ライフサイエンスコーパス: ovule

1 edded in specialized sporophytic structures (ovules).

2 vents multiple pollen tubes from entering an ovule.

3 g pathways for the correct patterning of the ovule.

4 arity and directing pollen growth toward the ovule.

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

6 efore being consumed in the production of an ovule.

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

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

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

10 he angiosperm carpel and anatropous bitegmic ovule.

11 showed embryo sac-specific expression in the ovule.

12 ces along a complex path to the unfertilized ovule.

13 cellular matrices (ECM) of the pistil to the ovule.

14 limited extent from the adaxial side of the ovule.

15 in patterning and growth of the Arabidopsis ovule.

16 he proper delivery of the sperm cells to the ovule.

17 ete precursors from sporophytic cells in the ovule.

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

19 success by distributing pollen tubes to all ovules.

20 bes failed to enter the micropyle of excised ovules.

21 oductive tract as they seek out unfertilized ovules.

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

23 (>90%) still failed to locate and fertilize ovules.

24 genes exhibiting reduced expression in dif1 ovules.

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

26 quired for efficient pollen tube guidance to ovules.

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

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

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

30 d developing outer integument in Arabidopsis ovules.

31 containing aborted embryos and unfertilized ovules.

32 ntially full promoter activity in pollen and ovules.

33 ma to the ovary for fertilization inside the ovules.

34 erved in pollen, elongating pollen tubes and ovules.

35 insight into TUB9 transcript accumulation in ovules.

36 of effects of hll mutations to gynoecia and ovules.

37 d a basal ovary that contains the developing ovules.

38 xpression was observed upon fertilization of ovules.

39 expression along the funiculi of the primary ovules.

40 o apical and internal tissues, including the ovules.

41 KD plants produced small fruits with aborted ovules.

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

43 with the predominant NbSACPD-C expression in ovules.

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

45 the proportion of diplosporous (vs meiotic) ovules (41-89%) in tetraploid F1s despite the presumed e

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

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

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

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

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

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

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

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

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

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

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

57 ng integument development of the Arabidopsis ovule and also has subtle pleiotropic effects on both se

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

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

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

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

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

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

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

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

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

67 In angiosperm ovules and anthers, the hypodermal cell layer provides t

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

69 ers, with transcripts detected in developing ovules and anthers.

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

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

72 nsformants were obtained and GUS staining of ovules and embryo sacs was observed only if the Agrobact

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

74 ene which is expressed in Gossypium hirsutum ovules and has some homology to MIXTA, was also overexpr

75 umulated to the highest levels in developing ovules and microspores.

76 RINKLY4 encodes a functional kinase that, in ovules and possibly other tissues, is abundant in anticl

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

78 al plant reproduction because they house the ovules and subsequently develop into fruits that protect

79 h pollen sterile, the hybrids produce viable ovules and were used as female parent in backcrosses to

80 The mRNA was detected in floral meristems, ovules, and early embryos, consistent with the mutant ph

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

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

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

84 After the ovules are fertilized, the fruit elongates and different

85 will develop to a normal size only when the ovules are present and fertilized.

86 Ovules are the female reproductive structures that devel

87 Our results suggest that ovules are the site of productive transformation in the

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

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

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

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

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

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

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

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

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

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

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

99 The expression of the reporter genes in ovules ceased at the time of fertilization.

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

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

102 The sporophytic ovule cells were enriched in signaling functions.

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

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

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

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

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

108 has been shown previously to be involved in ovule development and in the initiation and growth of fl

109 egulates cell division in integuments during ovule development and is necessary for floral organ grow

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

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

112 Furthermore, arrested ovule development and significantly altered lipid compos

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

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

115 er and shape, as well as aberrant embryo and ovule development associated with pinhead mutants, thus

116 The ovule development defect was fully complemented by coexp

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

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

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

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

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

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

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

124 2, LIP genes play a role in sepal, petal and ovule development, although some of their detailed effec

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

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

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

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

129 During ovule development, sexual reproduction initiates with me

130 nd cytokinin receptors, are expressed during ovule development.

