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They have been reported to colonize endophytic tissues of hybrid spruce (Picea glauca x engelmannii) and lodgepole pine with a strong potential to perform biological nitrogen fixation and plant growth promotion. [3] [4] [5]
Direct mechanisms of plant growth promotion by PGPRs can be demonstrated in the absence of plant pathogens or other rhizosphere microorganisms, while indirect mechanisms involve the ability of PGPRs to reduce the harmful effects of plant pathogens on crop yield. PGPRs have been reported to directly enhance plant growth by a variety of mechanisms:
Torulaspora globosa is a yeast fungus in the genus Torulaspora.This species can be found in the rhizosphere and is beneficial for agricultural activities. Considered a plant growth promoting rhizobacteria, this species helps with plant health maintenance. [1]
Paraburkholderia is a genus of Pseudomonadota that are gram negative, slightly curved rods that are motile by means of flagella.They have been reported to colonize endophytic tissues of hybrid spruce (Picea glauca x engelmannii) and lodgepole pine with a strong potential to perform biological nitrogen fixation and plant growth promotion.
Endophytes may benefit host plants by preventing other pathogenic or parasitic organisms from colonizing them. Endophytes can extensively colonize plant tissues and competitively exclude other potential pathogens. [13] [14] Some fungal and bacterial endophytes have proven to increase plant growth and improve overall plant hardiness. [15]
The Plant Journal is a peer-reviewed scientific journal of plant science published by Wiley-Blackwell for the Society for Experimental Biology. It was established in 1991 and is currently edited by Katherine J. Denby .
Azospirillum genus harbor over than 20 described species. Despite the remarkable plant growth-promotion properties, less than half of Azospirillum species have the genome sequenced: A. brasilense, A. thiophilum, A. lipoferum, A. oryzae, A. palustre, A. doebereinerae, A. halopraeferens and several undescribed Azospirillum sp. strains.
Pseudomonas migulae is a fluorescent, Gram-negative, rod-shaped bacterium isolated from natural mineral waters in France. [1] This bacterium has also been isolated from endophytic tissues of lodgepole pine trees growing on gravel mining sites with potential to perform biological nitrogen fixation and plant growth promotion.