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Journal articles on the topic 'Pollen tubes growth'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Winsor, James A., and Andrew G. Stephenson. "Demographics of pollen tube growth in Cucurbita pepo." Canadian Journal of Botany 73, no. 4 (1995): 583–89. http://dx.doi.org/10.1139/b95-061.

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Pollen tube growth rates and pollen tube attrition were examined in Cucurbita pepo plants grown in an experimental garden. Two separate studies were performed utilizing controlled hand-pollinations. First, female flowers were hand-pollinated and collected at intervals over a 22-h period. Examination of stained pollen tubes in these pistils under reflected UV light revealed variation in growth rate: after approximately 7 h, the fastest growing pollen tubes grew at nearly twice the rate of the mass of the pollen tubes. The faster growing tubes reached the top of the ovary well ahead of most of t

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2

Anderson, J. M., and S. C. H. Barrett. "Pollen tube growth in tristylous Pontederia cordata (Pontederiaceae)." Canadian Journal of Botany 64, no. 11 (1986): 2602–7. http://dx.doi.org/10.1139/b86-344.

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Pollen tube growth rates in legitimate cross- and self-pollinations were compared by controlled hand pollination in two varieties of Pontederia cordata L. (Pontederiaceae). In each pollen–stigma combination pollen germinated readily on stigmas and pollen tubes penetrated stigmatic tissue. Pollen tube length in styles was positively correlated with pollen size. In most pollinations legitimate pollen tubes grew more rapidly in styles than self pollen tubes. This difference was statistically significant in most comparisons. Inhibition of incompatible pollen tubes was either in the style or ovary.

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3

Cecich, Robert A. "Notes: Pollen Tube Growth in Quercus." Forest Science 43, no. 1 (1997): 140–46. http://dx.doi.org/10.1093/forestscience/43.1.140.

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Abstract Fluorescence and brightfield microscopy were used to evaluate pollen tube growth in the Erythrobalanus and Lepidobalanus subgenera of the genus Quercus. All three species had the same pattern of pollen tube growth behavior, from the time pollen landed on the stigmas to the cessation of pollen tube elongation in mid-May. Pollen tubes grew from the apertures, penetrated the stigmatic epidermis, and produced a series of callose plugs as they advanced basipetally through the transmitting tissue of the styles. Pollen tubes grew through the solid transmitting tissue until they reached the l

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4

Śnieżko, Renata, and Krystyna Winiarczyk. "Pollen tube incompatibility reaction on the stigma in selfpollinated Sinapis alba L." Acta Societatis Botanicorum Poloniae 65, no. 1-2 (2014): 101–5. http://dx.doi.org/10.5586/asbp.1996.017.

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After selfpollination of <em>Sinapis alba</em> L. pollen tubes growth is inhibited on the stigma. The pollen grains germinate 3-4 hours after pollination. The pollen give rise to one or more pollen tubes. They grow along the papillae. In the place of contact between the papilla and pollen tube the pellicula is digested. Then the direction of pollen tube growth changes completely. Pollen tubes grow back on the exine of their own pollen grain, or turn into the air. The pollen tubes growth was inhibited in 6-8 hours after selfpollination. After crosspollination usually there is no inc

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5

McGee, Rebecca J., and James R. Baggett. "Unequal Growth Rate of Pollen Tubes from Normal and Stringless Pea Genotypes." HortScience 27, no. 7 (1992): 833–34. http://dx.doi.org/10.21273/hortsci.27.7.833.

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There was no difference in percentage in vitro germination of pollen from stringless pea (Pisum sativum L.) cv. Sugar Daddy and stringy `Oregon Sugarpod II' (OSP) and `OSU 705' (705). However, pollen tubes of `Sugar Daddy' grew more slowly in vitro than those of OSP or 705. Differences in pollen tube growth rate were demonstrated in vivo following time-course pollinations involving reciprocal crosses of `Sugar Daddy' with OSP and 705, along with the selfed parents. After 8 hours, pollen tubes from stringless peas (“stringless” pollen) had entered 13% of the ovules compared with 51% for those f

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6

Djordjevic, Milena, R. Cerovic, D. Nikolic, and Sanja Radicevic. "Unusual behavior of growing pollen tubes in the ovary of plum culture (Prunus domestica L.)." Archives of Biological Sciences 62, no. 1 (2010): 137–42. http://dx.doi.org/10.2298/abs1001137d.

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Unusual behavior of growing pollen tubes in different combinations of pollination was observed in the ovary of the plum (Prunus domestica L.) cv 'Cacanska Lepotica'. It primarily refers to several issues, i.e. the curling up of pollen tubes within the micropyle, the growth of two pollen tubes into the nucellus of an ovule, the occurrence of a bundle above the nucellar cap and fluorescence of the part of the embryo sac containing the egg apparatus. Upon the growth of pollen tubes into the nucellus of the ovule, subsequently penetrating pollen tubes form a bundle either above the micropyle entra

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7

Marquard, Robert D. "Pollen Tube Growth in Carya and Temporal Influence of Pollen Deposition on Fertilization Success in Pecan." Journal of the American Society for Horticultural Science 117, no. 2 (1992): 328–31. http://dx.doi.org/10.21273/jashs.117.2.328.

