Morphological and genetic analysis of a cleistogamous mutant in rapeseed (Brassica napus L.)

Faisal, Shah; Guo, Yuan; Zang, Shan; Cao, Biting; Qu, Gao-Ping; Hu, Shengwu

doi:10.1007/s10722-017-0598-x

Cited by 6 publications

(8 citation statements)

References 26 publications

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“…This mode may be beneficial to enhance the adaptability of D. wangliangii to adverse environments, such as drought, short florescence, and pollinator‐scarce conditions (Abdel‐Ghani, Parzies, Omary, & Geiger, ; Miranda & Vieira, ). In addition, cleistogamy reduces the threat of genetic contamination and gene flow through crossing with other plants of the same species (Faisal et al, ; Travers, Anderson, Vitt, & Harris, ; Zou et al, ). Outcrossing has a selective advantage, such as maintaining high genetic diversity and avoiding sibling competition (Antlfinger, ; Cozzolino & Widmer, ; Culley & Klooster, ; Schmitt, Ehrhardt, & Swartz, ).…”

Section: Discussionmentioning

confidence: 99%

“…In general, cleistogamy is favored under adverse and stressful conditions (e.g., scarce-pollinator, water deficiencies), which are unsuitable for cross-pollination (Schemske, 1978;Solbrig, 1976 (Faisal et al, 2018;Travers, Anderson, Vitt, & Harris, 2018;Zou et al, 2018). Outcrossing has a selective advantage, such as maintaining high genetic diversity and avoiding sibling competition (Antlfinger, 1986;Cozzolino & Widmer, 2005;Culley & Klooster, 2007;Schmitt, Ehrhardt, & Swartz, 1985).…”

Section: Dendrobium Dixanthummentioning

confidence: 99%

“…It refers to a pollination system in which unopened flowers are capable of autogamy resulting in fruit productions. This trait is an adaptive mechanism for retaining reproduction under poor growth conditions, such as drought, extreme airflow, and sunlight (Faisal et al, 2018;Liu et al, 2006;Lord, 1981;Zou, Zhou, Angessa, Zhang, & Li, 2018). In a majority of cleistogamous species, closed (cleistogamous, CL) and open flowers (chasmogamous, CH) usually occur on the same individuals during a single flowering season.…”

Section: Introductionmentioning

confidence: 99%

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A novel case of autogamy and cleistogamy in Dendrobium wangliangii: A rare orchid distributed in the dry‐hot valley

Wang

Shao

et al. 2019

Ecology and Evolution

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Dendrobium wangliangii is an epiphytic orchid distributed in the Jinshajiang dry‐hot valley in Luquan County, Yunnan Province, China. Most Dendrobium spp. typically have a low fruit set, but this orchid shows a higher fruit set under natural conditions despite the lack of effective pollinators. The pollination biology of the critically endangered D. wangliangii was investigated in this study. A fruit set rate of 33.33 ± 4.71% was observed after bagging treatment in 2017 and a high fruit set rate (65.72 ± 4.44% in 2011; 50.79 ± 5.44% in 2017) was observed under natural conditions, indicating that D. wangliangii is characterized by spontaneous self‐pollination. The anther cap blocked the growing pollinium; thus, the pollinium slid down and reached the stigmatic cavity, leading to autogamous self‐pollination. Specifically, 51.50% of 162 unopened flowers (total 257 flowers) of this Dendrobium species under extreme water‐deficit conditions developed into fruits, suggesting the presence of cleistogamy in D. wangliangii. Here, cleistogamy may represent the primary mode of pollination for this orchid. Spontaneous self‐pollination and specific cleistogamous autogamy could represent major adaptions to the drought and pollinator‐scarce habitat in the Jinshajiang dry‐hot valley.

