Biological process to genes

Query process ID GO:0009860
Process name Growth of pollen via tip extension of the intine wall.
Organism Arabidopsis thaliana

Click Gene ID to show a list of co-expressed genes.

ECC Gene ID Repr. ID Gene name Functional description O.I. H.G. Other DB
XAt1g04450839513RIC3 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 3)Encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). It interacts with Rop1 and is involved in pollen tube growth and function, and exocytosis in the pollen tube tip. The protein most similar to RIC1 (family subgroup III). Gene is expressed predominantly in inflorescence and flower tissue. Interacts with ROP1 to modulate calcium ion influxes required to generate tip-focused calcium gradients.ItO.I.H.G.
XAt1g04950839370TAF6 (TBP-ASSOCIATED FACTOR 6)Encodes one of two Arabidopsis proteins with significant similarity to the histone fold TBP-associated factor TAF6. Mutants are embryo lethal and transmission of the mutant allele through the male gametophyte is significantly reduced. This is due to reduced pollen tube growth of the mutant.O.I.H.G.
XAt1g20090838598ROP2 (RHO-RELATED PROTEIN FROM PLANTS 2)Member of the Rho GTPase family. Functions to organize the microtubular cytoskeleton in combination with RIC1 and RIC4. These interactions affect pavement cell morphogenesis and pollen tube growth. ROP2 expression is stimulated by brassinosteroid treatment. Inhibit light-induced stomatal opening.O.I.H.G.
XAt1g21170838713SEC5BF:molecular_function unknown;P:pollen germination, pollen tube growth;C:cytosol;MFPOBVO.I.H.G.
XAt1g27380839627RIC2 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 2)encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). Interacts with Rop1 and is involved in pollen tube growth and function. Protein most similar to RIC4 (family subgroup V). Gene is expressed in all tissues examined.O.I.H.G.
XAt1g48020841220PMEI1 (PECTIN METHYLESTERASE INHIBITOR 1)Pectin methylesterase inhibitor AtPMEI1. Inactivates AtPPME1 in vitro. Localized to pollen tube cell tip.O.I.H.G.
XAt1g69940843331PPME1Encodes a protein with pectin methylesterase activity. The protein expression was shown to be highly restricted to the pollen grain (no detection in any other tissues or in the pollen grains' surrounding cells of the anthers.O.I.H.G.
XAt1g71270843468POK (POKY POLLEN TUBE)Encodes a homolog of the yeast Vps52p/SAC2. Involved in pollen tube germination and growth. Located in multiple endomembrane organelles including the golgi. The yeast protein has been shown to be located at the late Golgi and to function in a complex involved in retrograde trafficking of vesicles between the early endosomal compartment and the trans-Golgi network.O.I.H.G.
XAt1g71820843512SEC6F:molecular_function unknown;P:pollen germination, pollen tube growth;C:plasma membrane, exocyst;MFOPBAO.I.H.G.
XAt1g76850844020SEC5A (EXOCYST COMPLEX COMPONENT SEC5)F:molecular_function unknown;P:pollen germination, pollen tube growth;C:cytosol, plasma membrane;MFPOVBO.I.H.G.
XAt1g79250844265AGC1.7 (AGC KINASE 1.7)F:kinase activity;P:pollen tube growth, unidimensional cell growth;C:unknown;MOPFBVAO.I.H.G.
XAt1g79860844325ROPGEF12 (RHO GUANYL-NUCLEOTIDE EXCHANGE FACTOR 12)Encodes a member of KPP-like gene family, homolog of KPP (kinase partner protein) gene in tomato. Also a member of the RopGEF (guanine nucleotide exchange factor) family, containing the novel PRONE domain (plant-specific Rop nucleotide exchanger), which is exclusively active towards members of the Rop subfamily. Coexpression of AtPRK2a with AtRopGEF12 resulted in isotropic pollen tube growth Growth.O.I.H.G.
XAt2g07040815274PRK2APollen receptor kinase. Coexpression of AtPRK2a with AtRopGEF12 resulted in isotropic pollen tube growth.O.I.H.G.
XAt2g20430816562RIC6 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 6)encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). Most similar to RIC7 and RIC8 (subfamily group II). Gene is expressed predominantly in inflorescence and flower tissue.O.I.H.G.
