Changes in Leaf Anatomical Traits Enhanced Photosynthetic Activity of Soybean Grown in Hydroponics with Plant Growth-Promoting Microorganisms

Paradiso, Roberta; Arena, Carmen; Micco, Veronica De; Giordano, Maria; Aronne, Giovanna; Pascale, Stefania De

doi:10.3389/fpls.2017.00674

Cited by 52 publications

(38 citation statements)

References 71 publications

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“…Surface sterilized soybean seeds were placed on the autoclaved filter paper moistened with distilled water in petri plates [23]. After 3 days, the germinated seedlings were transferred to light for growth.…”

Section: Hydroponic Experimentsmentioning

confidence: 99%

Halotolerant rhizobacteria Pseudomonas pseudoalcaligenes and Bacillus subtilis mediate systemic tolerance in hydroponically grown soybean (Glycine max L.) against salinity stress

et al. 2020

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Salt stress is one of the devastating factors that hampers growth and productivity of soybean. Use of Pseudomonas pseudoalcaligenes to improve salt tolerance in soybean has not been thoroughly explored yet. Therefore, we observed the response of hydroponically grown soybean plants, inoculated with halotolerant P. pseudoalcaligenes (SRM-16) and Bacillus subtilis (SRM-3) under salt stress. In vitro testing of 44 bacterial isolates revealed that four isolates showed high salt tolerance. Among them, B. subtilis and P. pseudoalcaligenes showed ACC deaminase activity, siderophore and indole acetic acid (IAA) production and were selected for the current study. We determined that 10 6 cells/mL of B. subtilis and P. pseudoalcaligenes was sufficient to induce tolerance in soybean against salinity stress (100 mM NaCl) in hydroponics by enhancing plant biomass, relative water content and osmolytes. Upon exposure of salinity stress, P. pseudoalcaligenes inoculated soybean plants showed tolerance by the increased activities of defense related system such as ion transport, antioxidant enzymes, proline and MDA content in shoots and roots. The Na + concentration in the soybean plants was increased in the salt stress; while, bacterial priming significantly reduced the Na + concentration in the salt stressed soybean plants. However, the antagonistic results were observed for K + concentration. Additionally, soybean primed with P. pseudoalcaligenes and exposed to 100 mM NaCl showed a new protein band of 28 kDa suggesting that P. pseudoalcaligenes effectively reduced salt stress. Our results showed that salinity tolerance was more pronounced in P. pseudoalcaligenes as compared to B. subtilis. However, a detailed study at molecular level to interpret the mechanism by which P. pseudoalcaligenes alleviates salt stress in soybean plants need to be explored.

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Section: Hydroponic Experimentsmentioning

confidence: 99%

Halotolerant rhizobacteria Pseudomonas pseudoalcaligenes and Bacillus subtilis mediate systemic tolerance in hydroponically grown soybean (Glycine max L.) against salinity stress

et al. 2020

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“…Sen et al [73] used A. nodosum (granule or liquid sprays) in field experiments with wheat in combination NPK fertilizers. The application of two liquid sprayings in combination with fertilizers increases in the grain and straw yields, respectively, compared to the control more than 10% [74][75][76][77][78][79][80]. Liquid spraying of the seaweed extract stimulates metabolic processes in the leaf and helps the plant exploit nutrients in the leaf.…”

Section: Discussionmentioning

confidence: 99%

“…Laboratory conditions Improve growth and seed production of soybean Paradiso et al [79] Laboratory conditions Growth promoter of cowpea Chagas et al [74] Trichoderma harzianum…”

