Evolution: Cleistogamy to the rescue of zygomorphic flowers

Sauquet, Hervé

doi:10.1016/j.cub.2021.01.054

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…Cleistogamy flower is never fully mature and considered to have evolved to encourage self-fertilization. Current research disclosed that cleistogamy occurred more frequently in zygomorphy or bilateral symmetry flowers (Sauquet 2021). It was also argued that cleistogamy was an adaptive response to pollen pollination and acted as reproductive assurance (Albert et al 2011).…”

Section: Resultsmentioning

confidence: 99%

Sex-linked Single Nucleotide Polymorphism (SNP) identification and molecular marker development of salacca (Salacca zalacca (Gaertn.) Voss)

PRIHATINI

DINARTI²,

SUTANTO³

et al. 2023

Biodiversitas

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Abstract. Prihatini R, Dinarti D, Sutanto A, Sudarsono. 2023. Sex-linked Single Nucleotide Polymorphism (SNP) identification and molecular marker development of salacca (Salacca zalacca (Gaertn.) Voss). Biodiversitas 24: 704-712. Salacca zalacca (Gaertn.) Voss is a native tropical fruit species of Indonesia with three different sex types, i.e., female, male, and hermaphrodite. Early sex identification plays a vital role in the dioecious plant development, cultivation, and breeding program. The morphological and histological markers cannot differentiate salacca sex types during vegetative stages, during which molecular approaches are offered. Isolation of salacca's partial Transducin Beta Like-3 (TBL3) gene was done using Phoenix dactylifera L. TBL3-specific primers. After DNA sequencing and multiple sequence alignment, the putative TBL3 aligned data was used to construct a phylogenetic tree, find SNAP primers, and use the generated markers as predictors for sex-type phenotypes of salacca. Phylogenetic analysis showed that the dendrogram of aligned TBL3 partial sequences of salacca and other taxa showed that the salacca TBL3 is closely related to P. dactylifera and Elaeis guineensis Jacq. since the three palms belong to the same Arecaceae family. The partial sequence of the TBL3 gene of hermaphrodite salacca revealed ten single nucleotide polymorphisms (SNPs) compared to those of female and male plants. Protein alignment of the sequence also showed several differences, which may lead to different flower morphogenesis. The salacca SNAP sex-types markers were developed from one of the SNP sites and validated using samples from farmer plantations. The SNAP primer pairs of STBL1F-Ref - STBL1-Rev amplified a 300 bp fragment from hermaphrodite samples, whereas no band was amplified from the female and male samples. On the contrary, primers STBL1F-Alt - STBL1-Rev amplified a 300 bp fragment from female and male plants but not from the hermaphrodite plants. The salacca's TBL3 sequences and the SNAP markers are valuable tools for further salacca genomic exploration.

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Section: Resultsmentioning

confidence: 99%

Sex-linked Single Nucleotide Polymorphism (SNP) identification and molecular marker development of salacca (Salacca zalacca (Gaertn.) Voss)

PRIHATINI

DINARTI²,

SUTANTO³

et al. 2023

Biodiversitas

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show abstract

“…However, flowers also display strategies that facilitate autogamy in the absence of pollinators named mechanisms of reproductive assurance (Barrett 1998, Godinez-Álvarez et al 2008, Busch & Delph 2012, Bretagnolle & Gaba 2015, Cheptou 2019. For instance, the flower movements (Güemes & Boscaiu 2001), the nyctinasty (the movements of petals at the nighttime closure of flowers) (Kwiatkowska et al 2019), and cleistogamy (where the flowers never open) (Lord 1981, Sauquet 2021) can promote self-fertilization. Nevertheless, if autogamy occurs repeatedly, populations can undergo inbreeding depression (Kephart et al 1999, Goodwillie et al 2005.…”

mentioning

confidence: 99%

The mixed mating system of a widespread weed: the case of Argemone ochroleuca Sweet (Papaveraceae)

Rios‐Carrasco

Vázquez‐Santana

2022

Bot. Sci.

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Background: Argemone ochroleuca is a worldwide invasive weed but is also highly valuable for their chemical compounds. Knowledge about its reproduction will help create plans for its control or its propagation. Questions: Does A. ochroleuca has an incompatibility system like other Papaveraceae species? Which are the reproductive strategies that favor the seed formation in A. ochroleuca? Studied species: A. ochroleuca is an annual species with bisexual flowers. Study site and dates: Mexico City, Mexico. The fieldwork was performed from February to May in 2013, 2014, and 2017. Methods: Direct observations were made to describe the flower cycle of A. ochroleuca. We used self-pollinated flowers to analyze if this species is self-incompatible by following the pollen tube growth through gynoecium. Controlled pollinations were made to quantify and compare the number of seeds produced per treatment to know the mating system and explore if the species presents a mechanism of reproductive assurance through autogamy, or exhibits inbreeding depression. Results: A. ochroleuca is self-compatible and exhibits a mixed mating system. Although outcrossing is how more seeds are produced, both autogamy and pseudocleistogamy are present as reproductive assurance mechanisms. Naturally pollinated flowers produce the maximum number of seeds, but inbreeding depression is present in the population. Thus, the number of seeds will be affected by continuous selfing. Conclusions: This study highlights the mixed mating system and reproductive assurance mechanisms as successful strategies for A. ochroleuca, a common pattern in invasive weeds.

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Evolution: Cleistogamy to the rescue of zygomorphic flowers

Cited by 2 publications

References 22 publications

Sex-linked Single Nucleotide Polymorphism (SNP) identification and molecular marker development of salacca (Salacca zalacca (Gaertn.) Voss)

Sex-linked Single Nucleotide Polymorphism (SNP) identification and molecular marker development of salacca (Salacca zalacca (Gaertn.) Voss)

The mixed mating system of a widespread weed: the case of Argemone ochroleuca Sweet (Papaveraceae)

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