Plant Growth Promotion by ACC Deaminase-Producing Bacilli Under Salt Stress Conditions

Santoyo, Gustavo; Equihua, Adrian; Flores, Aurora; Sepúlveda, Edgardo; Valencia-Cantero, Eduardo; Sanchez–Yáñez, Juan Manuel; Morales, Luzmaria R.; Govindappa, M.; Santos-Villalobos, Sergio de los

doi:10.1007/978-3-030-15175-1_5

Cited by 10 publications

(6 citation statements)

References 57 publications

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“…Bacillus spp. exhibiting ACC deaminase activity are reported to be halotolerant and can promote plant growth under salinity stress conditions ( Santoyo et al., 2019 ; Orozco-Mosqueda et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Functional and molecular characterization of plant growth promoting Bacillus isolates from tomato rhizosphere

Kalam

Basu

Podile

2020

Heliyon

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The rhizosphere offers a quintessential habitat for the microbial communities and facilitates a variety of plant-microbe interactions. Members of the genus Bacillus constitute an important group of plant growth promoting rhizobacteria (PGPR), which improve growth and yield of crops. In a total of 60 bacterial isolates from the tomato rhizosphere, 7 isolates were selected based on distinct morphological characteristics and designated as tomato rhizosphere (TRS) isolates with a number suffixed viz ., TRS-1, 2, 3, 4, 5, 7, and TRS-8. All the seven isolates were Gram positive, with in vitro plant growth promoting (PGP) traits like phosphate and zinc solubilization, and also produced indoleacetic acid (IAA), phytase, siderophore, hydrogen cyanide (HCN), and 1-aminocyclopropane-1-carboxylate (ACC) deaminase, besides being antagonistic to other microbes and formed biofilm. The seven isolates belonged to the genus Bacillus as per the 16S rDNA sequence analysis. Phylogenetic tree grouped the isolates into four groups, while BOX-PCR fingerprinting allowed further differentiation of the seven isolates. The PGP activity of the isolates was measured on tomato seedlings in plant tissue culture and greenhouse assays. A significant increase in root colonization was observed over 15 days with all the isolates. Greenhouse experiments with these isolates indicated an overall increase in the growth of tomato plants, over 60 days. Isolates TRS-7 and TRS-8 were best plant growth promoters among the seven isolates, with a potential as inoculants to increase tomato productivity.

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Section: Discussionmentioning

confidence: 99%

Functional and molecular characterization of plant growth promoting Bacillus isolates from tomato rhizosphere

Kalam

Basu

Podile

2020

Heliyon

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“…High concentrations of ethylene in the roots are common in plants under stress conditions, causing various physiological changes (including tissue abscission, short root length and senescence) 68,69 . The bacterial enzyme ACC deaminase acts by degrading the plant ACC, the direct precursor of ethylene (generating α‐ketobutyrate and NH 3 ) and preventing ethylene accumulation and, therefore, helping the plant to reduce the abiotic stress, promoting its growth and survival 70 . PGPB can assimilate tryptophan, an essential precursor of IAA synthesis, then produce IAA to induce the transcription of auxin response factors, promoting plant growth and amino acids like tryptophan are exuded into the rhizosphere along with other compounds (such as sugars and organic acids) 69 .…”

Section: Plant Growth Promotion and Applications In Phytoremediation ...mentioning

confidence: 99%

Bacillus thuringiensis as a biofertilizer in crops and their implications in the control of phytopathogens and insect pests

Gomis-Cebolla

Berry

2023

Pest Management Science

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BACKGROUND Bacillus thuringiensis (Bt) is a spore‐forming bacterium that produces insecticidal proteins and other virulence factors and is considered one of the most successful bioinsecticides available to control pests in agriculture. Currently, some Bt strains have been reported as endophyte or rhizospheric bacteria. RESULTS Little is known about the implications of plant‐Bt interaction in crop protection. Here, we review if Bt can establish as an endophyte/rhizobacterium and evaluate if Bt as an endophyte/rhizobacterium can simultaneously act against different phytopathogens (fungi, bacteria, insects and viruses) plus promote plant growth. CONCLUSION Although Bt produce an arsenal of proteins with toxic effects against insect, the current knowledge suggests that Bt can be considered as a promising new plant growth promotion bacterium (PGPB). The implications of the proposed review will broaden our understanding of Bt as a versatile entomopathogen that may be able to exhibit differential behavior depending on context. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…High concentrations of ethylene in the roots are common in plants under stress conditions, causing various physiological changes (including tissue abscission, short root length and senescence) 68,69 . The bacterial enzyme ACC deaminase acts by degrading the plant ACC, the direct precursor of ethylene (generating α-ketobutyrate and ammonia) and preventing ethylene accumulation and, therefore, helping the plant to reduce the abiotic stress, promoting its growth and survival 70 . For the role of the IAA, it has been proposed, that the roots of the plant exude various compounds to the rhizosphere, such as sugars, organic acids and amino acids like tryptophan Glick et al,2014 69 .…”

Section: Applications Of the Plant Growth Promotion Traits Of Bacillu...mentioning

confidence: 99%

<i>Bacillus Thuringiensis</i> as a Biofertilizer in Crops and Their Implications in the Control of Phytopathogens and Insect Pests <strong> </strong>

Gomis-Cebolla¹,

Berry²

2022

Preprint

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Bacillus thuringiensis (Bt) is a spore-forming bacterium that produces insecticidal proteins and other virulence factors and is considered one of the most successful bioinsecticides available to control pests in agriculture. Bt strains have been reported as endophyte or rhizospheric bacteria, but little is known about the implications of this property of Bt in crop protection. Here, we review if Bt can establish as an endophyte/rhizobacterium and evaluate if Bt as an endophyte/rhizobacterium can simultaneously act against different phytopathogens (fungi, bacteria, insects and viruses) plus promote plant growth. The implications of the proposed review will broaden our understanding of Bt as a versatile entomopathogen by exhibiting differential behavior depending on context.

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Plant Growth Promotion by ACC Deaminase-Producing Bacilli Under Salt Stress Conditions

Cited by 10 publications

References 57 publications

Functional and molecular characterization of plant growth promoting Bacillus isolates from tomato rhizosphere

Functional and molecular characterization of plant growth promoting Bacillus isolates from tomato rhizosphere

Bacillus thuringiensis as a biofertilizer in crops and their implications in the control of phytopathogens and insect pests

<i>Bacillus Thuringiensis</i> as a Biofertilizer in Crops and Their Implications in the Control of Phytopathogens and Insect Pests <strong> </strong>

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