Strain-specific variation in plant growth promoting volatile organic compounds production by five different <i>Pseudomonas</i>
 spp. as confirmed by response of <i>Vigna radiata</i>
 seedlings

Jishma, P.; Hussain, Niaz; Chellappan, R.; Ramesh, R.; Mathew, Jyothis; Radhakrishnan, E. K.

doi:10.1111/jam.13474

Cited by 45 publications

(20 citation statements)

References 27 publications

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“…Meadows growing in disturbed areas have been shown to contain lower carbohydrate levels in plant tissue, and lower biomass and productivity (Ruiz & Romero, 2003). Volatile organic compounds such as heptacosane and tetracosane, which were lower at Station A, have been identified as plant growth promoters (Jishma et al, 2017;Tahir et al, 2017). Stigmasterol, catechin and alphatocopherol (vitamin E) all also have roles in promoting and regulating plant growth (Dufourc, 2008;Rani et al, 2011;Semida et al, 2014).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Metabolomics and traditional indicators unveil stress of a seagrass (Cymodocea nodosa) meadow at intermediate distance from a fish farm

Kock

Hasler-Sheetal

Holmer

et al. 2020

Ecological Indicators

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Seasonal variation of structural, physiological and growth indicators and the metabolome of the seagrass Cymodocea nodosa, as well as biogeochemical conditions of underlying sediment were studied in two meadows growing at increasing distance downstream from a fish farm in the Aegean Sea in order to assess seagrass performance under stress. Horizontal rhizome production decreased significantly with proximity to the fish farm (0.67 and 1.57 g DW m-2 d-ACCEPTED MANUSCRIPT 1 close and far from the fish-farm, respectively). This coincided with observed effects on ecophyiological indicators, such as rhizome nitrogen, leaf carbon and leaf δ 13 C, which were elevated with proximity to the fish-farm. Seasonality was shown by some indicators being elevated in either in the warm (C of all tissues and leaf δ 34 S) or the cold period (N of all tissues). Growth promoting metabolites (sucrose, fructose, myo-inositol, heptacosane, tetracosane, stigmasterol, catechin and alpha-tocopherol) were lower close to the zone, whereas metabolites involved with stress-response (alanine, serine, proline, putrescine, ornithine, 3,4dihydroxybenzoic acid and cinnamic acid) were higher. We found that growth-promoting metabolites were positively correlated with horizontal rhizome production, whereas the metabolites related to stress were negatively correlated. Metabolomic fingerprinting of seagrass provides opportunities for early detection of environmental degradation in marine ecological studies.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Metabolomics and traditional indicators unveil stress of a seagrass (Cymodocea nodosa) meadow at intermediate distance from a fish farm

Kock

Hasler-Sheetal

Holmer

et al. 2020

Ecological Indicators

View full text Add to dashboard Cite

show abstract

“…It is possible that short chain growth promoting alkene semiochemicals which were detected from GC-MS analysis (e.g. Heptacosane, Nonadecane and Octadecane, Jishma et al, 2017), as well as chitin in the superworm frass may have augmented rooting (chitin was previously reported to support rooting, Winkler et al, 2017), or that there was some other auxin like compound present that would require further analysis. It should also be noted that the superworm frass was less pungent than the ammonia smelling mealworm frass, providing more reasons beyond rooting and comparable cacti growth for the use of superworm frass.…”

Section: Frass Analysismentioning

confidence: 99%

Plastic agriculture using worms: Augmenting polystyrene consumption and using frass for plant growth towards a zero-waste circular economy.

Koh

Ang

Yeo

et al. 2020

Preprint

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Polystyrene (PS) is one of the major plastics contributing to environmental pollution with its durability and resistance to biodegradation. Recent research has found mealworms ( Tenebrio molitor) and superworms ( Zophobas morio) to be able to utilize PS as a carbon food source and degrade them without toxic effects. In this study, the effects of food additives on plastic consumption augmentation were studied, with small additions of sucrose and bran found to increase PS consumption. To close the plastic carbon cycle, we also evaluated the use of worm frass for dragon fruit cacti ( Hylocereus undatus) growth and found that superworm frass supported rooting and growth better than mealworm frass and control media over a fortnight. Superworms, apart from being known fish and poultry feed, have been shown to be a suitable natural solution to the PS plastic problem that can support plant growth towards a zero-waste sustainable bioremediation cycle.

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“…Pseudomonas spp. promote plant growth or modulate root development by producing and secreting phytohormones (e.g., indole-3-acetic acid, IAA) and/or volatile organic compounds (VOCs) [4,[12][13][14][15][16][17]. Some Pseudomonas species produce IAA, which can enhance plant growth and alter root system architecture.…”

Section: Introductionmentioning

confidence: 99%

Pseudomonas PS01 Isolated from Maize Rhizosphere Alters Root System Architecture and Promotes Plant Growth

2020

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The objectives of this study were to evaluate the plant growth promoting effects on Arabidopsis by Pseudomonas sp. strains associated with rhizosphere of crop plants grown in Mekong Delta, Vietnam. Out of all the screened isolates, Pseudomonas PS01 isolated from maize rhizosphere showed the most prominent plant growth promoting effects on Arabidopsis and maize (Zea mays). We also found that PS01 altered root system architecture (RSA). The full genome of PS01 was resolved using high-throughput sequencing. Phylogenetic analysis identified PS01 as a member of the Pseudomonas putida subclade, which is closely related to Pseudomonas taiwanensis.. PS01 genome size is 5.3 Mb, assembled in 71 scaffolds comprising of 4820 putative coding sequence. PS01 encodes genes for the indole-3-acetic acid (IAA), acetoin and 2,3-butanediol biosynthesis pathways. PS01 promoted the growth of Arabidopsis and altered the root system architecture by inhibiting primary root elongation and promoting lateral root and root hair formation. By employing gene expression analysis, genetic screening and pharmacological approaches, we suggested that the plant-growth promoting effects of PS01 and the alteration of RSA might be independent of bacterial auxin and could be caused by a combination of different diffusible compounds and volatile organic compounds (VOCs). Taken together, our results suggest that PS01 is a potential candidate to be used as bio-fertilizer agent for enhancing plant growth.

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Strain-specific variation in plant growth promoting volatile organic compounds production by five different Pseudomonas spp. as confirmed by response of Vigna radiata seedlings

Cited by 45 publications

References 27 publications

Metabolomics and traditional indicators unveil stress of a seagrass (Cymodocea nodosa) meadow at intermediate distance from a fish farm

Metabolomics and traditional indicators unveil stress of a seagrass (Cymodocea nodosa) meadow at intermediate distance from a fish farm

Plastic agriculture using worms: Augmenting polystyrene consumption and using frass for plant growth towards a zero-waste circular economy.

Pseudomonas PS01 Isolated from Maize Rhizosphere Alters Root System Architecture and Promotes Plant Growth

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