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In vivo pollen tube growth of pecan [Carya illinoinensis (Wangenh.) K. Koch] was estimated to be ≈ 150 μm·hour-1 from 3 to 8 hours postpollination. Pollen tubes averaged 47, 194, 405, and 946 μm after 2, 3, 4, and 8 hours postpollination, respectively. Pollen tube growth was strongly influenced by temperature, and in vitro studies demonstrated pollen germination and tube growth were optimal at 27C for `Cape Fear' pecan. In in vivo studies, tubes of cross-pollen did not grow significantly faster than tubes of self-pollen. Pollen tubes of water hickory [C. aquatica (Michx. f.) Nutt.] grew signif

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8

Lang, Gregory A., and E. James Parrie. "Pollen Viability and Vigor in Hybrid Southern Highbush Blueberries (Vaccinium corymbosum L. ×spp.)." HortScience 27, no. 5 (1992): 425–27. http://dx.doi.org/10.21273/hortsci.27.5.425.

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Pollen from six southern highbush blueberry cultivars derived from Vaccinium corymbosum L. and one or more other species (V. darrowi Camp, V. ashei Reade, and V. angustifolium Aiton) was incubated on nutrient agar to determine tetrad viability, pollen tube growth rates, and incidence of multiple pollen tube germinations. `Avonblue' pollen had a significantly lower tetrad germination percentage than `Georgiagem', `Flordablue', `Sharpblue', `Gulfcoast', or `O'Neal', all of which had >90% viable tetrads. The in vitro growth rate of `O'Neal' pollen tubes was significantly higher than the growth

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9

Gore, PL, BM Potts, PW Volker, and J. Megalos. "Unilateral Cross-Incompatibility in Eucalyptus: the Case of Hybridisation Between E. globulus and E. nitens." Australian Journal of Botany 38, no. 4 (1990): 383. http://dx.doi.org/10.1071/bt9900383.

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The growth of E. globulus and E. nitens pollen tubes in styles of E. globulus was examined in order to elucidate the site of the unilateral barrier to hybridisation. Pollen tubes of E. nitens failed to grow the full length of the larger E. globulus style. E. globulus pollen tubes grew an average of 1.4 mm per day for the first 4 days, compared with 0.8 mm per day for pollen tubes of E. nitens. From days 4 to 14, the growth of E. nitens pollen tubes slowed to an average of 0.2 mm per day and virtually no growth occurred after day 14. In contrast, E. globulus pollen tubes grew through the style

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10

Zhang, Ming Jun, Tian Yi Zhao, Xiu Ke Ouyang, Xin-Ying Zhao, Xinren Dai, and Xin-Qi Gao. "Pollen-specific gene SKU5-SIMILAR 13 enhances growth of pollen tubes in the transmitting tract in Arabidopsis." Journal of Experimental Botany 73, no. 3 (2021): 696–710. http://dx.doi.org/10.1093/jxb/erab448.

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Abstract Pollen tube growth and penetration in female tissues are essential for the transfer of sperm to the embryo sac during plant pollination. Despite its importance during pollination, little is known about the mechanisms that mediate pollen tube growth in female tissues. In this study, we identified an Arabidopsis thaliana pollen/pollen tube-specific gene, SKU5-SIMILAR 13 (SKS13), which was critical for the growth of pollen tubes in the transmitting tract. The SKS13 protein was distributed throughout the cytoplasm and pollen tube walls at the apical region. In comparison with wild-type po

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11

Reimann, Ronny, Delf Kah, Christoph Mark, et al. "Durotropic Growth of Pollen Tubes." Plant Physiology 183, no. 2 (2020): 558–69. http://dx.doi.org/10.1104/pp.19.01505.

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12

Obrien, SP. "Timetable of Stigmatic Receptivity and Development and Pollen Tube Growth in Chamelaucium uncinatum (Myrtaceae)." Australian Journal of Botany 44, no. 6 (1996): 649. http://dx.doi.org/10.1071/bt9960649.

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The stigma of Chamelaucium uncinatum Schauer is small and unreceptive at anthesis, but increases in size and becomes fully receptive 7 days after anthesis. After germination, pollen tubes grow intercellularly through the stigma and transmitting tissue of the style. Chamelaucium uncinatum has a single loculus containing six ovules with axile placentation. The transmitting tissue skews to one side within the ovary and the pollen tubes grow into the placenta via an invagination along one end of the loculus. Pollen tubes are smooth-walled in the transmitting tissue of the style and ovary, but with

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13

Palanivelu, Ravishankar, and Mark A. Johnson. "Functional genomics of pollen tube–pistil interactions in Arabidopsis." Biochemical Society Transactions 38, no. 2 (2010): 593–97. http://dx.doi.org/10.1042/bst0380593.

