Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae)

Moço, Maria Cecília de Chiara; Mariath, Jorge Ernesto de Araújo

doi:10.1590/s0100-84042004000200004

Cited by 6 publications

(18 citation statements)

References 40 publications

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“…Similar features of synergids have been observed in Acacia mangium except that the synergid amyloplasts are rather rare (Owens and Sornsathapornkul 1999). The egg cell has a large vacuole located next to synergids; this is also similar to the egg cell of acacia (Owens and Sornsathapornkul 1999;Moco and Mariath 2004). Lilac's central cells have large vacuoles and their nuclei were located next to the cell walls.…”

Section: Resultsmentioning

confidence: 65%

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High temperatures applied at fall forcing disturb ovule development in Syringa vulgaris L. “Mme Florent Stepman”

Jędrzejuk

Łukaszewska

2008

Acta Physiol Plant

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Under natural conditions, Syringa vulgaris blooms in May but it may be forced to produce blooming panicles in autumn, winter and early spring. To break winter dormancy, plants require high temperatures, the range of which depends on the forcing date. Forcing in November requires exposure to temperatures of *37°C. Such an exposure may affect the development of both male and female flower organs. In this work we have followed the anatomical changes in the ovule development in buds collected from plants forced in autumn, and compared them to those in plants blooming under natural conditions in May. From the earliest identifiable stages, in flowers forced in November the ovule development was delayed relative to the normal development pattern. Ultimately, most of the ovules (83%) degenerated before the differentiation of the embryo sacs was completed. We believe that it is the high temperatures required during autumn forcing that affect the development of female gametophytes, leading to the formation of defective structures which often degenerate. This in turn may reduce the esthetic appeal of the inflorescences and reduce their commercial value.

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Section: Resultsmentioning

confidence: 65%

“…Lilac's central cells have large vacuoles and their nuclei were located next to the cell walls. Antipodes are visible for very short period, similarly to Fabaceae (Moco and Mariath 2004), and other Oleaceae (Johri et al 1992). In contrast, none of the observed ovules from flowers forced in November appeared alive (Fig.…”

Section: Resultsmentioning

confidence: 76%

High temperatures applied at fall forcing disturb ovule development in Syringa vulgaris L. “Mme Florent Stepman”

Jędrzejuk

Łukaszewska

2008

Acta Physiol Plant

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“…Nevertheless, the perisperm is maintained, and thus acquires great importance in the nutritive value of the amaranth seed. Finally, studies on micro and megagametogenesis in different species are an important prerequisite for developing robust hybrid seed production systems or attempting to alter reproduction (Moco & Marianth 2004, Salinas-Gamboa et al 2016, Bartoli et al 2017. The generation of information about reproductive development in Amaranthus species has biological and agronomic importance such as establishment of reproductive schedules, monitoring fertility problems and growth kinetics, which in turn may be the base for breeding programs and crop management.…”

Section: Discussionmentioning

confidence: 99%

Female gametogenesis and early seed development in Amaranthus hypochondriacus L.

