Plant growth-promoting bacteria confer resistance in tomato plants to salt stress

Mayak, Shimon; Tirosh, Tsipora; Glick, Bernard R.

doi:10.1016/j.plaphy.2004.05.009

Cited by 1,100 publications

(639 citation statements)

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“…It is seemed the utilization ability of ACC was the most mechanism involved in root elongation and endophytic colonization by this isolate. These results are in agreement with the findings of other researchers (Glick et al 1995;Mayak et al 2004;Shaharoona et al 2006). A direct correlation has been found between in vitro bacterial ACC-deaminase activity and root growth (Mayak et al 2004;Shaharoona et al 2006).…”

Section: Discussionsupporting

confidence: 93%

“…These results are in agreement with the findings of other researchers (Glick et al 1995;Mayak et al 2004;Shaharoona et al 2006). A direct correlation has been found between in vitro bacterial ACC-deaminase activity and root growth (Mayak et al 2004;Shaharoona et al 2006). P. fluorescens strain REN 1 could well promote rice growth and probably by lowering the ACC deaminase activity affected its colonization in rice seedlings.…”

Section: Discussionsupporting

confidence: 93%

“…These bacteria not only directly promote plant growth; they also protect plants against flooding, drought, salt, flower wilting, metals, organic contaminants, and both bacterial and fungal pathogens (Glick 2013). The ability of ACCutilizing PGPR to ameliorate plant growth inhibition caused by ethylene through a decrease in ACC content and ethylene production has been repeatedly demonstrated, particularly when the plants were subjected to stressful growth conditions (Belimov et al 2001;Belimov et al 2002;Mayak et al 2004;Safronova et al 2006). However, the role of bacterial biosynthesis of ACC deaminase in endophytically colonizing of plant roots has not been reported under flooded conditions.…”

Section: Introductionmentioning

confidence: 99%

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Bacterial biosynthesis of 1-aminocyclopropane-1-caboxylate (ACC) deaminase, a useful trait to elongation and endophytic colonization of the roots of rice under constant flooded conditions

Etesami

Hosseini

Alikhani

2014

Physiol Mol Biol Plants

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This study was conducted to investigate the role of 1-aminocyclopropane-1-carboxylate (ACC) deaminase in Pseudomonas fluorescens strain REN 1 and its ability to reduce ethylene levels produced during stress, endophytically colonize and promote the elongation of the roots of rice seedlings under gnotobiotic conditions. We isolated 80 bacteria from inside roots of rice plants grown in the farmers' fields in Guilan, Iran. All of the isolates were characterized for plant growth promoting (PGP) traits. In addition, the colonization assay of these isolates on rice seedlings was carried out to screen for competent endophytes. The best bacterial isolate, based on ACC deaminase production, was identified and used for further study. 16S rDNA sequence analysis revealed that the endophyte was closely related to Pseudomonas fluorescens. The results of this study showed ACC deaminase containing P. fluorescens REN1 increased in vitro root elongation and endophytically colonized the root of rice seedlings significantly, as compared to control under constant flooded conditions. The trait of low amount of indole-3-acetic acid (IAA) production (<15 μg mL −1 ) and the high production of ACC deaminase by bacteria may be main factors in colonizing rice seedling roots compared to other PGP traits (siderophore production and phosphate solubilization) in this study. Endophytic IAA and ACC deaminase-producing bacteria may be preferential selections by rice seedlings. Therefore, it may be suggested that the utilization of ACC as a nutrient gives the isolates advantages in more endophytic colonization and increase of root length of rice seedlings.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bacterial biosynthesis of 1-aminocyclopropane-1-caboxylate (ACC) deaminase, a useful trait to elongation and endophytic colonization of the roots of rice under constant flooded conditions

Etesami

Hosseini

Alikhani

2014

Physiol Mol Biol Plants

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“…A wide range of biotic and abiotic stresses may increase endogenous levels of ethylene, which may induce senescence of leaves and flowers (MAYAK et al, 2004;SIDDIKEE et al, 2011). Ethylene may accumulate to high concentrations in the atmosphere during growth in greenhouses, shipping and storage facilities due to lack of proper ventilation and scrubbing.…”

