Experts and Doctors on hypocotyl in United States


Locale: United States
Topic: hypocotyl

Top Publications

  1. Burk D, Ye Z. Alteration of oriented deposition of cellulose microfibrils by mutation of a katanin-like microtubule-severing protein. Plant Cell. 2002;14:2145-60 pubmed
    ..These findings strongly support the hypothesis that cortical MTs regulate the oriented deposition of cellulose microfibrils that determines the direction of cell elongation. ..
  2. Yuan S, Wu Y, Cosgrove D. A fungal endoglucanase with plant cell wall extension activity. Plant Physiol. 2001;127:324-33 pubmed
    ..The strategy used here to identify Cel12A could be used to identify analogous plant enzymes that cause auxin-induced changes in cell wall rheology. ..
  3. Yamamoto K, Kiss J. Disruption of the actin cytoskeleton results in the promotion of gravitropism in inflorescence stems and hypocotyls of Arabidopsis. Plant Physiol. 2002;128:669-81 pubmed
    ..Furthermore, this is the first study to demonstrate a prominent actin MF network in endodermal cells in the putative gravity-perceiving cells in stems. ..
  4. Guan C, Rosen E, Boonsirichai K, Poff K, Masson P. The ARG1-LIKE2 gene of Arabidopsis functions in a gravity signal transduction pathway that is genetically distinct from the PGM pathway. Plant Physiol. 2003;133:100-12 pubmed
    ..Taken together, the results suggest that ARG1 and ARL2 function in the same gravity signal transduction pathway in the hypocotyl and root of Arabidopsis seedlings, distinct from the pathway involving PGM. ..
  5. Stone B, Stowe Evans E, Harper R, Celaya R, Ljung K, Sandberg G, et al. Disruptions in AUX1-dependent auxin influx alter hypocotyl phototropism in Arabidopsis. Mol Plant. 2008;1:129-44 pubmed publisher
    ..Moreover, we have found that the strength of dependence of hypocotyl phototropism on AUX1-mediated auxin influx is directly related to the auxin responsiveness of the seedling in question. ..
  6. Mager√ły M, Kowalik E, Folta K, Shinkle J. Evidence of physiological phototropin1 (phot1) action in response to UV-C illumination. Plant Signal Behav. 2010;5:1204-10 pubmed
    ..The work demonstrates in two species that UV-C has an effect on a rapid plant photomorphogenic response and that the response is partially mediated by the phot1 photoreceptor. ..
  7. Mulekar J, Bu Q, Chen F, Huq E. Casein kinase II ? subunits affect multiple developmental and stress-responsive pathways in Arabidopsis. Plant J. 2012;69:343-54 pubmed publisher
    ..Moreover, CK2 ? subunit mutants are also hyposensitive to a NaCl-induced blockage of seed germination. Taken together, these data suggest that CK2 ? subunits affect diverse developmental and stress responsive pathways in Arabidopsis. ..
  8. Doyle M, Davis S, Bastow R, McWatters H, Kozma Bognar L, Nagy F, et al. The ELF4 gene controls circadian rhythms and flowering time in Arabidopsis thaliana. Nature. 2002;419:74-7 pubmed
    ..Mutations in elf4 result in early flowering in non-inductive photoperiods, which is probably caused by elevated amounts of CONSTANS (CO), a gene that promotes floral induction. ..
  9. Wu J, Steinebrunner I, Sun Y, Butterfield T, Torres J, Arnold D, et al. Apyrases (nucleoside triphosphate-diphosphohydrolases) play a key role in growth control in Arabidopsis. Plant Physiol. 2007;144:961-75 pubmed
    ..These results imply that APY1 and APY2, like their homologs in animals, act to reduce the concentration of extracellular nucleotides, and that this function is important for the regulation of growth in Arabidopsis. ..