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Section: Discussionmentioning

confidence: 99%

Section: Dendrobium Dixanthummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A novel case of autogamy and cleistogamy in Dendrobium wangliangii: A rare orchid distributed in the dry‐hot valley

Wang

Shao

et al. 2019

Ecology and Evolution

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“…In some species, this intraspecific phenotypic change is stable, like the gender polymorphism (27,28) or the adaptive floral colour polymorphism exhibited as a response to the selective pressures exerted by certain pollinators (29,30). In other species, discrete phenotypic changes, although affecting pollination traits, seem to be just the consequence of some singular and often unstable mutations affecting floral colour (31), the production of cleistogamous flowers (32) or changes in the expression of homeotic genes that modify the formation of the floral organs (33,34). We compiled information on the phenotypes of the different morphs in 34 polymorphic species and calculated their values of intraspecific disparities (Figure 1a, Supplementary Data 2).…”

Section: Plasticity-mediated Floral Disparity and Divergencementioning

confidence: 99%

Phenotypic plasticity triggers rapid morphological convergence

Gómez

González‐Megías

Narbona

et al. 2021

Preprint

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Phenotypic convergence, the independent evolution of similar traits, is ubiquitous in nature, happening at all levels of biological organizations and in most kinds of living beings. Uncovering its mechanisms remains a fundamental goal in biology. Evolutionary theory considers that convergence emerges through independent genetic changes selected over long periods of time. We show in this study that convergence can also arise through phenotypic plasticity. We illustrate this idea by investigating how plasticity drives Moricandia arvensis, a mustard species displaying within-individual polyphenism in flowers, across the morphological space of the entire Brassicaceae family. By compiling the multidimensional floral phenotype, the phylogenetic relationships, and the pollination niche of over 3000 Brassicaceae species, we demonstrated that Moricandia arvensis exhibits a plastic-mediated within-individual floral disparity greater than that found not only between species but also between higher taxonomical levels such as genera and tribes. As a consequence of this divergence, M. arvensis moves outside the morphospace region occupied by its ancestors and close relatives, crosses into a new region where it encounters a different pollination niche and converges phenotypically with distant Brassicaceae lineages. Our study suggests that, by inducing phenotypes that explore simultaneously different regions of the morphological space, plasticity triggers rapid phenotypic convergence.

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“…64 , Zhong9-Clg65 , and BnaC03.FBA 66 mutants in canola (Brassica napus). The rice cl7(t) mutant was obtained through ethyl methanesulfonate (EMS)…”

mentioning

confidence: 99%

Engineered Cleistogamy inCamelina sativafor bioconfinement

Huang

Gao

McAdams

et al. 2022

Horticulture Research

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Summary Camelina sativa is a self-pollinating and facultative outcrossing oilseed crop. Genetic engineering has been used to improve camelina yield potential for altered fatty acid composition, modified protein profiles, improved seed and oil yield, and enhanced drought resistance. The deployment of transgenic camelina in the field posits high risks related to the introgression of transgenes into non-transgenic camelina and wild relatives. Thus, effective bioconfinement strategies need to be developed to prevent pollen-mediated gene flow (PMGF) from transgenic camelina. In the present study, we overexpressed the cleistogamy (i.e. floral petal non-openness)-inducing PpJAZ1 gene from peach in transgenic camelina. Transgenic camelina overexpressing PpJAZ1 showed three levels of cleistogamy, affected pollen germination rates after anthesis but not during anthesis, and caused a minor silicle abortion only on the main branches. We also conducted field trials to examine the effects of the overexpressed PpJAZ1 on PMGF in the field, and found that the overexpressed PpJAZ1 dramatically inhibited PMGF from transgenic camelina to non-transgenic camelina under the field conditions. Thus, the engineered cleistogamy using the overexpressed PpJAZ1 is a highly effective bioconfinement strategy to limit PMGF from transgenic camelina, and could be used for bioconfinement in other dicot species.

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Morphological and genetic analysis of a cleistogamous mutant in rapeseed (Brassica napus L.)

Cited by 6 publications

References 26 publications

A novel case of autogamy and cleistogamy in Dendrobium wangliangii: A rare orchid distributed in the dry‐hot valley

A novel case of autogamy and cleistogamy in Dendrobium wangliangii: A rare orchid distributed in the dry‐hot valley

Phenotypic plasticity triggers rapid morphological convergence

Engineered Cleistogamy inCamelina sativafor bioconfinement

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