Temperature-Dependent Fluctuation Of Stamen Number InCardamine hirsuta(Brassicaceae)

Matsuhashi, Saeko; Sakai, Satoki; Kudoh, Hiroshi

doi:10.1086/663966

Cited by 12 publications

(12 citation statements)

References 41 publications

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“…To examine whether lateral stamen numbers change temporally, we recorded stamen numbers in plants in four populations within the range of the North lineage (see ''Results'') using a modified method from Matsuhashi et al (2012). Each population was located on a different campus of Tohoku University (Katahira, Kawauchi, Aoba1, and Aoba2).…”

Section: Change In Stamen Number Over the Growing Seasonmentioning

confidence: 99%

“…1): most plants belonging to the North and the East lineage had flowers with no lateral stamens, and those belonging to the West lineage had flowers with 0-2 lateral stamens. However, Matsuhashi et al (2012) reported that, in naturally growing plants with variation in lateral stamen number, the number showed temperature dependency. S2).…”

Section: Geographic Variation In Lateral Stamen Number In Relation Tomentioning

confidence: 99%

“…Flowers of C. hirsuta display variation in lateral stamen number (0, 1, or 2) (Jaspars-Schrader 1982; Matsuhashi et al 2012). Flowers of C. hirsuta display variation in lateral stamen number (0, 1, or 2) (Jaspars-Schrader 1982; Matsuhashi et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Invasion history of Cardamine hirsuta in Japan inferred from genetic analyses of herbarium specimens and current populations

et al. 2016

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Multiple introductions of a species are thought to enhance its invasion success by increasing genotypic diversity; this involves frequent crossing among different lineages. However, genetic diversity through crossing is less likely in autogamous species. To understand the impact of multiple introductions on the colonization success of autogamous species, we studied hairy bittercress, Cardamine hirsuta, which invaded Japan several decades ago. We detected temporal changes in its population structure using nine microsatellite markers amplified from leaf samples collected from 87 sites between 2009 and 2010, and herbarium specimens collected between 1988 and 2007. To examine whether the phenotypic variation corresponded with the genetic population structure, we also investigated the geographic variation in the lateral stamen number of this species across 49 sites. The present populations can be divided into three genetic groups, which are distributed in northern, eastern, and western Japan. This finding suggests that there are three invasive lineages (North, East, and West) in Japan. The geographic variation in lateral stamen number corresponded to the distributions of these lineages. The former distributions of the North and West lineages mostly corresponded to those found at present, but they were also historically found in eastern Japan. However, the East lineage has apparently expanded into eastern Japan, resulting in a change in dominant lineages over only a few decades. For the autogamous C. hirsuta, multiple introductions contributed toward colonization success over a wider range, which was associated with a local change in the dominant lineages.Keywords Alien species Á Biological invasion Á Brassicaceae Á Multiple introductions Á Phylogeography Á SSR analysis Electronic supplementary material The online version of this article (

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Section: Change In Stamen Number Over the Growing Seasonmentioning

confidence: 99%

Section: Geographic Variation In Lateral Stamen Number In Relation Tomentioning

confidence: 99%

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Invasion history of Cardamine hirsuta in Japan inferred from genetic analyses of herbarium specimens and current populations

et al. 2016

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“…In terms of floral organ number, it has been reported that environmental factors cause fluctuation of this variable. Lateral stamen number of Cardamine hirsuta (Brassicaceae) flower was unstable even within individual inflorescences, and developments of their lateral stamens were temperature-dependent (Matsuhashi et al, 2012). For the reasons mentioned above, more detailed analysis will be needed to obtain a complete understanding of this issue.…”

Section: Discussionmentioning

confidence: 99%

Morphological Variation and AGAMOUS-like Gene Expression in Double Flowers of Cyclamen persicum Mill.

2015

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Several kinds of double-flowered cultivars have been produced from spontaneous mutants in Cyclamen persicum Mill. The morphology and number of organs in double flowers were investigated, and were categorized into three types: "petaloid-stamen type", "petaloid-sepal type", and "extra petals in whorl 2 type". Morphological observations showed that petaloid mutations of stamen and sepal did not appear together within an individual. In addition, three types of AG-like gene were isolated from single and petaloid-stamentype double-flower buds, and expressions in each whorl were compared. All AG-like genes were expressed in whorl 3 of single flowers, but not in that of petaloid-stamen-type double flowers. In whorl 4, although expressions of the three types of AG-like gene were observed in both single and double flowers, the expression of double flowers was lower than that of single flowers. These results suggest that naturally occurring double flowers of cyclamen can be explained by the ABC-model, and it is suspected that petaloidy of the stamen is caused by the repression of AG-like gene expression in whorl 3.

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“…Plants grown at low temperature produce a greater number of organs than those at intermediate and high temperatures in Lycopersicon esculentum (Sawhney, 1983). Lateral stamen number of Cardamine hirsuta (Brassicaceae) flower is unstable even within an inflorescence, being affected by growth temperature (Matsuhashi et al, 2012). Furthermore, low and high temperatures cause an increase of petal number via petal formation in the center of the flower and the receptacle, respectively, in carnation (Dianthus caryophyllus) (Garrod and Harris, 1974).…”

Section: Introductionmentioning

confidence: 99%

Effects of Growth Temperature and Culture Season on Morphogenesis of Petaloid-stamen in Double-flowered Cyclamen

Mizunoe

2015

Hortic J

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This study was conducted to demonstrate the seasonal change of floral organ number and morphology, and the effect of growth temperature on floral morphology in double-flowered cyclamen with petaloid-stamens. In plants grown under seasonal variable temperature, floral organ number and morphology in petaloid-stamen type of double flower changed as time passed, but the degrees of such changes differed depending on the line; there were two types, namely, "variable" and "relatively stable", in terms of the number of outer and inner petaloid-stamens throughout the flowering period. In the plants grown under different constant temperatures, the rate of complete petals (petaloid-stamens) to the total organs in whorl 3 was greatest at 15°C, followed by the values at 25°C and 20°C. In contrast to complete petals, the rate of incomplete petals (petaloid-stamens) to the total organs in whorl 3 was greatest at 20°C, followed by the values at 25°C and 15°C. The rate of stamenlike organs to the total organs in whorl 3 did not differ significantly among treatments, and the rate of stamens to the total organs in whorl 3 was suppressed only at 25°C. Although the total numbers of stamens and stamen-like organs were similar at 15°C and 20°C, the developed positions of stamen-like organs and stamens were significantly different between 15°C and 20°C. Additional organs including stamens were produced inside the petaloid-stamen at 15°C, while restoration of the stamen was induced at 20°C. In conclusion, floral morphology shows seasonal change, and growth temperature affects the petaloidy of stamen in doubleflowered cyclamen. However, the effect on petaloidy differs according to the line.

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Temperature-Dependent Fluctuation Of Stamen Number InCardamine hirsuta(Brassicaceae)

Cited by 12 publications

References 41 publications

Invasion history of Cardamine hirsuta in Japan inferred from genetic analyses of herbarium specimens and current populations

Invasion history of Cardamine hirsuta in Japan inferred from genetic analyses of herbarium specimens and current populations

Morphological Variation and <i>AGAMOUS</i>-like Gene Expression in Double Flowers of <i>Cyclamen persicum</i> Mill.

Effects of Growth Temperature and Culture Season on Morphogenesis of Petaloid-stamen in Double-flowered Cyclamen

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