131 that polarity determinants play key roles in ovule development.

132 vision in the integument specifically during ovule development.

133 encodes a homeodomain protein that regulates ovule development.

134 d that SYD is required for proper carpel and ovule development.

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

136 ot formation, delayed flowering and abnormal ovule development.

137 ns between sporophyte and gametophyte during ovule development.

138 rity were expressed during early Arabidopsis ovule development.

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

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

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

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

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

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

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

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

147 ration in stamen and carpel primordia and in ovules during flower development.

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

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

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

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

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

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

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

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

156 The outer integument of Arabidopsis ovules exhibits marked polarity in its development, grow

157 In ovules, expression in integument tissues was much higher

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

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

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

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

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

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

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

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

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

167 viewed as an elaborate barrier that shields ovules from access from inappropriate pollen, such as po

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

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

170 ng sin2, we postulate a relationship between ovule genes and the evolutionary origin of some processe

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

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

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

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

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

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

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

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

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

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

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

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

183 aintenance of polarity in other parts of ino ovules indicates the existence of additional regulators

184 owed strong expression in tobacco pollen and ovules indistinguishable from that directed by ACT1.

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

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

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

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

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

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

191 during the development of sepal margins and ovule integument outgrowth.

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

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

194 and organ primordia, including those of the ovule integuments.

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

196 ators and provides further evidence that the ovule is a compound structure.

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

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

199 her postzygotic rejection of self-fertilized ovules is due to late-acting self-incompatibility or to

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

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

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

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

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

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

206 In ovules, LORELEI is expressed during pollen tube receptio

207 d proliferates, expressing both meristem and ovule marker genes.

208 opment, including flowering time control and ovule morphogenesis.

209 S expression to the nucellus and maintaining ovule morphology.

210 leiotropic effects observed in a majority of ovule mutants, including sin2, we postulate a relationsh

211 Genetic interactions between sin2 and other ovule mutations show that cell division, directionality

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

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

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

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

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

217 as documented for 10 of 40 genes examined in ovules of Gossypium hirsutum.

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

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

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

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

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

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

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

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

226 s were strongly expressed in both pollen and ovules of tobacco and in the pollen of rice.

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

228 s frequencies of up to 6% were detected with ovules of unopened flowers 5-11 days post-infiltration.

229 The attachement of the ovules on the adaxial surface of a leaf-like megasporoph

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

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

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

233 The ovule oversupply hypothesis states that, in response to

234 First, ovule oversupply increases the likelihood that pollen re

235 Second, ovule oversupply increases the proportion of pollen grai

236 Ovule oversupply is not the cause of the pollen limitati

237 ing Agrobacterium transformation through the ovule pathway.

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

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

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

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

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

243 istem, each whorl of organ primordia, and in ovule primordia during wild-type flower development.

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

245 res functional redundancy with HUELLENLOS in ovule primordium outgrowth and proximal-distal patternin

246 stem initiates all organs correctly, but the ovule primordium, the terminal product of the floral mer

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

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

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

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

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

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

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

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

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

256 ematic in nature and give rise to placentas, ovules, septa, abaxial repla, and the majority of the st

257 unig aintegumenta fail to develop placentas, ovules, septa, stigma, and style.

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

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

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

261 -1 function in sporophytic tissues to affect ovule structure and impede embryo sac development, there

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

263 ably because they target ectopic GABA on the ovule surface.

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 are required for specifying the identity of ovules, the landmark invention during the course of vasc

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

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

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

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

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

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

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

280 previously published microarray data of Li1 ovule tissues.

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

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

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

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

289 ers, cultured in vitro with their associated ovules, were used to compare the effects of two herbicid

290 the mature pollen, growing pollen tubes, and ovules, whereas ACT2 is constitutively and strongly expr

291 ealed delivery of GUS activity to developing ovules, whereas no GUS staining of pollen or pollen tube

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

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

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

295 transmitting tract and the integument of the ovules, while the L2 and L3 contribute, to different deg

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

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

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

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

300 Some pop2 tubes continue to grow toward ovules, yet they are misguided, presumably because they