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The pollen tube represents an attractive model system for functional genomic analysis of the cell–cell interactions that mediate guided cellular growth. The pollen tube extends through pistil tissues and responds to guidance cues that direct the tube towards an ovule, where it releases sperm for fertilization. Pollen is readily isolated from anthers, where it is produced, and can be induced to produce a tube in vitro. Interestingly, pollen tube growth is significantly enhanced in pistils, and pollen tubes are rendered competent to respond to guidance cues after growth in a pistil. This potenti

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14

Yoder, Keith, Rongcai Yuan, Leon Combs, Ross Byers, Jim McFerson, and Tory Schmidt. "Effects of Temperature and the Combination of Liquid Lime Sulfur and Fish Oil on Pollen Germination, Pollen Tube Growth, and Fruit Set in Apples." HortScience 44, no. 5 (2009): 1277–83. http://dx.doi.org/10.21273/hortsci.44.5.1277.

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Effects of temperature and the combination of liquid lime sulfur (LLS) and fish oil (FO) applied during bloom on pollen germination and pollen tube growth in flowers and fruit set were examined in apples (Malus ×domestica Borkh.). Percent germination of pollen of ‘Manchurian’ crabapples and ‘Golden Delicious’ apple flowers on the stigmatic surface of ‘Golden Delicious’ pistils increased with increasing temperature from 13 to 29 °C in the first 24 and 48 h after pollination, respectively, but not thereafter. Pollen tube growth rate in the style increased quadratically with increasing temperatur

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15

Kandasamy, M. K., J. B. Nasrallah, and M. E. Nasrallah. "Pollen-pistil interactions and developmental regulation of pollen tube growth in Arabidopsis." Development 120, no. 12 (1994): 3405–18. http://dx.doi.org/10.1242/dev.120.12.3405.

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A developmental analysis of pollination responses in Arabidopsis implicates pollen as well as stigma maturation factors in the acquisition of reproductive function. In the anther, competence of pollen to germinate and to produce pollen tubes in situ occurred late in development. In the pistil, competence to support pollen germination and tube growth extended over a broad developmental window, and abundant as well as efficient pollen tube development was observed on pistils at anthesis and for a period of 1–2 days prior to flower opening. In contrast, pollen tube growth on immature pistils was

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16

Scheible, Nolan, and Andrew McCubbin. "Signaling in Pollen Tube Growth: Beyond the Tip of the Polarity Iceberg." Plants 8, no. 6 (2019): 156. http://dx.doi.org/10.3390/plants8060156.

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The coordinated growth of pollen tubes through floral tissues to deliver the sperm cells to the egg and facilitate fertilization is a highly regulated process critical to the Angiosperm life cycle. Studies suggest that the concerted action of a variety of signaling pathways underlies the rapid polarized tip growth exhibited by pollen tubes. Ca2+ and small GTPase-mediated pathways have emerged as major players in the regulation of pollen tube growth. Evidence suggests that these two signaling pathways not only integrate with one another but also with a variety of other important signaling event

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17

Hewitt, FR, T. Hough, P. O'Neill, JM Sasse, EG Williams, and KS Rowan. "Effect of Brassinolide and other Growth Regulators on the Germination and Growth of Pollen Tubes of Prunus avium using a Multiple Hanging-drop Assay." Functional Plant Biology 12, no. 2 (1985): 201. http://dx.doi.org/10.1071/pp9850201.

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A new multiple hanging-drop assay has been tested with a growth inhibitor, cycloheximide, and a growth-promoter, fusicoccin. This assay has been used to examine the growth-response of pollen-tubes of Prunus avium to brassinolide, a naturally occurring promoter of plant growth. This response is compared with that of indol-3-ylacetic acid, gibberellic acid, and kinetin. Pollen tubes responded to brassinolide and fusicoccin at 1 nM and above, a concentration one order of magnitude lower than that for indol-3-ylacetic acid and gibberellic acid. Kinetin did not stimulate growth of the pollen tubes.

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18

Baskorowati, Liliana. "POLLEN TUBES GROWTH FOLLOWING SELF- AND CROSSPOLLINATION IN Melaleuca alternifolia (Maiden & Betche) Cheel." JOURNAL OF FORESTRY 6, no. 2 (2009): 126–38. https://doi.org/10.20886/ijfr.2009.6.2.126-138.

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Pollen tubes growth following controlled self-and croos-polination of several individual of tress of melaleuca alternifolia was observed under fluorescence microscope. Two experiment during 2004 and 2005 flowering season were carried out at M. alternifolia seed orchard at West Wyalong , New South Wales (Australia). Pollen tubes number was investigated at 4 , 7 , 9 and 14 days after pollination by fluorescence microscope. Ovule peneration by pollen tubes was investigated 14 days after pollination. They varied greatly between self-and cross-pollen tubes in the style, with less pollen tube found

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19

Yang, Hanbing, Xiuqing Wei, Lifeng Wang, et al. "Functional Characterization of PeVLN4 Involved in Regulating Pollen Tube Growth from Passion Fruit." International Journal of Molecular Sciences 26, no. 5 (2025): 2348. https://doi.org/10.3390/ijms26052348.

