Photosynthetic metabolism and antioxidant in Ormosia arborea are modulated by abscisic acid under water deficit?

Bastos, S S; Scalon, Silvana de Paula Quintão; Souza, Ana Paula Rissato de; Dresch, Daiane Mugnol; Junglos, Fernanda Soares; Scalon, Lourenço Quintão; Mussury, Rosilda Mara; Freitas, V M B

doi:10.1590/1519-6984.244331

Cited by 5 publications

(3 citation statements)

References 17 publications

(24 reference statements)

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“…The complex anatomy of plant leaves played a key role in plant growth and development, which related to the response of the water deficit (Barbour and Farquhar 2004). Detection of leaf water potential was one of the best method to measure plant water deficit, that was usually used to guide the amount of irrigation water in planting (Bastos et al 2022). Although there were many methods of measuring the leaf water potential, it remained to be determined which method will be most accurate in the context of RDI (Atherton et al 2012;Cheng et al 2011;Higa et al 2013;Sperry et al 1996; Ullah et al 2013;Yi et al 2013;Zhang et al 2012).…”

Section: Shoots and Leavesmentioning

confidence: 99%

Regulated deficit irrigation: an effective way to solve the shortage of agricultural water for horticulture

Yang

et al. 2022

Stress Biology

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The deficient agricultural water caused by water shortage is a crucial limiting factor of horticultural production. Among many agricultural water-saving technologies, regulated deficit irrigation (RDI) has been proven to be one of the effective technologies to improve water use efficiency and reduce water waste on the premise of maintaining the quality of agricultural products. RDI was first reported more than 40 years ago, although it has been applied in some areas, little is known about understanding of the implementation method, scope of application and detailed mechanism of RDI, resulting in the failure to achieve the effect that RDI should have. This review refers to the research on RDI in different crops published in recent years, summarizes the definition, equipment condition, function, theory illumination, plant response and application in different crops of RDI, and looks forward to its prospect. We expect that this review will provide valuable guidance for researchers and producers concerned, and support the promotion of RDI in more horticultural crops.

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Section: Shoots and Leavesmentioning

confidence: 99%

Regulated deficit irrigation: an effective way to solve the shortage of agricultural water for horticulture

Yang

et al. 2022

Stress Biology

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“…Ormosia arborea (Vell.) Harms (Fabaceae: Papilionoideae) is a species native to the Atlantic forest and the Cerrado, it can grow in riparian environments or in well-drained soil, and its introduction into plantations for recovery of degraded areas is recommended to stimulate recovery (Junglos et al 2018;Bastos et al 2022). The physical dormancy of its seeds, which is caused by seed coat impermeability, can be overcome by chemical scarification with sulfuric acid for 15 minutes (Silva et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Tolerance of Ormosia arborea (Fabaceae) seed to water submersion

Junglos

Dresch

et al. 2022

Rodriguésia

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Soil flooding restricts the availability of the oxygen necessary to activate the embryonic physiological processes that characterize seed germination. However, some species have adaptations that allow them to grow naturally in areas prone to flooding, such as Ormosia arborea, a native species of the Atlantic forest and the Cerrado. The objective of this work was to evaluate how seed germination and emergence in this species were affected by submersion in water and scarification. In experiment 1, the seeds were scarified by 15 minutes in sulfuric acid and was subsequently sown in tubes submerged in water for 0, 15, 30 and 45 days. In experiments 2 and 3, seeds were submerged in running water for the same period and, after each time of submersion, were scarified by 0, 5, 10 and 15 minutes in sulfuric acid and sown either in tubes and in Germitest® paper. It was found that, after breaking the tegumental dormancy, 15 days of flooding is enough to derail the germination of O. arborea seeds that tolerate submersion in water when they are intact. This response indicates that the hard, impermeable seed coat is an important seed characteristic for this response.

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“…Light and water availability are abiotic factors that directly influence plant growth, once they are related to metabolic adjustments through chlorophyll a fluorescence and photosynthetic metabolism of each species, especially in function of their ecological group. So, since O. arborea plant are found in humid and shading environments (Junglos et al 2016;Carvalho 2008), and that water restriction is a limiting factor for the photosynthetic metabolism of seedlings of this species (Bastos et al 2022), we hypothesized that shading levels mitigates the stressful effect of water restriction, keeping gas exchanges and photochemical of photosynthesis and the growth of seedlings of O. arborea stable, which is made possible by the action of antioxidant enzymes, thus facilitating its recovery after the resumption of the water supply.…”

Section: Introductionmentioning

confidence: 99%

Does shading mitigate water restriction in Ormosia arborea seedlings?

et al. 2022

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This study aimed to evaluate the potential of shading in reducing the stressful effect of water restriction on photosynthetic and antioxidant metabolism, favoring the growth of Ormosia arborea seedlings and the recovery metabolic. The shadings levels studied were: 0, 30 and 70%. Two water regimes were implemented: control, in which the plants were irrigated at 75% of soil water retention capacity and water restriction, in which the irrigation was suspended until the photosynthetic rate reached values close to zero (P0), period at which the seedlings were re-irrigated. There were two evaluation periods: P0 and recovery. We observed that water restriction reduced photosynthetic metabolism, growth and quality of O. arborea seedlings by increasing the activity of antioxidant enzymes. The seedlings present higher quality index, stomatal conductance, intrinsic carboxylation efficiency and transpiration when cultivated under 70% shading in recovery. The stressful effect of water restriction was mitigated by the shading of 70%, where the seedlings were able to recover, resuming their photosynthetic metabolism and quality after resumption of irrigation. In addition, 0% shading is not indicated for this species.

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Photosynthetic metabolism and antioxidant in Ormosia arborea are modulated by abscisic acid under water deficit?

Cited by 5 publications

References 17 publications

Regulated deficit irrigation: an effective way to solve the shortage of agricultural water for horticulture

Regulated deficit irrigation: an effective way to solve the shortage of agricultural water for horticulture

Tolerance of Ormosia arborea (Fabaceae) seed to water submersion

Does shading mitigate water restriction in Ormosia arborea seedlings?

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