ライフサイエンスコーパス: pollen grain

1 f microspores, each of which develops into a pollen grain.

2 /or the positioning of the MGU in the mature pollen grain.

3 ellular tryphine layer that coats the mature pollen grain.

4 d together to give rise to a viable, fertile pollen grain.

5 r microspores, each of which develops into a pollen grain.

6 give rise to a three-celled gametophyte, the pollen grain.

7 nit dedicated to the development of a single pollen grain.

8 ritical role it plays in the survival of the pollen grain.

9 ls in Arabidopsis suspension cells and poppy pollen grains.

10 scopy revealed a collapsed morphology of the pollen grains.

11 specialized cell types such as hydathodes or pollen grains.

12 ltimately in anther rupture and dispersal of pollen grains.

13 addition, strong expression was observed in pollen grains.

14 KF1 promoter directed high GUS expression in pollen grains.

15 on the extracellular pollen coat of maturing pollen grains.

16 ctivity is localized predominantly to mature pollen grains.

17 ents of the extracellular tryphine of mature pollen grains.

18 the homogalacturonan was higher in pme48-/- pollen grains.

19 stitution and the production of diploid (2n) pollen grains.

20 s such as bacterial cells, fungal spores and pollen grains.

21 second most expressed PME in dry and imbibed pollen grains.

22 ith P12-BnCysP1 failed to produce functional pollen grains.

23 nce that HPC is able to reduce the amount of pollen grains.

24 organs, AtRPL10C expression is restricted to pollen grains.

25 nther, producing neither microsporangium nor pollen grains.

26 ith the different lipids isolated from olive pollen grains.

27 ds to the formation of diploid and polyploid pollen grains.

28 ripidae were covered by abundant Cycadopites pollen grains.

29 ferent expression pattern, being specific to pollen grains.

30 AtGATL4 expression appears to be confined to pollen grains.

31 opologies, such as the spherical surfaces of pollen grains.

32 aments, defective carpels, and dysfunctional pollen grains.

33 Here, we show that tobacco pollen grains accumulate phosphorylated and nonphosphory

34 ated and occurs in vivo only when desiccated pollen grains acquire water from the female, thus enabli

35 The early postpollination stages of pollen grain adhesion, pollen hydration, pollen tube pen

36 ments; these environments discriminate among pollen grains, allowing only those that are appropriatel

37 % of GFP-synthesizing pollen based on 30,000 pollen grains analyzed per event.

38 ency of 56.6%, based on four plants and 1306 pollen grains analyzed.

39 nts, immotile sperm cells develop within the pollen grain and are delivered to female gametes by a po

40 ecular pathway of TE siRNA production in the pollen grain and demonstrate that siRNAs produced from p

41 opose a model of starch synthesis within the pollen grain and discuss the nutrient transport route fe

42 presence in the cytosol and cell wall of the pollen grain and the growing pollen tube of plasmolyzed

43 ivated Ca2+ channels from Lilium longiflorum pollen grain and tube tip protoplasts.

44 e in various tissues, most abundantly in the pollen grain and tube, and encode a protein that is a ty

45 nts, as well as in the vegetative nucleus of pollen grains and in dedifferentiated plant cell culture

46 ys that monitored adhesion of populations of pollen grains and individual cells.

47 specialized collection and transportation of pollen grains and likely gymnosperm pollination by 110-1

48 e are expressed in sperm cells of developing pollen grains and pollen tubes in Arabidopsis.

49 larged endothecium, and vacuolation affected pollen grains and resulted in the irregular shape or col

50 ion in seedling height and produced aberrant pollen grains and short siliques with aborted embryos, s

51 are regulated by rapid communication between pollen grains and stigmatic papillae and are fundamental

52 ted partial fertility with even fewer normal pollen grains and tetrads than those of the 35S::ASK1 li

53 1 mutant, although the percentages of normal pollen grains and tetrads were reduced.

54 Here we show that pollen grains and their extracts contain intrinsic NADPH

55 e previously characterized H+ fluxes in lily pollen grains and tubes, as well as the poor anion selec

56 erization of F-actin in populations of maize pollen grains and tubes.

57 ice plants had reduced proportions of viable pollen grains and were male-sterile, but were able to pr

58 were expressed to very high levels in mature pollen grains, and are potentially involved in the self-

59 ous environments, such as bacteria, viruses, pollen grains, and dust.

60 ral styles and filaments, the germination of pollen grains, and the growth of pollen tubes.

61 eeding depression for the fraction of viable pollen grains, and to 26% of the inbreeding depression f

62 to be large enough to liberate anemophilous pollen grains, and unsteady boundary-layer forces produc

63 e to flowering, flower number, petal length, pollen grains/anther, pollen viability, and ovule number

64 ogenesis of the SEC8 mutants, and the mutant pollen grains appear to respond to the signals that init

65 Pollen grains are encased by a multilayered, multifuncti

66 sis of infrared microscopy spectra of single pollen grains are hampered by Mie-type scattering.