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Passion fruit (Passiflora edulis), mainly distributed in tropical and subtropical regions, is popular for its unique flavor and health benefits. The actin cytoskeleton plays a crucial role in plant growth and development, and villin is a key regulator of actin dynamics. However, the mechanism underlying the actin filament regulation of reproductive development in passion fruit remains poorly understood. Here, we characterized a villin isovariant in passion fruit, Passiflora edulis VLN4 (PeVLN4), highly and preferentially expressed in pollen. Subcellular localization analysis showed that PeVLN4

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Zhang, Shujuan, Chunbo Wang, Min Xie, Jinyu Liu, Zhe Kong, and Hui Su. "Actin Bundles in The Pollen Tube." International Journal of Molecular Sciences 19, no. 12 (2018): 3710. http://dx.doi.org/10.3390/ijms19123710.

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The angiosperm pollen tube delivers two sperm cells into the embryo sac through a unique growth strategy, named tip growth, to accomplish fertilization. A great deal of experiments have demonstrated that actin bundles play a pivotal role in pollen tube tip growth. There are two distinct actin bundle populations in pollen tubes: the long, rather thick actin bundles in the shank and the short, highly dynamic bundles near the apex. With the development of imaging techniques over the last decade, great breakthroughs have been made in understanding the function of actin bundles in pollen tubes, esp

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21

Nyomora, A. M. S., P. H. Brown, K. Pinney, and V. S. Polito. "Foliar Application of Boron to Almond Trees Affects Pollen Quality." Journal of the American Society for Horticultural Science 125, no. 2 (2000): 265–70. http://dx.doi.org/10.21273/jashs.125.2.265.

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The effect of boron (B) on in vivo and in vitro development of almond [Prunus dulcis (Mill.) D.A. Webb (syn. P. amygdalus Batsch)] pollen and pollen tubes and the resultant effect on fruit set was studied in mature trees. The cultivars Mono (pistil donor) and Butte (pollinizer) in an orchard with low soil B in Fresno, California were sprayed with B at 0, 0.8, 1.7, or 2.5 kg·ha-1 during Fall 1993. Pollen viability as indicated by the fluorescein diacetate method (FDA) was >85% and was not affected by field-applied B, however, in vivo pollen germination and tube growth were enhanced by foliar

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Kahn, Tracy L., and Darleen A. DeMason. "Citrus pollen tube development in cross-compatible gynoecia, self-incompatible gynoecia, and in vitro." Canadian Journal of Botany 66, no. 12 (1988): 2527–32. http://dx.doi.org/10.1139/b88-344.

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The route of 'Orlando' tangelo (Citrus paradisi Macf. × C. reticulata Blanco) pollen tubes was traced and compared in self-incompatible pollinations and cross-compatible pollinations with 'Dancy' tangerine (C. reticulata Blanco). In both crosses, 'Orlando' pollen germinated in the stigmatic exudate and grew between the papillae on the stigma surface and inter-cellularly between the parenchymatous cells until reaching a stylar canal by 3 days. However, in the incompatible pollination, irregular deposition of callose occurred in the pollen tube walls as early as 1 day after pollination. By day 6

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Sitch, L. A., and G. O. Romero. "Attempts to overcome prefertilization incompatibility in interspecific and intergeneric crosses involving Oryza sativa L." Genome 33, no. 3 (1990): 321–27. http://dx.doi.org/10.1139/g90-050.

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The wild relatives of rice are a valuable source of desirable agronomic traits, but prefertilization barriers operate in crosses of Oryza sativa L. with the wild Oryza species and related genera. Pollen germination was normal in crosses with O. brachyantha, O. eichingeri, O. officinalis, and O. ridleyi and slightly inhibited in crosses with Rhynchoryza subulata. Stigmal penetration of O. brachyantha and R. subulata pollen tubes was inhibited, while O. ridleyi pollen tubes showed both incompatible and weakly compatible reactions. Pollen tubes of O. eichingeri, O. officinalis, and O. ridleyi pen

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Reed, Sandra M. "Pollination Biology of Hydrangea macrophylla." HortScience 40, no. 2 (2005): 335–38. http://dx.doi.org/10.21273/hortsci.40.2.335.

