Restoration of eroded soil in the Sonoran Desert with native leguminous trees using plant growth-promoting microorganisms and limited amounts of compost and water

Bashan, Yoav; Salazar, Bernardo; Moreno, Manuel; Lopez, Blanca R.; Linderman, R. G.

doi:10.1016/j.jenvman.2011.12.032

Cited by 104 publications

(90 citation statements)

References 57 publications

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“…Recent results showed that applying soil from natural ecosystems to overused agricultural soil restored fertility after 6 years (Wubs et al 2016). Likewise, planting native legume trees in combination with growthpromoting bacteria, AM fungi, and added compost in eroded Sonora Desert soil resulted in soil improvement and tree growth after 30 months (Bashan et al 2012). Both of these restoration efforts were successful, but in contrast to FMT, they also required considerable time as well as repositioning of macro-organisms and/or soil, both of which are laborious and expensive.…”

Section: Discussionmentioning

confidence: 99%

The Nodule Microbiome: N₂-Fixing Rhizobia Do Not Live Alone

Martínez‐Hidalgo

Hirsch

2017

Phytobiomes Journal

246

163

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For decades, rhizobia were thought to be the only nitrogen-fixing inhabitants of legume nodules, and biases in culture techniques prolonged this belief. However, other bacteria, which are not typical rhizobia, are often detected within nodules obtained from soil, thus revealing the existence of a phytomicrobiome where the interaction among the individuals is not only complex, but also likely to affect the behavior and fitness of the host plant. Many of these nonrhizobial bacteria are nitrogen fixers, and some also induce nitrogen-fixing nodules on legume roots. Even more striking is the incredibly diverse population of bacteria residing within nodules that elicit neither nodulation nor nitrogen fixation. Yet, this community exists within the nodule, albeit clearly out-numbered by nitrogen-fixing rhizobia. Few studies of the function of these nodule-associated bacteria in nodules have been performed, and to date, it is not known whether their presence in nodules is biologically important or not. Do they confer any benefits to the Rhizobium-legume nitrogen-fixing symbiosis, or are they parasites/saprophytes, contaminants, or commensals? In this review, we highlight the lesser-known bacteria that dwell within nitrogen-fixing nodules and discuss their possible role in this enclosed community as well as any likely benefits to the host plant or to the rhizobial inhabitants of the nodule. Although many of these nodule inhabitants are not capable of nitrogen fixation, they have the potential to enhance legume survival especially under conditions of environmental stress. This knowledge will be useful in defining strategies to employ these bacteria as bioinoculants by themselves or combined with rhizobia. Such an approach will enhance rhizobial performance or persistence as well as decrease the usage of chemical fertilizers and pesticides.

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Section: Discussionmentioning

confidence: 99%

The Nodule Microbiome: N₂-Fixing Rhizobia Do Not Live Alone

Martínez‐Hidalgo

Hirsch

2017

Phytobiomes Journal

246

163

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“…Only apple, desert legume and mango trees have been studied (Shishido 1996;Aslantas et al 2007;Bashan et al 2009;Bashan et al 2012;Jaos Frederico et al 2014). The effects of PGP bacteria on annual crops have also been the focus of research (Bashan et al 2014 and references therein).…”

Section: Discussionmentioning

confidence: 99%

Root-associated bacteria promote grapevine growth: from the laboratory to the field

et al. 2016

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Background and Aims Laboratory and greenhouse experiments have shown that root-associated bacteria have beneficial effects on grapevine growth; however, these effects have not been tested in the field. Here, we aimed to demonstrate whether bacteria of different geographical origins derived from different crop plants can colonize grapevine to gain a beneficial outcome for the plant leading to promote growth at the field scale. Methods To link the ecological functions of bacteria to the promotion of plant growth, we sorted fifteen bacterial strains from a larger isolate collection to study in vitro Plant Growth Promoting (PGP) traits. We analysed the ability of these strains to colonise the root tissues of grapevine and Arabidopsis using greenfluorescent-protein-labelled strain derivatives and a cultivation independent approach. We assessed the ability of two subsets randomly chosen from the 15 selected strains to promote grapevine growth in two field-scale experiments in north and central Italy over two years. Parameters of plant vigour were measured during the vegetative season in de novo grafted vine cuttings and adult productive plants inoculated with the bacterial strains. Results Beneficial bacteria rapidly and intimately colonized the rhizoplane and the root system of grapevine. In the field, plants inoculated with bacteria isolated from grapevine roots out-performed untreated plants. In both the tested vineyards, bacteria-promotion effects largely rely in the formation of an extended epigeal system endowed of longer shoots with larger diameters and more nodes than non-inoculated plants.Conclusions PGP bacteria isolated in the laboratory can be successfully used to promote growth of grapevines in the field. The resulting larger canopy potentially increased the photosynthetic surface of the grapevine, promoting growth.

