ライフサイエンスコーパス: ovule

1 edded in specialized sporophytic structures (ovules).

2 ete precursors from sporophytic cells in the ovule.

3 y cells located in the abaxial region of the ovule.

4 vents multiple pollen tubes from entering an ovule.

5 g pathways for the correct patterning of the ovule.

6 arity and directing pollen growth toward the ovule.

7 initiated at the base (chalazal end) of each ovule.

8 efore being consumed in the production of an ovule.

9 that are carried within a pollen tube to an ovule.

10 pollen tube cell and the sperm cells to the ovule.

11 owth, and delivery of the sperm cells to the ovule.

12 showed embryo sac-specific expression in the ovule.

13 cell (MMC), a single cell in the premeiotic ovule.

14 attraction of the growing pollen tube to the ovule.

15 he angiosperm carpel and anatropous bitegmic ovule.

16 ced, resulting in homeotic transformation of ovules.

17 expression along the funiculi of the primary ovules.

18 o apical and internal tissues, including the ovules.

19 KD plants produced small fruits with aborted ovules.

20 efore mitosis 3, resulting in 45% of sterile ovules.

21 with the predominant NbSACPD-C expression in ovules.

22 e promoting carpelloid traits in transformed ovules.

23 success by distributing pollen tubes to all ovules.

24 bes failed to enter the micropyle of excised ovules.

25 oductive tract as they seek out unfertilized ovules.

26 g tract, but the tubes failed to turn toward ovules.

27 (>90%) still failed to locate and fertilize ovules.

28 genes exhibiting reduced expression in dif1 ovules.

29 el walls of the gynoecium, which enclose the ovules.

30 quired for efficient pollen tube guidance to ovules.

31 ubes through the pistil tissues to reach the ovules.

32 ead of the two integuments seen in wild-type ovules.

33 and pollen tubes and at much lower levels in ovules.

34 tems, and in developing stamens, carpels and ovules.

35 to fertilize the female gametophytes inside ovules.

36 In the context of the ovule, 11 genes were expressed exclusively in the antipo

37 We hypothesize that in wild-type ovules a physical interaction between ATS and ETT allows

38 VN) and the SCs migrate as a unit toward the ovules, a fundamental but barely understood process.

39 reach the ovary and in most cases penetrate ovules, a phenomenon called late-acting self-incompatibi

40 Nearly 90% of the ovules aborted when roots were incubated for 12 h in a h

41 less cultivars suggested a potential role in ovule abortion associated with seedlessness.

42 translation in mitochondria often results in ovule abortion before and immediately after fertilizatio

43 ed, the minimum inductive treatment to cause ovule abortion could be determined.

44 terozygous mcm7 mutants resulted in frequent ovule abortion, a phenotype that does not occur in other

45 llen viability, reduced filament elongation, ovule abortion, and failure of flowers to open.

46 In ovules, ACC stimulates transient Ca(2+) elevation, and C

47 o the ovules is a potential barrier point to ovule access and waste by inappropriate mates.

48 ed and display small curled leaves, aberrant ovules, altered epidermal cells and reduced numbers of l

49 d some were able to germinate and target the ovules, although the embryos aborted shortly after ferti

50 suggest that common mechanisms may regulate ovule and anther development.

51 istem indeterminancy, and development of the ovule and seed coat.

52 ides the first evidence for a role of GAs in ovule and seed development.

53 CK (STK), a transcription factor controlling ovule and seed integument identity, directly regulates P

54 In the context of the ovule and seed, AGL61 is expressed exclusively in the ce

55 Within the ovule and seed, FEM111/AGL80 is expressed exclusively in

56 CMM) and its derivative tissues, such as the ovule and the septum, resulting in a split gynoecium and

57 ly regulates AGO9 and RDR6 expression in the ovule and therefore indirectly regulates SPL/NZZ express

58 ering plants, diploid sporophytic tissues in ovules and anthers support meiosis and subsequent haploi

59 expression of these genes in domains of both ovules and anthers where miR167 was normally present.