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Little information is available on the reproductive behavior of Hydrangea macrophylla (Thunb. Ex J.A. Murr.) Ser. The objectives of this study were to investigate time of stigma receptivity, viability of pollen from sterile flowers, and self-incompatibility in this popular ornamental shrub. Pollen germination and pollen tube growth in styles were examined using fluorescence microscopy. Stigma receptivity was examined in cross-pollinations made from 1 day before anthesis to 8 days after anthesis. Maximum stigma receptivity for the two cultivars examined occurred from anthesis to 4 days after an

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Hiratsuka, S., T. Tezuka, and Y. Yamamoto. "Analysis of Self-incompatibility Reaction in Easter Lily by Using Heat Treatments." Journal of the American Society for Horticultural Science 114, no. 3 (1989): 505–8. http://dx.doi.org/10.21273/jashs.114.3.505.

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Abstract Self-incompatibility of Easter lily (Lilium longiflorum Thunb.) was overcome by heating the styles. Immersing detached prepollinated styles in distilled water at 45C for 5 min promoted the growth of incompatible pollen tubes. When heat-treated styles were kept at 25C for various periods before pollination, the effect of overcoming selfincompatibility diminished as the period between the heat treatment and pollination was increased. Heat treatment of styles within 2 hr after incompatible pollination promoted the growth of pollen tubes to a distance comparable to compatible ones. When t

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Pietarinen, Päivi, and Hanna-Leena Pasonen. "Pollen performance and male fitness in an anemophilous, monoecious tree, Betula pendula." Canadian Journal of Botany 82, no. 9 (2004): 1284–91. http://dx.doi.org/10.1139/b04-069.

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Betula pendula Roth clones were examined to study the relationship between pollen grain size and pollen tube growth rate and pollen and seed performance. Two hypotheses were tested: (i) pollen donors with larger pollen grains have faster growing pollen tubes and (ii) maternal plants produce more seeds when inflorescences have been pollinated by pollen from donors with fast pollen tube growth. Pollen from 15 plants was collected, and pollen grain sizes and pollen tube growth rates were studied in vitro. Eight maternal clones were pollinated by pollen from seven paternal clones, pollen tube grow

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Tamari, Farshad, Andreas Athanasiou, and Joel S. Shore. "Pollen tube growth and inhibition in distylous and homostylous Turnera and Piriqueta (Turneraceae)." Canadian Journal of Botany 79, no. 5 (2001): 578–91. http://dx.doi.org/10.1139/b01-035.

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We investigate sites of incompatibility for five Turnera L. species and for Piriqueta caroliniana (Walt.) Urban using aniline blue staining of pollen tubes and fluorescence microscopy. We show that sites of incompatibility occur in the stigma and upper regions of the style. There is an asymmetry between the morphs where, following selfing, pollen tubes tend to grow further into long-styled compared to short-styled plants, although the difference is not particularly marked. We demonstrate for the first time a qualitative difference in the appearance of pollen tubes. Upon self-pollination, polle

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Stephenson, Andrew G., Steven E. Travers, Jorge I. Mena-Ali, and James A. Winsor. "Pollen performance before and during the autotrophic–heterotrophic transition of pollen tube growth." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 358, no. 1434 (2003): 1009–18. http://dx.doi.org/10.1098/rstb.2003.1290.

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For species with bicellular pollen, the attrition of pollen tubes is often greatest where the style narrows at the transition between stigmatic tissue and the transmitting tissue of the style. In this region, the tubes switch from predominantly autotrophic to predominantly heterotrophic growth, the generative cell divides, the first callose plugs are produced, and, in species with RNase–type self–incompatibility (SI), incompatible tubes are arrested. We review the literature and present new findings concerning the genetic, environmental and stylar influences on the performance of pollen before

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Xu, Xiaohan, Zhiqiang Tian, Anqi Xing, et al. "Nitric Oxide Participates in Aluminum-Stress-Induced Pollen Tube Growth Inhibition in Tea (Camelliasinensis) by Regulating CsALMTs." Plants 11, no. 17 (2022): 2233. http://dx.doi.org/10.3390/plants11172233.

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Nitric oxide (NO), as a signal molecule, is involved in the mediation of heavy-metal-stress-induced physiological responses in plants. In this study, we investigated the effect of NO on Camellia sinensis pollen tubes exposed to aluminum (Al) stress. Exogenous application of the NO donor decreased the pollen germination rate and pollen tube length and increased the malondialdehyde (MDA) content and antioxidant enzyme activities under Al stress. Simultaneously, the NO donor effectively increased NO content in pollen tube of C. sinensis under Al stress and could aggravate the damage of Al3+ to C.

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Davenport, Thomas L. "529 Pollen Tube Growth in Stage 2 Pollinated Avocado Flowers." HortScience 35, no. 3 (2000): 486C—486. http://dx.doi.org/10.21273/hortsci.35.3.486c.

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Individual avocado (Persea americana Mill.) flowers are perfect, opening two times to display two distinct reproductive stages on consecutive days. Stage 1 focuses on presentation of pistils and Stage 2 on presentation of pollen. The Stage 1 opening offers the greatest opportunity for outcrossing due to the absence of available pollen in that stage. Stage 2 flowers, however, are self-pollinated within flowers in direct proportion to the number of white stigmas present at the time of pollen dispersal. The potential success of these self-pollination events was examined in orchard trees of seven

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Jahed, Khalil R., and Peter M. Hirst. "Pollen Tube Growth and Fruit Set in Apple." HortScience 52, no. 8 (2017): 1054–59. http://dx.doi.org/10.21273/hortsci11511-16.