et al. 2018

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Background. Attention to amaranth grains has increased in recent years due to the nutritional value of their seed proteins, which have high levels of the amino acid lysine. However, there is no detailed study describing the stages of seed development in Amaranthus hypochondriacus. Question. How are the developmental patterns of the female gametophyte and young seed in Amaranthus hypochondriacus? Species studied. Amaranthus hypochondriacus L 'Revancha' (Amaranthaceae). Study site and years of study. Plants were growth and collected from 2014 to 2016, in a greenhouse at Instituto Tecnológico de Celaya, Guanajuato, Mexico. Methods. Glomerules were collected before pollination and two weeks after anthesis. The ovules at different development stages were fixed and cleared and were analyzed by light microscopy. A clearing protocol was used to observe the developmental stages during female gametogenesis and embryogenesis. Results. We observed that the Amaranthus hypochondriacus ovule has a campylotropous form. The female gametophyte showed a Polygonum-type pattern of development. We were also able to identify all the stages from the megaspore mother cell to the cotyledon embryo stage. After meiosis, the micropylar megaspore differentiates into the functional megaspore. The embryo did not show symmetric divisions, although the final pattern is similar to that of in eudicotyledons. The suspensor showed additional longitudinal divisions, giving rise to a 2-rowed suspensor, while the endosperm showed a helobial development. Conclusions. These results will be used as baseline to identify morphological changes during seed development and to develop new strategies to improve seed quality or increase the yield. ResumenAntecedentes: La atención al grano de amaranto ha aumentado en los últimos años debido al valor nutricional de las proteínas de su semilla con altos niveles de lisina. Sin embargo, no existe un estudio detallado que describa las etapas tempranas del desarrollo de su semilla. Pregunta: ¿Cómo es el patrón de desarrollo del gametófito femenino y la semilla en Amaranthus hypochondriacus? Especie de estudio: Amaranthus hypochondriacus L 'Revancha' (Amaranthaceae). Sitio de estudio y fechas: Las plantas fueron cultivadas y se colectaron entre los años 2014 y 2016, en invernadero, en el Instituto Tecnológico de Celaya. Métodos: Los glomérulos se colectaron antes de fecundación y hasta dos semanas después de la antesis. Los óvulos se fijaron y aclararon en diferentes estados de desarrollo, se analizaron bajo microscopía de luz en campo claro. Mediante un protocolo de clareo se logró observar todas las etapas de desarrollo de la gametogénesis femenina y la embriogénesis. Resultados. Los óvulos de Amaranthus hypochondriacus son del tipo campilótropo. El gametófito femenino muestra un patrón de desarrollo del tipo Polygonum. Se identificaron todas las etapas de desarrollo desde la célula madre de la megáspora al estado embrionario cotiledonar. Después de la meiosis la megáspora micropilar se diferencia en la megáspora funcio...

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“…bc basal cell, cv central vacuole, enn endosperm nucleus, nu nucellus, pen primary endosperm nucleus, pp proembryo proper, sc suspensor cell, tc terminal cell, zn zygote nucleus. Bar 10 lm Sex Plant Reprod (2011) 24:219-229 225 Jensen 1965Torosian 1972;Schulz and Jensen 1973;Sehgal and Gifford 1979;Folsom and Peterson 1984;You and Jensen 1985;Yan et al 1991;Tobe 2001, 2003;Heo et al 2004;Moco and Mariath 2004;Lora et al 2010). It is not clear whether progamic nutrient allocation has evolved independently many times in these disparate angiosperms or whether it is common and has simply been overlooked by researchers.…”

Section: Progamic Starch Accumulationmentioning

confidence: 99%

Female gametophyte development and double fertilization in Balsas teosinte, Zea mays subsp. parviglumis (Poaceae)

Diggle

Friedman

2011

Sex Plant Reprod

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Over the course of maize evolution, domestication played a major role in the structural transition of the vegetative and reproductive characteristics that distinguish it from its closest wild relative, Zea mays subsp. parviglumis (Balsas teosinte). Little is known, however, about impacts of the domestication process on the cellular features of the female gametophyte and the subsequent reproductive events after fertilization, even though they are essential components of plant sexual reproduction. In this study, we investigated the developmental and cellular features of the Balsas teosinte female gametophyte and early developing seed in order to unravel the key structural and evolutionary transitions of the reproductive process associated with the domestication of the ancestor of maize. Our results show that the female gametophyte of Balsas teosinte is a variation of the Polygonum type with proliferative antipodal cells and is similar to that of maize. The fertilization process of Balsas teosinte also is basically similar to domesticated maize. In contrast to maize, many events associated with the development of the embryo and endosperm appear to be initiated earlier in Balsas teosinte. Our study suggests that the pattern of female gametophyte development with antipodal proliferation is common among species and subspecies of Zea and evolved before maize domestication. In addition, we propose that the relatively longer duration of the free nuclear endosperm phase in maize is correlated with the development of a larger fruit (kernel or caryopsis) and with a bigger endosperm compared with Balsas teosinte.

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Female gametophyte development in Adesmia latifolia (Spreng.) Vog. (Leguminosae - Papilionoideae)

Cited by 6 publications

References 40 publications

High temperatures applied at fall forcing disturb ovule development in Syringa vulgaris L. “Mme Florent Stepman”

High temperatures applied at fall forcing disturb ovule development in Syringa vulgaris L. “Mme Florent Stepman”

Female gametogenesis and early seed development in Amaranthus hypochondriacus L.

Female gametophyte development and double fertilization in Balsas teosinte, Zea mays subsp. parviglumis (Poaceae)

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