Cacti-associated rhizobacteria from Brazilian Caatinga biome induce maize growth promotion and alleviate abiotic stress

Santos, Adailson Feitoza Jesus; Morais, Jildemar Santos de; Miranda, Jean Santana; Moreira, Zayda Piedad Morales; Feitoza, Adriane Freire Araújo; Leite, Jakson; Fernandes‐Júnior, Paulo Ivan

doi:10.5039/agraria.v15i3a8221

Cited by 5 publications

(4 citation statements)

References 45 publications

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“…In drylands (arid and semi-arid regions), the association of plants (both crops and native species) with stimulating rhizobacteria is important to the plant’s establishment and development, since in addition to providing nutrients and stimulating growth, these microbes also help plants cope with drought stress [ 5 , 6 , 7 , 8 ]. These bacteria could be used as inoculants in agriculture since biofertilizers with high concentrations of microorganisms act on the growth and development of plants, increasing crop production, preserving soil life, reducing production costs, without causing damage to water resources or emissions of pollutants, and acting upon soil bioremediation [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Lima

Gomes

Rocha

et al. 2023

Plants

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A strategy using bacilli was adopted aiming to investigate the mitigation of the effects of water deficit in sesame. An experiment was carried out in a greenhouse with 2 sesame cultivars (BRS Seda and BRS Anahí) and 4 inoculants (pant001, ESA 13, ESA 402, and ESA 441). On the 30th day of the cycle, irrigation was suspended for eight days, and the plants were subjected to physiological analysis using an infrared gas analyzer (IRGA). On the 8th day of water suspension, leaves were collected for analysis: superoxide dismutase, catalase, ascorbate peroxidase, proline, nitrogen, chlorophyll, and carotenoids. At the end of the crop cycle, data on biomass and vegetative growth characteristics were collected. Data were submitted for variance analysis and comparison of means by the Tukey and Shapiro–Wilk tests. A positive effect of inoculants was observed for all characteristics evaluated, contributing to improvements in plant physiology, induction of biochemical responses, vegetative development, and productivity. ESA 13 established better interaction with the BRS Anahí cultivar and ESA 402 with BRS Seda, with an increase of 49% and 34%, respectively, for the mass of one thousand seeds. Thus, biological indicators are identified regarding the potential of inoculants for application in sesame cultivation.

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Section: Introductionmentioning

confidence: 99%

Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Lima

Gomes

Rocha

et al. 2023

Plants

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“…had a negative effect on maize plants subjected to a drying-wetting cycle in the soil. Likewise, Santos et al (190), working with cactiassociated PGPB from Brazilian Caatinga biome, found that the Bacillus sp. strains were able to increase the shoot dry weight of maize plants under water deficit.…”

Section: Plant Growth-promoting Bacteriamentioning

confidence: 93%

Revisiting the past to understand the present and future of soil health in Brazil

2023

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As Soil Scientists, we are gathering important and valuable knowledge about the chemical, physical and biological processes in soil, and with the increasing effects of climate change, this knowledge may play a pivotal role in the future of our planet. However, we must revisit crucial points in our past to understand how humanity’s evolution has shaped the current state of soil health. Furthermore, we must also consider that we are funded and supported by the society in which we live, and therefore social and political factors will inevitably play a part in the future of soil health. In this review, we address important historical aspects of crop development and soil microbiome combined with the provision of key ecosystem services to ensure soil sustainability. In addition, we provide a brief overview of key concepts related to soil health, including the criteria of the selection of indicators for soil health assessment, whilst focusing on the role of soil biology. Moreover, we provide an overview of research conducted across diverse biomes in Brazil, highlighting approaches to assess soil health in both agroecosystems and natural ecosystems. We also emphasize the significance of harnessing beneficial plant-microorganism interactions as an ecologically sustainable strategy for enhancing soil health. Finally, we conclude the review by discussing potential advancements in soil health assessment in Brazil, and their potential application in broader agricultural and forestry contexts.

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“…More recently, other Bacillus spp. from the cactus rhizosphere of Brazilian Caatinga showed the potential to promote maize growth under drought conditions ( Santos et al, 2020 ). These reports reveal cacti as an underexploited source of PGPB to crops in agricultural practices under drought conditions.…”

Section: Plant-associated Bacteria From the Caatinga Biome And Their mentioning

confidence: 99%

“…Plant-associated bacteria that positively influence plant growth and development are collectively known as plant growth-promoting bacteria (PGPB). Given the current climate change scenario and future predictions of an increase in arid lands ( Beck et al, 2018 ), the prospect of PGPB from semiarid and seasonally dry regions to enhance crop yield under stress conditions has been explored ( Kavamura et al, 2013a ; Marasco et al, 2013 ; Shrivastava and Kumar, 2015 ; Jochum et al, 2019 ; Selim et al, 2019 ; Andrade et al, 2020 ; Santana et al, 2020 ; Santos et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Beneficial Plant-Associated Microorganisms From Semiarid Regions and Seasonally Dry Environments: A Review

et al. 2021

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Semiarid regions are apparently low biodiversity environments; however, these environments may host a phylogenetically diverse microbial community associated with plants. Their microbial inhabitants are often recruited to withstand stressful settings and improve plant growth under harsh conditions. Thus, plant-associated microorganisms isolated from semiarid and seasonally dry environments will be detailed in the present review, focusing on plant growth promotion potential and the microbial ability to alleviate plant abiotic stress. Initially, we explored the role of microbes from dry environments around the world, and then, we focused on seasonally dry Brazilian biomes, the Caatinga and the Cerrado. Cultivable bacteria from semiarid and seasonally dry environments have demonstrated great plant growth promotion traits such as plant hormone production, mobilization of insoluble nutrients, and mechanisms related to plant abiotic stress alleviation. Several of these isolates were able to improve plant growth under stressful conditions commonly present in typical semiarid regions, such as high salinity and drought. Additionally, we highlight the potential of plants highly adapted to seasonal climates from the Caatinga and Cerrado biomes as a suitable pool of microbial inoculants to maintain plant growth under abiotic stress conditions. In general, we point out the potential for the exploitation of new microbial inoculants from plants growing in dry environments to ensure a sustainable increase in agricultural productivity in a future climate change scenario.

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Cacti-associated rhizobacteria from Brazilian Caatinga biome induce maize growth promotion and alleviate abiotic stress

Cited by 5 publications

References 45 publications

Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Revisiting the past to understand the present and future of soil health in Brazil

Beneficial Plant-Associated Microorganisms From Semiarid Regions and Seasonally Dry Environments: A Review

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