Ecophysiological, anatomical and biochemical aspects of in vitro culture of zygotic Syagrus coronata embryos and of young plants under drought stress

Medeiros, Maria das Graças Freire de; Oliveira, Déborah Silva; Oliveira, Marciel T.; Willadino, Lília; Houllou, Laureen Michelle; Santos, Mariana

doi:10.1007/s00468-015-1202-7

Cited by 16 publications

(16 citation statements)

References 51 publications

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“…However, non-photochemical quenching in stressed plants increased at the beginning of the fifth day of water deficit. After four days of rehydration, all photochemical parameters displayed values similar to those of well-watered control plants (Medeiros et al 2015). This performance suggests that the photosynthetic machinery of S. coronata has robust protection mechanisms against drought damage.…”

Section: Resultsmentioning

confidence: 57%

“…The few ecophysiology studies conducted to investigate palms describe tolerant species to drought stress Gomes and Prado 2007;Suresh et al 2012;Medeiros et al 2015). There are many palm species with economic importance, such as Elaeis guineensis or oil palm (Suresh et al 2012), Cocos nucifera or coconut palm (Gomes and Prado 2007), Bactris gasipaes or peach palm and Acrocomia aculeata or macaw palm (Pires et al 2013), most of them found in tropical rain forests.…”

Section: Introductionmentioning

confidence: 99%

“…Under controlled conditions, this species exhibits robust photosynthetic drought tolerance (Medeiros et al 2015).…”

Section: Introductionmentioning

confidence: 99%

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Ecophysiological leaf traits of native and exotic palm tree species under semi-arid conditions

et al. 2016

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AbstrAct:The main goal of this study was to evaluate the performance of two palm species under semi-arid conditions during the rainy and dry periods: the semi-arid native Syagrus coronata and a native to tropical America, Acrocomia aculeata. The leaf water potential, gas exchange, leaf soluble sugars, starch, free amino acids, total soluble protein content and morphological traits were measured.The highest leaf water potential and CO 2 assimilation values in both species were achieved during the rainy period. In response to the low soil moisture content during the dry period, gas exchange when compared with values from rainy period. As evergreen plants, both species maintained intact leaf photosynthetic pigment contents during the rainy and dry periods. Other important traits for drought tolerance are larger adaxial surface hypoderm and cuticle found in both species with higher stomatal density on the abaxial leaf surface.When comparing the species, S. coronata exhibited lower sensitivity to low water availability, showing higher CO 2 assimilation and water use efficiency.

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Section: Resultsmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

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Ecophysiological leaf traits of native and exotic palm tree species under semi-arid conditions

et al. 2016

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“…Seed dormancy and its triggers can be investigated using zygotic embryo cultures Medeiros et al, 2015). In vitro zygotic embryo culture has been used as an alternative for swift propagation, and among other applications, the method has been used to investigate dormancy caused by embryo immaturity or by the presence of germination inhibitors in the endosperm, in order to study the nutritional and physiologic aspects of embryonic development (Anjun, 2014;Medeiros et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…In vitro zygotic embryo culture has been used as an alternative for swift propagation, and among other applications, the method has been used to investigate dormancy caused by embryo immaturity or by the presence of germination inhibitors in the endosperm, in order to study the nutritional and physiologic aspects of embryonic development (Anjun, 2014;Medeiros et al, 2015). Thus, palm embryo culture allows for the assessment of seed physiology, development, and germination (Ribeiro et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Embryonic dormancy in seeds of Bactris gasipaes Kunth (peach-palm)

Nazário

Ferreira

Borges³

2017

J. Seed Sci.

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-Bactris gasipaes is a domesticated palm whose fruits are of great importance for the Amazonian people and whose heart of palm is also receiving economic interest in other brazilian and Latin America regions. The aim of this study was verify embryonic dormancy and its correlation with first cataphyll emergence in B. gasipaes seeds collected from four plants at Manaus city and four others at Coari city, both in the Amazonas state, Brazil. After extraction and cleaning, some of the seeds (4 replications of 25 per plant) were sown in a seedbed with a sawdust and sand mixture as substrate, and embryos (4 replications of 10 per plant), after extraction, were inoculated into half strength Murashige and Skoog cultures. Were used 100 seeds and 40 embryo per treatment. Whole seed and embryo germination varied between the different source plants and locations, with the greatest difference observed for the emergence of first cataphyll from seeds in the seedbed. For the most part of variables, results of seed and embryo were positively associated, namely, as one went up the other also, and vice versa. These results suggesting that, at least in part, seed dormancy in Bactris gasipaes is associated with embryonic dormancy.Index terms: Arecaceae, embryo, emergence, germination. Dormência embrionária em sementes de Bactris gasipaes Kunth (pupunha)RESUMO -Bactris gasipaes é uma palmeira domesticada com frutos de grande importância para os povos da Amazônia cujo palmito tem tido interesse econômico em outras regiões brasileiras e América Latina. Este estudo objetivou verificar a dormência embrionária e sua correlação com a emergência do primeiro catáfilo em sementes de B. gasipaes coletadas de quatro plantas na cidade de Manaus e quatro na de Coari, Amazonas, Brasil. Após extração e lavagem, algumas das sementes (4 repetições de 25 por planta) foram semeadas em sementeira contendo uma mistura de serragem e areia como substrato, e os embriões (4 repetições de 10 por planta), após a extração, foram inoculados em meio de cultura Murashige e Skoog. Foram utilizadas 100 sementes e 40 embriões por tratamento. A germinação das sementes integrais bem como a germinação de embriões variaram entre as diferentes plantas e procedências, com maior diferença observada para o surgimento do primeiro catáfilo a partir de sementes inteiras. Para a maior parte das variáveis, os resultados foram positivamente associados entre sementes e embriões. Estes resultados sugerem que a dormência em sementes de B. gasipaes pode ser atribuída, ao menos em parte, à dormência embrionária.Termos para indexação: Arecaceae, embrião, emergência, germinação.

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Structural and histochemical changes during in vitro development of Acrocomia aculeata (Arecaceae) seedlings

Vieira

Mazzottini-dos-Santos

Ribeiro

et al. 2020

Plant Cell Tiss Organ Cult

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Ecophysiological, anatomical and biochemical aspects of in vitro culture of zygotic Syagrus coronata embryos and of young plants under drought stress

Cited by 16 publications

References 51 publications

Ecophysiological leaf traits of native and exotic palm tree species under semi-arid conditions

Ecophysiological leaf traits of native and exotic palm tree species under semi-arid conditions

Embryonic dormancy in seeds of Bactris gasipaes Kunth (peach-palm)

Structural and histochemical changes during in vitro development of Acrocomia aculeata (Arecaceae) seedlings

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