60 f gene expression, and for fertility of both ovules and anthers.

61 lar tissues and placenta surface, and in the ovules and developing seed.

62 everal studies have proposed that fertilized ovules and developing seeds initiate signaling cascades

63 in stamen, and in the chalazal seed coat of ovules and developing seeds.

64 These pollen tubes targeted ovules and fertilized either the egg or the central cell

65 so expressed in vascular tissues, developing ovules and stamens, and in the embryo.

66 he whole pistil, while GID1B is expressed in ovules, and GID1C is expressed in valves.

67 al domain of the gynoecium gives rise to the ovules, and several other structures critical for reprod

68 ing mechanism that determines the spacing of ovule anlagen within the placenta remained unexplored.

69 Expression in the inner integument of the ovule appears to be an ancient expression pattern corres

70 Ovules are essential for sexual plant reproduction and s

71 Ovules are initiated in a highly regular pattern along t

72 We found that hua-pep ovules are morphologically sepaloid and show ectopic exp

73 volves pattern formation, which ensures that ovules are regularly arranged in the pistils to reduce c

74 Ovules are the female reproductive structures that devel

75 ve hap2(gcs1) or duo1 sperm are delivered to ovules, as many as three additional pollen tubes are att

76 iosis while being up-regulated in apomeiotic ovules at the same stage of development in plants of the

77 Cooperation between ovule attraction and pollen tube growth acceleration fav

78 enetically identical to somatic cells of the ovule because they are products of mitosis, not of meios

79 in the zygote-embryo transition) and failed ovules (because of a moderate defect in female gametophy

80 illustrates the importance of growth of the ovule before fertilization in determining final size of

81 These loci are expressed in ovules before fertilization and in the seed coat, embryo

82 In mom1-3 ovules, both SUF4 and EC1 genes are down-regulated, and

83 are transported through floral tissues to an ovule by a pollen tube, a highly polarized cellular exte

84 ants, two immotile sperm are delivered to an ovule by a pollen tube.

85 s precise delivery of the sperm cells to the ovule by a pollen tube.

86 brassinosteroid (BR) biosynthesis in cotton ovules by treatment with brassinazole inhibits fiber for

87 zygous fie mutants, an endosperm develops in ovules carrying a maternal fie allele without fertilizat

88 al identity of the AI cell relative to other ovule cell types is unclear.

89 our nuclei, and random groups of sporophytic ovule cells not undergoing these events were collected b

90 The sporophytic ovule cells were enriched in signaling functions.

91 Angiosperm ovules consist of three proximal-distal domains - the nu

92 g plants, the embryo sac embedded within the ovule contains the egg cell, whereas the pollen grain co

93 ngation by the application of GA to cultured ovules corresponds with increased expression of genes th

94 on fiber cell development in immature cotton ovules cultured in vitro.

95 ecotypes, and abnormal gamete precursors in ovules defective for RDR6 share identity with ectopic ga

96 Regular spacing of ovules depends on EPFL2 expression in the carpel wall an

97 y increases in pace with pollination-induced ovule development and is localized in ovule primordia.

98 apping expression pattern during Arabidopsis ovule development and loss of either gene resulted in co

99 volutionary model with pollination-triggered ovule development and megasporogenesis, a modified embry

100 Furthermore, arrested ovule development and significantly altered lipid compos

101 however, the roles of auxin and cytokinin in ovule development are largely unknown.

102 ttern in inner integuments in early steps of ovule development as well as in the funiculus, embryo, a

103 The ovule development defect was fully complemented by coexp

104 le maintaining membrane lipid composition in ovule development for female fertility in N. benthamiana

105 tative orthologs of the Arabidopsis thaliana ovule development gene INNER NO OUTER (INO) has enabled

106 Ovule development in Arabidopsis thaliana involves patte

107 rofiling of these genes during the course of ovule development in seeded and seedless cultivars sugge

108 anding of the molecular mechanisms governing ovule development is far from complete.

