<i>Burkholderia phytofirmans</i>PsJN Primes<i>Vitis vinifera</i>L. and Confers a Better Tolerance to Low Nonfreezing Temperatures

Theocharis, Andreas; Bordiec, Sophie; Fernández, Olivier; Paquis, Sandra; Dhondt‐Cordelier, Sandrine; Baillieul, Fabienne; Clément, Christophe; Barka, Essaïd Ait

doi:10.1094/mpmi-05-11-0124

Cited by 210 publications

(109 citation statements)

References 65 publications

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“…Interestingly, the application of network analysis suggested that Burkholderia species might be keystone species in Arctic soils [21]. This is consistent with previous observations that Burkholderia taxa may confer cold tolerance to plant species exposed to low temperatures [26]. Interestingly, cold adapted Burkholderia species have also been recovered from coastal regions of the Ross Sea in Antarctica [27].…”

Section: Microbial Diversity In Cold Environmentssupporting

confidence: 87%

Microbial diversity and functional capacity in polar soils

Makhalanyane

Goethem

Cowan

2016

Current Opinion in Biotechnology

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Global change is disproportionately affecting cold environments (polar and high elevation regions), with potentially negative impacts on microbial diversity and functional processes. In most cold environments the combination of low temperatures, and physical stressors, such as katabatic wind episodes and limited water availability result in biotic systems, which are in trophic terms very simple and primarily driven by microbial communities. Metagenomic approaches have provided key insights on microbial communities in these systems and how they may adapt to stressors and contribute towards mediating crucial biogeochemical cycles. Here we review, the current knowledge regarding edaphic-based microbial diversity and functional processes in Antarctica, and the Artic. Such insights are crucial and help to establish a baseline for understanding the impact of climate change on Polar Regions. AddressCentre for Microbial Ecology and Genomics, Department of Genetics, University of Pretoria, Pretoria 0028, South Africa Corresponding author: Cowan, Don Arthur (don.cowan@up.ac.za) IntroductionThe Congress of Parties (COP) 21 meeting in Paris (November 2015) highlighted the urgency of global climate change, and the critical need to reduce global average temperatures through curbing greenhouse gas emissions [1]. Nowhere are the effects of global change more apparent than in cold environments (polar and alpine regions), which are subject to accelerated rates of warming compared to other ecosystems [2 ,3]. Climatic models have predicted that temperatures in high latitude regions of the Northern Hemisphere are likely to increase by between 0.38C and 4.88C before the end of the twenty first century [4]. There is also evidence that regions in the Southern Hemisphere have experienced the fastest warming globally, with average increases of as much as 2.48C in the last fifty years [5].A major consequence of climate change in cold environments is the thawing of submerged and surface ice, which alters the hydrology of the systems and may have adverse effects on microbial processes [6 ]. In cold environments, microorganisms (bacteria, archaea and fungi) are major constituents of the total biomass, and are estimated to mediate the cycling of key biogeochemical elements such as nitrogen and carbon, with potentially important implications for the productivity of these systems [7]. Although the precise contribution of microbial processes to global change processes are not well known, there are efforts to incorporate biological processes into Earth systems models with the realization that they may be crucial in regulating soil organic matter (SOM) [8 ]. For instance, permafrost (defined as ground which remains frozen for at least two years) in cold environments stores roughly 1600 Pg of carbon, which if released would significantly contribute towards increasing global CO 2 levels [9]. The current contribution of microbial communities to constraining carbon losses in permafrost and the influence on CO 2 levels remains virtually unknown. In ...

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Section: Microbial Diversity In Cold Environmentssupporting

confidence: 87%

Microbial diversity and functional capacity in polar soils

Makhalanyane

Goethem

Cowan

2016

Current Opinion in Biotechnology

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“…B. phytofirman was shown to play a role in enhancing chilling tolerance in Vitis vinifera L. by increasing ROS scavenging metabolites and stress-induced genes. 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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“…Proline plays multiple roles in plant stress tolerance, as a mediator of osmotic adjustment, a stabilizer of proteins and membranes, an inducer of osmotic stress-related genes, and as a scavenger of ROS (Verbruggen and Hermans 2008;Szabados and Savoure 2010;Theocharis et al 2011). The most probable roles of proline are to (a) regulate cytosol acidity, (b) stabilize the NAD ?…”

Section: Compatible Osmotica Other Than Sugarsmentioning

confidence: 99%

Physiological and molecular changes in plants grown at low temperatures

Theocharis

Clément

Barka

2012

Planta

Self Cite

584

343

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Apart from water availability, low temperature is the most important environmental factor limiting the productivity and geographical distribution of plants across the world. To cope with cold stress, plant species have evolved several physiological and molecular adaptations to maximize cold tolerance by adjusting their metabolism. The regulation of some gene products represents an additional mechanism of cold tolerance. A consequence of these mechanisms is that plants are able to survive exposure to low temperature via a process known as cold acclimation. In this review, we briefly summarize recent progress in research and hypotheses on how sensitive plants perceive cold. We also explore how this perception is translated into changes within plants following exposure to low temperatures. Particular emphasis is placed on physiological parameters as well as transcriptional, post-transcriptional and post-translational regulation of cold-induced gene products that occur after exposure to low temperatures, leading to cold acclimation.

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Burkholderia phytofirmansPsJN PrimesVitis viniferaL. and Confers a Better Tolerance to Low Nonfreezing Temperatures

Cited by 210 publications

References 65 publications

Microbial diversity and functional capacity in polar soils

Microbial diversity and functional capacity in polar soils

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

Physiological and molecular changes in plants grown at low temperatures

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