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“…These long-term (5 y), successful shade house and field experiments used A. brasilense and PSB entrapped in microbeads, where the inoculant was added to the planting hole beneath the root balls (Bashan et al , b, 2012. (2) Cells of Pseudomonas fluorescens were encapsulated in 300 to 700 μm alginate microbeads.…”

Section: Micro-alginate Beadsmentioning

confidence: 99%

“…The dry inoculants enhanced development (dry weight, height of plants) of wheat and tomato seedlings growing in infertile soil and was biodegraded within 15 days in moist soil, using a scale of degradation (Bashan et al 2002). A microbead formulation used for desert reforestation (mentioned above) were air dried in flat trays at 30°C for 24 h without loosing efficacy (Bashan et al , b, 2012. The efficacy of freeze-dried alginate beads was tested with an agricultural strain of Pantoae agglomerans.…”

Section: Dried Polymeric Carriersmentioning

confidence: 99%

Advances in plant growth-promoting bacterial inoculant technology: formulations and practical perspectives (1998–2013)

Bashan¹,

de‐Bashan²,

et al. 2013

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Background Inoculation of plants to enhance yield of crops and performance of other plants is a century old, proven technology for rhizobia and a newer venue for plant growth-promoting bacteria and other plant symbionts. The two main aspects dominating the success of inoculation are the effectiveness of the bacterial isolate and the proper application technology. Scope An assessment of practical aspects of bacterial inoculants for contemporary agriculture and environmental restoration is critically evaluated from the point of view of their current technological status, current applications, and future use. This is done because there are windows of opportunity for new developments in applied research using renewable, non-contaminated natural resources and new venues for research. Special emphasis is given to formulations and polymeric carriers. This review concentrates on practical aspect of inoculation technology dating from 1998 to 2013. Earlier publications are mentioned only for clarification of a specific point. Conclusions This review discusses characteristics of a carrier for inoculants, formulations of inoculants including liquid, organic, inorganic, polymeric, and encapsulated formulations. Technical aspects include inoculation techniques (soil and seed application), mass culture production, bulk sterilization, seed coating, shelf-life, and effect of moisture. Future research venues needed are noted.

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Restoration of eroded soil in the Sonoran Desert with native leguminous trees using plant growth-promoting microorganisms and limited amounts of compost and water

Cited by 104 publications

References 57 publications

The Nodule Microbiome: N₂-Fixing Rhizobia Do Not Live Alone

The Nodule Microbiome: N₂-Fixing Rhizobia Do Not Live Alone

Root-associated bacteria promote grapevine growth: from the laboratory to the field

Advances in plant growth-promoting bacterial inoculant technology: formulations and practical perspectives (1998–2013)

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Restoration of eroded soil in the Sonoran Desert with native leguminous trees using plant growth-promoting microorganisms and limited amounts of compost and water

Cited by 104 publications

References 57 publications

The Nodule Microbiome: N2-Fixing Rhizobia Do Not Live Alone

The Nodule Microbiome: N2-Fixing Rhizobia Do Not Live Alone

Root-associated bacteria promote grapevine growth: from the laboratory to the field

Advances in plant growth-promoting bacterial inoculant technology: formulations and practical perspectives (1998–2013)

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The Nodule Microbiome: N₂-Fixing Rhizobia Do Not Live Alone

The Nodule Microbiome: N₂-Fixing Rhizobia Do Not Live Alone