References
Becker JD, Takeda S, Borges F, et al. (2014) Transcriptional profiling of Arabidopsis root hairs and pollen defines an apical cell growth signature. BMC Plant Biology 14: 197.
Bernal AJ, Yoo CM, Mutwil M, et al. (2008) Functional analysis of the cellulose synthase‐like genes CSLD1, CSLD2, and CSLD4 in tip‐growing Arabidopsis cells. Plant Physiology 148: 1238–1253.
Bibikova TN, Blancaflor EB and Gilroy S (1999) Microtubules regulate tip growth and orientation in root hairs of Arabidopsis thaliana. Plant Journal 17: 657–665.
Bloch D, Monshausen G, Singer M, et al. (2011) Nitrogen source interacts with ROP signaling in root hair tip‐growth. Plant Cell and Environment 34: 76–88.
Bloch D, Pleskot R, Pejchar P, et al. (2016) Exocyst SEC3 and phosphoinositides define sites of exocytosis in pollen tube initiation and growth. Plant Physiology 172: 980–1002.
Boisson‐Dernier A, Lituiev DS, Nestorova A, et al. (2013) ANXUR receptor‐like kinases coordinate cell wall integrity with growth at the pollen tube tip via NADPH oxidases. PLoS Biology 11: e1001719.
Certal AC, Almeida RB, Carvalho LM, et al. (2008) Exclusion of a proton ATPase from the apical membrane is associated with cell polarity and tip growth in Nicotiana tabacum pollen tubes. Plant Cell 20: 614–634.
Chang F, Yan A, Zhao LN, et al. (2007) A putative calcium‐permeable cyclic nucleotide‐gated channel, CNGC18, regulates polarized pollen tube growth. Journal of Integrative Plant Biology 49: 1261–1270.
Chen J, Wang F, Zheng S, et al. (2015) Pavement cells: a model system for non‐transcriptional auxin signalling and crosstalks. Journal of Experimental Botany 66: 4957–4970.
Cheung AY, Chen CY, Glaven RH, et al. (2002) Rab2 GTPase regulates vesicle trafficking between the endoplasmic reticulum and the Golgi bodies and is important to pollen tube growth. Plant Cell 14: 945–962.
Cheung AY and Wu HM (2011) THESEUS 1, FERONIA and relatives: a family of cell wall‐sensing receptor kinases? Current Opinion in Plant Biology 14: 632–641.
Duan Q, Kita D, Li C, et al. (2010) FERONIA receptor‐like kinase regulates RHO GTPase signaling of root hair development. Proceedings of the National Academy of Sciences of the United States of America 107: 17821–17826.
Duan Q, Kita D, Johnson EA, et al. (2014) Reactive oxygen species mediate pollen tube rupture to release sperm for fertilization in Arabidopsis. Nature Communications 5: 3129.
Eng RC and Wasteneys GO (2014) The microtubule plus‐end tracking protein ARMADILLO‐REPEAT KINESIN1 promotes microtubule catastrophe in Arabidopsis. Plant Cell 26: 3372–3386.
Feijo JA, Sainhas J, Hackett GR, et al. (1999) Growing pollen tubes possess a constitutive alkaline band in the clear zone and a growth‐dependent acidic tip. Journal of Cell Biology 144: 483–496.
Foreman J, Demidchik V, Bothwell JH, et al. (2003) Reactive oxygen species produced by NADPH oxidase regulate plant cell growth. Nature 422: 442–446.
Frietsch S, Wang YF, Sladek C, et al. (2007) A cyclic nucleotide‐gated channel is essential for polarized tip growth of pollen. Proceedings of the National Academy of Sciences of the United States of America 104: 14531–14536.
Fu Y (2015) The cytoskeleton in the pollen tube. Current Opinion in Plant Biology 28: 111–119.
Gao QF, Gu LL, Wang HQ, et al. (2016) Cyclic nucleotide‐gated channel 18 is an essential Ca2+ channel in pollen tube tips for pollen tube guidance to ovules in Arabidopsis. Proceedings of the National Academy of Sciences of the United States of America 113: 3096–3101.
