English papers
100.
Hasegawa, T. M., Itagaki, T., and Sakai, S. (2022)
Intraspecific variation in morphology of spiny pollen grains along
an altitudinal gradient in an insect-pollinated shrub. Plant
Biology in press.
99. Sakai, S. (2022) Evolution of mixed
mating: effects of among-parent variation in early-acting inbreeding
depression coupled with overproduction of ovules. Journal of
theoretical Biology Article 111241.
98. Itagaki, T.,
Hoshi, K., Aoyagi Blue, Y., and Sakai, S. (2022)
Attractiveness of floral traits to diverse pollinators in
zygomorphic flowers of Isodon trichocarpus (Lamiaceae). Biological
Journal of the Linnean Society 136:13-22.
97. Sakai,
S. (2021) Why are deleterious mutations maintained in selfing
populations? An analysis of the effects of early- and late-acting
mutations by a two-locus two-allele model. Journal of
theoretical Biology Article 110956.
96. Hasegawa, T.
M, Makino, T. T., and Sakai, S. (2021) Optimal pollen
stickiness to pollinators for maximizing paternal fitness: Increased
number of recipient flowers or increased pollen deposition on
recipient flowers? Journal of theoretical Biology Article
110731.
95. Nakano, S.,
Oguro, M., Itagaki T., and Sakai, S. (2020) Florivory
defence: are phenolic compounds distributed differently within
perianths?. Biological Journal of the Linnean Society 131:12-25.
94. Sakai,
S. (2020) Maintenance of high inbreeding depression in selfing
populations: two-stage effect of early- and late-acting mutations. Journal
of theorecial Biology Article 110307.
93. Aoyagi Blue,
Y. and Sakai, S. (2020) Low mutation rates promote the
evolution of advantageous traits by preventing interference from
deleterious mutations. Genetica 148:101–108.
92. Itagaki, T.,
Misaki, A., and Sakai, S. (2020) Selection for floral
integration and trait variation in zygomorphic flowers of Aconitum
japonicum ssp. subcuneatum (Ranunculaceae). Plant
Ecology 221:347–359.
91. Furukawa, T.,
Itagaki, T., Murakoshi, N., and Sakai, S. (2020) Inherited
dimorphism in cleistogamous flower production in Portulaca
oleracea: comparison of 16 populations growing under different
environmental conditions. Annals of Botany 125:423-431.
90. Mochizuki, J.,
Itagaki, T., Aoyagi Blue, Y., Ito, M., and Sakai, S. (2019)
Ovule and seed production patterns in relation to flower size
variations in actinomorphic and zygomorphic flower species. AoB
Plants 11: plz061; doi: 10.1093/aobpla/plz061.
89. Itagaki, T.,
Mochizuki, J., Aoyagi Blue, Y., Ito, M., and Sakai, S.
(2019) Evolution towards minimum ovule size? Ovule size variations
and the relative sizes of ovules. Annals of Botany 1253-1256.
88. Wakabayashi,
K., Oguro, M., Itagaki, T., and Sakai, S. (2018) Floral
induced and constitutive defense against florivory: comparison of
chemical traits in 12 herb species. Plant Ecology 219:985-997.
87. Misaki, A.,
Itagaki, T., Matsubara, Y., and Sakai, S. (2018)
Intra-flower variation in nectar secretion: secretion patterns and
pollinator behavior in male- and female-phase flowers. American
Journal of Botany 105:842-850.
86. Matsuhashi, S.,
Kudoh, H., Maki, M., Cartolano, M., Tsiantis, M., Itagaki, T., and Sakai,
S. (2016) Invasion history of Cardamine hirsuta
in Japan inferred from genetic analyses of herbarium specimens and
current populations. Biological Invasions
18:1939-1951.
85. Sakai, S. (2016) How have
self-incompatibility haplotypes diversified? Generation of new
haplotypes during the evolution of self-incompatibility from
self-compatibility. American Naturalist 188:163-174.
84. Itagaki, T., Kimura, M.
K., Maki, M. and Sakai, S. (2016)
Differential self-fertilization rates in response to variation in
floral traits within inflorescences of Aquilegia buergeriana
var. oxysepala (Ranunculaceae). Botanical Journal
of the Linnean Society 181:294-304.