109 Here, we report that ovule development is sensitive to the level of Ribosomal

110 ment of both activities to coordinate proper ovule development strongly argues that the ATS-DELLA com

111 this article shows that cytokinin regulates ovule development through the regulation of PIN1.

112 STA SHAPE (ATS, or KAN4) is necessary during ovule development to maintain the boundary between the t

113 ecium morphogenesis, lateral root emergence, ovule development, and primary branch formation.

114 Z, previously described as key regulators of ovule development, are needed for the auxin and cytokini

115 es the effects of the HD-ZIPIII mutations on ovule development, implicating ectopic WUS expression as

116 sed adaxially in the inner integument during ovule development, independent of ABERRANT TESTA SHAPE (

117 in mediating floral meristem determinacy and ovule development, respectively, in Dendrobium spp. orch

118 During ovule development, sexual reproduction initiates with me

119 re, we demonstrate the implication of GAs in ovule development.

120 ot formation, delayed flowering and abnormal ovule development.

121 ns between sporophyte and gametophyte during ovule development.

122 rity were expressed during early Arabidopsis ovule development.

123 an formation during embryo, leaf, carpel and ovule development.

124 genes were proposed to play a unique role in ovule development.

125 nd cytokinin receptors, are expressed during ovule development.

126 that polarity determinants play key roles in ovule development.

127 vision in the integument specifically during ovule development.

128 encodes a homeodomain protein that regulates ovule development.

129 t sites have defective anther dehiscence and ovule development.

130 na, MPK3 and MPK6, share a novel function in ovule development: in the MPK6 mutant background, MPK3 i

131 c features, which may be associated with the ovule developmental program common to both organs.

132 nt of the Arabidopsis (Arabidopsis thaliana) ovule develops asymmetrically, with growth and cell divi

133 However, unpollinated lre-5/lre-5 ovules did not initiate autonomous endosperm development

134 expansion, carpel elongation, and anther and ovule differentiation.

135 Morphological transitions associated with ovule diversification provide unique opportunities for s

136 In the plants that made ovules, ectopic PFS2 expression blocked megaspore mother

137 A sin2 insertional allele has ovule effects similar to sin2-1, but more pronounced ple

138 that HD2A, HD2B, and HD2C were expressed in ovules, embryos, shoot apical meristems, and primary lea

139 ads to a striking phenotype in which ectopic ovules emerge from nodes of ectopic WUS expression along

140 ely determined by the growth of the maternal ovule, endosperm, and embryo.

141 ose transcripts are down-regulated in sexual ovules entering meiosis while being up-regulated in apom

142 in vitro, they failed to fertilize wild-type ovules even in the absence of competing wild-type pollen

143 lAOC-RNAi lines with strongly reduced AOC in ovules exhibited reduced seed set similarly to the jai1

144 In ovules, expression in integument tissues was much higher

145 occurring primarily along the region of the ovule facing the base of the gynoecium (gynobasal).

146 ow that the hap2 sperm that are delivered to ovules fail to initiate fertilization.

147 pollen reaches stigmas links pollination to ovule fertilisation, governing subsequent siring success

148 Following successful pollination and ovule fertilization, heat-stress modified PsACS and PsAC

149 Invasive species produced 3x fewer ovules/flower and >250x more flowers per plant, compared

150 s a pollen tube that carries the sperm to an ovule for fertilization.

151 ransmitting tract (TT) and are guided to the ovule for fertilization.

152 uctive tissues to deliver sperm cells to the ovules for fertilization.

153 precise regulation to deliver sperm cells to ovules for fertilization.

154 opulation-level measurements of Genomosperma ovules for quantitative analysis.

155 vents ectopic expression of class-A genes in ovules for their proper morphogenesis, evoking the class

156 s players in the evolution of the unbranched ovule form in extant angiosperms.

157 le in ovule primordia initiation, inhibiting ovule formation in both Arabidopsis and tomato.

158 ificant transport of Cys into the developing ovule from the mother plant.

