Effect of Water Deficit on Expression of Stress-related Genes in the Cambial Region of Two Contrasting Poplar Clones

Pallara, Grazia; Giovannelli, Alessio; Traversi, Maria Laura; Camussi, A.; Racchi, Marco

doi:10.1007/s00344-011-9223-y

Cited by 13 publications

(9 citation statements)

References 49 publications

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“…We hypothesize that the plant water-carbon imbalance in our O 3 -exposed poplar trees took place when the majority of the xylem elements had reached the final size. These results emphasize the central role of cambium phenology and the xylem cell maturation processes in the modulation of plant response to environmental stresses (Pallara et al, 2012).…”

Section: Discussionmentioning

confidence: 96%

Effects of long-term ambient ozone exposure on biomass and wood traits in poplar treated with ethylenediurea (EDU)

Carriero¹,

Emiliani²,

Giovannelli³

et al. 2015

Environmental Pollution

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Section: Discussionmentioning

confidence: 96%

Effects of long-term ambient ozone exposure on biomass and wood traits in poplar treated with ethylenediurea (EDU)

Carriero¹,

Emiliani²,

Giovannelli³

et al. 2015

Environmental Pollution

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“…Here, dry volume (V d ) was estimated by dividing M d by 1.53; the density value was assumed for dry cell wall material ( Pallara et al , 2012 ).…”

Section: Methodsmentioning

confidence: 99%

“…We evaluated mRNA transcription of the following genes: B-type cyclin CycB1.3-4 and CycB2.1 ; amylase Amy1.1-2 and Bam5 ; starch synthase SS2 and SS4 ; sucrose synthase Sus2 and Sus3 ; and sugar transporter Suc2.1 , SUT2.a-b , and SUT4 . Primers for the housekeeping genes Act-2 and Ef-1 were obtained according to Brunner et al (2004) and Pallara et al (2012) , respectively. Primers for CycB1.3-4 and CycB2.1 genes were obtained from Emiliani et al (2016) .…”

Section: Methodsmentioning

confidence: 99%

“…Within the genus Populus , different species show contrasting water-use efficiencies and adaptive strategies under drought conditions ( Yin et al , 2004 , 2005 ; Monclus et al , 2009 ). In poplar species, the sensitivity of the cambial region to water deficit was found to be a genotype-dependent feature; it was related to the activation of different metabolic pathways and contrasting osmotic regulation strategies ( Pallara et al , 2012 ). Water deficit in Populus deltoides ‘Dvina’ was found to affect the anatomical properties of the xylem produced following rehydration ( Cocozza et al , 2011 ).…”

Section: Introductionmentioning

confidence: 99%

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Can sugar metabolism in the cambial region explain the water deficit tolerance in poplar?

Traversari

Francini

Traversi

et al. 2018

Journal of Experimental Botany

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“…Drought further activates antioxidant defenses in the cambium of different poplar clones [Dvina ( P. deltoides ), I-214 ( P . × canadensis ), Pallara et al, 2012]. A distinct isoform of CATALASE 3 (CAT3) was strongly enhanced under water deficit, unpinning an essential role for this enzyme in ROS control under drought stress (Pallara et al, 2012).…”

Section: Molecular Physiology Of Osmotic Stressesmentioning

confidence: 99%

Engineering Drought Resistance in Forest Trees

et al. 2019

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Climatic stresses limit plant growth and productivity. In the past decade, tree improvement programs were mainly focused on yield but it is obvious that enhanced stress resistance is also required. In this review we highlight important drought avoidance and tolerance mechanisms in forest trees. Genomes of economically important trees species with divergent resistance mechanisms can now be exploited to uncover the mechanistic basis of long-term drought adaptation at the whole plant level. Molecular tree physiology indicates that osmotic adjustment, antioxidative defense and increased water use efficiency are important targets for enhanced drought tolerance at the cellular and tissue level. Recent biotechnological approaches focused on overexpression of genes involved in stress sensing and signaling, such as the abscisic acid core pathway, and down-stream transcription factors. By this strategy, a suite of defense systems was recruited, generally enhancing drought and salt stress tolerance under laboratory conditions. However, field studies are still scarce. Under field conditions trees are exposed to combinations of stresses that vary in duration and magnitude. Variable stresses may overrule the positive effect achieved by engineering an individual defense pathway. To assess the usability of distinct modifications, large-scale experimental field studies in different environments are necessary. To optimize the balance between growth and defense, the use of stress-inducible promoters may be useful. Future improvement programs for drought resistance will benefit from a better understanding of the intricate networks that ameliorate molecular and ecological traits of forest trees.

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Effect of Water Deficit on Expression of Stress-related Genes in the Cambial Region of Two Contrasting Poplar Clones

Cited by 13 publications

References 49 publications

Effects of long-term ambient ozone exposure on biomass and wood traits in poplar treated with ethylenediurea (EDU)

Effects of long-term ambient ozone exposure on biomass and wood traits in poplar treated with ethylenediurea (EDU)

Can sugar metabolism in the cambial region explain the water deficit tolerance in poplar?

Engineering Drought Resistance in Forest Trees

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