scholarly journals Diversity and plant growth-promoting potential of actinomycetes associated with the rhizosphere of Arnebia euchroma from Himachal Pradesh (India)

2021 ◽  
Vol 42 (4) ◽  
pp. 964-972
Author(s):  
S. Devi ◽  
◽  
P. Sharma ◽  
A. Rana ◽  
J. Pal ◽  
...  
Keyword(s):  
Plant Growth ◽  
Culture Collection ◽  
Himachal Pradesh ◽  
Plate Count ◽  
N Fixation ◽  
Standard Plate Count ◽  
Arnebia Euchroma ◽  
Plant Growth Promoting Activities ◽  
Plant Growth Promoting ◽  
Growth Promoting

Aim: The present study aimed to explicate the diversity and plant growth promoting (PGP) potential of actinomycetes present in the rhizosphere of an endangered medicinal plant, Arnebia euchroma. Methodology: Rhizospheric soil samples of A. euchroma collected from trans-Himalayan region of Himachal Pradesh were processed for elucidating actinomycetes diversity and load by employing Standard Plate Count Technique. All recovered isolates were screened for their PGP potential using standard protocols. The potential strains were identified through 16SrRNA ribotyping and were deposited in the National Culture Collection Centre, NCMR, Pune, (India). Results: The rhizosphere of A. euchroma harboured a great deal of actinomycetes diversity (33 diverse morphotypes). Starch casein agar was best for isolating the actinomycetes. The same actinomycete isolate showed variations in their morphological features including pigments production on different isolation media. They exhibited multifarious plant growth-promoting activities like P- solubilization, phytase activity, N- fixation, siderophore production etc. The potential isolates were identified as Streptomyces silaceus CA7 (MK836019) and Streptomyces rectiviolaceus NA8 (MK836018). Interpretation: The actinomycetes evinced a considerable plant growth promoting potential that might be helpful in the adaptation and perpetuation of A. euchroma under prevailing harsh environmental conditions of Himachal Pradesh.

Phosphate-solubilizing peanut associated bacteria: screening for plant growth-promoting activities

2009 ◽  
Vol 329 (1-2) ◽  
pp. 421-431 ◽  
Author(s):  
Tania Taurian ◽  
María Soledad Anzuay ◽  
Jorge Guillermo Angelini ◽  
María Laura Tonelli ◽  
Liliana Ludueña ◽  
...  
Keyword(s):  
Plant Growth ◽  
Associated Bacteria ◽  
Plant Growth Promoting Activities ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Phosphate Solubilizing

scholarly journals Diversity, biocontrol, and growth promotion potential of culturable endophytic fungi isolated from root, shoot, and leaf of wild Phoebe bournei (Hemsl.) Yang across the seasons

2021 ◽  
Author(s):  
Cun Yu ◽  
Ying Yao
Keyword(s):  
Plant Growth ◽  
Endophytic Fungi ◽  
Plant Pathogens ◽  
Growth Promotion ◽  
Leaf Spot Disease ◽  
Plant Growth Promoting Activities ◽  
Potential Applicability ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Phoebe Bournei

Endophytic fungi were isolated from Phoebe bournei and their diversity and antimicrobial and plant growth-promoting activities were investigated. Of the 389 isolated endophytic fungi, 88.90% belonged to phylum Ascomycota and 11.10% to phylum Basidiomycota. The isolates were grouped into four taxonomic classes, 11 orders, 30 genera, and 45 species based on internal transcribed spacer sequencing and morphologic analysis. The host showed a strong affinity for the genera Diaporthe and Phyllosticta. The diversity of the fungi was highest in autumn, followed by spring and summer, and was lowest in winter. The fungi exhibited notable tissue specificity in P. bournei, and the species richness and diversity were highest in the root across all seasons. Five isolates showed antimicrobial activity against eight plant pathogens, and reduced the incidence of leaf spot disease in P. bournei. Additionally, 9 biocontrol isolates showed plant growth-promoting activity, with five significantly promoting P. bournei seedling growth. This is the first report on the endophytic fungi of P. bournei and their potential applicability to plant disease control and growth promotion.

scholarly journals In Vitro Plant Growth Promoting Activity of Phyllocladane Diterpenoids Isolated from Callicarpa macrophylla Vahl. in Shoot Cultures of Rauwolfia serpentina

2007 ◽  
Vol 2 (8) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
Manoj K Goel ◽  
Arun K Kukreja ◽  
Anil K Singh ◽  
Suman Preet S Khanuja
Keyword(s):  
Plant Growth ◽  
Shoot Cultures ◽  
Rauwolfia Serpentina ◽  
Plant Growth Promoting Activities ◽  
Plant Growth Promoting ◽  
Plant Tissue Cultures ◽  
Plant Growth Promoting Activity ◽  
Growth Promoting ◽  
In Vitro Shoot Cultures

Phyllocladane diterpenoids, particularly calliterpenone (1) and calliterpenone monoacetate (2), isolated from leaves of Callicarpa macrophylla, produced significantly higher growth and multiplication of in vitro shoot cultures of Rauwolfia serpentina at 0.25 and 0.5 mg/L concentrations, respectively, compared to certain other plant growth regulators (0.1-5.0 mg/L) tested under in vitro conditions. This is the first report of the plant growth promoting activities of 1 and 2 in plant tissue cultures.

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