The Effect of Auxin and Auxin-Producing Bacteria on the Growth, Essential Oil Yield, and Composition in Medicinal and Aromatic Plants

Çakmakçı, Ramazan; Mosber, Goltay; Milton, Ada Hazal; Alatürk, Fırat; Ali, Baboo

doi:10.1007/s00284-020-01917-4

Cited by 57 publications

(26 citation statements)

References 142 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IAA is the most common endogenous hormone and has an effective role in root elongation and growth. It results from the metabolism of L-tryptophan by various microorganisms, including plant growth-promoting bacteria (PGPB) [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study between Exogenously Applied Plant Growth Hormones versus Metabolites of Microbial Endophytes as Plant Growth-Promoting for Phaseolus vulgaris L.

Ismail

Amin

Eid

et al. 2021

Cells

View full text Add to dashboard Cite

Microbial endophytes organize symbiotic relationships with the host plant, and their excretions contain diverse plant beneficial matter such as phytohormones and bioactive compounds. In the present investigation, six bacterial and four fungal strains were isolated from the common bean (Phaseolus vulgaris L.) root plant, identified using molecular techniques, and their growth-promoting properties were reviewed. All microbial isolates showed varying activities to produce indole-3-acetic acid (IAA) and different hydrolytic enzymes such as amylase, cellulase, protease, pectinase, and xylanase. Six bacterial endophytic isolates displayed phosphate-solubilizing capacity and ammonia production. We conducted a field experiment to evaluate the promotion activity of the metabolites of the most potent endophytic bacterial (Bacillus thuringiensis PB2 and Brevibacillus agri PB5) and fungal (Alternaria sorghi PF2 and, Penicillium commune PF3) strains in comparison to two exogenously applied hormone, IAA, and benzyl adenine (BA), on the growth and biochemical characteristics of the P. vulgaris L. Interestingly, our investigations showed that bacterial and fungal endophytic metabolites surpassed the exogenously applied hormones in increasing the plant biomass, photosynthetic pigments, carbohydrate and protein contents, antioxidant enzyme activity, endogenous hormones and yield traits. Our findings illustrate that the endophyte Brevibacillus agri (PB5) provides high potential as a stimulator for the growth and productivity of common bean plants.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative Study between Exogenously Applied Plant Growth Hormones versus Metabolites of Microbial Endophytes as Plant Growth-Promoting for Phaseolus vulgaris L.

Ismail

Amin

Eid

et al. 2021

Cells

View full text Add to dashboard Cite

show abstract

“…ABA acts as a sensor (ABA-Sensor) for perception of external stress factors by plants [5]. Auxins (IAA) is another important phyto-hormone [6][7], which plays an essential role in an array of plant's basic processes of life including embryogenesis, vascular tissue formation, organ differentiation and is involved in regulating plant defense responses to environmental stress [8]. Cytokinin (CK) participates in cellular function of higher plants in various forms including zeatin, dihydrozeatin and isopentenyladenine [9][10].…”

mentioning

confidence: 99%

Mechanisms of Selected Plant Hormones under Heavy Metal Stress

Emamverdian¹,

Ding²,

Mokhberdoran³

et al. 2020

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Phytohormones are present in plant tissues either at low or high concentrations but are actively involved as chemical messengers in cellular processes [1]. Plants encounter many abiotic and biotic environmental stresses during their lifetime. It is important to know how a plant can perceive and transfer these stress signals into its physiological reaction sites to ameliorate abiotic stress such as excess of heavy metals [2]. Additionally, plant hormones act as signaling regulators mediating a link between plant and environmental cues. Hormones as a link of communication can influence internal metabolic processes of the plant via external

show abstract

“…It has been reported that more than 80% of rhizospheric bacteria are able to synthesize and release auxins. IAA production, which is common among rhizospheric bacteria, involves several biosynthesis pathways, and is carried out by a range of bacterial genera including Aeromonas, Azotbacter, Bacillus, Bradyrhizobium, Burkholderia, Enterobacter, Mesorhizobium, Pseudomonas, Rhizobium, and Sinorhizobium (Ahmad et al, 2008;Celloto et al, 2012;Sharma et al, 2016;Cakmakci et al, 2020). In some cases, a single bacterial strain produces IAA using more than one pathway.…”

Section: Phytohormone Production By Pgpr and Plant Healthmentioning

confidence: 99%

PGPR in Agriculture: A Sustainable Approach to Increasing Climate Change Resilience

Shah

Nazari

Antar

et al. 2021

Front. Sustain. Food Syst.

164

View full text Add to dashboard Cite

Growing environmental concerns are potentially narrowing global yield capacity of agricultural systems. Climate change is the most significant problem the world is currently facing. To meet global food demand, food production must be doubled by 2050; over exploitation of arable lands using unsustainable techniques might resolve food demand issues, but they have negative environmental effects. Current crop production systems are a major reason for changing global climate through diminishing biodiversity, physical and chemical soil degradation, and water pollution. The over application of fertilizers and pesticides contribute to climate change through greenhouse gas emissions (GHG) and toxic soil depositions. At this crucial time, there is a pressing need to transition to more sustainable crop production practices, ones that concentrate more on promoting sustainable mechanisms, which enable crops to grow well in resource limited and environmentally challenging environments, and also develop crops with greater resource use efficiency that have optimum sustainable yields across a wider array of environmental conditions. The phytomicrobiome is considered as one of the best strategies; a better alternative for sustainable agriculture, and a viable solution to meet the twin challenges of global food security and environmental stability. Use of the phytomicrobiome, due to its sustainable and environmentally friendly mechanisms of plant growth promotion, is becoming more widespread in the agricultural industry. Therefore, in this review, we emphasize the contribution of beneficial phytomicrobiome members, particularly plant growth promoting rhizobacteria (PGPR), as a strategy to sustainable improvement of plant growth and production in the face of climate change. Also, the roles of soil dwelling microbes in stress amelioration, nutrient supply (nitrogen fixation, phosphorus solubilization), and phytohormone production along with the factors that could potentially affect their efficiency have been discussed extensively. Lastly, limitations to expansion and use of biobased techniques, for instance, the perspective of crop producers, indigenous microbial competition and regulatory approval are discussed. This review largely focusses on the importance and need of sustainable and environmentally friendly approaches such as biobased/PGPR-based techniques in our agricultural systems, especially in the context of current climate change conditions, which are almost certain to worsen in near future.

show abstract

The Effect of Auxin and Auxin-Producing Bacteria on the Growth, Essential Oil Yield, and Composition in Medicinal and Aromatic Plants

Cited by 57 publications

References 142 publications

Comparative Study between Exogenously Applied Plant Growth Hormones versus Metabolites of Microbial Endophytes as Plant Growth-Promoting for Phaseolus vulgaris L.

Comparative Study between Exogenously Applied Plant Growth Hormones versus Metabolites of Microbial Endophytes as Plant Growth-Promoting for Phaseolus vulgaris L.

Mechanisms of Selected Plant Hormones under Heavy Metal Stress

PGPR in Agriculture: A Sustainable Approach to Increasing Climate Change Resilience

Contact Info

Product

Resources

About