Morfologia e ontogenese do pericarpo e da semente de Eugenia punicifolia (H. B. &amp; K.) DC., Myrcia bella Camb. e Campomanesia pubescens (DC.) Berg (Myrtaceae)

Moreira-Coneglian, Inara Regiane; Carmello-Guerreiro, Sandra Maria

doi:10.47749/t/unicamp.2007.415603

Cited by 4 publications

(13 citation statements)

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“…Two to three layers arose on more than one linage independently within Eugenia . The presence of two layers in the inner integument found in most species of subtribe Eugeniinae in this study showed 93.11% probability to be the ancestral state in Eugeniinae, and it was described for Myrteae by Van Wyk and Botha (1984) , Moreira-Coneglian (2007 , 2011) , Pescador et al (2009) , and Machado (2014) , for Myrtaceae by Corner (1976) , and for Myrtales by Tobe and Raven (1983) and Endress (2010) . The proliferative inner integument in E. pyriformis , discernable until the mature seed, is a new record for the family.…”

Section: Discussionsupporting

confidence: 56%

“…Some of the development studies of Myrteae cited above confirmed that the few Eugenia species described have a bitegmic ovule ( Van Wyk and Botha, 1984 ; Moreira-Coneglian, 2007 , 2011 ; Pimentel, 2010 ; Machado, 2014 ; Pimentel et al, 2014 ), but a unitegmic ovule was described for E . uniflora L. ( Lopes, 2008 ).…”

Section: Introductionmentioning

confidence: 89%

“…The structure of seeds in Myrtaceae has been taxonomically important since the first classifications of the family ( Berg , 1855-1856 , 1857 , 1858 , 1859 ; Petit, 1908 ; Gauba and Pryor, 1958 ; McVaugh, 1968 ). In addition, the few studies of seed development have revealed that there is a great variation in the seed-coat structure and type of embryo in Myrteae and members of Eugenia ( Corner, 1976 ; Van Wyk and Botha, 1984 ; Moreira-Coneglian, 2007 , 2011 ; Lopes, 2008 ; Machado, 2014 ). These studies point to some traits in seed ontogenesis that may show evolutionary trends and be promising diagnostic traits in Myrteae: the ovule types, the variation in the number of integuments and the layers of cells that constitute them; the presence of an obturator; the curvature of the seed; the presence of a pachychalaza or perichalaza; a multiplicative testa; and the presence and position of lignified cells at the end of seed-coat development.…”

Section: Introductionmentioning

confidence: 99%

“…Berg., Psidium L., Myrcia Sol. ex Lindl., Campomanesia Ruiz and Pav., Eugenia ( Petit, 1908 ; Corner, 1976 ; Van Wyk and Botha, 1984 ; Ciccarelli et al, 2005 ; Moreira-Coneglian, 2007 , 2011 ; Machado, 2014 ) species having berry-like fruits or like so show that the testa in these genera comprises one or more layers of thick-walled, lignified vs. non-lignified cells. Thus, if Corner’s (1976) hypothesis is correct, simplification occurred in species with dehiscent and indehiscent fruits.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, if Corner’s (1976) hypothesis is correct, simplification occurred in species with dehiscent and indehiscent fruits. In the Eugenia species described by Van Wyk and Botha (1984) and Moreira-Coneglian (2011) , the testa has varying degrees of sclerification (only exotesta or the whole testa).…”

Section: Introductionmentioning

confidence: 99%

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The anatomy of the seed-coat includes diagnostic characters in the subtribe Eugeniinae (Myrteae, Myrtaceae)

Sbais

Machado²,

Valdemarin³

et al. 2022

Front. Plant Sci.