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Pollination is an essential prerequisite for the production of many fruit and seed crops, including apple. In apple, successful fertilization requires pollen transfer to the stigma, pollen germination, and successful pollen tube growth resulting in fruit set. Precise selection of the most effective pollinizers for commercial orchards is not possible however, until these processes are more fully understood. The present study was undertaken to compare pollinizers in terms of pollen tube growth and fruit set. On trees of ‘Honeycrisp’, ‘Fuji’, and ‘Gala’ from which bees were excluded, flowers were

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Liedl, Barbara E., and Martha A. Mutschler. "THE UNILATERAL INTERSPECIFIC CROSSING BARRIER IN LYCOPERSICON IS NOT SELF INCOMPATIBILITY." HortScience 25, no. 9 (1990): 1079a—1079. http://dx.doi.org/10.21273/hortsci.25.9.1079a.

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Little is known about the mechanisms controlling interspecific barriers, unlike the well studied intraspecific barrier, self incompatibility (SI),. A unilateral crossing barrier (unilateral incongruity - UI) exists among the Lycopersicon species, in which crossing is impeded or prevented in one direction. Since both UI and SI can give unilateral differences in seed set, suggestions have been made that UI and SI are functionally related. L. pennellii LA716 is self-compatible, unlike the other accessions which are SI, but LA716 still exhibits UI with L. esculentum (esc). We observed the developm

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Amari, Khalid, Lorenzo Burgos, Vicente Pallas, and María Amelia Sanchez-Pina. "Prunus necrotic ringspot virus Early Invasion and Its Effects on Apricot Pollen Grain Performance." Phytopathology® 97, no. 8 (2007): 892–99. http://dx.doi.org/10.1094/phyto-97-8-0892.

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The route of infection and the pattern of distribution of Prunus necrotic ringspot virus (PNRSV) in apricot pollen were studied. PNRSV was detected both within and on the surface of infected pollen grains. The virus invaded pollen during its early developmental stages, being detected in pollen mother cells. It was distributed uniformly within the cytoplasm of uni- and bicellular pollen grains and infected the generative cell. In mature pollen grains, characterized by their triangular shape, the virus was located mainly at the apertures, suggesting that PNRSV distribution follows the same patte

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Pound, L. M., M. A. B. Wallwork, B. M. Potts, and M. Sedgley. "Self-incompatibility in Eucalyptus globulus ssp. globulus (Myrtaceae)." Australian Journal of Botany 50, no. 3 (2002): 365. http://dx.doi.org/10.1071/bt01076.

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Controlled pollinations with self- and cross-pollen were applied to individual flowers of five mature Eucalyptus globulus Labill. ssp. globulus trees to investigate the site of action of the self-incompatibility mechanism. Growth of pollen tubes in styles at 2 weeks after pollination and ovule penetration by pollen tubes at 2 and 4 weeks after pollination were investigated by fluorescence microscopy. Some pollinated flowers were left to develop to seed maturity, then harvested to quantify the level of self-incompatibility of each tree. Trees ranged from 76 to 100% self-incompatible. There was

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Djordjevic, Milena, Radosav Cerovic, Sanja Radicevic, and Dragan Nikolic. "Incompatible pollen tubes in the plum style and their impact on fertilization success." Genetika 46, no. 2 (2014): 411–18. http://dx.doi.org/10.2298/gensr1402411d.

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The pistils of plum (Prunus domestica L.) cv. ?Cacanska Lepotica? were self- and cross-pollinated in order to investigate occurrence of incompatible pollen tubes in the style, and their impact on fertilization success. The investigation also included open pollination variant. The highest percentage of these stopped the growth in the upper third of the style. Under cross-pollination variant, 15.4% and 12.1% of pollen tubes observed in the upper part of the style in the first and the second years of study, respectively, were found incompatible. In view of the above parameters, in the self- polli

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Zijlstra, Sierd, Coen Purimahua, and Pim Lindhout. "Pollen Tube Growth in Interspecific Crosses between Capsicum Species." HortScience 26, no. 5 (1991): 585–86. http://dx.doi.org/10.21273/hortsci.26.5.585.

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Crossing barriers between white- and purple-flowered species were examined. Four accessions of Capsicum annuum and three of C. pubescens were reciprocally crossed with one to four accessions of C. baccatum, C. cardenasii, C. chacoense, C. chinense, C. eximium, C. frutescens, C. galapagoense, and C. praetermissum. Capsicum chacoense is the only white-flowered species that inhibits C. annuum pollen tube growth but allows C. pubescens pollen tube penetration into the egg cell. Capsicum cardenasii and C. eximium exhibit similar crossabilities with C. annuum and C. pubescens: pollen tubes of C. car

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Fu, Ying, Guang Wu, and Zhenbiao Yang. "ROP Gtpase–Dependent Dynamics of Tip-Localized F-Actin Controls Tip Growth in Pollen Tubes." Journal of Cell Biology 152, no. 5 (2001): 1019–32. http://dx.doi.org/10.1083/jcb.152.5.1019.

