Penicillium menonorum : A Novel Fungus to Promote Growth and Nutrient Management in Cucumber Plants (original) (raw)
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Endophytic fungi are known to be naturally occurring beneficial partners of plants which resides as good symbiont and established a positive role in plant growth promotion and enhanced resistance against stress. However, little is known about plant growth-promoting endophytes (PGPE) therefore, the aims of this study were to isolate and identify fungal endophytes and to characterize plant growth-promoting (PGP) properties. Endophyte Penicillium chrysogenum T8 was selected from among the isolates for its vital role in promoting growth of tomato seedlings and positive for phosphate solubilization. The isolate was screened positive for indole acetic acid (IAA), siderophore production, hydrogen cyanide production, phenols and flavonoids production and antibacterial activity under in vitro conditions. Endophyte associated tomato seedlings showed higher growth than the control. The results indicated that microbial endophyte isolated and characterized had a considerable impact on plant growth parameters and could be used as inoculants to establish a sustainable crop production system.
The Pharma Innovation Journal, 2019
In the present study Plant Growth Promoting Fungi (PGPF) were isolated from the rhizospheric soil of rice. Five PGPF were isolated and different plant growth promoting traits were screened. Among them PS2 showed the best PGP traits like phoaphate solubilisation, IAA, HCN, ammonia, siderophore production etc. PS2 was identified as Penicillium commune by18s r DNA sequencing. Further experiments were carried out with PS2.For pot culture assay healthy Black Gram- Vigna mungo (L.)Hepper seeds were inoculated with PS2. The PS2 treated seeds exhibited better germination percentage and seedling vigour index than the untreated control. After 30 days of treatment plant showed better root, shoot length, biomass production and photosynthetic efficacy over the control. In present day modern agricultural system is trying to find out the alternatives to reduce the detrimental effects of chemical fertilizers. So, PS2 may be used as a potent biofertilizer to overcome this problem.
Plant growth promotion and Penicillium citrinum
BMC …, 2008
Background: Endophytic fungi are known plant symbionts. They produce a variety of beneficial metabolites for plant growth and survival, as well as defend their hosts from attack of certain pathogens. Coastal dunes are nutrient deficient and offer harsh, saline environment for the existing flora and fauna. Endophytic fungi may play an important role in plant survival by enhancing nutrient uptake and producing growth-promoting metabolites such as gibberellins and auxins. We screened roots of Ixeris repenes (L.) A. Gray, a common dune plant, for the isolation of gibberellin secreting endophytic fungi.
Frontiers in Microbiology
The hydroponic farming significantly enhances the yield and enables multiple cropping per year. These advantages can be improved by using plant growth-promoting fungi (PGPF) either under normal or stress conditions. In this study, the fungal strain (A3) isolated from the rhizosphere of the halophyte plant Aeluropus littoralis was identified as Penicillium olsonii based on sequence homology of its ITS region. The A3 fungus was shown to be halotolerant (up to 1 M NaCl) and its optimal growth was at 27°C, but inhibited at 40°C. In liquid culture medium, the A3 produced indole acetic acid (IAA) especially in the presence of L-tryptophan. Tobacco plants grown under hydroponic farming system were used to evaluate the promoting activity of the direct effect of A3 mycelium (DE) and the indirect effect (IDE) of its cell-free culture filtrate (A3CFF). The results showed that for the two conditions (DE or IDE) the tobacco seedlings exhibited significant increase in their height, leaf area, dry...
2013
A rhizosphere fungus was isolated from roots of chilli plants and identified as Aspergillus spp. PPA1. The fungus was tested for its ability to promote the growth of cucumber plants in a pot experiment. Cucumber seeds were sown in sterilised field soil amended with wheat grain inoculum (WGI) of PPA 1 at the rate of 0.5, 1 and 1.5% w/w, and plants were grown for 21 days in a net house. The treatment with PPA1 significantly increased shoot length, shoot fresh weight, shoot dry weight, root length, root fresh weight, root dry weight, plant length, leaf area and leaf chlorophyll content of cucumber plants compared to non-treated control. The growth promotion rate increased with the increasing concentration of inoculum of PPA1 applied to the soil. The fungus was re-isolated from the roots of cucumber plants at higher frequencies. These results suggest that Aspergillus spp. PPA1 is a root colonising plant-growth promoting fungus for cucumber.