Section: Experimental Conditions Effect On the Plant Referencesmentioning

confidence: 99%

Use of Active Microrganisms in Crop Production - A Review

Holečková¹,

Kulhánek²,

Balík³

2017

J Food Process Technol

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Phosphorus, other elements and natural resources are scarce, and so it is necessary to find alternative strategy to increase availability of nutrients for plants. One possible way could be application of so-called bioeffectors (BE) which should improve the mobilisation of nutrients (especially phosphorus) from less available forms in soil, improve plant growth and contribute to mycorrhiza development. BEs are commercially supplied products which contain active substances (live microorganisms and active natural compounds). BEs can be used in organic agriculture, because their application represents no risk for the environment. Several studies and experiments are focused on impact of bioeffectors' application and their active compounds on plants. Experiments were performed under different conditions (field, pot, greenhouse), on various testing plants and on various bioeffectors. These BEs have been used as a fertilizer, fungicide or molluscicide and they were applied either to soil, seed or leaf. Application should increase growth of root system and above-ground part of plants and also nutrient uptake. These products are developed for a wide variety of crops (e.g. maize, wheat, tomatoes, rape, spinach, grass, ornamentals). This review summarizes the most recent knowledge in this scientific field. Use of Active Microrganisms in Crop Production-A ReviewZlata Holečková*, Martin Kulhánek and Jiří Balík Department of Agro-Environmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech RepublicMycorrhiza is highly effective in absorbing nutrients from the soil, especially for nitrogen and phosphorus. Nitrogen and phosphorus are often limited in supply and fungal hyphae are able to absorb these nutrients more efficiently and from greater area of soil than the roots, which leads to increased plant growth. This causes mutually beneficial linkage between plants and fungi, the sugars (organic carbon) formed during photosynthesis are transported to the roots and the fungi are taken and the nutrients are absorbed by fungal hyphae from the soil and are transported into plants [10,11]. Arbuscular mycorrhizal fungi colonise most agricultural species (exceptions include Brassica spp., and Lupinus spp.) and play an important role in the phosphorus nutrition of many farming systems worldwide, especially on soils with low available phosphorus [3]. Literature ReviewExamples of plant strategies for phosphorus obtaining: One alternative strategy in plant production can be use of unmycorrhizal organism's P mobilizing nutrients, which should help to increased nutrient availability for plants. These substances are so-called bioeffectors.

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“…Additionally, they suggested that the application of AM fungi could compensate for the reduction in chemical fertilizers, thus offering a more sustainable farming system that was respectful of the environment. The role of Plant Growth-Promoting Microorganisms (PGPM), which includes AM fungi, has been demonstrated in hydroponically grown soybean where an efficient production enhancement was achieved through an increase in photosynthetic activity [73]. N uptake by AM fungi in tomatoes has been proven to confer a competitive advantage and to fine tune the growth-defense balance for the host in N-depleted root environments [74].…”

Section: Am Fungal Utility In Hydroponic Greenhousesmentioning

confidence: 99%

Utility of Arbuscular Mycorrhizal Fungi for Improved Production and Disease Mitigation in Organic and Hydroponic Greenhouse Crops

Mishra¹,

Ellouze²,

Howard³

2018

J Hortic

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This article discusses the utility of AM fungi in vegetable crop organic and hydroponic greenhouse production systems. A significant amount of work on field and organic crops utilizing AM fungi have proven their effectiveness in vegetable crops. The current article also addresses the major benefits of AM fungal application in nonhydroponic greenhouses, such as disease mitigation and improved production, and envisages the idea of utilizing some of these benefits for hydroponic greenhouse crops by designing appropriate experimental trials and performing a cost-benefit analysis while conducting such trials. AbstractArbuscular mycorrhizal (AM) fungi are considered to be enormously important in contemporary agriculture and horticulture for their ability to improve crop disease and fertility management in commercial field and greenhouse crop production. Recently, commercial greenhouse producers have begun using AM inoculum to increase yields and provide sustainable growing conditions in organic and hydroponic production systems. However, strong evidence in support of their effectiveness in hydroponic production is still lacking. Future research is expected to address benefits of the use of AM fungi in hydroponic greenhouse crops, such as defense against pathogen, herbivore attack and the effective management of photo-assimilates by plants, which are essential for fruit production. In order to increase our understanding of the usefulness of AM fungi in hydroponic greenhouses, large-scale trial and a cost-benefit evaluation of the process are needed. This article discusses the use of AM fungi for improving organic and hydroponic greenhouse crop production and disease control, considering that AM fungi inoculations in soil-based greenhouses and fields have proven to be very effective.

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Changes in Leaf Anatomical Traits Enhanced Photosynthetic Activity of Soybean Grown in Hydroponics with Plant Growth-Promoting Microorganisms

Cited by 52 publications

References 71 publications

Halotolerant rhizobacteria Pseudomonas pseudoalcaligenes and Bacillus subtilis mediate systemic tolerance in hydroponically grown soybean (Glycine max L.) against salinity stress

Halotolerant rhizobacteria Pseudomonas pseudoalcaligenes and Bacillus subtilis mediate systemic tolerance in hydroponically grown soybean (Glycine max L.) against salinity stress

Use of Active Microrganisms in Crop Production - A Review

Utility of Arbuscular Mycorrhizal Fungi for Improved Production and Disease Mitigation in Organic and Hydroponic Greenhouse Crops

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