Gu Y, Fu Y, Dowd P, et al. (2005) A Rho family GTPase controls actin dynamics and tip growth via two counteracting downstream pathways in pollen tubes. Journal of Cell Biology 169: 127–138.
Gu F and Nielsen E (2013) Targeting and regulation of cell wall synthesis during tip growth in plants. Journal of Integrative Plant Biology 55: 835–846.
Gutermuth T, Lassig R, Portes MT, et al. (2013) Pollen tube growth regulation by free anions depends on the interaction between the anion channel SLAH3 and calcium‐dependent protein kinases CPK2 and CPK20. Plant Cell 25: 4525–4543.
Hafidh S, Breznenova K, Ruzicka P, et al. (2012) Comprehensive analysis of tobacco pollen transcriptome unveils common pathways in polar cell expansion and underlying heterochronic shift during spermatogenesis. BMC Plant Biology 12: 24.
Hamilton ES, Jensen GS, Maksaev G, et al. (2015) Mechanosensitive channel MSL8 regulates osmotic forces during pollen hydration and germination. Science 350: 438–441.
Haruta M, Monshausen G, Gilroy S, et al. (2008) A cytoplasmic Ca2+ functional assay for identifying and purifying endogenous cell signaling peptides in Arabidopsis seedlings: identification of AtRALF1 peptide. Biochemistry 47: 6311–6321.
Haruta M, Sabat G, Stecker K, et al. (2014) A peptide hormone and its receptor protein kinase regulate plant cell expansion. Science 343: 408–411.
Haruta M, Gray WM and Sussman MR (2015) Regulation of the plasma membrane proton pump (H(+)‐ATPase) by phosphorylation. Current Opinion in Plant Biology 28: 68–75.
Heilmann I and Ischebeck T (2016) Male functions and malfunctions: the impact of phosphoinositides on pollen development and pollen tube growth. Plant Reproduction 29: 3–20.
Iwano M, Entani T, Shiba H, et al. (2009) Fine‐tuning of the cytoplasmic Ca2+ concentration is essential for pollen tube growth. Plant Physiology 150: 1322–1334.
Ketelaar T, Faivre‐Moskalenko C, Esseling JJ, et al. (2002) Positioning of nuclei in Arabidopsis root hairs: an actin‐regulated process of tip growth. Plant Cell 14: 2941–2955.
Ketelaar T (2013) The actin cytoskeleton in root hairs: all is fine at the tip. Current Opinion in Plant Biology 16: 749–756.
Laohavisit A, Shang Z, Rubio L, et al. (2012) Arabidopsis annexin1 mediates the radical‐activated plasma membrane Ca(2) + ‐ and K + ‐permeable conductance in root cells. Plant Cell 24: 1522–1533.
Lassig R, Gutermuth T, Bey TD, et al. (2014) Pollen tube NAD(P)H oxidases act as a speed control to dampen growth rate oscillations during polarized cell growth. Plant Journal 78: 94–106.
Macpherson N, Takeda S, Shang Z, et al. (2008) NADPH oxidase involvement in cellular integrity. Planta 227: 1415–1418.
Michard E, Alves F and Feijo JA (2009) The role of ion fluxes in polarized cell growth and morphogenesis: the pollen tube as an experimental paradigm. International Journal of Developmental Biology 53: 1609–1622.
Michard E, Lima PT, Borges F, et al. (2011) Glutamate receptor‐like genes form Ca2+ channels in pollen tubes and are regulated by pistil D‐serine. Science 332: 434–437.
Monshausen GB, Bibikova TN, Messerli MA, et al. (2007) Oscillations in extracellular pH and reactive oxygen species modulate tip growth of Arabidopsis root hairs. Proceedings of the National Academy of Sciences of the United States of America 104: 20996–21001.
Myers C, Romanowsky SM, Barron YD, et al. (2009) Calcium‐dependent protein kinases regulate polarized tip growth in pollen tubes. Plant Journal 59: 528–539.
