Floral vasculature and ontogeny in <i>Canna indica</i>

Miao, Ming-Zhi; Liu, Huanfang; Kuang, Yuanwen; Zou, Pu; Liao, Jingping

doi:10.1111/j.1756-1051.2013.00311.x

Cited by 13 publications

(17 citation statements)

References 19 publications

(25 reference statements)

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“…Within the androecial whorl, the only fertile stamen comprises a one-theca anther and a petaloid appendage, while the other members are all petaloid staminodes, including a labellum (Figures 1B,C ). Floral organogenesis of C. indica has been previously reported (Kirchoff, 1983 ; Almeida et al, 2013 ; Miao et al, 2014 ). Partially, due to the differentiation of the androecium, the flower development process of C. indica is quite complicated.…”

Section: Resultsmentioning

confidence: 85%

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Temporal-Spatial Transcriptome Analyses Provide Insights into the Development of Petaloid Androecium in Canna indica

Tian

Liu

et al. 2016

Front. Plant Sci.

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Canna indica (Zingiberales) is one of the most important ornamental species characterized with beautiful petaloid staminodes, which are considered to evolve from stamens. However, the genetic basis for the development of petaloid staminodes remains unclear largely because the genomic sequences are not available. By using RNA-Seq, we sequenced the transcripts in the flower of C. indica, and quantified the temporal gene expressions in flower primordium and differentiated flower, as well as the spatial gene expressions in petal and petaloid staminode. In total, 118,869 unigenes were assembled, among which 67,299 unigenes were annotated. Quantification analysis identified the differentially expressed genes in the temporal and spatial two comparisons, based on which, Gene Ontology enrichment analysis highlighted the representative terms in each sample, such as specification of organ number in flower primordium, growth in differentiated flower, secondary cell wall biogenesis in petal and cell division in petaloid staminode. Among the 51 analyzed MADS-box unigenes, 37 were up-regulated in differentiated flower compared with those in flower primordium. A-class unigenes were expressed higher in petal than in petaloid staminode, and C-class unigenes were expressed oppositely, whereas B-class unigenes demonstrated close expression levels in these two organs, indicating that petaloid staminode retains stamen identity to some degree. In situ hybridization provided more detailed expression patterns of these unigenes, and revealed the extended expression of B-class to the carpel at later stages when the style turned flat. These results constitute a preliminary basis for the study of flower development in C. indica and can be applied in further study of the evolution of Zingiberales.

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Section: Resultsmentioning

confidence: 85%

“…In the flower of C. indica , the fertile stamen consists of a one-theca anther and a petaloid appendage, while the other androecial members are all completely petaloid structures (Kirchoff, 1983 ; Miao et al, 2014 ). As implied by the name, petaloid staminodes are thought to have evolved from stamens.…”

Section: Introductionmentioning

confidence: 99%

Temporal-Spatial Transcriptome Analyses Provide Insights into the Development of Petaloid Androecium in Canna indica

Tian

Liu

et al. 2016

Front. Plant Sci.

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“…For many years, the interpretation of the androecium members of the Cannaceae has sparked much debate, especially regarding the developmental origins of the stamen and the labellum in Canna indica (see the brief review by Miao et al 2014). In recent years, this scientific problem has been the subject of both morphological observations and molecular studies.…”

Section: Introductionmentioning

confidence: 99%

Molecular basis of floral petaloidy: insights from androecia of Canna indica

Liu

Almeida

et al. 2014

AoB PLANTS

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Floral organs usually take on the characteristics of petals in ginger plants. In Canna indica, the most ornamental parts of the flowers are considered to be staminode, which means rudimentary and sterile stamen. However, the precise nature of these petaloid organs is yet to be determined. Two floral organ identity genes GLOBOSA (GLO) and AGAMOUS (AG) are isolated from Canna indica. Their expression patterns suggest that petaloid staminodes and labellum are of androecium identity, in agreement with their position within the flower. But the current molecular, morphological and anatomical data, are still not sufficient to explain the distinct morphology observed in staminodes and fertile stamen in Canna indica.

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“…Abnormality may occur by interspecific hybridization, tissue culture, chemical treatment, radiation exposure, parasitism and climatic change during acclimatization. The outer staminodes initiate and usually abort during early development in Canna species (Miao et al, 2014). In Alpinia calcarata, abnormal flowersshowed two stamens, a median sterile appendage and a single gland in the postero-lateral positions.…”

Section: Discussionmentioning

confidence: 99%

Can the anatomy of abnormal flowers elucidate relationships of the androecial members in the ginger (Zingiberaceae)?

Fan

Zou

et al. 2019

Preprint

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Background Interpretation of the floral structure of Zingiberaceae has long concentrated on the relationships of the androecial members. It has been suggested that the labellum is composed of two structures rather than three or five, and the glands are not only the epidermis of the ovary but are similar to nectaries. Results Serial sections were used to observe the vasculature of normal and two-staminate flowers in Alpinia intermedia ‘shengzhen’. Floral diagrams were drawn to interpret the morphological category of the floral organs and the relationships of the androecial members. Androecial vascular bundles were associated with carpellary dorsal bundles (CDBs) and parietal bundles (PBs) in a Zingiberales phylogeny setting using ancestral state reconstruction. Anatomical observations demonstrate that the fertile stamen(s) incorporate parietal strands both in normal and two-staminate flowers. The three appendages represent the three members of the outer whorl of the androecium while the labellum represents the inner whorl of the androecium in the two-staminate flower. Reconstruction of the origin of the vascular system in the androecium suggests that the outer whorl of androecium receives its vascular supply from the CDBs and the inner whorl of androecium receives from the PBs in both the basal banana group and the more derived ginger clade. Conclusions The present study adds to a growing body of literature suggesting that anatomy of abnormal flowers may not provide enough evidence for elucidating the relationships of the androecial members. Abnormal flowers are diverse in the Zingiberaceae and may derive from different types of mutations.

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Floral vasculature and ontogeny in Canna indica

Cited by 13 publications

References 19 publications

Temporal-Spatial Transcriptome Analyses Provide Insights into the Development of Petaloid Androecium in Canna indica

Temporal-Spatial Transcriptome Analyses Provide Insights into the Development of Petaloid Androecium in Canna indica

Molecular basis of floral petaloidy: insights from androecia of Canna indica

Can the anatomy of abnormal flowers elucidate relationships of the androecial members in the ginger (Zingiberaceae)?

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