83. Oka, C., Itagaki, T.,
and Sakai, S. (2016)
Effect of the number of embryos in a seed and of seed size on
seedling emergence and growth in polyembryonic Ophiopogon
japonicus var. umbrosus (Asparagaceae). Botany
94:261-268.
82. Matsubara, Y. and Sakai, S. (2016) The role
of flood regime on invasive success of exotic species growing in
riparian environments. Biological Invasions 18: 793-808.
81. Fusato, Y., Itagaki, T.,
Oguro, M., and Sakai, S. (2015)
Effect of change in floral openness with floral age on floral
display and reproduction in Gentiana. Acta
Oecologica 67:17-23.
80. Itagaki, T., Kimura, M. K., Lian, L., and Sakai,
S. (2015) Development of microsatellite markers for Aquilegia
buergeriana var. oxysepala (Ranunculaceae), a
vulnerable Japanese herb. Plant Species Biology
30:159-162.
79. Oguro, M. and Sakai, S. (2015) Relation
between flower head traits and florivory in Asteraceae: A
phylogenetically controlled approach. American Journal of
Botany 102:407-416.
78. Onodera, H., Oguro, M.,
and Sakai, S. (2014)
Effects of nutrient contents and defense compounds on herbivory in
reproductive organs and leaves of Iris gracilipes. Plant Ecology 215:1025-1035.
77. Sakai, S. and Wakoh, H.
(2014) Initial invasion of gametophytic self-incompatibility alleles
in the absence of tight linkage between pollen and pistil S
alleles. American Naturalist
184:248-257.
76. Oguro, M. and Sakai, S. (2014) Difference in
defense strategy in flower heads and leaves of Asteraceae: multiple
species approach. Oecologia
174:227-239.
75. Sakai, S. (2013) Evolutionarily
stable size of a megagametophyte: evolution of tiny megagametophytes
of angiosperms from large ones of gymnosperms. Evolution 67:539-547.
74. Matsuhashi, S., Sakai, S., and Kudo, H.
(2012)
Temperature-dependent fluctuation of stamen number in Cardamine
hirsuta (Brassicaceae). International Journal of Plant Sciences 173:391-398.
73. Sakai, S. (2011) Evolution of
exalbuminous seeds as a result of competition between
maternally-derived and paternally-derived genes. Evolutionary Ecology Research
12:855-871.
72. Sakai, S. (2010) With whom is
the gene in conflict in offspring production?: synthesis of the
theories of intragenomic and parent-offspring conflict. Journal of theoretical Biology
266:367-373.
71. Inoue, M. N., Makino, T.
T., Yokoyama, J., and Sakai, S.
(2010) Is Bombus terrestris
(Hymenoptera: Apidae) a stronger competitor against native species?:
a comparison of foraging efficiency. Applied Entomology and Zoology 45:71-75.
70. Ito, K. and Sakai, S. (2009) Optimal defense
strategy against herbivory in plants: Conditions selecting for
induced defense, constitutive defense, and no-defense. Journal of theoretical Biology
260:453-459.
69. Sakai, S. and Kojima, T. (2009)
Overproduction and selective abortion of ovules based on the order
of fertilization revisited. Journal
of theoretical Biology 260:430-437.
68. Oguro, M. and Sakai, S. (2009) Floral
herbivory at different stages of flower development changes
reproduction in Iris gracilipes
(Iridaceae). Plant Ecology
202:221-234.
67. Morinaga, S.-I., Kumano,
Y., Ota, A., Yamaoka, R., and Sakai,
S. (2009) Day-night fluctuations in floral scent and their
effects on reproductive success in Lilium auratum. Population
Ecology 51:187-195
66. Morinaga, S.-I., Nagano,
A. J, Miyazaki, S. , Kubo, M., Demura, T., Fukuda, H., Sakai, S., and Hasebe, M.
(2008) Ecogenomics of cleistogamous and chasmogamous
flowering: genome-wide gene expression patterns from cross-species
microarray analysis in Cardamine
kokaiensis (Brassicaceae). Joural of Ecology 96:1086-1097.