159 vital meristematic structure that generates ovules from the medial domain of the gynoecium, the fema

160 Therefore, in ovules, GA perception is mediated by GID1A and GID1B, wh

161 red with those expressed in prefertilization ovules, germinating seedlings, and leaves, roots, stems,

162 Texas Marker-1 (TM-1) immature ovules (GH_TMO).

163 a1 mutants are semisterile and show aberrant ovule growth, whereas double eif4a1 eif4a2 homozygous mu

164 We show that an oversupply of ovules has two opposing influences on pollen limitation

165 is demonstrates that the mpk3(+/-) mpk6(-/-) ovules have abnormal integument development with arreste

166 ied, and genes controlling the initiation of ovules have been identified.

167 We show that the ovule identity gene, SEEDSTICK, directly regulates AGO9

168 In Arabidopsis, ovule identity is determined by homeotic MADS-domain pro

169 VAL) and VERDANDI (VDD), both targets of the ovule identity MADS-box complex SEEDSTICK-SEPALLATA3, in

170 tants reduced homeotic conversions, rescuing ovule identity while promoting carpelloid traits in tran

171 s FBP7 and FBP11 are not essential to confer ovule identity.

172 ntained normal seeds and remnants of aborted ovules in a 1:1 ratio.

173 division in the leaf, the gynoecium and the ovules in A. fimbriata.

174 etophyte (egg) competition within individual ovules in addition to male gametophyte (sperm) competiti

175 Here, we demonstrate that stigma, style, and ovules in Arabidopsis pistils stimulate pollen germinati

176 locus analysis, we found that the spacing of ovules in the developing gynoecium and fruits is control

177 Angiosperm ovules include one, or more commonly two, integuments th

178 e LPRi epialleles revealed many unfertilized ovules, increased numbers of aborted seeds, and decrease

179 enta mutants resulting in a complete loss of ovule initiation and a reduction of the structures deriv

180 that BRs also participate in the control of ovule initiation in tomato, by promoting an increase on

181 -regulation by GAs and BRs of the control of ovule initiation indicate that two different mechanisms

182 evelopmental stages that immediately proceed ovule initiation, the earliest stages of seed developmen

183 ion mutant has reduced seed set due to outer ovule integument development arrest, leading to female s

184 onse regulators, act as positive factors for ovule integument development in a mechanism that involve

185 er (HD-ZIPIII) genes leads to aberrations in ovule integument development.

186 tor could transmit to leaves, roots, and the ovule integument from which fibers originate.

187 ent to maintain the boundary between the two ovule integuments and to promote inner integument growth

188 As a result, ovule integuments had arrested growth, and anthers grew

189 wth of the male gametophytes and pollen tube-ovule interaction.

190 sed by the paracrine RALF34 peptide from the ovule interfering with this signaling pathway.

191 , a single somatic, sub-epidermal cell in an ovule is selected to differentiate into a megaspore moth

192 e step taken by pollen tubes en route to the ovules is a potential barrier point to ovule access and

193 ditionally, over-expression of PHB or PHV in ovules is not sufficient to repress ATS expression, and

194 ing to apomixis initiation in Hieracium spp. ovules is scarce and the functional identity of the AI c

195 opsis female gametophyte in the unfertilized ovule, leading to multinucleate central cells at high fr

196 failure is caused by aberrant development of ovules, leading to gamete degeneration.

197 on in the integuments surrounding mnt mutant ovules, leading to the formation of enlarged seed coats.

198 valuate the hypothesis that an oversupply of ovules leads to increased pollen limitation.

199 found that AGL6-like genes are expressed in ovules, lodicules (second whorl floral organs), paleas (

200 In ovules, LORELEI is expressed during pollen tube receptio

201 In wild-type ovules, MMC differentiation requires SPOROCYTELESS/NOZZL

202 ide an unique sensitized background to study ovule morphogenesis when C- and D-functions are simultan

203 S expression to the nucellus and maintaining ovule morphology.

204 In the context of the ovule, MYB98 is expressed exclusively in the synergid ce

205 growth is stunted, limiting fertilisation to ovules nearest the stigma.

