Microbiota of the Orchid Rhizoplane

  title={Microbiota of the Orchid Rhizoplane},
  author={Elena A. Tsavkelova and T. A. Cherdyntseva and Elena Lobakova and Galina L Kolomeitseva and Alexander I. Netrusov},
Six bacterial strains isolated from the underground roots of the terrestrial orchid Calanthe vestitavar. rubro-oculatawere found to belong to the genera Arthrobacter, Bacillus, Mycobacterium, and Pseudomonas.Strains isolated from the aerial roots of the epiphytic orchid Dendrobium moschatumwere classified into the genera Bacillus, Curtobacterium, Flavobacterium, Nocardia, Pseudomonas, Rhodococcus, and Xanthomonas.The rhizoplane of the terrestrial orchid was also populated by cyanobacteria of… 
Localization of Associative Cyanobacteria on the Roots of Epiphytic Orchids
This work is the first study of the localization of phototrophic microorganisms in the rhizoplane and velamen of epiphytic orchids, namely, on the aerial and substrate roots of Acampe papillosa and
Bacteria associated with the roots of epiphytic orchids
This work is the first to report the isolation and identification of bacteria colonizing the roots of the tropical epiphytic orchids Acampe papillosa (Lindl.) Lindl. and Dendrobium moschatum
Associative Cyanobacteria Isolated from the Roots of Epiphytic Orchids
In the parenchyma of the aerial roots of P. amabilis, fungal hyphae and/or their half-degraded remains were detected, which testifies to the presence of mycorrhizal fungi in this plant.
Isolation and Identification of Endophytic Bacteria from Mycorrhizal Tissues of Terrestrial Orchids from Southern Chile
The findings demonstrate the potential for plant growth promoting capabilities and some antifungal activities of endophytic bacteria inhabiting the mycorrhizal tissue of terrestrial orchids, which may contribute especially at early developmental stages of orchid seedlings.
Bacteria Associated with Orchid Roots
The performed study extends the knowledge on the diversity of the orchid microbial populations and the evident beneficial role of “satellite” bacteria in orchid propagation by localization and isolation of various phototrophic and heterotrophic bacteria from the roots of selected wild grown and greenhouse orchids.
Auxin production by bacteria associated with orchid roots
Bacteria associated with the roots of greenhouse tropical orchids were shown to produce indole-3-acetic acid (IAA) and to excrete it into the culture liquid and the ability of IAA-producing associated bacteria to act as stimulants of the host plant root development is discussed.
Microbial Endophytes of Orchid Roots
The goal of this chapter is to review the incidence and importance of endophytes in orchid roots, and to disentangle the literature on mycorrhizal fungi from that on non-mycorrhIZal endophyts.
Ecological relevance of the endophytic fungal diversity in velamen roots of tropical epiphytic orchids.
The colonisation rate and isolation rate of fungal associates in the velamen roots of three tropical epiphytic orchids were found to be distinctly the lowest in Rhynchostylis retusa.


Interaction of soil bacteria, mycorrhizal fungi and orchid seed in relation to germination of Australian orchids
The abundance of bacteria followed a seasonal pattern that differed between orchid genera especially on the basis of the morphology of fungus infected tissue, and there was little evidence of specificity of bacterial groups to orchid taxa or part of the plant infected by the fungus.
Identification of rhizobacteria from maize and determination of their plant-growth promoting potential
During the growing season of 1986, the rhizobacteria of 20 different maize hybrids sampled from different locations in the Province of Quebec were inventoried by use of seven different selective media, and two isolates consistently caused a promotion of plant growth.
Effect of IAA on symbiotic germination of an Australian orchid and its production by orchid-associated bacteria
Seven isolates of orchid-associated bacteria belonging to five species were tested for their effect on mycorrhiza-assisted germination of the terrestrial orchid Pterostylis vittata, finding symbiotic germination was enhanced by IAA, inhibited by gibberellic acid and suppressed by kinetin.
Morphological and physiological properties of symbiotic cyanobacteria
The main morphological and physiological characters of several symbiotic cyanobacterial strains, isolated from different plant—cyanobacteria associations (Anthoceros, Azolla, cycads and Gunnera) were investigated and all were found capable of photoheterotrophic growth.
Biomass increase and associative nitrogen fixation of mycorrhizal Pinus contorta seedlings inoculated with a plant growth promoting Bacillus strain.
One-month-old Pinus contorta Dougl seedlings were inoculated with mycorrhizal fungi, plant growth promoting bacteria capable of fixing nitrogen, and Bacillus strain L6 bacteria to promote plant growth.
Nonsymbiotic Germination of Orchid Seeds
The results thus far obtained indicate that the method is of value in the propagation of orchids from seeds, and the necessity of fungus infection for germination has not yet been proved.
Generic assignments, strain histories, and properties of pure cultures of cyanobacteria
Revisions are designed to permit the generic identification of cultures, often difficult through use of the field-based system of phycological classification, and are both constant and readily determinable in cultured material.
The order Orchidales, in Zhizn’ rastenii (The Life of Plants)
  • Moscow: Prosveshchenie,
  • 1982
Microbial Colonization of Rhizoplane at the Early Stages of Plant Growth, Mikrobiologiya
  • vol. 66,
  • 1997