Biomarkers for early selection in eucalyptus tolerant to dieback associated with water deficit

Condé, Samyra Alves; Picoli, Edgard Augusto de Toledo; Corrêa, Thais Roseli; Dias, Luíz Antônio dos Santos; Lourenço, Rodrigo Dal Sasso; Silva, Francisco Charles dos Santos; Pereira, Washington Luiz; Zauza, Edival Â. V.

doi:10.5039/agraria.v15i3a7515

Cited by 3 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several reports of the use of PEG successfully simulating water deficit stress [49][50][51][52][53][54][55]. Further, if plant roots are intact, it seems that the amounts of PEG that are absorbed may be disregarded, and it can be used for decreasing the plant water potential [53].…”

Section: Discussionmentioning

confidence: 99%

“…The differences in the phenotypic characteristics revealed common mechanisms that eucalypt plants have to cope with water deficit tolerance that contributed to the different levels of tolerance to dieback despite these phenotypes being determined on empirical evaluation in field conditions. Similar approaches have been successfully used to observe plant adaptations to water deficit [49,50], including in Eucalyptus [9,55].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Metabolic, Nutritional and Morphophysiological Behavior of Eucalypt Genotypes Differing in Dieback Resistance in Field When Submitted to PEG-Induced Water Deficit

et al. 2023

View full text Add to dashboard Cite

Dieback is a physiological disorder that has caused losses on eucalyptus plantations. Thinking that water stress is one of the triggers for the physiological disorder and aiming at the early identification of tolerant genotypes, we evaluated plantlets of four commercial clones with divergent behavior in field conditions. The plantlets were grown in a greenhouse where the drought conditions were provided by the application of polyethylene glycol 6000 solutions at 100 and 300 g L−1. After water deficit treatments, the morphological, physiological, nutritional and metabolic analyses were performed. SuzT maintained the carbon fixation and the instantaneous water use efficiency, even under water deficit, while sustaining growth. This resulted in higher leaf area and total dry mass in SuzT. Despite higher photosynthetic rate, SuzS exhibited reduced dry biomass accumulation, implying less efficient carbon use. SuzT revealed a higher level of calcium that supports cell structure and homeostasis and indicates higher capacity to manage specific resources and survival under water deficit. SuzT suffered reduction in some free amino acids; however, there was no significant variation for total amino acid content. The principal component and cluster analyses indicated that SuzMT and SuzTP genotypes behave similarly to SuzT under water deficit, while SuzS clustered in isolation. Our results support that there are common trends in water deficit responses for contrasting eucalypt genotypes. The existence of other strategies coping with water deficit resistance is not discarded and should be further evaluated.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Metabolic, Nutritional and Morphophysiological Behavior of Eucalypt Genotypes Differing in Dieback Resistance in Field When Submitted to PEG-Induced Water Deficit

et al. 2023

View full text Add to dashboard Cite

show abstract

Rapid detection of bromatological and chemical biomarkers of clones tolerant to eucalyptus physiological disorder

Nascimento,

Aguiar,

Jacomini

et al. 2024

South African Journal of Botany

View full text Add to dashboard Cite

Developing a Roadmap to Define a Potential Ideotype for Drought Tolerance in Eucalyptus

et al. 2022

View full text Add to dashboard Cite

Climate change is escalating the water crisis worldwide, leading to unpredictable water availability and water scarcity, which is among the main environmental factors affecting plant growth and yield, severely affecting the productivity of planted forests, most of them composed of Eucalyptus species. The selection of genotypes capable of growing and surviving under water scarcity is required for eucalypt cultivation in areas with seasonal or continuous drought episodes. To achieve this goal, there is the current need for the identification of potential drought tolerance bioindicators, which is a challenging task since plant responses to drought involve numerous genes and strategies. We posit that eco-physiological and morphoanatomical analyses in combination with molecular approaches could help fill the current knowledge gap. In this review, we summarize recent advances in the identification of potential indicators of drought tolerance in Eucalyptus and discuss the typical responses to drought stress, as well as their importance as bioindicators for the development of a drought-tolerant eucalypt ideotype. Study Implications: This review sheds light on Eucalyptus characteristics that potentially contribute to drought tolerance in trees of this genus. This knowledge is of paramount importance for the selection and cultivation of the best eucalypt varieties in areas experiencing seasonal or continuous water restriction.

show abstract

Biomarkers for early selection in eucalyptus tolerant to dieback associated with water deficit

Cited by 3 publications

References 23 publications

Metabolic, Nutritional and Morphophysiological Behavior of Eucalypt Genotypes Differing in Dieback Resistance in Field When Submitted to PEG-Induced Water Deficit

Metabolic, Nutritional and Morphophysiological Behavior of Eucalypt Genotypes Differing in Dieback Resistance in Field When Submitted to PEG-Induced Water Deficit

Rapid detection of bromatological and chemical biomarkers of clones tolerant to eucalyptus physiological disorder

Developing a Roadmap to Define a Potential Ideotype for Drought Tolerance in Eucalyptus

Contact Info

Product

Resources

About