206 st, in Arabidopsis both GAs and BRs regulate ovule number independently of the activity levels of the

207 BRs regulate ovule number through the downregulation of GA biosynthes

208 (AtHEMN1) adversely affects silique length, ovule number, and seed set.

209 pollen grains/anther, pollen viability, and ovule number.

210 at all four meiotically derived cells in the ovule of Arabidopsis are competent to differentiate into

211 n the inner, sexual whorl, within developing ovules of female flowers and anther primordia of male fl

212 se, CitRWP, is expressed at higher levels in ovules of polyembryonic cultivars.

213 est growth and to rupture after entering the ovules of quintuple loss-of-function EN mutants, indicat

214 In this study, three cDNA libraries from ovules of radish before and after fertilization were seq

215 As showed overall a higher representation in ovules of sexual plants at late premeiosis.

216 Ovules of the haploinsufficient er-105 erl1-2 erl2-1/+ m

217 The branching ovules of the mutant resemble those of some fossil gymno

218 mote fiber elongation in cultured fertilized ovules of the upland cotton variety Coker 312.

219 and genetic mapping was taken to compare the ovules of the Xuzhou 142 wild type (WT) with its fuzzles

220 Moreover, the central tissue within the ovules of Trimenia, through which the embryo sacs grow,

221 these lines rules out alternatives involving ovule or seed mortality and points to a truly meiotic me

222 gynoecia and fruits and irregular spacing of ovules or even ovule twinning.

223 where, following fertilization, cells of the ovule outer integument differentiate into a unique cell

224 As a result of these opposing influences, ovule oversupply has only a modest effect on the degree

225 The ovule oversupply hypothesis states that, in response to

226 First, ovule oversupply increases the likelihood that pollen re

227 Second, ovule oversupply increases the proportion of pollen grai

228 Ovule oversupply is not the cause of the pollen limitati

229 Together, EPFL2 and EPFL9 help to coordinate ovule patterning and thereby seed number with gynoecium

230 Genes controlling ovule patterning have been identified and studied in det

231 analyses presented here, PFS2 affects either ovule patterning or differentiation.

232 a set of ERECTA-family receptors coordinate ovule patterning with fruit growth.

233 in developing ovules, which accounts for the ovule phenotype in pfs2 mutants.

234 ons recapitulated mARF6 and mARF8 anther and ovule phenotypes, indicating that MIR167a is the main mi

235 n grains received that are used to fertilize ovules ('pollen use efficiency').

236 h such features as short siliques with fewer ovules, pollen and seed sterility, altered Megaspore Mot

237 Ovule primordia formation is a complex developmental pro

238 ation in tomato, by promoting an increase on ovule primordia formation.

239 entical developmental processes even, as for ovule primordia initiation, if the same set of hormones

240 rellins (GAs) also play an important role in ovule primordia initiation, inhibiting ovule formation i

241 of DELLA proteins that will finally promote ovule primordia initiation.

242 itiation and regular, equidistant spacing of ovule primordia, which may serve to minimize competition

243 icted ARF3 expression to the medio domain of ovule primordia.

244 nduced ovule development and is localized in ovule primordia.

245 The pattern of ovule production in Impatiens requires the meristem to b

246 elivery of more than one pair of sperm to an ovule, provides a means of salvaging fertilization in ov

247 ypes, including those comprising Arabidopsis ovules, replums and stamen abscission zones.

248 erpretations, including the possibility that ovules represent meristematic axes with their own type o

249 evation, and Ca(2+) influx in octuple mutant ovules rescues LURE1.2 secretion.

250 B-RGL2 interactions only occur in valves and ovules, respectively.

251 down-regulation of SUF4 in homozygous suf4-1 ovules results in reduced EC1 expression and delayed spe

252 We hybridized ovule RNA probes with Affymetrix ATH1 genome arrays and

253 he vegetative cell, but it is also active in ovules, roots, and guard cells.

254 functioning of the pollination drop, a vital ovule secretion at the pollination stage.