XAt2g25600817099SPIK (Shaker Pollen Inward K+ channel)mutant has Impaired pollen-tube growth; member of Shaker K+ channel family, also Stelar K+ outward rectifying channel (SKOR) familyO.I.H.G.
XAt2g33460817911RIC1 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 1)encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). Interacts with Rop1 and is involved in pollen tube growth and function. Protein most similar to RIC3(family subgroup III). RIC1 is localized to the apical region of the plasma membrane in pollen tube and mutation analyses indicate that this localization is dependent on ROP1 binding. Gene is expressed in all tissues examined.Analysis of overexpression and loss of function mutants indicates a role in cortical microtubule organization during pavement cell morphogenesis.O.I.H.G.
XAt2g34980818062SETH1Encodes a putative phosphatidylinositol-glycan synthase subunit C gene. It is involved in the first step of the glycosylphosphatidylinositol (GPI) biosynthetic pathway.O.I.H.G.
XAt2g41210818720PIP5K5 (PHOSPHATIDYLINOSITOL- 4-PHOSPHATE 5-KINASE 5)Encodes a protein with phosphatidylinositol-4-phosphate 5-kinase activity that plays a role in pollen tip growth. The enzyme localizes to the apical plasma membrane and adjacent cytosolic region of pollen tubes. Overexpression of this gene leads to increased deposition of pectin in the cell wall at the tip of the pollen tube and causes altered pollen tube morphology.O.I.H.G.
XAt3g01700821093AGP11Encodes an arabinogalactan protein that is expressed in pollen, pollen sac and pollen tube. Loss of AGP11 function results in decreased fertility due to defects in pollen tube growth.O.I.H.G.
XAt3g03110821074XPO1BEncodes a member of the exportin family (XPO1B)which function as receptors for nuclear transport.Along with XPO1A involved in the development of male and female gametophytes.O.I.H.G.
XAt3g04690819627protein kinase family proteinF:protein serine/threonine kinase activity, protein kinase activity, kinase activity, ATP binding;P:protein amino acid phosphorylation;C:endomembrane system;MPOBFVAO.I.H.G.
XAt3g08970820049ATERDJ3AJ domain protein localized in ER lumen. Can compensate for the growth defect in jem1 scj1 mutant yeast. Also shows similarity to HSP40 proteins and is induced by heat stress. At high temperatures, mutant alleles are not transmitted through the pollen due to defects in pollen tube growth.O.I.H.G.
XAt3g09840820142CDC48 (CELL DIVISION CYCLE 48)Encodes a cell division cycle protein, a member of AAA-type ATPases gene family. Expressed throughout the plant in regions of cell division. Within the cell, sub-cellular localization varies depending on the stage of the cell cycle.Mutants in which the expression of CDC48A is altered show defects in cytokinesis, cell expansion and cell differentiation.O.I.H.G.
XAt3g10380820201SEC8 (SUBUNIT OF EXOCYST COMPLEX 8)Subunit of the Putative Arabidopsis Exocyst ComplexO.I.H.G.
XAt3g12160820393RABA4D (RAB GTPASE HOMOLOG A4D)Encodes RABA4D, a member of the Arabidopsis RabA4 subfamily of Rab GTPase proteins. It is transported in exocytic vesicles to the apical tip of pollen tubes where it appears to promote tip growth. Proper localization of RabA4d depends on ROP1, RIC3, and RIC4 activity.O.I.H.G.
XAt3g12690820450AGC1.5 (AGC KINASE 1.5)Encodes a putative serine/threonine kinase It is expressed specifically in pollen and appears to function redundantly with AGC1.7 to regulate polarized growth of pollen tubes.O.I.H.G.
XAt3g16640820916TCTP (TRANSLATIONALLY CONTROLLED TUMOR PROTEIN)Encodes a protein homologous to translationally controlled tumor protein (TCTP) from Drosophila. In flies, TCTP functions guanine nucleotide exchange factor in the TOR signaling pathway. TCTP is expressed throughout the plant with highest levels seen in meristematic regions of the shoot and root. Loss of function alleles are not transmitted through the male gametophyte due to defects in pollen tube growth. Hypomorphs, generated through RNAi, are dwarf and have smaller cells. These plants also have defects in lateral and primary root growth as well as root hair growth. The phenotypes are similar to TOR mutants suggesting that TCTP functions in the is pathway in Arabidopsis as well.O.I.H.G.