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The subtribe Eugeniinae comprises of two genera, Eugenia (ca. 1,100 species) and Myrcianthes (ca. 40 species). Eugenia is the largest genus of neotropical Myrtaceae and its latest classification proposes 11 sections. This study describes the seed anatomy of forty-one species of Eugeniinae in order to provide possible diagnostic characteristics. Following standard anatomical techniques, flower buds, flowers, and fruits were processed and analyzed using microtome sections and light microscopy. The phylogeny used the regions ITS, rpl16, psbA-trnH, trnL-rpl32, and trnQ-rps16, following recent studies in the group. Ancestral character reconstruction uncovered that: (1) the ancestral ovule in Eugeniinae was campylotropous (98.9% probability), bitegmic (98.5% probability), and unitegmic ovules arose on more than one lineage independently within Eugenia; (2) the pachychalazal seed-coat appeared with a 92% probability of being the ancestral type; (3) non-lignified seed-coat (24,5% probability) and aerenchymatous mesotesta (45.8% probability) are diagnostic characters in Myrcianthes pungens (aerenchymatous mesotesta present in the developing seed-coat) and in the species of E. sect. Pseudeugenia until the species of E. sect. Schizocalomyrtus and it is the type of seed-coat that predominates in most basal sections on the tree; (4) the partial sclerification (only in the exotesta—exotestal seed-coat) is mainly observed in species of E. sect. Excelsae, E. sect. Jossinia (group X), and E. sect. Racemosae (22.2% probability); (5) and in the species of the recent lineages of Eugenia, with a probability of 27.2%, predominate the exomesotestal or testal construction of the seed-coat [character observed in almost all species analyzed of E. sect. Jossinia (group Y) and E. sect. Umbellatae]. A dehiscent fruit is considered as a plesiomorphic state in Myrtaceae; the ancestor of this family had seeds with a completely sclerified testa, and the other testa types described for the current species with dehiscent and indehiscent fruits are simplified versions of this ancestral type. Perhaps, this means that the sclerified layers in the seed-coat have remained in whole or in part as a plesiomorphic condition for taxa with a capsule and bacca. Maintaining the plesiomorphic condition may have represented a selective advantage at some point in the evolutionary history of the family and its groups.

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Section: Discussionsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The anatomy of the seed-coat includes diagnostic characters in the subtribe Eugeniinae (Myrteae, Myrtaceae)

Sbais

Machado²,

Valdemarin³

et al. 2022

Front. Plant Sci.

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Seed anatomy and histochemistry of Myrciaria dubia (Kunth) McVaugh, an Amazonian Myrtaceace

Ribeiro

Nascimento

Cruz

et al. 2021

Flora

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A survey of ontogeny pericarp features as contribution to the infratribal characterization of Myrteae (Myrtaceae)

Galan

Martos

Machado

et al. 2016

Nordic Journal of Botany

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With the aim of correlating the pericarp structure with current phylogenies of Myrteae, this study describes the ontogeny in five species included in five out of the six South American clades of the tribe. In these taxa, the outer and inner ovarian epidermis gives rise to the exocarp and the endocarp, respectively, both with 1 layer. In the mesocarp, derived from the ovarian mesophyll, secretory cavities are arranged into a circle just below the exocarp and near the endocarp in Campomanesia adamantium; only below the exocarp in Eugenia pitanga and Myrcia multiflora; more internally in Myrciaria cuspidata, and below the exocarp and throughout the mesophyll in Myrceugenia alpigena. The promising traits for phylogenetic studies in the group include: direction of elongation of pericarp layers, regions that develop most in relation to the circle of larger vascular bundles, differentiation of spongy and sclerenchymatous tissues and position of secretory cavities.

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Morfologia e ontogenese do pericarpo e da semente de Eugenia punicifolia (H. B. & K.) DC., Myrcia bella Camb. e Campomanesia pubescens (DC.) Berg (Myrtaceae)

Cited by 4 publications

References 0 publications

The anatomy of the seed-coat includes diagnostic characters in the subtribe Eugeniinae (Myrteae, Myrtaceae)

The anatomy of the seed-coat includes diagnostic characters in the subtribe Eugeniinae (Myrteae, Myrtaceae)

Seed anatomy and histochemistry of Myrciaria dubia (Kunth) McVaugh, an Amazonian Myrtaceace

A survey of ontogeny pericarp features as contribution to the infratribal characterization of Myrteae (Myrtaceae)

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