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Hydropriming: the plant endophyte Pseudomonas argenenensis SA190 induces drought tolerance in plants via reprograming aquaporin expression and water use efficiency

ABSTRACT: Hydropriming: the plant endophyte Pseudomonas argenenensis SA190 induces drought tolerance in plants via reprograming aquaporin expression and water use efficiency

PROVIDER: PRJNA764209 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15931250_1.fastq.gz	Fastqsanger.gz
	SRR15931250_2.fastq.gz	Fastqsanger.gz
	SRR15931251_1.fastq.gz	Fastqsanger.gz
	SRR15931251_2.fastq.gz	Fastqsanger.gz
	SRR15931252_1.fastq.gz	Fastqsanger.gz

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Hydropriming: the plant endophyte Pseudomonas argenenensis SA190 induces drought tolerance in plants via reprograming aquaporin expression and water use efficiency

Project description:The objective of the study was to understand the mechanism of the interaction between Arabidopsis thaliana and SA190 under drought stress.

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DUX4 orchestrates translational reprograming by broadly suppressing translation efficiency.

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Tuning water use efficiency and drought tolerance in wheat using ABA receptors

Project description:Water availability is a key determinant of terrestrial plant productivity. Many climate models predict that water stress will increasingly challenge agricultural yields and exacerbate projected food deficits. To ensure food security and increase agricultural efficiency, crop water productivity must be increased. Research over past decades has established that the phytohormone abscisic acid (ABA) is a central regulator of water use and directly regulates stomatal opening and transpiration. In this study, we investigated whether the water productivity of wheat could be improved by increasing its ABA sensitivity. We show that overexpression of a wheat ABA receptor increases wheat ABA sensitivity, which significantly lowers a plant’s lifetime water consumption. Physiological analyses demonstrated that this water-saving trait is a consequence of reduced transpiration and a concomitant increase in photosynthetic activity, which together boost grain production per liter of water and protect productivity during water deficit. Our findings provide a general strategy for increasing water productivity that should be applicable to other crops because of the high conservation of the ABA signaling pathway.

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DUX4 orchestrates translational reprograming by broadly suppressing translation efficiency [RNA-seq]

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Microbe-induced drought tolerance by ABA-mediated root architecture and epigenetic reprograming

Project description:The use of beneficial microbes to mitigate drought stress tolerance of plants is of great potential albeit little understood. We show here that a root endophytic desert bacterium, Pseudomonas argentinensis strain SA190, enhances drought stress tolerance in Arabidopsis. Transcriptome and genetic analysis demonstrate that SA190-induced root morphogenesis and gene expression is mediated via the plant abscisic acid (ABA) pathway. Moreover, we demonstrate that SA190 primes the promoters of target genes in an epigenetic ABA-dependent manner. Application of SA190 priming on crops is demonstrated for alfalfa, showing enhanced performance under drought conditions. In summary, a single beneficial root bacterial strain can help plants to resist drought conditions.

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Endophyte-specific protection of Lolium perenne L. during rising CO2 conditions

Project description:Perennial ryegrass (Lolium perenne L.) is the most cultivated cool-season grass worldwide with crucial roles in carbon fixation and fodder for livestock. Protection of these grasses from biotic and abiotic factors are dictated through a mutually-beneficial relationship with endophytes that confer bioprotective properties. Common endophytes of the genus Epichloë promote the health and survival of cool-season forages greases and protect the plants from fluctuating environmental conditions. Climate change, and specifically, a steady increase in atmospheric CO2 levels, presents a dramatic and imminent threat faced by our ecosystem, which poses substantial pressures on plant health and survival. Defining the relationships between endophytes and the host plant may uncover mechanisms of bioprotection, which can be exploited to promote adaptable plant systems in rising CO2 conditions. In this study, we quantify changes in biomass and seed production of L. perenne L. at 400 and 800 ppm CO2 and identify endophyte-specific changes in metabolite production. Additionally, we discover protein-level changes from both the endophyte and plant perspectives, which underscore the compatible relationship between a common, natural endophyte and L. perenne L., compared to an incompatible and detrimental relationship the epichloid strain, AR1. Taken together, our data set provides new understanding into the intricacy of compatibility between endophyte and host from multiple molecular levels and suggests opportunity to promote plant robustness and survivability in rising CO2 environmental conditions through application of bioprotective epichloid strains.

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