XAt3g17220820981PMEI2Pectin methylesterase inhibitor AtPMEI2. Inactivates AtPPME1 in vitro. Localized to Brefeldin A-induced compartments, and was found in FYVE-induced endosomal aggregates.O.I.H.G.
XAt3g22200821784POP2 (POLLEN-PISTIL INCOMPATIBILITY 2)Genetically redundant with POP3;mediates pollen tube guidance. Double mutants are self sterile; gamma-aminobutyrate transaminase subunit precursor; nuclear gene for mitochondrial product. Encodes gamma-aminobutyrate transaminase that uses pyruvate instead of alpha-ketoglutarate as cosubstrate. Mutations in POP2/HER1 render roots resistant to the inhibitory growth effects of the volatile organic compound E-2-hexenal implicated in plant defense.O.I.H.G.
XAt3g23380821919RIC5 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 5)encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). Interacts with Rop1 and is involved in pollen tube growth and function. Gene is expressed predominantly in inflorescence and flower tissue.O.I.H.G.
XAt3g51300824293ROP1 (RHO-RELATED PROTEIN FROM PLANTS 1)Encodes a pollen-specific Rop GTPase, member of the Rho family of small GTP binding proteins that interacts with RIC3 and RIC4 to control tip growth in pollen tubes. These three proteins promote the proper targeting of exocytic vesicles in the pollen tube tip. ROP1 activity is regulated by the REN1 GTPase activator protein.O.I.H.G.
XAt3g56640824831exocyst complex subunit Sec15-like family proteinF:unknown;P:pollen germination, pollen tube growth;C:exocyst;MFPOAO.I.H.G.
XAt3g56960824863PIP5K4 (PHOSPHATIDYL INOSITOL MONOPHOSPHATE 5 KINASE 4)Encodes a protein with phosphatidylinositol-4-phosphate 5-kinase activity that plays a role in pollen tip growth. The enzyme localizes to the apical plasma membrane and adjacent cytosolic region of pollen tubes. Overexpression of this gene leads to increased deposition of pectin in the cell wall at the tip of the pollen tube and causes altered pollen tube morphology.O.I.H.G.
XAt3g57670824936NTT (NO TRANSMITTING TRACT)F:transcription factor activity, zinc ion binding, nucleic acid binding;P:pollen tube growth, regulation of transcription;C:intracellular, chloroplast;MPOFVBAO.I.H.G.
XAt4g02350828060exocyst complex subunit Sec15-like family proteinF:molecular_function unknown;P:pollen germination, pollen tube growth;C:plasma membrane, membrane, exocyst;MFPOO.I.H.G.
XAt4g04900825829RIC10 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 10)encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). Most similar to RIC9 and RIC11 (subfamily group I). Gene is expressed predominantly in roots, leaves, and seedlings.O.I.H.G.
XAt4g28560828974RIC7 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 7)encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). Most similar to RIC6 and RIC8 (subfamily group II). Gene is expressed in all tissues examined.O.I.H.G.
XAt4g34940829646ARO1 (ARMADILLO REPEAT ONLY 1)Armadillo repeat protein. One of a family of four in Arabidopsis. Located in the nucleus and cytoplasm of pollen vegetative cells, and in the cytoplasm of egg cells. Involved in the signaling network controlling tip growth and actin organization in the pollen tube.O.I.H.G.
XAt4g38430830000ROPGEF1Member of the RopGEF (guanine nucleotide exchange factor) family, containing the novel PRONE domain (plant-specific Rop nucleotide exchanger), which is exclusively active towards members of the Rop subfamily, also known as DUF315). Interacts with ROP1 but the whole protein lacks Rho guanyl-nucleotide exchange factor activity in vitro. The DUF315/PRONE domain is sufficient to confer RopGEF catalytic activity.O.I.H.G.
XAt5g01180831725PTR5 (PEPTIDE TRANSPORTER 5)Encodes a dipeptide transporter expressed in pollen and ovules during early seed development. GFP-tagged PTR5 localizes to the plasma membrane.O.I.H.G.
