Table 1.
Distribution of Pseudomonas species based on rRNA homology cluster group-I and their role in plant growth promotional activities in association with specific crops.
| S. No. | rRNA homology group-I cluster | Pseudomonas species | Crop plants | Outcome | Type of inoculum | % enhancement in growth of plant | Refs. |
|---|---|---|---|---|---|---|---|
| 1. | Pseudomonas fluorescens; Pseudomonas fluorescens I; Pseudomonas fluorescens II; Pseudomonas fluorescens III; Pseudomonas fluorescens IV | Pseudomonas fluorescens | Turmeric | Growth and curcumin content | Root inoculum; | Plant height increased by 12.2% | Jaleel et al. (2007) |
| Wheat | Seed yield and shoot dry mass | Rhizobacterial inoculants | Increase in iron content of plants 40% to 30% | Garcia-Seco et al. (2013) | |||
| Mustard | Growth and yield attributes | Rhizobacterial inoculants | Plant height increased- 17.14% to 21.43% | Hou and Oluranti (2013) | |||
| Opium poppy | Morphine, thebaine, codeine | Leaf inoculums | Plant length increased 15.0% to 37.5% | Sharma et al. (2013) | |||
| Marigold | Shoot fresh weight, root dry weight, leaf number, node number | Root inoculums | Growth increased by 20–30% | Bonilla et al. (2014) | |||
| Blackberries | Fruit quality | Leaf inoculums; bacterial inoculums | Mineral uptake increased by 12% | Kumar et al. (2016b) | |||
| 2. | Pseudomonas aeruginosa; Pseudomonas chlororaphis | Pseudomonas aeruginosa | Tomato | Fruit yield | PGPR inoculums | 20% yield in tomato and maize crop | Dashti et al. (2012) |
| Pseudomonas corrugate | Maize | Grain yield | |||||
| 3. | Pseudomonas tolassi | Pseudomonas sp., Burkholderia caryophylli | Wheat | Growth and yield of wheat | PGPR inoculums | fresh and dry weight increased by 19.95% to 47.41% | Cappellari et al. (2013; Bouaichi et al. (2021) |
| 4. | Pseudomonas putida; Pseudomonas elongata; Pseudomonas geniculata; Pseudomonas pavonacea | Pseudomonas putida | Tomato | Plant growth, yield | Inoculum with different carbon sources Hexa-chlorocyclohexane-degrading consortium |
Mineral uptake enhancement by 12–19% with respect to control | Shen et al. (2012), Tang et al. (2021b) |
| Cherry trees | Fruit set, plant vegetative growth | ||||||
| Maize | Grain yield | ||||||
| 5. | Undefined (general) | Pseudomonas sp. | Wheat | Tomato | Seed inoculums | Enhanced whole plant fresh and dry weight by approximately 9–10% | Combes-Meynet et al. (2011) |
| Growth | Root growth | ||||||
| Onion | Onion bud | Rhizobacterial inoculums | |||||
| Maize | Plant height, dry weight, Compatible solutes, antioxidant |