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Tip-growing pollen tubes provide a useful model system to study polar growth. Although roles for tip-focused calcium gradient and tip-localized Rho-family GTPase in pollen tube growth is established, the existence and function of tip-localized F-actin have been controversial. Using the green fluorescent protein–tagged actin-binding domain of mouse talin, we found a dynamic form of tip-localized F-actin in tobacco pollen tubes, termed short actin bundles (SABs). The dynamics of SABs during polar growth in pollen tubes is regulated by Rop1At, a Rop GTPase belonging to the Rho family. When overex

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Broz, Amanda K., and Patricia A. Bedinger. "Pollen-Pistil Interactions as Reproductive Barriers." Annual Review of Plant Biology 72, no. 1 (2021): 615–39. http://dx.doi.org/10.1146/annurev-arplant-080620-102159.

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Pollen-pistil interactions serve as important prezygotic reproductive barriers that play a critical role in mate selection in plants. Here, we highlight recent progress toward understanding the molecular basis of pollen-pistil interactions as reproductive isolating barriers. These barriers can be active systems of pollen rejection, or they can result from a mismatch of required male and female factors. In some cases, the barriers are mechanistically linked to self-incompatibility systems, while others represent completely independent processes. Pollen-pistil reproductive barriers can act as so

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Hema, Rathore1 Dushyant K. Singh*2 Purti Chaturvedi1 and Rajneesh K. Agnihotri1. "POLLEN GERMINATION AND TUBE GROWTH IN FOUR SELECTED GENERA OF FAMILY MALVACEAE AND PAPAVERACEAE." Journal of Science Innovations and Nature of Earth Vol. 1, no. 1 (2021): 1–3. https://doi.org/10.5281/zenodo.6189767.

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Sexual reproduction in flowering plants comprises pollination, pollen tube elongation, and fertilization. Reproductive biology has been widely applied to the effective conservation and cultivation of species. In the current study, pollen germination and pollen tube elongation were carried out in several chosen plants species of Agra, Uttar Pradesh, for its reproductive success. All plants are helpful the making herbal medicines and belong to family Malvaceae and Papaveraceaea. Average pollen germination percentage was determined to be 58% with 55.03 ± 5.01 µm long pollen tubes in

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Stuart, Mary, and Pablo Jourdan. "455 PB 326 PISTIL INFLUENCE ON GROWTH OF POLLEN TUBES OF P. X DOMESTICUM." HortScience 29, no. 5 (1994): 496e—496. http://dx.doi.org/10.21273/hortsci.29.5.496e.

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The regal pelargonium (P. x domesticum) is generally characterized by low fertility and poor seed set. In studys designed to assess factors that contribute to low fecundity in this crop we have examined genotype interactions among various cultivars and have identified lines that differ in degree of male and female fertility. The objective of this study was to examine genotypic variation, other than self-incompatibility, of P. x domesticum pistils in supporting the development of the male gametophyte. Variation in pollen germination and growth was assessed after crossing either a male of high f

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Ryn, D. M. Van, J. P. Lassoie, and J. S. Jacobson. "Effects of acid mist on invivo pollen tube growth in red maple." Canadian Journal of Forest Research 18, no. 8 (1988): 1049–52. http://dx.doi.org/10.1139/x88-158.

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The effects of mist acidity on invivo pollen germination and tube elongation of red maple (Acerrubrum L.) were investigated. Branches with female flowers were exposed to simulated mist at pH values of 5.6, 4.6, 3.6, and 2.6. After exposure, stigmas were pollinated with fresh, untreated pollen. Following a growth period of 24 h, styles were excised, stained, and observed with fluorescence microscopy to determine the number of grains that had germinated and the number of tubes that had grown to the base of the style. Both germination and tube growth were sensitive to the pH of mist. During one t

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Li, Hui, Jinbo Hu, Jing Pang, et al. "Rho GTPase ROP1 Interactome Analysis Reveals Novel ROP1-Associated Pathways for Pollen Tube Polar Growth in Arabidopsis." International Journal of Molecular Sciences 21, no. 19 (2020): 7033. http://dx.doi.org/10.3390/ijms21197033.