2021
Abstract. Syamsia S, Idhan A, Firmansyah AP, Noerfitryani N, Rahim I, Kesaulya H, Armus R. 2021. Combination on endophytic fungal as the Plant Growth-Promoting Fungi (PGPF) on Cucumber (Cucumis sativus). Biodiversitas 22: 1194-1202. Endophytic fungi are known to stimulate plant growth by producing secondary metabolites, including phytohormones (IAA and Gibberellins), siderophore, phosphate-solubilizing metabolites. In this study, a total of six endophytic fungi were successfully isolated from local rice plants and showed different abilities in producing secondary metabolites, during single isolates testing. These six isolates were then combined to obtain 15 combinations for analysis, to determine the best combination for application as a plant growth promoter. Subsequently, each combination was tested for phytohormones (IAA, gibberellins) and siderophore (quantitatively)-producing activity, phosphate-solubilizing ability, and the effect on cucumber (Cucumis sativus L) plant growth. ...
Annals of Microbiology, 2021
Purpose Rhizospheric soil fungi are critical for plant and soil health. However, their multiple functional traits and impact on plant growth have not been systematically explored. Methods During this study, biochemical traits of 73 indigenous soil fungal isolates and 15 unidentified isolates related to plant growth promotion and production of extracellular enzymes were studied. Results Forty four (65.67%) of the total isolates produced indole acetic acid (IAA) followed by siderophore (52.23%), phosphate solubilization (37.31%), and antibiotic (11.93%). 91.04% of the studied isolates produced ammonia whereas 28.35% produced organic acid. Extracellular enzyme activities of lipase, amylase, chitinase, and cellulase were detected among 95.52%, 61.11%, 35.82%, and 41.79% isolates, respectively. Based on these activities, 73 fungal isolates were categorized into different biotypes. Quantitative analysis of IAA production and phosphate solubilization was carried out for Aspergillus , Penic...
Rhizospheric Fungi to Plant Growth Promotion: A Review
Journal of Agricultural Studies, 2021
The rhizosphere is the region that has direct influence from the roots. This is the place where most of the interactions between microorganisms and plants occur. Studies involving the ecology of microbial communities from the rhizosphere became more frequent after the first reports of biological interactions of microorganisms with plants that influence physically and chemically modify the soil surrounding. According to these hypotheses, the rhizosphere mycobiota provides the development of plants through various mechanisms, direct and indirect. Thus, the objective of this review was to explain the aspects that provide characterizing these microorganisms as beneficial to plants in view of their applicability to agro-ecosystems. Therefore, it is stated that rhizospheric fungi have the solubilization of phosphorus (P), assimilating this nutrient for plants, promoting growth through the production or stimulation of the production of growth regulators such as 3-indole acetic acid, and co...
Pakistan BioMedical Journal, 2020
Plant are benefitted in different aspects by symbiotic bacteria. Environmental conditions, Plantconditions and type of pathogens determine these important services for plants Objective: Theresearch was conducted to assess the plant growth enhancing effects of wheat and cabbagerhizobacteria on the growth of wheat plant Methods: For this purpose, total 49 bacteria were isolatedand characterized from the rhizosphere of wheat and cabbage plants. The isolates were assessed forplant growth promoting properties such as: indole acetic acid production, phosphate solubilization,antibacterial activity and heavy metal resistance. Indole acetic acid was found to be produced by 7isolates and phosphate solubilization was shown by 20 isolates. Antibacterial activity was determinedagainst four clinical isolates like Staphylococcus aureus, Klebsiella sp., Escherichia coli and Pseudomonasaeruginosa Results: Antibacterial activity against Staphylococcus aureus was shown by 38 isolates, 12isolates showe...