65. Kato, S. and Sakai, S. (2008) Nectar
secretion strategy in three Japanese species: changes in nectar
volume and sugar concentration dependent on flower age and flowering
order. Botany 86:337-345.
64. Sakai, S. , Suzuki, Y.,
Itagaki, T., Tsujisawa, H., and Makino, T. T. (2008) On the
function of hermaphrodite florets in female inflorescences in Petasites japonicus
(Asteraceae). Botany
86:213-217.
63.
Makino, T. T. and Sakai, S. (2007)
Experience changes pollinator responses to floral display size: from
size-based to reward-based foraging. Functional Ecology 21:854-863.
62. Sakai, S. and Harada Y. (2007) Optimum size
and number of seeds when seeds suffer predispersal predation.
Evolutionary Ecology Research
9:599-617.
61.
Sakai, S. (2007) A
new hypothesis for the evolution of overproduction of ovules: an
advantage of selective abortion for females not associated with
variation in genetic quality of the resulting seeds. Evolution 61:984-993.
60. Makino T. T.,
Ohashi, K. and Sakai, S. (2007)
How
do floral display size and the density of surrounding flowers
influence the likelihood of bumble-bee revisitation to a plant? Functional Ecology 21:87-95.
59. Fujitaka, T. and Sakai,
S. (2007) Sexual dimorphism in clonal growth forms and
ramet distribution patterns in Rumex
acetosella (Polygonaceae). Ecological Reaearch 22:248-254.
58. Hiraga, T. and Sakai,
S. (2007) The effects of inflorescence size and flower
position on biomass and temporal sex allocation in Lobelia sessiliflora. Plant Ecoogy 188:205-214.
57. Itagaki, T. and Sakai,
S. (2006) Relationship between floral longevity and
floral sex allocation among flowers within inflorescences in Aquilegia buergeriana var. oxysepala
(Ranunculaceae). American
Journal of Botaby 93:1320-1327.
56. Tsuchimatsu, T., Sakai,
S., and Ito, M. (2006) Sex allocation bias in
hermaphroditic plants: effects of local competition and seed
dormancy. Evolutionary
Ecology Reaearch 8:829-842.
55. Sakai, A., Sasa, A., and
Sakai, S. (2006) Do sexual
dimorphisms in reproductive allocation and shoot growth increase
with an increase of altitude? a case of the shrub willow Salix reinii (Salicaceae).
American Journal of Botany
93:988-992.
54. Sakai, S.,
Sakai, A. and Fujioka, K. (2006) Seed production in Cardiocrium cordatum: effects
of nitrogen and dry mass availability of a plant. Canadian Journal of Botany 84:805-812.
53. Morinaga, S.-I. and Sakai,
S. (2006) Functional differentiation in pollination processes
between the outer and the inner perianths in Iris gracilipes (Iridaceae). Canadian
Journal of Botany 84:164-171.
52. Kabeya, D. and Sakai,
S. (2005) The relative importance of carbohydrate and nitrogen
for the resprouting ability of Quercus
crispula seedlings. Annals of Botany 96:479-488.
51. Takahashi, K., Makino,
T. T., and Sakai, S. (2005) Effects of sib-competition on
female reproductive success in Salvia
lutescens Koidz. var. crenata. Evolutionary Ecology
Research 7:1021-1207.
50. Miyake, Y. C. and Sakai,
S. (2005) Effects of number of flowers per raceme and number
of racemes in a plant on bumblebee visits and female reproductive
success in Salvia nipponica
(Labiatae). Ecological Research 20:395-403.
49. Makino, T. T. and Sakai,
S. (2005) Does interaction between bumblebees (Bombus ignitus) reduce their
foraging area?: bee-removal experiments in a net cage. Behavioral
Ecology and Sociobiolgy 57:617-622.
48. Sakai, S. and Harada, Y. (2005) Production of
offspring using current income and reserves: size-number trade-off
and optimal offspring size. Journal of theoretical Biolgy
233:65-73.
47. Sakai, S. and Sakai, A. (2005) Nature of size-number
trade-off: test of the terminal-stream-limitation model for seed
production of Cardiocrium
Cordatum. Oikos 108:105-114.
