Morphological and Biochemical Responses of Poincianella Pyramidalis Seedlings Subjected to Water Restriction

Leite, Moadir de Sousa; Torres, Salvador Barros; Leal, Caio César Pereira; Matias, J. R.; Brito, Washington Aparecido da Luz; Aquino, Gutierres Silva Medeiros

doi:10.1590/2179-8087.014818

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…The effect of water deficit also reduced the number of leaves in Poincianella pyramidalis Tul. seedlings (LEITE et al, 2020). In collar diameter, there was a linear reduction as the period of water deficit increased and, at the most drastic level (16 days), the reduction was equal to 25.8%, compared to seedlings under continuous irrigation (control) (Figure 2A).…”

Section: Resultsmentioning

confidence: 89%

Growth and metabolism of <i>Pityrocarpa moniliformis</i> Benth. seedlings under water deficit

Guirra

Silva²,

Leal³

et al. 2022

Ciênc. Florest.

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Pityrocarpa moniliformis Benth. has medicinal properties, forage potential, besides showing rusticity and rapid growth, which confer potential to recover degraded areas. In this context, the objective was to evaluate the growth and biochemical components of Pityrocarpa moniliformis seedlings under water deficit conditions. The design used was randomized blocks, with five treatments and four replicates, with the experimental plot consisting of twenty plants. Treatments were characterized by different periods of water deficit (0; 4; 8; 12 and 16 days without irrigation). At 44 days after sowing (DAS), when the seedlings had two pairs of fully formed true leaves, the treatments began to be applied. The development of the seedlings was evaluated until 60 DAS when they were collected for biometric and biochemical analyses. The variables analyzed were shoot height; collar diameter; number of leaves; shoot dry mass; root dry mass; root/shoot ratio; and Dickson’s quality index. Contents of total chlorophyll, chlorophyll a, chlorophyll b, total free amino acids, total soluble sugar, and proline contents in the leaves were also determined. The treatment most affected by the lack of irrigation was 16 days of water deficit, which resulted in the death of 38.8% of the seedlings. This condition caused a decrease in shoot length, reducing it by approximately 29.2% compared to the control treatment. There was also a reduction in the production of new leaves from the eighth day after the differentiation of treatments. Pityrocarpa moniliformis seedlings can develop under the condition of water deficit for up to 8 days, even with chlorophyll degradation due to stress. Pityrocarpa moniliformis maintains its vegetative development by performing osmotic adjustment through the accumulation of biomolecules (sugars, proline, and amino acids).

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Section: Resultsmentioning

confidence: 89%

Growth and metabolism of <i>Pityrocarpa moniliformis</i> Benth. seedlings under water deficit

Guirra

Silva²,

Leal³

et al. 2022

Ciênc. Florest.

Self Cite

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Ecophysiological and biochemical responses of two tree species from a tropical dry forest to drought stress and recovery

Leite

Dias

Freitas

et al. 2022

Journal of Arid Environments

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Water regimes on the morphophysiological and biochemical responses of Croton blanchetianus (Euphorbiaceae)

Sousa,

Andrade,

Morais

et al. 2024

Rev. Caatinga

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Plant species occurring in the Caatinga biome, when subjected to different water fluctuations, may have their morphophysiological and metabolic performance altered. Depending on the level of stress, the production of quality seedlings is affected. Therefore, the objective of this study was to evaluate the responses to different water availability levels in the morphophysiological and biochemical development of Croton blanchetianus Baill. The experiment was carried out in a greenhouse, evaluating four water regimes: 25%, 50%, 75% and 100% of pot capacity, and conducted in a randomized block design, with a total 5 blocks. The variables analyzed were: branch height and branch diameter; leaf area, number of leaves, root volume; root dry mass, shoot dry mass, total dry mass and root/shoot ratio; relative water content, proline, total soluble proteins, malondialdehyde, hydrogen peroxide, and photo synthetic pigments (chlorophyll ɑ, chlorophyll b, and carotenoids). The species Croton blanchetianus Baill. shows drought tolerance mechanisms, demonstrated by the reductions of growth, leaf area, dry mass of seedlings and photo synthetic pigments. It adjusts osmotically with increments in the production of proline, which acts in osmoprotection when there is water deficit, and in the production of proteins under the lower and higher water regime. The species has full development of seedlings under water regimes between 75% and 80% and adapts to different water fluctuations.

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Morphological and Biochemical Responses of Poincianella Pyramidalis Seedlings Subjected to Water Restriction

Cited by 3 publications

References 24 publications

Growth and metabolism of <i>Pityrocarpa moniliformis</i> Benth. seedlings under water deficit

Growth and metabolism of <i>Pityrocarpa moniliformis</i> Benth. seedlings under water deficit

Ecophysiological and biochemical responses of two tree species from a tropical dry forest to drought stress and recovery

Water regimes on the morphophysiological and biochemical responses of Croton blanchetianus (Euphorbiaceae)

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