EFFECT OF GIBBERELLIN ON GROWTH AND DEVELOPMENT OF Spondias tuberosa SEEDLINGS

Matos, Fábio Santos; Freitas, Igor Alberto Silvestre; Pereira, Victor Luiz Gonçalves; Pires, Winy Kelly Lima

doi:10.1590/1983-21252020v33n427rc

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…The application of GA 3 promotes the expression of genes related to cell elongation, expansion, and division in tomato [4]. GA 3 application significantly promoted the elongation of the root, stem, and leaf cells of Spondias tuberosa plants [41]. Eriksson et al [42] indicated that elevated GA levels increase the number of internode cells in poplar (Populus) trees but do not affect the length of epidermal cells or pith cells.…”

Section: Discussionmentioning

confidence: 99%

Study on the Regulatory Effects of GA3 on Soybean Internode Elongation

Shan

Jin

Wang

et al. 2021

Plants

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Excessive plant height is an important factor that can lead to lodging, which is closely related to soybean yield. Gibberellins are widely used as plant growth regulators in agricultural production. Gibberellic acid (GA3), one of the most effective active gibberellins, has been used to regulate plant height and increase yields. The mechanism through which GA3 regulates internode elongation has been extensively investigated. In 2019 and 2020, we applied GA3 to the stems, leaves, and roots of two soybean cultivars, Heinong 48 (a high-stalk cultivar) and Henong 60 (a dwarf cultivar), and GA3 was also applied to plants whose apical meristem was removed or to girded plants to compare the internode length and stem GA3 content of soybean plants under different treatments. These results suggested that the application of GA3 to the stems, leaves, and roots of soybean increased the internode length and GA3 content in the stems. Application of GA3 decreased the proportion of the pith in the soybean stems and primary xylem while increasing the proportion of secondary xylem. The apical meristem is an important site of GA3 synthesis in soybean stems and is involved in the regulation of stem elongation. GA3 was shown to be transported acropetally through the xylem and laterally between the xylem and phloem in soybean stems. We conclude that the GA3 level in stems is an important factor affecting internode elongation.

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Section: Discussionmentioning

confidence: 99%

Study on the Regulatory Effects of GA3 on Soybean Internode Elongation

Shan

Jin

Wang

et al. 2021

Plants

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“…PGR act influencing the synthesis, transport, or degradation of hormones, and for that reason, they may disturb other physiological processes that are controlled by those hormones. Examples of side effect are the reduced height growth of barley (Hordeum vulgare) sprayed with trinexapac-ethyl for delaying flowering time (Kupke et al, 2022), the reduction of specific leaf weight of Spondias tuberosa seedlings treated with gibberellin for improved rooting (Matos et al, 2020), the reduced sensibility to defoliants and delayed maturity of cotton plants sprayed with mepiquat chloride for chemical pruning (Qi et al, 2022), and the depressed seed yield of soybean treated with paclobutrazol for reducing lodging (Pricinotto & Zucareli, 2014).…”

Section: /8mentioning

confidence: 99%

“…Trinexapac-ethyl, paclobutrazol, mepiquat chloride, and chlormequat chloride are PGR that inhibit the synthesis of gibberellins and are used aiming to restrict the height growth of plants and several other characteristics, such as the leaf color for ornamental purpose (Teixeira et al, 2022), the rate of lodging (Souza et al, 2022), tillering (Ervin & Koski, 1998), time for flowering (Kupke et al, 2022), time for seed maturation (Qi et al, 2022), and seed yield (Ferrari et al, 2022). Gibberellin, with the opposite effect, is the main hormone for the promotion of stem elongation, and it is also used for promoting seed germination and flowering of many species (Castro-Camba et al, 2022), to improve yield and quality of mung bean (Vigna radiata) (Islam et al, 2021), and to promote rooting and initial growth of Spondias tuberosa seedlings (Matos et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Plant growth regulators influence the height and biomass partition of castor plants

Severino,

Oliveira

2024

Rev. bras. eng. agríc. ambient.

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Castor (Ricinus communis) is a drought-resistant oilseed crop. This study evaluated five plant growth regulators (PGR) on their capacity to influence stem elongation of castor plants growing under shade and measured side effects on the biomass allocation among leaf, stem, and roots. The experiment had 220 castor plants of the cultivar AKB 02, on a completely randomized design and four replicates. The plants were kept under artificial shade and treated with 11 doses of PGR, applied in the first day after emergence. Eight plants were exposed to full sun radiation without PGR treatment. The plant height was measured daily, and the plants were harvested for weighing the final biomass. The data was subjected to multiple linear regression. The shade promoted stem elongation and reduced biomass accumulation in all compartments. The height growth was restricted by trinexapac-ethyl, mepiquat chloride, and chlormequat chloride. Gibberellin promoted stem elongation in addition to the shade effect. Paclobutrazol did not influence stem elongation, but it favored biomass accumulation and increased the stem density. Gibberellin promoted allocation to stem replacing leaf biomass; trinexapac-ethyl promoted root replacing stem and leaf biomass; mepiquat and chlormequat chloride promoted stem in detriment of leaf biomass. In conclusion, plant growth regulators may be effective to restrict height growth of castor plants, but they can also disturb the biomass allocation among root, stem, and leaves.

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“…Knowledge on their limitations and potentialities in the efficient use of water can promote better exploitation and expansion of this crop in regions with water deficit. Proper management of irrigation interval can favor water reserve in the soil to meet the water requirements of plants (SILVA et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Morphophysiology and water relations of Spondias rootstocks under different irrigation frequencies

Silva,

Soares,

Lima

et al. 2023

Rev. Caatinga

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The semi-arid region of northeastern Brazil is characterized by scarcity of water for irrigation purposes due to long periods of drought, compromising the development of species such as Spondias tuberosa L. and Spondias mombin L., which, despite being considered drought tolerant, can have their yield negatively affected by low water availability. The objective of this study was to evaluate the morphophysiology, quantum efficiency and water relations of S. tuberosa and S. mombin rootstocks under different irrigation intervals in the semi-arid region of Paraíba, Brazil. The experimental design was carried out in randomized blocks, in a 5 × 2 factorial scheme, referring to 5 irrigation intervals - INT (1, 2, 3, 4 and 5 days after each irrigation event) and two species of the genus Spondias - SPC (S. tuberosa and S. mombin) with four replicates and three plants per plot, totaling 120 plants. Irrigation management with a five-day irrigation interval reduced gas exchange and growth of rootstocks of the Spondias species. The quantum efficiency of photosystem II of Spondias rootstocks (S. tuberosa and S. mombin) was not compromised when the plants were irrigated every two and four days. Irrigation every three days in the early stages of development of Spondias species can be used with the lowest losses in gas exchange and growth of rootstocks.

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EFFECT OF GIBBERELLIN ON GROWTH AND DEVELOPMENT OF Spondias tuberosa SEEDLINGS

Cited by 8 publications

References 11 publications

Study on the Regulatory Effects of GA3 on Soybean Internode Elongation

Study on the Regulatory Effects of GA3 on Soybean Internode Elongation

Plant growth regulators influence the height and biomass partition of castor plants

Morphophysiology and water relations of Spondias rootstocks under different irrigation frequencies

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