Characterization of IAA Production by the Mangrove Cyanobacterium Phormidium sp. MI405019 and Its Influence on Tobacco Seed Germination and Organogenesis

Boopathi, Thangavelu; Balamurugan, V.; Gopinath, Selvaraj; Sundararaman, Muthuraman

doi:10.1007/s00344-013-9342-8

Cited by 38 publications

(24 citation statements)

References 35 publications

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“…The EPS of P. tenue has also been shown to promote the germination of seeds and the fitness of seedlings (Xu et al 2013), which may have been related to numerous mechanisms including water retention, provision of nutrients, and protection from oxidative stress. Furthermore, Boopathi et al (2013) showed that a Phormidium species associated with mangroves produces indole-3-acetic acid (IAA) which is an important plant hormone associated with diverse responses including enhanced germination and root growth.…”

Section: Possible Ecological Significance Of the Most Abundant Otusmentioning

confidence: 99%

Niche partitioning of bacterial communities in biological crusts and soils under grasses, shrubs and trees in the Kalahari

et al. 2014

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Elliott, D. R., Thomas, A. D., Hoon, S. R., Sen, R. (2014). Niche partitioning of bacterial communities in biological crusts and soils under grasses, shrubs and trees in the Kalahari. Biodiversity & Conservation, 23 (7), 1709-1733The Kalahari of southern Africa is characterised by sparse vegetation interspersed with microbe-dominated biological soil crusts (BSC) which deliver a range of ecosystem services including soil stabilisation and carbon fixation. We characterised the bacterial communities of BSCs (0?1 cm depth) and the subsurface soil (1?2 cm depth) in an area typical of lightly grazed Kalahari rangelands, composed of grasses, shrubs, and trees. Our data add substantially to the limited amount of existing knowledge concerning BSC microbial community structure, by providing the first bacterial community analyses of both BSCs and subsurface soils of the Kalahari region based on a high throughput 16S ribosomal RNA gene sequencing approach. BSC bacterial communities were distinct with respect to vegetation type and soil depth, and varied in relation to soil carbon, nitrogen, and surface temperature. Cyanobacteria were predominant in the grass interspaces at the soil surface (0?1 cm) but rare in subsurface soils (1?2 cm depth) and under the shrubs and trees. Bacteroidetes were significantly more abundant in surface soils of all areas even in the absence of a consolidated crust, whilst subsurface soils yielded more sequences affiliated to Acidobacteria, Actinobacteria, Chloroflexi, and Firmicutes. The common detection of vertical stratification, even in disturbed sites, suggests a strong potential for BSC recovery after physical disruption, however severe depletion of Cyanobacteria near trees and shrubs may limit the potential for natural BSC regeneration in heavily shrub-encroached areas.authorsversionPeer reviewe

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Section: Possible Ecological Significance Of the Most Abundant Otusmentioning

confidence: 99%

Niche partitioning of bacterial communities in biological crusts and soils under grasses, shrubs and trees in the Kalahari

et al. 2014

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“…Interestingly, results in [32] stated that foliar spray of some amino acids (found also here as constituents of our Spirulina preparation) [33]. In addition, methionine, which also appeared in the chemical analysis of the Spirulina platensis cells used in this study (Table 1), was found by Chen, et al and El-Awadi, et al [34,35] to involve in synthesis of growth regulation substances, encompassed cytokines, leading to increases in NPK contents and dry weight of plant shoots, while tryptophan and phenylalanine increased leaf surface area [36,37] and cysteine expressed important roles in development of cytosol and mitochondria in plant cells, improving hairy plant roots with active nutrients uptake by specific mechanisms described in [38]. Recently, glycine and glutamine were also found in foliar spray cyanobacterial stimulators [39], and also found here in this study as two of the amino acids constituents of the preparation (Table 1).…”

Section: Discussionmentioning

confidence: 57%

Differential Response of Cotton Growth, Yield and Fiber Quality to Foliar Application of Spirulina platensis and Urea Fertilizer

Yanni

El-Ashmouny²,

Elsadany

2020

AJAAR

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Aims: Evaluation if foliar spray of destructed cells of Spirulina platensis along with urea fertilizer can contribute to cotton (Gossypium barbadense L. cultivar Giza-94) plant growth, contents of photosynthetic pigments, seed cotton yield, seed index, earliness, lint percent, fineness (Micronair) and strength (Pressely). Study Design: Application of ascending rates of N fertilizer in 3 mainplot treatments and foliar spray with destructed cells of Spirulina platensis in 4 subplot treatments (Contained a non-treated control), with 3 replications. Place and Duration of Study: The Departments of Microbiology and Cotton Research, Sakha Agricultural Research Station, Kafr Elsheikh, Egypt (31º18′30″N & 30º48′14″E) during the two cotton cultivation seasons of years 2016 and 2017. Methodology: Urea (46% N) at 96, 144 or 192 kg N/ha was applied in two equal doses as main-plot treatments. Spirulina platensis was grown and total proteins, contents of 16 amino acids and Fe, K, Mn and P of dried destructed cells were determined and used for foliar application in the rates of 6, 12 or 18 g cells/ha, used as sub-plot treatments. Area of each replicated sub-plot was 12.5 m2. Calcium super phosphate (15% P2O5), potassium sulphate (48% K2O) and Insecticides (when necessary) were supplemented as common treatments. Results: Application of destructed Spirulina increased the plant leaf area, chlorophyll a, b, carotenoids and gibberellin contents, plant height, fruiting branches, open bolls/plant, seed cotton yield and seed index after ginning, fiber length, fineness (Micronair) and strength (Pressely) comparing to the corresponding non-sprayed plants. Urea at 192 kg N/ha along with destructed Spirulina exhibited superiority as enhancers of plant growth, yield and fiber qualities. Conclusion: The dual N/Spirulina combination expressed enhanced cotton growth, yield and qualities of fibers. The tested fertilization strategy is promising for enhanced cotton production economy.

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“…PGPR include nitrogen-fixing and phosphate-solubilising bacteria, for example Arthrobacter, Bacillus, Burkholderia, Enterobacter, Klebsiella, Pseudomonas, Xanthomonas and Serratia. Plant growth promotion is facilitated by the solubilisation of minerals such as phosphorus, nitrate adsorption, in addition to the production of siderophore and auxin-like substances that directly enhance plant growth (Kloepper et al 1991;Wu et al 2005;Boopathy et al 2013).…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Prospecting cyanobacterial formulations as plant-growth-promoting agents for maize hybrids

Prasanna

Hossain

Babu

et al. 2015

South African Journal of Plant and Soil

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Characterization of IAA Production by the Mangrove Cyanobacterium Phormidium sp. MI405019 and Its Influence on Tobacco Seed Germination and Organogenesis

Cited by 38 publications

References 35 publications

Niche partitioning of bacterial communities in biological crusts and soils under grasses, shrubs and trees in the Kalahari

Niche partitioning of bacterial communities in biological crusts and soils under grasses, shrubs and trees in the Kalahari

Differential Response of Cotton Growth, Yield and Fiber Quality to Foliar Application of Spirulina platensis and Urea Fertilizer

Prospecting cyanobacterial formulations as plant-growth-promoting agents for maize hybrids

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