Section: Introductionmentioning

confidence: 99%

Ethylene, 1-methylcyclopropene and silver thiosulfate on the post-production of ornamental pepper

et al. 2017

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Species from Capsicum genus are used for different purposes and in more recent years as ornamental potted plant. Despite the increased commercial importance, there are only a few studies on the environmental factors affecting the post-production shelf life of these ornamental plants. The presence of ethylene induces various responses on potted peppers, reducing the shelf life of sensitive cultivars. This study aimed to evaluate the effects of ethylene and the inhibitors of ethylene action, 1-methylcyclopropene (1-MCP) and silver thiosulfate (STS) on the shelf life of potted 'Calypso' and 'MG 302' peppers. Cultivar 'MG 302' showed intermediate sensitivity to ethylene action, while the cultivar 'Calypso' showed complete abscission of leaves when exposed to ethylene. In both cultivars, treatment with STS + Ethylene presented symptoms of phytotoxicity in plants, while treatment with 1-MCP + Ethylene was effective in delaying senescence and abscission for the cultivar 'MG 302', while cultivar 'Calypso' showed abscission similar to control plants. Plants treated with STS showed the longest durability when compared to the other treatments, about six days for 'Calypso' and 18 days for 'MG 302'. Nevertheless, plants treated with 1-MCP also exhibited good shelf life, about six days for 'Calypso' and nine days for the 'MG 302'. Although the treatment with STS was more efficient on the plants shelf life, did not completely block the action of ethylene and exhibited some phytotoxicity, while the treatment with 1-MCP had good efficiency without inducing any toxicity.

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“…Certain rhizosphere microbes are known to alleviate plant stress caused by high salinity via various mechanisms, including manipulation of plant hormone signalling (Yang et al 2009; Shrivastava and Kumar 2015; Lenoir et al 2016). Achromobacter piechaudii strain ARV8 that expresses ACC deaminase increased tomato tolerance to salt stress, presumably by reducing the production of ethylene (Mayak et al 2004). Trichoderma virens and Trichoderma atroviride helped the growth of Arabidopsis thaliana under high NaCl conditions by restoring auxin homeostasis (Contreras-Cornejo et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants?

Kang

2018

Mycology

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Volatile compounds (VCs) produced by diverse microbes seem to affect plant growth, development and/or stress tolerance. We investigated how VCs released by soilborne fungi Fusarium oxysporum and Verticillium dahliae affect Arabidopsis thaliana responses to abiotic and biotic stresses. Under salt stress, VCs from both fungi helped its growth and increased chlorophyll content. However, in contrast to wild-type A. thaliana (Col-0), V. dahliae VCs failed to increase leaf surface area in auxin signalling mutants aux1-7, tir1-1 and axr1-3. Compared to wild-type Col-0, the degree of lateral root density enhanced by V. dahliae VCs in these mutants was also reduced. Consistent with the involvement of auxin signalling in fungal VC-mediated salt torelance, A. thaliana line carrying DR5::GUS displayed increased auxin accumulation in root apex upon exposure to V. dahliae VCs, and 1-naphthylphthalamic acid, an auxin transport inhibitor, adversely affected V. dahliae VC-mediated salt tolerance. F. oxysporum VCs induced the expression of PR1 but not PDF1.2 in A. thaliana lines containing PR1::GUS and PFD1.2::GUS. When challenged with Pseudomonas syringae after the exposure to F. oxysporum VCs, A. thaliana showed reduced disease symptoms. However, the number of bacterial cells in F. oxysporum VC-treated plants was not significantly different from that in control plants.

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Plant growth-promoting bacteria confer resistance in tomato plants to salt stress

Cited by 1,100 publications

References 30 publications

Bacterial biosynthesis of 1-aminocyclopropane-1-caboxylate (ACC) deaminase, a useful trait to elongation and endophytic colonization of the roots of rice under constant flooded conditions

Bacterial biosynthesis of 1-aminocyclopropane-1-caboxylate (ACC) deaminase, a useful trait to elongation and endophytic colonization of the roots of rice under constant flooded conditions

Ethylene, 1-methylcyclopropene and silver thiosulfate on the post-production of ornamental pepper

Do volatile compounds produced by Fusarium oxysporum and Verticillium dahliae affect stress tolerance in plants?

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