67 oducts of microsporogenesis remain fused and pollen grains are released as tetrads.

68 stt1 pollen grains are smaller than wild type, have reduced g

69 Developing pollen grains are symplasmically isolated from the sporo

70 Pollen grains are the male gametophytes that deliver spe

71 r, in vivo assays indicate that these mutant pollen grains are unable to germinate a pollen tube.

72 ering plants, the haploid male gametophytes (pollen grains) are generated in the anther from reproduc

73 y Calberla solution and then classified main pollen grains as a causative agent of pollinosis.

74 elying on the first appearance of tricolpate pollen grains as a lower bound for the age of eudicots.

75 Translatomes of pollen grains as well as in vivo- and in vitro-cultured

76 ed, resulting in the formation of bicellular pollen grains at anthesis.

77 showing substructure of an anther and single pollen grains at the stigma and anthers.

78 self-incompatibility, under which individual pollen grains bear specificities determined by one or bo

79 s of LATB caused similar depolymerization in pollen grains before germination and in pollen tubes.

80 loral tissues was high in stigma, ovary, and pollen grains, but low in petals, sepals, the epidermis

81 In this study we propose the concept that pollen grains can be engineered for use as a simple modu

82 ly deposit the pollen coat at ET, which made pollen grains clump and prevented their normal dispersal

83 ae interpreted as specialized structures for pollen grain collection, functionally equivalent to the

84 The surface of a pollen grain consists of an outermost coat and an underl

85 Ultrastructural analyses revealed that these pollen grains contained aberrant endomembranes and lacke

86 the ovule contains the egg cell, whereas the pollen grain contains two sperm cells inside a supportin

87 A Manihot sp. pollen grain dated to 4600 calendar yr B.C. (5800 yr B.P

88 After that, all pollen grains deformed and collapsed.

89 igma to differentially modulate hydration of pollen grains, depending on whether the pollen is recogn

90 n microscopy to determine that double-mutant pollen grains develop plasma membrane irregularities fol

91 Pollen grain development was severely affected in double

92 ss) mutations that define genes required for pollen grain development, pollen tube growth in the stig

93 During microspore maturation, adl1C-1 pollen grains display defects in the plasma membrane and

94 ence suppression of NaSIPP in Nicotiana spp. pollen grains disrupts the SI by preventing pollen tube

95 ally expressed in the vegetative cell of the pollen grain during pollen maturation which is essential

96 the AtPTEN1 gene is expressed exclusively in pollen grains during the late stage of development.

97 Pollen grains express AtTIP1;3 and AtTIP5;1, two members

98 During reproduction in flowering plants, pollen grains form a tube that grows in a polarized fash

99 During angiosperm reproduction, pollen grains form a tube that navigates through female

100 Pollen grains from homozygous mutant lines displayed a s

101 systems, including mite and insect cuticles, pollen grains, fungal spores, and insect eggs.

102 ntially regulated in developing microspores/ pollen grains (gametophyte) and tapetal cells (sporophyt

103 lantacyanin, and a small percentage of these pollen grains germinate in the closed anthers.

104 In flowering plants, pollen grains germinate on the pistil and send pollen tu

105 Double mutant pollen grains germinated and grew tubes down the transmi

106 the pollen grain, which, in turn, influences pollen grain germination.

107 at the growing tip, starting at the time of pollen grain germination.

108 llen grains were much smaller than wild-type pollen grains, glued together, and totally collapsed.

109 As early as the bicellular stage, affected pollen grains in raring-to-go plants acquire or retain w

110 Cytological analysis of the pollen grains in these lines showed that about 50% were

111 oductive tract begins with the stigma, where pollen grains initially adhere, and extends through the

112 f the embryo sac by the two sperm cells of a pollen grain initiates seed development.

113 g of the exit of the male germ unit from the pollen grain into the tube.

114 The conversion of allergic pollen grains into carbon microstructures was carried ou

115 Germination of pollen grains is a crucial step in plant reproduction.

116 t is believed that rejection of incompatible pollen grains is effected by recognition events between

117 The haploid male gametophyte, the pollen grain, is a terminally differentiated structure w

118 ompared to wild-type pollen, although mutant pollen grains lacked an obvious cellular defect.

119 ::GUS expression is confined to stipules and pollen grains leading to fucosylation of the walls of th

120 enged on 2 consecutive days with either 4000 pollen grains/m(3) of Dactylis glomerata pollen or clean

121 An Arabidopsis pollen grain (male gametophyte) consists of three cells:

122 The haploid pollen grain (male gametophyte) extends a pollen tube th

123 , and also play a gametophytic role later in pollen grain maturation.

