Heat transfer in the tank-inflorescence of Nidularium innocentii (Bromeliaceae): Experimental and finite element analysis based on X-ray microtomography

Nogueira, Fernanda Mayara; Palombini, Felipe Luis; Kuhn, Sofia Aumond; Oliveira, Branca Freitas de; Mariath, Jorge Ernesto de Araújo

doi:10.1016/j.micron.2019.102714

Cited by 11 publications

(3 citation statements)

References 49 publications

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“…The aggregation of (partial) inflorescences in some Bromeliaceae allows for flower enclosure by enlarged bracts. These serve as canisters for rainwater, which is necessary for heat transfer and proper floral development ( Nogueira et al , 2019 , 2021 ), but also create showy display for pollinators. Similar elongated bracts evolved in some Himalayan genera of Asteraceae, such as Cremanthodium Benth.…”

Section: Ecological Patterns In Pseudanthiamentioning

confidence: 99%

Pseudanthia in angiosperms: a review

Baczyński

Claßen‐Bockhoff

2023

Annals of Botany

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Background Pseudanthia or ‘false flowers’ are multiflowered units that resemble solitary flowers in form and function. Over the last century the term ‘pseudanthium’ has been applied to a wide array of morphologically divergent blossoms, ranging from those with easily noticeable florets to derived, reduced units in which individual flowers become almost indistinguishable. And although initially admired mostly by botanists, the diversity and widespread distribution of pseudanthia across angiosperms has already made them a fascinating topic for evolutionary and developmental comparative studies. Scope This review synthesizes historical and current concepts on the biology of pseudanthia. Our first aim is to establish a clear, operational definition of pseudanthium and disentangle common terminological misconceptions surrounding that term. Our second aim is to summarize the knowledge of morphological and developmental diversity of pseudanthia and embed it within a modern phylogenetic framework. Lastly, we want to provide a comprehensive overview on the evolution and ecological importance of pseudanthia and outline perspectives for future studies. Conclusions The understanding of pseudanthia changed multiple times and reflects three different interpretations of their ‘flower-like’ qualities: developmental (similarity in structure), figural (similarity in form and function), and phylogenetic (homology between angiosperm flowers and monoecious reproductive shoots in gymnosperms). Here, we propose to narrow the term pseudanthium to multiflowered blossoms resembling zoophilous flowers in form, i.e., in being structurally subdivided in a showy periphery and a reproductive center. According to this definition, pseudanthia sensu stricto. evolved independently in at least 40 angiosperm families. The recurrent acquisition of pseudanthia sensu stricto in all major lineages of flowering plants indicates repeated interactions between developmental constraints (smallness of flowers, meristematic conditions) and selective pressures, such as demands of pollinators and/or environmental conditions.

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Section: Ecological Patterns In Pseudanthiamentioning

confidence: 99%

Pseudanthia in angiosperms: a review

Baczyński

Claßen‐Bockhoff

2023

Annals of Botany

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“…Forell et al (2015) virtually analyzed multiple breeding strategies to modify the stalk characteristics of maize (Zea mays -Poaceae), using a µCT-derived model in an FEA, to prevent lodging and increase crop yielding. Nogueira et al (2019) studied the thermal role of the inflorescence-tank of a bromeliad specimen (N. innocentii) by using literature's first µCT-based, heat transfer FEA of a biological sample. Authors simulated one day of a heating and cooling environment in the plant, with and without the presence of water inside the inflorescence.…”

Section: From Light Microscopy To X-ray Microtomography In Botanymentioning

confidence: 99%

From light microscopy to X-ray microtomography: observation and analysis technologies in transdisciplinary approaches for bionic design and botany

