<i>Burkholderia phytofirmans</i>PsJN Acclimates Grapevine to Cold by Modulating Carbohydrate Metabolism

Fernández, Olivier; Theocharis, Andreas; Bordiec, Sophie; Feil, Regina; Jacquens, Lucile; Clément, Christophe; Fontaine, Florence; Barka, Essaïd Ait

doi:10.1094/mpmi-09-11-0245

Cited by 217 publications

(118 citation statements)

References 60 publications

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“…Contrary to our results reported increase in antioxidant enzymes activity under abiotic stress in wheat by bacterial inoculation. Along with production of antioxidant enzymes, plants also accumulate some other compounds such as phenolics and sugars which not only act as osmoregulators but also scavenge reactive oxygen species (ROS) (Fernandez et al, 2012;Theocharis et al, 2012). In our study, we found increase in content of sugars and phenolics under salt stressed conditions.…”

Section: Discussionsupporting

confidence: 52%

Auxin Producing Plant Growth Promoting Rhizobacteria Improve Growth, Physiology and Yield of Maize under Saline Field Conditions

Iqbal¹,

Khalid²,

Zahir³

et al. 2015

IJAB

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To cite this paper: Iqbal, M.A., M. Khalid, Z.A. Zahir and R. Ahmad, 2016. Auxin producing plant growth promoting rhizobacteria improve growth, physiology and yield of maize under saline field conditions. AbstractSoil salinity is one of the most widespread agricultural problems which reduce the field crop productivity. Salinity disturbs the hormonal balance in plants which results in poor growth. Use of plant growth promoting rhizobacteria (PGPR) is considered an economical and environment-friendly approach to combat salinity stress. This study was carried out to investigate the effect of auxin producing PGPR on the growth, antioxidant status and mineral content of maize (Zea mays) in salt affected soils. Rhizobacterial strains were isolated from the rhizosphere of maize growing under salt affected soil conditions. These strains were screened on the basis of auxin production and their ability to withstand salinity stress. Two stains (MA4 and MA11) which produced highest auxin and tolerated maximum salinity were selected for further evaluation in a field experiment. The results of field trial showed that soil salinity reduced the plant growth, mineral nutrient uptake and yield of maize while antioxidant activity and proline concentration was increased. However, rhizobacterial inoculation improved grain yield (31%), fresh biomass (56%) and phosphorous contents in grains (26%) while the proline concentration (41%), ascorbate peroxidase (59%) and SOD values (42%) in leaves were declined. The results of present study signify the role of auxin producing rhizobacteria under salt affected field conditions.

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Section: Discussionsupporting

confidence: 52%

Auxin Producing Plant Growth Promoting Rhizobacteria Improve Growth, Physiology and Yield of Maize under Saline Field Conditions

Iqbal¹,

Khalid²,

Zahir³

et al. 2015

IJAB

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“…Inoculated plants also recovered faster from chilling stress, returning to normal metabolic levels more quickly than controls [33]. B. phytofirman inoculation also alters carbohydrate metabolism and accumulation while having a protective effect on net photosynthesis during cold acclimation and stress [32,92].…”

Section: Key Mechanisms Targeted By Humic and Fulvic Acid Based Biostmentioning

confidence: 93%

The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

Oosten

Pepe

Pascale

et al. 2017

Chem. Biol. Technol. Agric.

654

399

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The use of bioeffectors, formally known as plant biostimulants, has become common practice in agriculture and provides a number of benefits in stimulating growth and protecting against stress. A biostimulant is loosely defined as an organic material and/or microorganism that is applied to enhance nutrient uptake, stimulate growth, enhance stress tolerance or crop quality. This review is intended to provide a broad overview of known effects of biostimulants and their ability to improve tolerance to abiotic stresses. Inoculation or application of extracts from algae or other plants have beneficial effects on growth and stress adaptation. Algal extracts, protein hydrolysates, humic and fulvic acids, and other compounded mixtures have properties beyond basic nutrition, often enhancing growth and stress tolerance. Non-pathogenic bacteria capable of colonizing roots and the rhizosphere also have a number of positive effects. These effects include higher yield, enhanced nutrient uptake and utilization, increased photosynthetic activity, and resistance to both biotic and abiotic stresses. While most biostimulants have numerous and diverse effects on plant growth, this review focuses on the bioprotective effects against abiotic stress. Agricultural biostimulants may contribute to make agriculture more sustainable and resilient and offer an alternative to synthetic protectants which have increasingly falling out of favour with consumers. An extensive review of the literature shows a clear role for a diverse number of biostimulants that have protective effects against abiotic stress but also reveals the urgent need to address the underlying mechanisms responsible for these effects.

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“…It was shown that bacterial endophyte Burkholderia phytofirmans PsJN enhances cold tolerance of grapevine plants by altering photosynthetic activity and metabolism of carbohydrates involved in cold stress tolerance (Ait et al, 2006;Fernandez et al, 2012). The bacterium presence in the plant promoted acclimation to chilling temperatures resulting in lower cell damage, higher photosynthetic activity, and accumulation of cold-stress-related metabolites such as starch, proline, and phenolic compounds.…”

Section: Role Of Endophytes In Adaptation Of Agricultural Crops To Bimentioning

confidence: 99%

Bacterial endophytes in agricultural crops and their role in stress tolerance: a review

Miliūtė

Buzaitė

Baniulis

et al. 2015

Zemdirbyste-Agriculture

205

112

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Bacterial endophytes are a class of endosymbiotic microorganisms widespread among plants that colonize intercellular and intracellular spaces of all plant compartments and do not cause plant disease or significant morphological changes. Plant and endophytic bacteria association includes vast diversity of bacterial taxa and plant hosts and in this review we present an overview of taxonomic composition of endophytes identified in common agricultural crops. Further, during the last decade, new aspects of the microbial diversity have emerged with application of new metagenomic analysis methods in studies of bacterial endophytes. Endophytic bacteria community structure is influenced by plant genotype, abiotic and biotic factors such as environment conditions, microbe -microbe interactions and plant -microbe interactions. Agricultural practices, such as soil tillage, irrigation, use of pesticides and fertilizers have a major effect on function and structure of soil and endophytic microbial populations. Therefore, the use of agricultural practices that maintain natural diversity of plant endophytic bacteria is becoming an important element of sustainable agriculture that could ensure plant productivity and quality of agricultural production. The diverse endophytic microbial communities play integral and unique role in the functioning of agroecosystems. Endophytic bacteria have been shown to have several beneficial effects on their host plant, including growth promoting activity, modulation of plant metabolism and phytohormone signalling that leads to adaptation to environmental abiotic or biotic stress. Use of endophytic bacteria presents a special interest for development of agricultural applications that ensure improved crop performance under cold, draught or contaminated soil stress conditions or enhanced disease resistance.

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Burkholderia phytofirmansPsJN Acclimates Grapevine to Cold by Modulating Carbohydrate Metabolism

Cited by 217 publications

References 60 publications

Auxin Producing Plant Growth Promoting Rhizobacteria Improve Growth, Physiology and Yield of Maize under Saline Field Conditions

Auxin Producing Plant Growth Promoting Rhizobacteria Improve Growth, Physiology and Yield of Maize under Saline Field Conditions

The role of biostimulants and bioeffectors as alleviators of abiotic stress in crop plants

Bacterial endophytes in agricultural crops and their role in stress tolerance: a review

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