A Survey of Anther Glands in the Mimosoid Legume Tribes Parkieae and Mimoseae

Luckow, Melissa; Grimes, James W.

doi:10.2307/2446002

Cited by 32 publications

(33 citation statements)

References 14 publications

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“…But there is no evidence that these structures are glandular. In contrast to this, anther glands are frequently found in Mimosoideae, where a broad range of structures has been described (Luckow and Grimes, 1997;Barros and Teixeira, 2016). The gland-like outgrowths found in Goniorrhachis resemble the Prosopis africana type sensu Barros and Teixeira (2016), which occurs in P. africana only (and which does not occur in the other members of this genus, in which the anther gland is stalked).…”

Section: The Androecium In Goniorrhachismentioning

confidence: 97%

“…and in Papilionoideae. Anther glands in the caesalpinioid Burkea are described as relatively simple in comparison with Mimosoideae Grimes, 1997), andTucker (1996) shows tufts of hairs on the connective tip in the papilionoid Indigofera incarnata and narrow and attenuate connective tips in Indigofera hirsuta. But there is no evidence that these structures are glandular.…”

Section: The Androecium In Goniorrhachismentioning

confidence: 99%

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Flower development ofGoniorrhachis marginatareveals new insights into the evolution of the florally diverse detarioid legumes

Prenner

Cardoso

2016

Ann Bot

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Background and Aims The study of floral morphology and ontogeny and the re-investigation of existing data help to uncover potential synapomorphic characters and foster our understanding of phylogenetic relationships that rely primarily on molecular analyses. Goniorrhachis marginata is a monotypic caesalpinioid legume (Leguminosae) that shows some interesting floral features, such as a long hypanthium and regular Rosaceae-like flowers. We studied the ontogeny and morphology of the flowers in detail and present our results in a broad phylogenetic context.Methods Flower buds were collected in the field, fixed in 70 % ethanol and investigated using scanning electron microscopy. Older buds in spirit were carefully opened to investigate the direction of style bending. Characters of the style from 131 taxa from the main legume lineages were analysed and mapped on a Bayesian molecular phylogeny.Key Results The tetramerous calyx is the result of complete loss of one sepal. The formation of the radially symmetrical corolla starts in a typical caesalpinioid pattern with the adaxial petal innermost (ascending aestivation). The young style bends in the abaxial direction, which is a character found exclusively in all studied detarioid legumes and therefore a newly described synapomorphy for the clade.Conclusions We show that investigation of unstudied taxa and reinvestigation of published data can uncover new, previously overlooked and important characters. Curvature of the style can be detected in young buds with a hand lens and therefore is an important character for field botanists. Our study reveals the importance of including poorly studied and/or phylogenetically enigmatic taxa in molecular phylogenies and in detailed morphological and ontogenetic analyses.

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Section: The Androecium In Goniorrhachismentioning

confidence: 97%

Section: The Androecium In Goniorrhachismentioning

confidence: 99%

Flower development ofGoniorrhachis marginatareveals new insights into the evolution of the florally diverse detarioid legumes

Prenner

Cardoso

2016

Ann Bot

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“…Parkia multijuga e Stryphnodendron adstringens pertencem à tribo Mimoseae, uma das mais ricas em gêneros (40) e espécies (cerca de 870) da família (Lewis et al 2005), conhecida pela presença de glândulas localizadas no ápice das anteras da maioria dos seus representantes (Chaudry & Vijayaraghavan 1992;Luckow & Grimes 1997). Glândulas nas anteras de Mimosoideae são extensões do conectivo que possui função secretora (Chaudry & Vijayaraghavan 1992) e ocupam posição de destaque na taxonomia da subfamília (Luckow & Grimes 1997).…”

Section: -Estruturas Secretoras Floraisunclassified

“…Glândulas nas anteras de Mimosoideae são extensões do conectivo que possui função secretora (Chaudry & Vijayaraghavan 1992) e ocupam posição de destaque na taxonomia da subfamília (Luckow & Grimes 1997). P. multijuga e S.…”

Section: -Estruturas Secretoras Floraisunclassified

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Desenvolvimento floral de Parkia multijuga e Stryphnodendron adstringens, espécies andromonoicas de Leguminosae (Mimosoideae)

Pedersoli¹

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Flowers and flower buds of various sizes were collected and processed for observations in scanning electron microscopy (SEM) and light microscopy (LM). The development of floral organs begins with the emergence of five sepal primordia in the floral meristem from the abaxial side (P. multijuga) and from the adaxial side (S.adstringens) in which in some buds, a sixth primordia arises late; five petal primordia simultaneously in P. multijuga and bidirectionally in S. adstringens, a carpel primordium emergence concomitantly to five antesepalous stamens primordia in P. multijuga, and after the petal formation in S. adstringens, and five antepetalous stamen primordium. In the final stages of the development, the stamens initiated in two whorls, one outer (antesepalous) and the other innermost (antepetalous), are arranged in a single whorl. However, the antesepalous stamens, which emerged first, are a little more elongated than the antepetalous ones. In P. multijuga the fillets join in the base while its elongation, forming a tube, which thereafter becomes adnate to the petals. In hermaphrodite flowers, in both species, the carpel primordium emerges, stretches, the carpel cleft closes and, soon after, the style begins its differentiation. In staminate flowers, the carpel primordium begins and stretches, but the carpel cleft does not close and the carpel does not end its development. In the mature stage, the hermaphrodite flowers present fully differentiated stigmas, while in the staminate flowers, the carpel primordium remains as a rudiment at the base of the bud. In this case, there is no initiation of any ovule. We conclude that staminate flowers in both species arise by carpel abortion and not from inception, alike the other members of Mimosoideae.

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