physiologically active gibberellins (GA4: 2.97 ± 0.11 ng/ml) and inactive GA9 (0.98 ± 0.15 ng/ml) and GA20 (2.41 ± 0.23). The endophyte also produced indole acetic acid (11.23 ± 0.93 μM/ml). Tomato plants inoculated with endophytic Sphingomonas sp. LK11 showed significantly increased growth attributes (shoot length, chlorophyll contents, shoot, and root dry weights) compared to the control. This indicated that such phyto-hormones-producing strains could help in increasing crop growth.
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