XAt5g07370830628IPK2a (INOSITOL POLYPHOSPHATE KINASE 2 ALPHA)Encodes inositol polyphosphate kinase, which phosphorylates inositol 1,4,5-triphosphate and inositol 1,3,4,5-tetrakisphosphate to generate inositol 1,3,4,5,6-pentakisphosphateO.I.H.G.
XAt5g09350830794PI-4KBETA2 (PHOSPHATIDYLINOSITOL 4-OH KINASE BETA2)Encodes a phosphatidylinositol 4-OH kinase, PI-4Kbeta2. Arabidopsis contains 12 PI-4Ks in three separate families: PI-4Kalphs, PI-4kbeta, and PI-4Kgamma. PI-4Kbeta2 is 83% identical to PI-4kbeta1 encoded by At5g64070. Important for polarized root hair growth as the loss of this gene and its close relative PI-4kbeta1, leads to the formation of abnormal root hairs.O.I.H.G.
XAt5g14380831289AGP6 (Arabinogalactan proteins 6)Encodes an arabinogalactan protein that is expressed in pollen, pollen sac and pollen tube. Loss of AGP6 function results in decreased fertility due to defects in pollen tube growth.O.I.H.G.
XAt5g14870831339CNGC18 (CYCLIC NUCLEOTIDE-GATED CHANNEL 18)Encodes a member of the cyclic nucleotide gated channel family that is asymmetrically localized to the plasma membrane at the growing tip of the pollen tube and is involved in pollen tube growth. It likely directly transduces a cNMP signal into an ion flux that can produce a localized signal capable of regulating the pollen tip-growth machinery.O.I.H.G.
XAt5g16490831510RIC4 (ROP-INTERACTIVE CRIB MOTIF-CONTAINING PROTEIN 4)encodes a member of a novel protein family that contains contain a CRIB (for Cdc42/Rac-interactive binding) motif required for their specific interaction with GTP-bound Rop1 (plant-specific Rho GTPase). It interacts with Rop1 and is involved in pollen tube growth and function, and exocytosis in the pollen tube tip. Protein most similar to RIC2 (family subgroup V). Gene is expressed in all tissues examined.Interacts with ROP2 during pavement cell morphogenesis and with ROP1 to promote apical F-actin assembly.O.I.H.G.
XAt5g17020831565XPO1AEncodes a member of the exportin protein family (XPO1A) which functions as receptors for nuclear export. Binds to a variety of proteins having leucine rich export signals.Along with XPO1B involved with development of the male and female gametophytes.O.I.H.G.
XAt5g27540832814MIRO1 (Miro-related GTP-ase 1)Encodes a protein with similarity to GTPases that is localized to the mitochondrion. Involved in embryogenesis, pollen tube growth and required for mitochondrial development.O.I.H.G.
XAt5g28680832975protein kinase family proteinF:protein serine/threonine kinase activity, protein kinase activity, kinase activity, ATP binding;P:protein amino acid phosphorylation;C:endomembrane system;MPOBFVAO.I.H.G.
XAt5g55810835675AtNMNAT (A. thaliana nicotinate/nicotinamide mononucleotide adenyltransferase)encodes a bi-functional enzyme that expresses both nicotinamide-nucleotide adenylyltransferase (2.7.7.1) and nicotinate-nucleotide adenylyltransferase (2.7.7.18)activity.O.I.H.G.
XAt5g64070836528PI-4KBETA1 (PHOSPHATIDYLINOSITOL 4-OH KINASE BETA1)Encodes a phosphatidylinositol 4-OH kinase, PI-4Kbeta1. Arabidopsis contains 12 PI-4Ks in three separate families: PI-4Kalphs, PI-4kbeta, and PI-4Kgamma. PI-4Kbeta1 is 83% identical to PI-4kbeta2 encoded by At5g09350. Interacts with the RabA4b GTPase. Important for polarized root hair growth as the loss of this gene and its close relative PI-4kbeta2, leads to the formation of abnormal root hairs.O.I.H.G.
SAt2g47040819318VGD1 (VANGUARD1)Share high homologies with a group of pectin methylesterases (PME), pollen specific, and is required for enhancing the growth of pollen tube in style and transmitting tract tissues.O.I.H.G.



The upper GO terms

Process ID Gene number Process name
GO:00099329Growth that occurs specifically at the tip of a cell.
GO:00485880The growth of a cell, where growth contributes to the progression of the cell over time from one condition to another.
GO:004886821The process whose specific outcome is the progression of a pollen tube over time, from its initial formation to a mature structure.



The lower GO terms

Process ID Gene number Process name





Comparison with co-expressed genes



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