Ecophysiological acclimatization to cyclic water stress in Eucalyptus

Júnior, Rogério de Souza Nóia; Amaral, Genilda Canuto; Pezzopane, José Eduardo Macedo; Fonseca, Maria Imaculada; Silva, Ana Paula Câmara da; Xavier, Talita Miranda Teixeira

doi:10.1007/s11676-019-00926-9

Cited by 22 publications

(9 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Changes in plants' morphologies are the most intuitive response to abiotic stress. Plants could adapt to water stress by reducing stomata frequency, stomata length and reducing leaf thickness, as well as increasing the thickness of the palisade parenchyma [20]. Under the lead stress, the Artemisia Sacrorum var.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Physiological Changes of Broussonetia papyrifera Seedlings in Cadmium Contaminated Soil

Zhang

Zhao

et al. 2020

Plants

View full text Add to dashboard Cite

Broussonetia papyrifera is a widely distributed economic tree species, and it is also a pioneer species in adverse environments. In order to investigate the growth and adaptation mechanism of B. papyrifera under cadmium (Cd) contaminated soil, potted experiments were used with six-month treatments to study Cd enrichment and the transportation, morphological and physiological characteristics of B. papyrifera tissues. The results showed that Cd mainly accumulated in the root when the Cd concentration was high (14.71 mg/kg), and the root biomass was significantly reduced by Cd stress although Cd promoted the growth of seedlings. The bioconcentration factors (BCF) increased with the increase in Cd concentration, and reached the maximum value of 0.21 at 14.71 mg/kg. On the contrary, translocation factor (TF) decreased significantly at 8.28–14.71 mg/kg Cd concentration. Cd not only led to the loose arrangement of the xylem vessels of leaves, but also changed the chlorophyll content. However, B. papyrifera could synthesize organic solutes such as soluble protein, soluble sugar and proline to reduce the intracellular osmotic potential. Our study proved that B. papyrifera has good tolerance to Cd stress and is a pioneer tree species for soil and ecological environment restoration.

show abstract

Section: Introductionmentioning

confidence: 99%

Morphological and Physiological Changes of Broussonetia papyrifera Seedlings in Cadmium Contaminated Soil

Zhang

Zhao

et al. 2020

Plants

View full text Add to dashboard Cite

show abstract

“…Under low soil water availability, stomatal closure occurs. This reduces carbon assimilation and photosynthesis rates, which consequently affects growth [ 35 , 36 ].…”

Section: Discussionmentioning

confidence: 99%

Seasonality and Phosphate Fertilization in Carbohydrates Storage: Carapa guianensis Aubl. Seedlings Responses

Peleja

Lara

et al. 2022

Plants

View full text Add to dashboard Cite

The low availability of phosphorus and water in soil can promote the remobilization of carbohydrates in the plant, releasing energy to mitigate stress. In this context, our objective was to analyze the production and allocation of carbohydrates in plants of Carapa guianensis Aubl. submitted to different doses of phosphate fertilization, during the rainy and dry seasons, in the western region of Pará. We used three phosphorus dosages (0, 50, 250 kg ha−1) as treatments. We evaluated the plants during the dry and wet seasons. We quantified dry matter production, phosphorus content, total soluble sugars, reducing sugars, sucrose, and starch. Phosphate fertilization and different evaluation periods influenced carbohydrate concentrations (p < 0.05) in plants. The highest levels of P in the leaves were registered in October and, in the roots the content decreased with the passage of time in all treatments. The control had higher dry matter production in leaves and stems. During the dry season, there was an accumulation of carbohydrates in plants and a low production of dry matter. Soluble sugars and sucrose tended to be allocated to the stem, reducing sugars to the leaves and starch to the roots, in most periods. In general, C. guianensis seedlings were not very responsive to phosphorus addition.

show abstract

“…On the other hand, roots can act as soil environmental sensors, sending signals to the canopy [76]. Higher NSC concentrations are beneficial to keep cell turgor [77] and promote root growth [78] to optimize water uptake, especially Eucalyptus, a species with great transpiration [79]. However, different treatments had little influence on root NSC concentrations when drought stress existed in CK and F treatment (Table 1).…”

Section: Nsc Concentrations Of Tissues Under Dry-season Irrigation An...mentioning

confidence: 99%

“…We were surprised to find that fertilization and dry-season irrigation had little effect on NSC concentrations in horizontal and vertical direction, which further proved that the strategy of anisohydric species coping with drought stress is aggressive. Although it is well known that root growth greatly responds to drought and fertilization [42,43,78], past research has not adequately studied the NSC distribution underground. In order to realize NSC distribution of the entire tree under different growth patterns, further research will need to identify the NSC distribution in the underground part of Eucalyptus and its response to fertilization and irrigation.…”

Section: Tss Concentrations Decreased With Heightmentioning

confidence: 99%

Spatial Patterns of Non-Structural Carbohydrates in Eucalyptus urophylla× E. grandis under Dry-Season Irrigation with Fertilization

Kong

Liu

Huang

et al. 2021

Forests

View full text Add to dashboard Cite

Non-structural carbohydrates (NSC) affect tree growth and survival when photosynthesis is impacted by climate change, such as seasonal drought and extreme precipitation. Nevertheless, it is still unclear whether Eucalyptus suffers growth limitation under natural conditions and if trees recover under artificial cultivation. In present study, we conducted a field control experiment to compare the NSC storage in Eucalyptus urophylla × Eucalyptus grandis trees on fertilization and dry-season irrigation to determine the variations of NSC under drought stress. The results indicated total soluble sugar (TSS) was the primary existing form of NSC. In spatial patterns, NSC concentration showed gradient differences from source organ to sink organ, and finally accumulated in root. The TSS concentration showed a decreased trend with height except leaf, while the trend of starch concentration was contrast. Surprisingly, fertilization and dry-season irrigation had not changed the carbon distribution among all tissues but reduced the TSS concentration in most organs. The fast-growing E. urophylla × E. grandis will consume the assimilates and carbohydrates of storage organs, but maintains the NSC concentration at a certain threshold. Our results help to comprehend the NSC allocation and improve the productivity of E. urophylla × E. grandis plantations in seasonal arid areas.

show abstract

Ecophysiological acclimatization to cyclic water stress in Eucalyptus

Cited by 22 publications

References 50 publications

Morphological and Physiological Changes of Broussonetia papyrifera Seedlings in Cadmium Contaminated Soil

Morphological and Physiological Changes of Broussonetia papyrifera Seedlings in Cadmium Contaminated Soil

Seasonality and Phosphate Fertilization in Carbohydrates Storage: Carapa guianensis Aubl. Seedlings Responses

Spatial Patterns of Non-Structural Carbohydrates in Eucalyptus urophylla× E. grandis under Dry-Season Irrigation with Fertilization

Contact Info

Product

Resources

About