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ROP (Rho-like GTPases from plants) GTPases are polarly localized key regulators of polar growth in pollen tubes and other cells in plants. However, how ROP GTPases are regulated and how they control polar growth remains to be fully understood. To gain new insights into ROP-dependent mechanisms underlying polar cell growth, we characterized the interactome of ROP1 GTPase that controls Arabidopsis pollen tube (PT) tip growth, an extreme form of polar cell growth. We established an efficient method for culturing Arabidopsis pollen tubes in liquid medium, which was used for immunoprecipitation/mas

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Maguire, T. L., and M. Sedgley. "Interspecific and Intergeneric Pistil - Pollen Compatibility of Banksia coccinea (Proteaceae)." Australian Journal of Botany 46, no. 4 (1998): 453. http://dx.doi.org/10.1071/bt96095.

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Interspecific and intergeneric pollen-tube growth was investigated using controlled hand pollinations of Banksia coccinea R.Br., 35 species of Banksia L.f., and three species of the related genus Dryandra R.Br. Currently, the relationship between B. coccinea and other species groups within Banksia is unclear. Some species supported no germination of B. coccinea pollen, some supported normal pollen-tube growth and others produced pollen-tube abnormalities including thickened walls, bulbous swellings, directionless growth, burst tips and branched tubes. Control of pollen-tube growth in the pisti

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DeLong, Candace N., Keith S. Yoder, Leon Combs, Richard E. Veilleux, and Gregory M. Peck. "Apple Pollen Tube Growth Rates Are Regulated by Parentage and Environment." Journal of the American Society for Horticultural Science 141, no. 6 (2016): 548–54. http://dx.doi.org/10.21273/jashs03824-16.

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A greater understanding of apple (Malus ×domestica) pollen tube growth rates can improve crop load management in commercial orchards. Specifically, applications of caustic bloom-thinning chemicals need to occur when enough, but not too many, flowers have been fertilized to achieve crop load densities that balance yields with marketable fruit sizes. In this study, the pollen tube growth rates of five crabapple (Malus sp.) cultivars were measured in the styles of three maternal cultivars at 12, 18, 24, and 30 °C after 24 hours in a growth chamber. Pollen tube growth rates were greatest for ‘Selk

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Radovic, Aleksandar, Radosav Cerovic, Dragan Milatovic, and Dragan Nikolic. "Pollen tube growth and fruit set in quince (Cydonia oblonga Mill.)." Spanish Journal of Agricultural Research 18, no. 2 (2020): e0702. http://dx.doi.org/10.5424/sjar/2020182-15551.

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Aim of study: To determine the self-compatibility level of eight quince cultivars.Area of study: The region of Belgrade (Central Serbia).Material and methods: Pollen tube growth in vivo and fruit set in two pollination variants (self- and open-pollination) were studied in eight quince cultivars. The quantitative parameters of pollen tube growth (average number of pollen tubes in the upper and middle third of the style, base of the style and in the ovary; the dynamics of pollen tube growth through these parts of the pistil) was determined using the fluorescence microscopy.Main results: The para

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Qin, Yuan, and Zhenbiao Yang. "Rapid tip growth: Insights from pollen tubes." Seminars in Cell & Developmental Biology 22, no. 8 (2011): 816–24. http://dx.doi.org/10.1016/j.semcdb.2011.06.004.

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Fernando, Danilo D., Mark D. Lazzaro, and John N. Owens. "Growth and development of conifer pollen tubes." Sexual Plant Reproduction 18, no. 4 (2005): 149–62. http://dx.doi.org/10.1007/s00497-005-0008-y.

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Fernando, Danilo D., Mark D. Lazzaro, and John N. Owens. "Growth and development of conifer pollen tubes." Sexual Plant Reproduction 18, no. 4 (2005): 195. http://dx.doi.org/10.1007/s00497-005-0013-1.

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Yu, Jie, Baoan Wang, Wenqi Fan, et al. "Polyamines Involved in Regulating Self-Incompatibility in Apple." Genes 12, no. 11 (2021): 1797. http://dx.doi.org/10.3390/genes12111797.

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Apple exhibits typical gametophytic self-incompatibility, in which self-S-RNase can arrest pollen tube growth, leading to failure of fertilization. To date, there have been few studies on how to resist the toxicity of self-S-RNase. In this study, pollen tube polyamines were found to respond to self-S-RNase and help pollen tubes defend against self-S-RNase. In particular, the contents of putrescine, spermidine, and spermine in the pollen tube treated with self-S-RNase were substantially lower than those treated with non-self-S-RNase. Further analysis of gene expression of key enzymes in the syn

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Lorbiecke, René. "Plant Reproduction & the Pollen Tube Journey – How the Females Lure the Males." American Biology Teacher 74, no. 8 (2012): 575–80. http://dx.doi.org/10.1525/abt.2012.74.8.8.

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The growth of pollen tubes is one of the most characteristic events in angiosperm reproduction. This article describes an activity for visualizing the journey and guidance of pollen tubes in the reproductive structures of a flowering plant. The activity uses a semi-in vivo system with rapid-cycling Brassica rapa, also known as Fast Plants. Isolated ovules were used to attract pollen tubes that were triggered to grow through explants of female flower parts. The activity provides insight into the in vivo situation of plant reproduction, appealing visual results, and the development of science pr

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