46. Makino, T. T. Sakai, S. (2004) Findings on
spatial foraging patterns of bumblebees (Bombus ignitus) from a bee-tracking experiment
in a net cage. Behavioral Ecology and Sociobiology
56:155-163.
45. Iwaizumi, M. Sakai, S. (2004) Variation in
flower biomass among nearby populations in Impatiens textori
(Balsaminaceae): effects of population plant densities. Canadian
Journal of Botany 82:563-572.
44. Sakai, S. and Harada, Y. (2004) Size-number
trade-off and optimal offspring size for offspring produced
sequentially using a fixed amount of reserves. Journal of
theoretical Biology 226: 253-264.
43. Kabeya, D. and Sakai, S. (2003) The role of
roots and cotyledons as storage organs in early stages of
establishment in Quercus crispula: a quantitative
analysis of the nonstructural carbohydrate in cotyledons and
roots. Annals of Botany 92:537-545.
42. Morinaga, S.-I., Tsuji, K., and Sakai, S.
(2003) Consequences of differences in flowering date in seed
production in Heloniopsis orientalis (Liliaceae). American
Journal of Botany 90: 1153-1158.
41. Kabeya, D., Sakai, A., Matsui, K., Sakai, S.
(2003) Resprouting ability of Quercus crispula seedlings
depends on the vegetation cover of their microhabitats. Journal
of Plant Research 116: 207-216.
40. Sakai, A., Matsui, K. , Kabeya, D. Sakai, S.
(2003) Altitudinal variation in lifetime growth trajectory and
reproductive schedule of a sub-alpine conifer Abies mariesii.
Evolutionary Ecology Research 5: 671-689.
39. Sakai, A. Sakai, S. (2003) Size-dependent ESS
sex allocation in wind-pollinated cosexual plants: fecundity vs.
stature effects. Journal of theoretical Biology 222: 283-295.
38. Kimura, T., Ishii, H. S. Sakai, S. (2002)
Selfed-seed production depending on individual size and flowering
sequence in Iris gracilipes (Iridaceae). Canadian
Journal of Botany 80: 1096-1102.
37. Ishii, H. S. Sakai, S. (2002) Temporal
variation in floral display size and individual floral sex
allocation in racemes of Narthecium asiaticum (Liliaceae). American
Journal of Botany 89: 441-446.
36. Ishii, H. S. Sakai, S. (2001) Implications of
geitonogamous pollination for floral longevity in Iris
gracilipes (Iriddaceae). Functional Ecology 15: 633-641.
35. Ishii, H. S. Sakai, S. (2001) Effects of
floral display size and floral positions on individual floral
longevities in racemes of Narthecium asiaticum
(Liliaceae). Functional Ecology 15: 396-405.
34. Sakai, S. and Harada, Y. (2001) Why do large mothers
produce large offspring?: theory and a test. American
Naturalist 157: 348-359.
33. Sakai, S. and Harada, Y. (2001) Sink-limitation and
the size-number trade-off of organs: production of organs using a
fixed amount of reserves. Evolution 55: 467-476.
32. Sakai, S. (2000) Biased sex allocation in
hermaphroditic plants. Journal of Plant Research 113: 335-342.
31. Sakai, S. (2000) Size-number trade-off and
allocation to flower production in animal-pollinated plants. Plant
Species
Biology 15: 261-268.
30. Ishii, H. S. & Sakai, S. (2000) Optimal
timing of flower abortion; experimental study on Erythronium
japoncum (Liliaceae). Functional Ecology 14: 122-128.
29. Sakai, S. (1999) Female-biased sexual
allocation in cosexual plants: result of sink-limited growth of
fruits. Evolutionary Ecology Research 1: 953-957.
28. Sakai, S., Ishii, H. S. (1999) Why be
completely outcrossing? evolutionarily stable outcrossing
strategies in an environment where outcross pollen availability is
unpredictable. Evolutionary Ecology Research 1: 211-222.
27. Sakai, S. (1998) Female-biased sexual
allocation in relation to growth rate of fruit in Erythronium
japonicum. Oecologia 117: 391-395.
26. Sakai, A. Sakai, S. (1998) A test for the
resource recovery hypothesis: tree sprouting using carbohydrates
from above-ground parts. Annals of Botany 82: 213-216.