Park E and Nebenfuhr A (2013) Myosin XIK of Arabidopsis thaliana accumulates at the root hair tip and is required for fast root hair growth. PLoS One 8: e76745.
Potocky M, Pejchar P, Gutkowska M, et al. (2012) NADPH oxidase activity in pollen tubes is affected by calcium ions, signaling phospholipids and Rac/Rop GTPases. Journal of Plant Physiology 169: 1654–1663.
Schiott M, Romanowsky SM, Baekgaard L, et al. (2004) A plant plasma membrane Ca2+ pump is required for normal pollen tube growth and fertilization. Proceedings of the National Academy of Sciences of the United States of America 101: 9502–9507.
Shih HW, Miller ND, Dai C, et al. (2014) The receptor‐like kinase FERONIA is required for mechanical signal transduction in Arabidopsis seedlings. Current Biology 24: 1887–1892.
Steinhorst L, Mahs A, Ischebeck T, et al. (2015) Vacuolar CBL‐CIPK12 Ca(2+)‐sensor‐kinase complexes are required for polarized pollen tube growth. Current Biology 25: 1475–1482.
Takeda S, Gapper C, Kaya H, et al. (2008) Local positive feedback regulation determines cell shape in root hair cells. Science 319: 1241–1244.
Tunc‐Ozdemir M, Rato C, Brown E, et al. (2013) Cyclic nucleotide gated channels 7 and 8 are essential for male reproductive fertility. PLoS One 8: e55277.
Vidali L and Bezanilla M (2012) Physcomitrella patens: a model for tip cell growth and differentiation. Current Opinion in Plant Biology 2012 (15): 625–631.
Vijayakumar P, Datta S and Dolan L (2016) ROOT HAIR DEFECTIVE SIX‐LIKE4 (RSL4) promotes root hair elongation by transcriptionally regulating the expression of genes required for cell growth. New Phytologist 212: 944–953.
Wang SS, Diao WZ, Yang X, et al. (2015) Arabidopsis thaliana CML25 mediates the Ca(2+) regulation of K(+) transmembrane trafficking during pollen germination and tube elongation. Plant, Cell & Environment 38: 2372–2386.
Yang X, Wang SS, Wang M, et al. (2014) Arabidopsis thaliana calmodulin‐like protein CML24 regulates pollen tube growth by modulating the actin cytoskeleton and controlling the cytosolic Ca(2+) concentration. Plant Molecular Biology 86: 225–236.
Yoo CM and Blancaflor EB (2013) Overlapping and divergent signaling pathways for ARK1 and AGD1 in the control of root hair polarity in Arabidopsis thaliana. Frontiers in Plant Science 4: 528.
Zhang C, Brown MQ, van de Ven W, et al. (2016) Endosidin2 targets conserved exocyst complex subunit EXO70 to inhibit exocytosis. Proceedings of the National Academy of Sciences of the United States of America 113: E41–E50.
Zhou L, Lan W, Jiang Y, et al. (2014) A calcium‐dependent protein kinase interacts with and activates a calcium channel to regulate pollen tube growth. Molecular Plant 7: 369–376.
Zhou Z, Shi H, Chen B, et al. (2015) Arabidopsis RIC1 severs actin filaments at the apex to regulate pollen tube growth. Plant Cell 27: 1140–1161.
Further Reading
Cai G, Parrotta L and Cresti M (2015) Organelle trafficking, the cytoskeleton, and pollen tube growth. Journal of Integrative Plant Biology 57: 63–78.
Chebli Y, Kroeger J and Geitmann A (2013) Transport logistics in pollen tubes. Molecular Plant 6: 1037–1052.
Galindo‐Trigo S, Gray JE and Smith LM (2016) Conserved roles of CrRLK1L receptor‐like kinases in cell expansion and reproduction from algae to angiosperms. Frontiers in Plant Science 7: 1269.
Mendrinna A and Persson S (2015) Root hair growth: it's a one way street. F1000Prime Report 7: 23.
Steinhorst L and Kudla J (2013) Calcium – a central regulator of pollen germination and tube growth. Biochimica et Biophysica Acta 1833: 1573–1581.