124 In contrast, in developing microspores/pollen grains, maximal expression of the lipid marker ge

125 dded within the large vegetative cell of the pollen grain, mRNAs from sperm are poorly represented in

126 confined to the cytoplasm of the trinucleate pollen grains: no signal was detected in the tapetum.

127 ation, gasification and ionization; a single pollen grain of 25 mum diameter can give a plume of comb

128 Upon release from the anther, pollen grains of angiosperm flowers are exposed to a dry

129 Pollen grains of Arabidopsis (Arabidopsis thaliana) cont

130 Pollen grains of Arabidopsis (Arabidopsis thaliana) cont

131 Mature pollen grains of Brassica napus are shown to contain thr

132 Pollen grains of land plants have evolved remarkably str

133 Pollen grains of Lilium longiflorum are a long-establish

134 ds of A. thaliana, principally in developing pollen grains of stage 9-11 anthers.

135 The vast majority of the pollen grains of these mutants were identical to wild ty

136 (designated LePro 1) encoding profilin from pollen grains of tomato (Lycopersicon esculentum Mill. c

137 enerated in vitro were exposed to O europaea pollen grains or lipids isolated from them.

138 channels have never been reported in either pollen grains or pollen tubes.

139 ube is a cellular protuberance formed by the pollen grain, or male gametophyte, in flowering plants.

140 As a major component of pollen grains, p-coumaric acid is ubiquitous in the natu

141 ubic meter (r(2) = 0.80, P < .001) than with pollen grains per cubic meter (r(2) = 0.61, P < .001).

142 The fluorescence of up to 80,000 pollen grains per individual plant can be measured in 10

143 We have recently developed pollen grains (PGs) as a unique method to deliver vaccin

144 ive promoters, localized in the cytoplasm of pollen grains, pollen tubes, and also root trichoblast c

145 on correlated with the occurrence of smaller pollen grains, poor pollen germination, and shorter poll

146 To survive this process, pollen grains possess a variety of physiological and str

147 e report the discovery of a number of fossil pollen grains preserved in dinosaur-bearing deposits fro

148 Pollen grains protect the sperm cells inside them with t

149 ovule oversupply increases the proportion of pollen grains received that are used to fertilize ovules

150 Ragweed pollen grains release subpollen particles (SPP) of respi

151 Production of functional pollen grains relies significantly on deterioration and

152 netic background, male meiotic products--the pollen grains--remain physically attached thereby facili

153 Moreover, numerous pollen grains showed two tips emerging instead of one in

154 constitutively active NtRac1 in transformed pollen grains significantly increases the ratio of phosp

155 identified a mutant, raring-to-go, in which pollen grains stained for callose before anther dehiscen

156 this tissue in the quality and production of pollen grains, studies on promoter gene regulation of ta

157 From micrometer-sized pollen grains that can easily stick to hairy insects for

158 Stamens produce pollen grains that contain male gametes, while the carpe

159 ibility in Brassica entails the rejection of pollen grains that express specificities held in common

160 f pollination in Arabidopsis: the binding of pollen grains to female stigma cells.

161 ut the contribution of other constituents in pollen grains to this process is unknown.

162 folded structures from intestinal villi and pollen grains to wrinkled membranes and programmable met

163 dopsis T-DNA mutant in which anthers release pollen grains too late for pollination to occur.

164 principles explain how wall structure guides pollen grains toward distinct folding pathways.

165 Pollen grains undergo dramatic changes in cellular water

166 ty acids, and triacylglycerols isolated from pollen grains upregulate CD1d.

167 qualitative pollen analysis by counting 500 pollen grains using harmonised methods of melissopalynol

168 tative nucleus is positioned adjacent to the pollen grain wall, separate from the two sperm cells, wh

169 mutants, the intact MGU is displaced to the pollen grain wall.

170 Many pollen grains were collapsed and inviable in the gsl1-1/

171 Mature pollen grains were collected from ragweed plants grown a

172 The resulting pollen grains were either shrunken or contained two nucl

173 Mature pollen grains were much smaller than wild-type pollen gr

174 of the intine wall during maturation of the pollen grain, which, in turn, influences pollen grain ge

175 unreduced 'big' (2n=4x) and 'jumbo' (4n=8x) pollen grains, which were clearly distinguished by size.

176 function appears to nurture and decorate the pollen grains with critical surface molecules.

177 minal portion of the protein and tags mutant pollen grains with the beta-glucuronidase reporter.

178 od reveals that LePro 1 is expressed only in pollen grains, with undetectable transcription in other

179 CCRC-M1 does label pollen grains within anthers and pollen tube walls.

180 Sperm in pollen grains within anthers continue to synthesize DNA,

181 ances thousands of times the diameter of the pollen grain without cell division, thus representing an

182 rgy syndrome due to increasing allergic tree pollen grains would be appeared.