Mobilização de reservas em sementes de Apuleia leiocarpa (Vogel) J.F. Macbr. (garapa) durante a embebição

Pontes, Cláudia Aparecida; Borges, Eduardo Euclydes de Lima e; Borges, R. de C. G.; Soares, Carlos Pedro Boëchat

doi:10.1590/s0100-67622002000500010

Cited by 21 publications

(26 citation statements)

References 9 publications

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“…Breakdown of seed oil reserves is known to occur after radicle emergence, being converted in starch or soluble sugars, which become the primary nutrient source during heterotrophic growth (NYKIFORUK and JOHNSON-FLANAGAN, 1999;PONTES et al, 2002;RODRIGUES et al, 2005). During rosewood seed germination, it was observed a decrease in the oil content of 40% between the first stage (0 cm) and the last stage of radicle emergence analyzed (5-7 cm) (Figure 2A).…”

Section: Resultsmentioning

confidence: 99%

“…Silva et al (1998) observed a protein level increase in the beginning of Dalbergia miscolobium seed imbibition. In Apuleia leiocarpa, protein contents increased with prolonged times of seed imbibition (PONTES et al, 2002). However, in seeds of Qualea grandiflora protein levels were constant during nine weeks of seed germination (PAULILO and FELIPPE, 1994).…”

Section: Resultsmentioning

confidence: 99%

“…In Senna macranthera seeds, starch content decreased within 72 hours (LIMA et al, 2002). According to Pontes et al (2002), levels of starch and soluble sugar mobilization are dependent on the plant species considered, being more expressive during the early or late stages of seed germination. Soluble sugar levels must be closely regulated in germinating seeds to ensure an adequate supply of energy and building materials for the developing seedling .…”

Section: Resultsmentioning

confidence: 99%

“…During germination, these reserves are hydrolyzed and mobilized by the embryo (KIDSON and WESTBOY, 2000;PONTES et al, 2002). The mobilization of storage food reserves is associated with seedling growth (BREDEMEIER et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Over the past decades, intensive harvest and high demand for the oil have threatened with extinction the remaining rosewood trees . Despite its economic importance, almost no information is available on seed germination of this tropical forest species and on thebiochemical routes involved in this process (PONTES et al, 2002;GONÇALVES et al, 2002). This investigation can help us to understand the biochemical aspects of rosewood seed germination that can be used to predict seed vigor.…”

Section: Introductionmentioning

confidence: 99%

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Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

et al. 2008

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-This study aimed to characterize protein, oil, starch and soluble sugar mobilization as well as the activity of α-amylase during rosewood seed germination. Germination test was carried out at 25°C and the following parameters were analyzed: percentage of germination, initial, average, and final germination time. Seed reserve quantification was monitored in quiescent seeds and during different stages of radicle growth. Starch mobilization was studied in function of α-amylase activity. Germination reached 87.5% at the initial, average, and final time of 16, 21 and 30 days, respectively. Oil mobilization showed a negative linear behavior, decreasing 40% between the first and the last stage analyzed, whereas protein levels increased 34.7% during the initial period of germination. Starch content (46.4%) was the highest among those of the metabolites analyzed and starch mobilization occurred inversely to the observed for soluble sugars; α-amylase activity increased until the 15 th day, a period before radicle emission and corresponding to the highest starch mobilization. The high percentage of rosewood seed germination may be related to the controlled condition used in the germination chamber as well as to high seed reserve mobilization, in special oil and starch.Keywords: α-amylase, carbohydrates and oil. MOBILIZAÇÃO DE METABÓLITOS PRIMÁRIOS DURANTE A GERMINAÇÃO DE SEMENTES DE PAU-ROSA (Aniba rosaeodora Ducke)

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

et al. 2008

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Antioxidant enzyme activity and dynamics of reserve mobilization during germination and early seedling establishment of royal poinciana [Delonix regia (Bojer ex Hook.) Raf.]

Barbosa

Zuchi

Souza

et al. 2022

Trees

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Plant growth regulators and mobilization of reserves in imbibition phases of yellow passion fruit

Manhone,

Lopes,

Alexandre

et al. 2024

Braz. J. Biol.

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The production of seedlings of the passion fruit tree, usually, is sexual, and the seeds are not uniform in the seedling emergence, and soaking treatments of seeds can provide faster and more uniform germination. It was aimed to study the action of plant growth regulators and the mobilization of reserves in the stages of soaking of yellow passion fruit seeds. The seeds were soaked for five hours in solutions containing plant growth regulators, in a completely randomized design, in a factorial 8 x 4, with four replications. The first factor corresponds to eight plant growth regulators: T1 - distilled water (control); T2 - 6-benzylaminepurine 500 mg L-1; T3 - 4-(3-indolyl) butyric acid 500 mg L-1; T4 - gibberellic acid 500 mg L-1; T5 - spermine 250 mg L-1; T6 - spermine 750 mg L-1; T7 - spermidine 750 mg L-1; T8 - spermidine 1250 mg L-1; and the second factor, to the four soaking times: zero, four, 72 and 120 hours, corresponding, respectively, to the dry seed, and to phases I, II, and III of the imbibition curve. It was evaluated the biochemical composition of seeds (lipids, soluble sugars and starch). The seeds showed accumulation of lipids in phase III; the content of soluble sugars increased in phase I and decreased in phase II. The starch content increased until the phase II and decreased in phase III. Starch is the main reserve in the seeds and the main source of energy used in phase III; soaking the seeds in polyamines generates an accumulation of lipids in the seeds and soaking in plant growth regulators increases the burning of starch.

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Mobilização de reservas em sementes de Apuleia leiocarpa (Vogel) J.F. Macbr. (garapa) durante a embebição

Cited by 21 publications

References 9 publications

Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

Antioxidant enzyme activity and dynamics of reserve mobilization during germination and early seedling establishment of royal poinciana [Delonix regia (Bojer ex Hook.) Raf.]

Plant growth regulators and mobilization of reserves in imbibition phases of yellow passion fruit

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