Comparative study of transcriptional and physiological responses to salinity stress in two contrasting Populus alba L. genotypes.

@article{Beritognolo2011ComparativeSO,
  title={Comparative study of transcriptional and physiological responses to salinity stress in two contrasting Populus alba L. genotypes.},
  author={Isacco Beritognolo and Antoine Harfouche and Federico Brilli and Gianluca Prosperini and Muriel Gaudet and Mikael Brosch{\'e} and Francesco Salani and Elena Kuzminsky and Petri Auvinen and Lars Paulin and Jaakko Kangasj{\"a}rvi and Francesco Loreto and Riccardo Valentini and Giuseppe Scarascia Mugnozza and Maurizio Sabatti},
  journal={Tree physiology},
  year={2011},
  volume={31 12},
  pages={
          1335-55
        }
}
Soil salinity is an important limiting factor to tree growth and productivity. Populus alba L. is a moderately salt-tolerant species and its natural populations are adapted to contrasting environments, thus providing genetic resources to identify key genes for tolerance to abiotic stress, such as salinity. To elucidate the molecular and genetic basis of variation for salinity tolerance in P. alba, we analyzed the short-term ecophysiological and transcriptome response to salinity. Two… 

Figures and Tables from this paper

Comparing transcriptome expression profiles to reveal the mechanisms of salt tolerance and exogenous glycine betaine mitigation in maize seedlings
TLDR
The results from this study may provide the theoretical basis for determining maize salt tolerance mechanisms and the mechanism by which exogenous glycine betaine regulates salt tolerance.
Transcriptome dynamics of a desert poplar (Populus pruinosa) in response to continuous salinity stress
TLDR
It is found that gene expression rapidly and coordinately changes during this species’ adaptation to salt stress, and most DEGs were activated within 24 h of the stress and their expression stabilized after 48 h.
Genetic diversity and in vitro assessment of salt tolerance responses and associated changes in gene expression of male poplar (Populus) trees
TLDR
The response of the two clones to salt stress was associated with the up-regulation of PagHD-ZIPIII_1 gene which could be a good candidate for in vitro selection for salt tolerance genotypes.
Transcriptomic characterization of candidate genes responsive to salt tolerance of Miscanthus energy crops
TLDR
Comparison transcriptomics of different populations among different environments will provide a basis for breeding and domestication of energy crops and might reveal a potential tolerance‐productivity trade‐off, where resources were allocated from growth to stress resistance.
Identification of Salt and Drought Biochemical Stress Markers in Several Silene vulgaris Populations
This study attempted to determine short-term responses to drought and salt stress in different Silene vulgaris genotypes and to identify potential abiotic stress biochemical indicators in this
Transcriptome analysis reveals dynamic changes in the salt stress response in Salix
TLDR
This research constitutes the first detailed analysis of salt stress-related mechanisms in Salix and identifies potential targets for genetic manipulation to improve yields.
The proteome response of “Hordeum marinum” to long-term salinity stress
TLDR
A proteomic approach was applied to better understanding the mechanism of plant responses to salinity in a salt-tolerant genotype of barley, finding that oxygen species scavenging and defense may increase plant adaptation to salt stress.
Evaluating physiological responses of plants to salinity stress
TLDR
This paper discusses how to quantify the impact of salinity on different traits, and illustrates how indices can be used to identify relationships amongst the proposed traits to identify which traits are the most important contributors to salinity tolerance.
Identification and transcriptomic profiling of genes involved in increasing sugar content during salt stress in sweet sorghum leaves
TLDR
The results obtained revealed that the salt-tolerant genotype M-81E leads to increased sugar content under salt stress by protecting important structures of photosystems, by enhancing the accumulation of photosynthetic products, by increasing the production of sucrose synthetase and by inhibiting sucrose decomposition.
...
...

References

SHOWING 1-10 OF 111 REFERENCES
Comparative Transcriptional Profiling of Two Contrasting Rice Genotypes under Salinity Stress during the Vegetative Growth Stage1[w]
TLDR
Genetic variation in cell wall-related genes were responsive in both genotypes, suggesting cell wall restructuring is a general adaptive mechanism during salinity stress, although the two genotypes also had some differences.
Linking the Salt Transcriptome with Physiological Responses of a Salt-Resistant Populus Species as a Strategy to Identify Genes Important for Stress Acclimation1[W][OA]
TLDR
By dissecting the stress transcriptome of tolerant species, novel genes important for salt endurance can be identified.
Drought tolerance of two black poplar (Populus nigra L.) clones: contribution of carbohydrates and oxidative stress defence.
TLDR
Data suggest that assimilation and partitioning of carbon to the roots are decreased, resulting in mobilization of stored starch in Populus nigra plants, leading to a higher capacity to defend against oxidative stress.
Functional characterisation of three Italian Populus alba L. genotypes under salinity stress
TLDR
The functional response to salt stress was studied in three Populus alba L. genotypes from three localities of Italy and it is likely a different genetic basis underlies the different degree of salt tolerance observed.
Salinity tolerance of Populus.
TLDR
Adaptation strategies of poplars to excess soil salinity are addressed at different scales, from the cellular to the whole-plant level, with Populus euphratica being outstanding in this respect.
Transcriptome pathways unique to dehydration tolerant relatives of modern wheat
TLDR
The global comparison of transcriptomes in the absence of and after dehydration underlined the gene networks especially in root tissues that may have been lost in the selection processes generating modern bread wheats.
Salt-induced expression of genes related to Na+/K+ and ROS homeostasis in leaves of salt-resistant and salt-sensitive poplar species
TLDR
Mineral and ROS analyses show that NaCl induced a marked increase of leaf Na+ and H2O2 in LT-stressed plants of the two species and the effects were even more pronounced in the salt-sensitive poplar.
High-efficiency transformation and selective tolerance against biotic and abiotic stress in mulberry, Morus indica cv. K2, by constitutive and inducible expression of tobacco osmotin
TLDR
The overexpression of tobacco osmotin in transgenic mulberry plants under the control of a constitutive promoter (CaMV 35S) as well as a stress-inducible rd29A promoter is reported here to conclude that 35S transgenic plants are better suited for both abiotic stress also biotic challenges (fungal), while the rd 29A transgenic Plants are more responsive to drought.
Gene expression and metabolite profiling of Populus euphratica growing in the Negev desert
TLDR
Of the obtained ESTs, 98% were found in the sequenced P. trichocarpa genome and 74% in other Populus EST collections, which implies that the P. euphratica genome does not contain different genes per se, but that regulation of gene expression might be different and that P. ecstatica expresses a different set of genes that contribute to adaptation to saline growth conditions.
...
...