25. Sakai, S., & Harada, Y. (1998) Does the
trade-off between growth and reproduction select for female-biased
sexual allocation in cosexual plants? Evolution 52: 1204-1207.
24. Sakai, S., Kikuzawa, K., Umeki, K. (1998)
Evolutionarily stable resource allocation for production of
wind-dispersed seeds. Evolutionary Ecology 12: 477-485.
23. Sakai, S. (1997) An analytical model for flower
production in an environment where resource availability is
unpredictable. Journal of theoretical Biology 189: 449-452.
22. Sakai, S., Sakai, A., Ishii, H. S. (1997) Patterns of
wing size variation in seeds of the lily Cardiocrinum cordatum
(Liliaceae). American Journal of Botany 84: 1275-1278.
21. Sakai, A., Sakai, S., Akiyama, F. (1997) Do
sprouting tree species on erosion-prone sites carry large reserves
of resources? Annals of Botany 79: 625-630.
20. Sakai, S. (1996) On ovule production in environments
where pollinator or resource availability is unpredictable. Journal
of theoretical Biology 183: 317-327.
19. Sakai, S., Sakai, A. (1996) Why is there variation in
mean seed size among plants within single populations? Test of the
fertilization efficiency hypothesis. American Journal of
Botany 83: 1454-1457.
18. Sakai, S. (1996) Using phylogenies to explain seed
size variation among plants. Journal of evolutionary Biology
9: 243-252.
17. Sakai, S. (1996) Theoretical approaches on the growth
strategy of plants in upredictable enviornments. Plant
Morphology 8: 21-26.
16. Sakai, S., & Sakai, A. (1995) Flower
size-dependent variation in seed size: theory and a test. American
Naturalist 145: 918-934.
15. Sakai, S. (1995) Evolutionarily stable selfing rates
of hermaphroditic plants in competing and delayed selfing modes
with allocation to attractive structures. Evolution 49:
557-564.
14. Sakai, S. (1995). A model for seed size variation
among plants. Evolutionary Ecology 9: 495-527.
13. Sakai, S. (1995) Evolutionarily stable growth of a
sapling which waits for future gap formation under closed canopy.
Evolutionary Ecology 9: 444-452.
12. Sakai, S. (1995) Optimal resource allocation to
vegetative and sexual reproduction of a plant growing in a
spatially varying environment. Journal of theoretical Biology
175: 271-282.
11. Sakai, S. (1994) Optimal leaf phenology and
photosynthetic capacity of herbs dependent on the genet density of
herbs in their habitat. Journal of theoretical Biology 166:
237-244.
10. Sakai, S. (1993) Allocation to attractive structures
in animal-pollinated flowers. Evolution 47: 1711-1720.
9. Sakai, S. (1993) A model for nectar secretion in
animal-pollinated plants. Evolutionary Ecology 7: 394-400.
8. Sakai, S., & Harada, Y. (1993) Habitat productivity
and optimal growth schedule of annual plants in a seasonal
environment. Journal of theoretical Biology 163: 347-363.
7. Sakai, S. (1993) The evolutionary viewpoint on the
diversity in above-ground architecture of herbaceous plants. Forma
245-253.
6. Sakai, S. (1992) Asynchronous leaf expansion and
shedding in a seasonal environment: result of a competitive game.
Journal of theoretical Biology 154: 77-90.
5. Sakai, S. (1991) A model analysis for the adaptive
architecture of herbaceous plants. Journal of theoretical
Biology 148: 535-544.
4. Sakai, S. (1990) Sympodial and monopodial branching in
Acer: implications for tree architecture and adaptive
significance. Canadian Journal of Botany 68: 1549-1553.
3. Sakai, S. (1990) The relationship between bud scale
morphology and indeterminate and determinate growth patterns in
Acer (Aceraceae). Canadian Journal of Botany 68: 144-148.
2. Sakai, S. (1990) Sympodial and monopodial branching in
Acer: evolutionary trend and ecological implications. Plant
Systematics and Evolution 171: 187-1974.
1. Sakai, S. (1987) Patterns of branching and extension
growth of vigorous saplings of Japanese Acer species in relation
to their regeneration strategies. Canadian Journal of Botany
65: 1578-1585.