255 histochemical techniques were used to study ovule/seed development and germination of Austrobaileya.

256 Genomosperma ovules show significant variation in integumentary lobe

257 understood upstream regulation of SPL/NZZ in ovules, showing that the RdDM pathway is important to re

258 pression in the carpel wall and in the inter-ovule spaces, where it acts through ERL1 and ERL2.

259 hed seed formation in jai1 together with the ovule-specific accumulation of the JA biosynthesis enzym

260 f extant angiosperms, one event produced the ovule-specific D lineage and the well-characterized C li

261 for male gametophyte development, as well as ovule specification and function.

262 -1 function in sporophytic tissues to affect ovule structure and impede embryo sac development, there

263 pecific marker is absent in the multiple ahk ovules, suggesting that disruption of cytokinin signalin

264 th in vitro or in the pistil, but it reduces ovule targeting by twofold.

265 transmitting tract cells before reaching its ovule targets.

266 availability, plants evolve to produce more ovules than they expect to be fertilized, and that this

267 ood that pollen receipt limits the number of ovules that can be fertilized ('prezygotic pollen limita

268 ovides a means of salvaging fertilization in ovules that have received defective sperm, and ensures m

269 The lre-5/lre-5 ovules that remain undeveloped due to defective pollen t

270 male gametes, while the carpels contain the ovules that when fertilized will produce the seeds.

271 After targeting an ovule, the pollen tube bursts, releasing two sperm that

272 t tubes appeared to grow far enough to reach ovules, the vast majority (>90%) still failed to locate

273 mitosis up to pollen tube penetration in the ovule, thereby revealing the dynamics of vacuole morphol

274 oth auxin distribution and patterning of the ovule; this process required the homeodomain transcripti

275 which nonmotile sperm cells are delivered to ovules, thus allowing fertilization to occur.

276 ial domain-derived structures, including the ovules, thus validating our approach.

277 e embryo sac is embedded within the maternal ovule tissue, we have utilized the Arabidopsis (Arabidop

278 ne expression profile analysis of Li1 mutant ovule tissues, the gene remains uncloned and the underly

279 previously published microarray data of Li1 ovule tissues.

280 rted and delivered by the pollen tube to the ovule to achieve double fertilization.

281 acting synergid cells persists, enabling the ovule to attract more pollen tubes for successful fertil

282 ident bursting of the pollen tube inside the ovule to release the sperm.

283 s and multiple sets of sperm within a single ovule to show that Arabidopsis efficiently prevents mult

284 ormation and promotes homeotic conversion of ovules to carpels when ectopically expressed in flowers,

285 rains often arrive on stigmas than there are ovules to fertilize, resulting in pollen competition.

286 Comparative analysis of the ovule transcriptomes of Li1 and WT reveals that a number

287 Pollen tube arrival at the ovule triggers the accumulation of nitric oxide at the f

288 nearly all pollen tubes failed to reach the ovules; tube growth was arrested at the apex of the ovar

289 uits and irregular spacing of ovules or even ovule twinning.

290 stricted to the gynobasal side of developing ovules via negative regulation by the transcription fact

291 n homozygous-heterozygous plants, 50% of the ovules were arrested at different stages according to th

292 growth to deliver two nonmotile sperm to the ovule where they fuse with an egg and central cell to ac

293 long distances through the carpel toward the ovules, where double fertilization is executed.

294 in signaling localized in the chalaza of the ovule, which is enhanced by the asymmetric localization

295 transcripts were most abundant in developing ovules, which accounts for the ovule phenotype in pfs2 m

296 expression in determinant infertile1 (dif1) ovules, which lack female gametophytes.

297 ort integuments 2-1 (sin2-1) mutant produces ovules with short integuments due to early cessation of

298 ty of different floral tissues to access the ovules within the pistil.

299 thaliana) mutant sporocyteless that produces ovules without embryo sacs, together with the ATH1 Arabi

300 nting multiple pollen tubes from entering an ovule would ensure that only two sperm are delivered to