Pollen Germination and Pollen-Tube Growth

Heslop‐Harrison, J.

doi:10.1016/s0074-7696(08)61072-4

Cited by 362 publications

(179 citation statements)

References 124 publications

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“…The polar growth of this highly elongated cell requires the coordination of many cellular features and functions, such as turgor pressure, ion fluxes, organization, and dynamics of cytoskeletal elements, membrane trafficking, and cell wall formation (Heslop-Harrison, 1987;Steer and Steer, 1989;Mascarenhas, 1993;Holdaway-Clarke and Hepler, 2003;Cole and Fowler, 2006;Campanoni and Blatt, 2007;Chebli and Geitmann, 2007;Krichevsky et al, 2007;Cheung and Wu, 2008). Given the magnitude of the growth process, our attention becomes focused on the synthesis, delivery, and secretion of the new material, which must keep pace with the ever-expanding cell wall (Campanoni and Blatt, 2007;Cheung and Wu, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…These vesicles move along actin microfilaments to the apical domain where they undergo exocytosis, fusing with the apical plasma membrane and contributing their contents to the cell wall (Heslop-Harrison, 1987;Steer and Steer, 1989;Lancelle and Hepler, 1992;Cheung and Wu, 2008). Due to the necessity of maintaining the appropriate surface-to-volume ratio, much of the secreted membrane is reclaimed by endocytosis (Picton and Steer, 1983;Moscatelli et al, 2007;Bove et al, 2008;Ketelaar et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Exocytosis Precedes and Predicts the Increase in Growth in Oscillating Pollen Tubes

et al. 2009

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We examined exocytosis during oscillatory growth in lily (Lilium formosanum and Lilium longiflorum) and tobacco (Nicotiana tabacum) pollen tubes using three markers: (1) changes in cell wall thickness by Nomarski differential interference contrast (DIC), (2) changes in apical cell wall fluorescence in cells stained with propidium iodide (PI), and (3) changes in apical wall fluorescence in cells expressing tobacco pectin methyl esterase fused to green fluorescent protein (PME-GFP). Using PI fluorescence, we quantified oscillatory changes in the amount of wall material from both lily and tobacco pollen tubes. Measurement of wall thickness by DIC was only possible with lily due to limitations of microscope resolution. PME-GFP, a direct marker for exocytosis, only provides information in tobacco because its expression in lily causes growth inhibition and cell death. We show that exocytosis in pollen tubes oscillates and leads the increase in growth rate; the mean phase difference between exocytosis and growth is -988 6 38 in lily and -1248 6 48 in tobacco. Statistical analyses reveal that the anticipatory increase in wall material predicts, to a high degree, the rate and extent of the subsequent growth surge. Exocytosis emerges as a prime candidate for the initiation and regulation of oscillatory pollen tube growth.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exocytosis Precedes and Predicts the Increase in Growth in Oscillating Pollen Tubes

et al. 2009

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“…Pollen tube growth is relatively independent of stylar nutrients only during the first phases of growth; subsequently, pollen function can be strongly affected by the female tissues *Correspondence 62 in which it grows, and that can act as a sieve, favouring the more competitive gametophytes. In maize, the establishment of a metabolic interaction between pollen and style is expected for physiological reasons: because of the difference between pollen diameter (90-100 sum) and tube length (20 cm or more) (Heslop-Harrison, 1987;Ottaviano & Mulcahy, 1989;Sari-Gorla & Frova, 1994).…”

Section: Introductionmentioning

confidence: 99%

Detection of genetic factors controlling pollen–style interaction in maize

et al. 1995

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In order to detect loci specifically related to pollen-style interaction in maize, linkage analysis to RFLP markers was performed on a population of recombinant inbred lines, the pollen of which was used to pollinate female plants of two different genotypes: the F1 from which the recombinant inbred population was derived ('self female') and a genetically unrelated hybrid genotype ('cross female'). Besides pollen grain germinability and pollen tube growth rate on the two females, pollen general competitive ability and pollen specific competitive ability for both traits were evaluated, following the procedure used to estimate general and specific combining ability, applied to the pollen-style genetic combination instead of to the hybrid genetic combination. A clear advantage of recombinant inbred line pollen, in terms of germination and early growth, was revealed on self female tissues whereas an inverse effect was detected for tube growth rate: tube growth, until fertilization, was faster on the female of unrelated genotype. Linkage analysis to molecular markers (RFLP) of germinability and of tube growth rate on the two stylar genotypes identified nine QTLs for the first trait on the self and eight on the cross female; four chromosome regions for tube growth rate were detected on the self and 11 on the cross style. Most of the general competitive ability effects were localized in the regions where QTLs for germinability or pollen tube growth were detected, in particular on the cross female; on the contrary, most of the loci for pollen specific competitive ability effects proved to be localized in different chromosome regions.

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“…The results showed that there is enough Ca 2+ at the internal of pollen to support germination. When the pollen absorbs water, the Ca 2+ at surface of pollen is released into the culture medium to stimulate pollen germination (Tian et al, 1998, Heslop-Harrison, 1987. In this study, in the process of in vitro pollen germination of A. auriculiformis and A. mangium, the pollen germination were the best without the addition of Ca (Xue et al, 2007).…”

Section: Camentioning

confidence: 76%

Effects of Ca²⁺ on in vitro pollen germination of three Acacia species

Zhan

LieJian

2016

Silvae Genetica

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We investigated the effects of Ca . With high Ca 2+ concentration, the pollen germination of A. auriculiformis, A. mangium, and A. crassicarpa were obviously inhibited. With the rise of Ca 2+ concentration, the percentage of pollen germination, the pollen tube length, the pollen tube growth, and the number of pollen tube were increased. However, the pollen germination percentage decreased with high Ca 2+ concentration.

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Pollen Germination and Pollen-Tube Growth

Cited by 362 publications

References 124 publications

Exocytosis Precedes and Predicts the Increase in Growth in Oscillating Pollen Tubes

Exocytosis Precedes and Predicts the Increase in Growth in Oscillating Pollen Tubes

Detection of genetic factors controlling pollen–style interaction in maize

Effects of Ca²⁺ on in vitro pollen germination of three Acacia species

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Pollen Germination and Pollen-Tube Growth

Cited by 362 publications

References 124 publications

Exocytosis Precedes and Predicts the Increase in Growth in Oscillating Pollen Tubes

Exocytosis Precedes and Predicts the Increase in Growth in Oscillating Pollen Tubes

Detection of genetic factors controlling pollen–style interaction in maize

Effects of Ca2+ on in vitro pollen germination of three Acacia species

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Product

Resources

About

Effects of Ca²⁺ on in vitro pollen germination of three Acacia species