The Negative Effect of Coinoculation of Plant Growth-Promoting Bacteria Is Not Related to Indole-3-Acetic Acid Synthesis

Silva, Maura Santos Reis de Andrade da; Carvalho, Rogério Falleiros; Rigobelo, Everlon Cid

doi:10.1007/s00344-022-10706-1

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…However, most auxins found in plants are bound [62]. Auxin synthesis occurs in young, developing parts of plants, such as the tips of shoots, developing leaves, or seeds [64][65][66][67]. Auxins are also synthesized in roots, namely in the meristem of the main root and in developing lateral roots [64,[68][69][70].…”

Section: The Importance Of Auxins In Plant Growth and Development Pro...mentioning

confidence: 99%

The Impact of Auxin and Cytokinin on the Growth and Development of Selected Crops

2023

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With a very diverse structure and small molecules, phytohormones are regulators of plant growth and development. Despite the fact that they are synthesized by plants in small quantities, they are highly active physiologically. According to their action, phytohormones can be divided into two categories, as either activators of plant growth and development or as inhibitors, with auxins and cytokinins belonging to the former group. Auxins are synthesized by plants in the apical meristems of shoots, but also in young leaves, seeds, and fruits. They stimulate the elongation growth of shoots and initiate the production of adventitious and lateral roots. Cytokinins, in turn, are formed in root tips and in unripe fruits and seeds. These hormones are responsible for stimulating the growth of lateral shoots, they also stimulate cytokinesis and, consequently, cell division. The aim of this review paper is to present the progress of the research on the effect of selected auxins and cytokinins on crops, considering the prospect of using them in plant growing methods.

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Section: The Importance Of Auxins In Plant Growth and Development Pro...mentioning

confidence: 99%

The Impact of Auxin and Cytokinin on the Growth and Development of Selected Crops

2023

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“…IAA produced by PGPB and the plant's endogenous IAA stimulate auxin signal transduction pathways, including various auxin response factors, thus resulting in stimulation of cell growth and proliferation (Ilangumaran and Smith, 2017). IAA synthesized by bacteria may be involved in plant-bacteria interaction at different levels, especially in plant growth and nodule formation (Lobo et al, 2023). IAA produced by PGPB can either stimulate root development when the plant inherent IAA is suboptimal, or inhibit root growth when the concentration of IAA is already optimal (Munir et al, 2022).…”

Section: Iaa Regulationmentioning

confidence: 99%

From salty to thriving: plant growth promoting bacteria as nature’s allies in overcoming salinity stress in plants

et al. 2023

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Soil salinity is one of the main problems that affects global crop yield. Researchers have attempted to alleviate the effects of salt stress on plant growth using a variety of approaches, including genetic modification of salt-tolerant plants, screening the higher salt-tolerant genotypes, and the inoculation of beneficial plant microbiome, such as plant growth-promoting bacteria (PGPB). PGPB mainly exists in the rhizosphere soil, plant tissues and on the surfaces of leaves or stems, and can promote plant growth and increase plant tolerance to abiotic stress. Many halophytes recruit salt-resistant microorganisms, and therefore endophytic bacteria isolated from halophytes can help enhance plant stress responses. Beneficial plant-microbe interactions are widespread in nature, and microbial communities provide an opportunity to understand these beneficial interactions. In this study, we provide a brief overview of the current state of plant microbiomes and give particular emphasis on its influence factors and discuss various mechanisms used by PGPB in alleviating salt stress for plants. Then, we also describe the relationship between bacterial Type VI secretion system and plant growth promotion.

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“…Some studies on the combination of PGPR have found that most of the microorganisms used in mixtures did not interfere negatively with each other (Kaur et al, 2015;Korir et al, 2017;Vandana et al, 2021). However, few reports indicate that certain mixtures of microbial strains do not show synergistic or at least comparable effects on plant growth promotion concerning the separate application of microorganisms (Felici et al, 2008;Lobo et al, 2022). These authors support the hypothesis that the co-presence of the two microorganisms may alter, directly or indirectly, the internal hormone content of the root, interfering with the normal morphogenesis of the root itself.…”

Section: Inoculation With Synergistic Bacteriamentioning

confidence: 99%

The bacterial world inside the plant

Santos

Desoignies²,

Rigobelo³

2022

Front. Sustain. Food Syst.

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Sustainable agriculture requires the recruitment of bacterial agents to reduce the demand for mineral fertilizers and pesticides such as bacterial endophytes. Bacterial endophytes represent a potential alternative to the widespread use of synthetic fertilizers and pesticides in conventional agriculture practices. Endophytes are formed by complex microbial communities and microorganisms that colonize the plant interior for at least part of their life. Their functions range from mutualism to pathogenicity. Bacterial endophytes colonize plant tissues, and their composition and diversity depend on many factors, including the plant organ, physiological conditions, plant growth stage, and environmental conditions. The presence of endophytes influences several vital activities of the host plant. They can promote plant growth, elicit a defense response against pathogen attack, and lessen abiotic stress. Despite their potential, especially with regard to crop production and environmental sustainability, research remains sparse. This review provides an overview of the current research, including the concept of endophytes, endophytes in plant organs, endophyte colonization, nutrient efficiency use, endophytes and crop nutrition, inoculation with synergistic bacteria, the effect of inoculum concentration on plant root microbiota and synthetic communities. It also examines the practical opportunities and challenges when utilizing endophytes in the field of sustainable agriculture. Finally, it explores the importance of these associations with regard to the future of agriculture and the environment.

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The Negative Effect of Coinoculation of Plant Growth-Promoting Bacteria Is Not Related to Indole-3-Acetic Acid Synthesis

Cited by 5 publications

References 31 publications

The Impact of Auxin and Cytokinin on the Growth and Development of Selected Crops

The Impact of Auxin and Cytokinin on the Growth and Development of Selected Crops

From salty to thriving: plant growth promoting bacteria as nature’s allies in overcoming salinity stress in plants

The bacterial world inside the plant

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