Plant growth-promotion (PGP) activities and molecular characterization of rhizobacterial strains isolated from soybean (Glycine max L. Merril) plants against charcoal rot pathogen, Macrophomina phaseolina

2011 ◽  
Vol 33 (11) ◽  
pp. 2287-2295 ◽  
Author(s):  
D. K. Choudhary
Keyword(s):  
Glycine Max ◽  
Plant Growth ◽  
Molecular Characterization ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Macrophomina Phaseolina ◽  
Charcoal Rot ◽  
Glycine Max L ◽  
Pgp Activities

Plant growth promotion and suppression of charcoal-rot fungus (Macrophomina phaseolina) in velvet bean (Mucuna pruriensL.) by root nodule bacteria

2017 ◽  
Vol 165 (7-8) ◽  
pp. 463-478 ◽  
Author(s):  
Abhinav Aeron ◽  
Dinesh Kumar Maheshwari ◽  
Shrivardhan Dheeman ◽  
Mohit Agarwal ◽  
Ramesh Chand Dubey ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promotion ◽  
Root Nodule ◽  
Growth Promotion ◽  
Macrophomina Phaseolina ◽  
Nodule Bacteria ◽  
Velvet Bean ◽  
Charcoal Rot ◽  
Root Nodule Bacteria

scholarly journals Biospeckle based Sensor for Characterization of Charcoal Rot (Macrophomina phaseolina (Tassi) Goid) Disease in Soybean (Glycine max (L.) Merr.) Crop

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Puneet Singh ◽  
Amit Chatterjee ◽  
Laxman Singh Rajput ◽  
Sanjeev Kumar ◽  
Vennampally Nataraj ◽  
...  
Keyword(s):  
Glycine Max ◽  
Macrophomina Phaseolina ◽  
Charcoal Rot ◽  
Glycine Max L

scholarly journals Identification and colonization of endophytic fungi from soybean (Glycine max (L.) Merril) under different environmental conditions

2006 ◽  
Vol 49 (5) ◽  
pp. 705-711 ◽  
Author(s):  
Ida Chapaval Pimentel ◽  
Chirlei Glienke-Blanco ◽  
Juarez Gabardo ◽  
Rodrigo Makowiecky Stuart ◽  
João Lúcio Azevedo
Keyword(s):  
Biological Control ◽  
Glycine Max ◽  
Plant Growth ◽  
Endophytic Fungi ◽  
Plant Growth Promotion ◽  
Environmental Conditions ◽  
Growth Promotion ◽  
Qualitative And Quantitative ◽  
Glycine Max L ◽  
Mycelia Sterilia

A total of 297 endophytic fungi were isolated from 1728 leaf and stem fragments collected about twenty and forty days after germination from soybean (Glycine max (L.) Merril) plants grown in the field and a greenhouse. The fungi belonged to eight groups, six dematiaceous genera (Alternaria, Cladosporium, Chaetomium, Curvularia, Drechslera and Scopulariopsis) and the non-dematiaceous genera Acremonium, Aspergillus, Colletotrichum, Fusarium, Paecilomyces and Penicillium along with some Mycelia sterilia.. There were qualitative and quantitative differences in the type and number of isolates obtained from greenhouse and field-grown plants, with more isolates being obtained from the latter. No difference was found in the number of fungi isolated from leaves and stems irrespective of where the plants was grown. For was field-grown plants, the number of isolates decreased as the plants aged and more fungi were found in tissues near the soil, while for greenhouse-grown plants the number of isolates increased as the plants aged but in this case no more fungi were isolated from those tissues nearer the soil. These results could have biotechnological relevance for the biological control of pests or plant growth promotion.

scholarly journals Quorum Sensing System Affects the Plant Growth Promotion Traits of Serratia fonticola GS2

2020 ◽  
Vol 11 ◽  
Author(s):  
Byung Kwon Jung ◽  
Jerald Conrad Ibal ◽  
Huy Quang Pham ◽  
Min-Chul Kim ◽  
Gun-Seok Park ◽  
...  
Keyword(s):  
Quorum Sensing ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Biofilm Formation ◽  
Growth Promotion ◽  
Acc Deaminase ◽  
Deletion Mutants ◽  
Phenotypic Data ◽  
Collective Behaviors ◽  
Pgp Activities

Quorum sensing (QS) enables bacteria to organize gene expression programs, thereby coordinating collective behaviors. It involves the production, release, and population-wide detection of extracellular signaling molecules. The cellular processes regulated by QS in bacteria are diverse and may be used in mutualistic coordination or in response to changing environmental conditions. Here, we focused on the influence of the QS-dependent genes of our model bacterial strain Serratia fonticola GS2 on potential plant growth promoting (PGP) activities including indole-3-acetic acid (IAA) production, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, and biofilm formation. Based on genomic and phenotypic experimental data we identified and investigated the function of QS genes in the genome of the model strain. Our gene deletion study confirmed the biological functionality of the QS auto-inducer (gloI) and receptor (gloR) on potential PGP activities of GS2. A transcriptomic approach was also undertaken to understand the role of QS genes in regulation of genes primarily involved in PGP activities (IAA, ACC deaminase activity, and biofilm formation). Both transcriptomic and phenotypic data revealed that the QS-deletion mutants had considerably less PGP activities, as compared to the wild type. In addition, in vivo plant experiments showed that plants treated with GS2 had significantly higher growth rates than plants treated with the QS-deletion mutants. Overall, our results showed how QS-dependent genes regulate the potential PGP activities of GS2. This information may be helpful in understanding the relationship between QS-dependent genes and the PGP activity of bacteria, which aid in the production of practical bio-fertilizers for plant growth promotion.

scholarly journals Evaluation ofStreptomycesspp. for their plant-growth-promotion traits in rice

2013 ◽  
Vol 59 (8) ◽  
pp. 534-539 ◽  
Author(s):  
Subramaniam Gopalakrishnan ◽  
Srinivas Vadlamudi ◽  
Shravya Apparla ◽  
Prakash Bandikinda ◽  
Rajendran Vijayabharathi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promotion ◽  
Dry Matter ◽  
Microbial Biomass Carbon ◽  
Growth Promotion ◽  
Dry Weight ◽  
Available Phosphorus ◽  
Carbon And Nitrogen ◽  
Highly Sensitive ◽  
Pgp Activities

Five strains of Streptomyces (CAI-17, CAI-68, CAI-78, KAI-26, and KAI-27) were previously reported to have potential for charcoal rot control and plant growth promotion (PGP) in sorghum. In this study, those 5 Streptomyces strains were characterized for their enzymatic activities and evaluated for their PGP capabilities on rice. All the Streptomyces strains were able to produce lipase and β-1,3-glucanase; grew in NaCl (up to 8%), at pH 5–13, and at temperatures 20–40 °C; and were resistant to ampicillin, sensitive to nalidixic acid, and highly sensitive to chloramphenicol, kanamycin, streptomycin, and tetracycline. They were highly tolerant to the fungicide bavistin but were highly sensitive to benlate, benomyl, and radonil. When evaluated on rice in the field, Streptomyces significantly enhanced tiller and panicle numbers, stover and grain yields, dry matter, root length, volume and dry weight, compared with the control. In the rhizosphere at harvest, microbial biomass carbon and nitrogen, dehydrogenase activity, total nitrogen, available phosphorus, and % organic carbon were also found significantly higher in Streptomyces-treated plots than in the control plots. This study further confirms that the selected Streptomyces have PGP activities.

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