Palombini¹,

Cidade²,

Oliveira³

et al. 2021

Cuadernos

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Los logros recientes en diseños bioinspirados siguen de cerca los crecientes avances en las tecnologías de observación que son esenciales para comprender una estructura o sistema biológico y adaptarlos correctamente en un proyecto. Asimismo, diferentes áreas de disciplinas clásicas, como las ciencias vegetales, incluso se están reescribiendo gracias al avance de las nuevas tecnologías. Este artículo aborda el impacto que tiene el uso de tecnologías de observación en el desarrollo de la investigación botánica de vanguardia, así como sus aplicaciones en diseños biónicos. Desde microscopía óptica (LM) hasta microtomografía de rayos X (µCT), presentamos ejemplos de cómo múltiples tecnologías están contribuyendo a innovaciones y descubrimientos más recientes en morfología y anatomía de plantas, respondiendo preguntas importantes sobre estructura / función. Se discute la evolución de las tecnologías de observación, mostrando cómo están impactando la comprensión de múltiples características de las plantas y su consiguiente adaptación y uso en proyectos bioinspirados mediante ejemplos. Esencialmente, el enfoque transdisciplinario de conectar profesionales de múltiples campos se considera fundamental para el progreso obtenido tanto en biónica como en botánica. Al incluir nuevas tecnologías de observación en su flujo de trabajo de investigación, los diseñadores y botánicos podrían beneficiarse de diferentes perspectivas en la investigación y aplicación de sus hallazgos.

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“…Accordingly, strategies to cope with water-related stresses have been discussed profusely in terrestrial plants, both on physiological and structural grounds ( Aroca 2012 ). In Bromeliaceae, the biology of adaptations related to water-use strategies is extremely diverse, including not only leaf impounding tanks but also the mesophyll structure, photosynthetic pathways and trichomes ( Benzing 2000 ; Males 2016 ; Nogueira et al . 2019 , 2021 ).…”

Section: Introductionmentioning

confidence: 99%

An overview of secretion in floral bracts of Tillandsioideae (Bromeliaceae), with emphasis on the secretory scales

Ballego-Campos,

Forzza,

Paiva

2023

AoB PLANTS

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Bromeliaceae display many water-use strategies, from leaf impounding tanks to CAM photosynthesis and absorbing trichomes. Recent studies show that trichomes in inflorescences of bromeliads can exude viscous secretions, protecting against various stresses, including excessive water loss. In light of this, and considering the knowledge gap regarding inflorescence trichomes in bromeliads, we aimed to investigate the presence, source, and chemical nature of inflorescence secretions in species of the Tillandsioideae (Bromeliaceae) and to describe the anatomy of their floral bracts focusing on trichome structure and position.We conducted a prospection of secretory activity and anatomy in floral bracts in 52 species of Tillandsioideae and one early-divergent Bromeliaceae species. We used histochemical tests to investigate the presence and nature of secretion combined with standard light microscopy methods. Secretion appears in all studied species of tribe Vrieseeae, in Guzmania species, Wallisia cyanea, Tillandsia streptopylla (Tillandsieae), and Catopsis morreniana (Catopsideae). It is absent in Vriesea guttata (Vrieseeae), Racinaea crispa, and various Tillandsia species (Tillandsieae). Secretion is produced by peltate trichomes on the adaxial surface of young bracts and comprises hydrophilic and lipophilic substances. Bract anatomy revealed an internal mucilage-secreting tissue with wide distribution within subtribe Vrieseinae. Our results point to a broad occurrence of secretion associated with bracteal scales in inflorescences of Tillandsioideae. Secretory function is strongly related to trichomes of the adaxial surface, whereas the indumentum of the abaxial side is lacking or likely associated with water absorption; the latter case is especially related to small, xeric plants. Exudates might engage in colleter-like roles, protecting against desiccation, high-radiation, and herbivores. Directions for future research are presented.

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Heat transfer in the tank-inflorescence of Nidularium innocentii (Bromeliaceae): Experimental and finite element analysis based on X-ray microtomography

Cited by 11 publications

References 49 publications

Pseudanthia in angiosperms: a review

Pseudanthia in angiosperms: a review

From light microscopy to X-ray microtomography: observation and analysis technologies in transdisciplinary approaches for bionic design and botany

An overview of secretion in floral bracts of Tillandsioideae (Bromeliaceae), with emphasis on the secretory scales

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