More Information


  1. Park Y, Cosgrove D. A revised architecture of primary cell walls based on biomechanical changes induced by substrate-specific endoglucanases. Plant Physiol. 2012;158:1933-43 pubmed publisher
    ..The structurally important xyloglucan may be located in limited regions of tight contact between microfibrils. ..
  2. Harris D, DeBolt S. Relative crystallinity of plant biomass: studies on assembly, adaptation and acclimation. PLoS ONE. 2008;3:e2897 pubmed publisher
  3. Ruppel N, Hangarter R. Mutations in a plastid-localized elongation factor G alter early stages of plastid development in Arabidopsis thaliana. BMC Plant Biol. 2007;7:37 pubmed
    ..Our identification of embryo-lethal mutant alleles in the Arabidopsis elongation factor G indicates that SCO1 is essential for plant growth, consistent with its predicted role in chloroplast protein translation. ..
  4. Moon J, Zhao Y, Dai X, Zhang W, Gray W, Huq E, et al. A new CULLIN 1 mutant has altered responses to hormones and light in Arabidopsis. Plant Physiol. 2007;143:684-96 pubmed
    ..Characterization of weak cul1 mutants provides insight into the role of SCFs throughout plant growth and development. ..
  5. Stanga J, Boonsirichai K, Sedbrook J, Otegui M, Masson P. A role for the TOC complex in Arabidopsis root gravitropism. Plant Physiol. 2009;149:1896-905 pubmed publisher
    ..They saltate like the wild type and sediment at wild-type rates upon gravistimulation. These data point to a role for the plastidic TOC complex in gravity signal transduction within the statocytes...
  6. Young L, Harrison B, Narayana Murthy U, Moffatt B, Gilroy S, Masson P. Adenosine kinase modulates root gravitropism and cap morphogenesis in Arabidopsis. Plant Physiol. 2006;142:564-73 pubmed
    ..Our data are consistent with a role for ADK and the S-adenosyl-L-methionine pathway in the control of root gravitropism and cap morphogenesis. ..
  7. Lucas J, Shaw S. Cortical microtubule arrays in the Arabidopsis seedling. Curr Opin Plant Biol. 2008;11:94-8 pubmed publisher
    ..Long-term time-lapse observations of the microtubule arrays in light-grown hypocotyl cells have revealed a striking process of microtubule patterning possibly linked to the creation of polylamellate cell walls. ..
  8. Ruppel N, Kropp K, Davis P, Martin A, Luesse D, Hangarter R. Mutations in GERANYLGERANYL DIPHOSPHATE SYNTHASE 1 affect chloroplast development in Arabidopsis thaliana (Brassicaceae). Am J Bot. 2013;100:2074-84 pubmed publisher
    ..Our results indicate that GGPS1 is a key gene in the chlorophyll biosynthetic pathway. ..
  9. Deslauriers S, Larsen P. FERONIA is a key modulator of brassinosteroid and ethylene responsiveness in Arabidopsis hypocotyls. Mol Plant. 2010;3:626-40 pubmed publisher
  10. Lucas J, Courtney S, Hassfurder M, Dhingra S, Bryant A, Shaw S. Microtubule-associated proteins MAP65-1 and MAP65-2 positively regulate axial cell growth in etiolated Arabidopsis hypocotyls. Plant Cell. 2011;23:1889-903 pubmed publisher
    ..We conclude that MAP65-1 and MAP65-2 play a critical role in the microtubule-dependent mechanism for specifying axial cell growth in the expanding hypocotyl, independent of any mechanical role in microtubule array organization. ..
  11. Haruta M, Sussman M. The effect of a genetically reduced plasma membrane protonmotive force on vegetative growth of Arabidopsis. Plant Physiol. 2012;158:1158-71 pubmed publisher
    ..Overall, this characterization of aha2 mutants provides an experimental and theoretical framework for investigating growth and signaling processes that are mediated by PMF-coupled energetics at the cell membrane. ..
  12. Robles L, Deslauriers S, Alvarez A, Larsen P. A loss-of-function mutation in the nucleoporin AtNUP160 indicates that normal auxin signalling is required for a proper ethylene response in Arabidopsis. J Exp Bot. 2012;63:2231-41 pubmed publisher
  13. Ruppel N, Logsdon C, Whippo C, Inoue K, Hangarter R. A mutation in Arabidopsis seedling plastid development1 affects plastid differentiation in embryo-derived tissues during seedling growth. Plant Physiol. 2011;155:342-53 pubmed publisher
    ..Although the exact function of SPD1 remains to be defined, our findings reveal aspects of plastid development unique to embryo-derived cells. ..
  14. Stewart J, Maloof J, Nemhauser J. PIF genes mediate the effect of sucrose on seedling growth dynamics. PLoS ONE. 2011;6:e19894 pubmed publisher
    ..PIFs have well-established roles as integrators of response to light levels, time of day and phytohormone signaling. Our findings strongly suggest that carbon availability can modify the known photomorphogenetic signaling network. ..
  15. Vineyard L, Elliott A, Dhingra S, Lucas J, Shaw S. Progressive transverse microtubule array organization in hormone-induced Arabidopsis hypocotyl cells. Plant Cell. 2013;25:662-76 pubmed publisher
  16. Alvarez S, He Y, Chen S. Comparative investigations of the glucosinolate-myrosinase system in Arabidopsis suspension cells and hypocotyls. Plant Cell Physiol. 2008;49:324-33 pubmed publisher
    ..Myrosinase levels and activities were also monitored. The molecular bases underlying the differences of glucosinolate metabolism in the suspension cells and hypocotyls were discussed. ..
  17. Jang J, Fujioka S, Tasaka M, Seto H, Takatsuto S, Ishii A, et al. A critical role of sterols in embryonic patterning and meristem programming revealed by the fackel mutants of Arabidopsis thaliana. Genes Dev. 2000;14:1485-97 pubmed
    ..The unique phenotypes and sterol composition in fk-J79 indicate crucial roles of sterol regulation and signaling in cell division and cell expansion in embryonic and post-embryonic development in plants. ..
  18. Salome P, Michael T, Kearns E, Fett Neto A, Sharrock R, McClung C. The out of phase 1 mutant defines a role for PHYB in circadian phase control in Arabidopsis. Plant Physiol. 2002;129:1674-85 pubmed
    ..The defect in circadian phasing is seen in seedlings entrained by a light-dark cycle but not in seedlings entrained by a temperature cycle. Thus, PHYB contributes light information critical for proper determination of circadian phase. ..
  19. Yuen C, Pearlman R, Silo Suh L, Hilson P, Carroll K, Masson P. WVD2 and WDL1 modulate helical organ growth and anisotropic cell expansion in Arabidopsis. Plant Physiol. 2003;131:493-506 pubmed
    ..Our observations suggest that at least two members of this gene family may modulate both rotational polarity and anisotropic cell expansion during organ growth. ..
  20. Iniguez A, Dong Y, Carter H, Ahmer B, Stone J, Triplett E. Regulation of enteric endophytic bacterial colonization by plant defenses. Mol Plant Microbe Interact. 2005;18:169-78 pubmed
    ..These observations suggest approaches to reduce contamination of raw produce by human enteric pathogens and to increase the number of growth-promoting bacteria in plants. ..
  21. Clark G, Cantero Garcia A, Butterfield T, Dauwalder M, Roux S. Secretion as a key component of gravitropic growth: implications for annexin involvement in differential growth. Gravit Space Biol Bull. 2005;18:113-4 pubmed
  22. Kim W, Hicks K, Somers D. Independent roles for EARLY FLOWERING 3 and ZEITLUPE in the control of circadian timing, hypocotyl length, and flowering time. Plant Physiol. 2005;139:1557-69 pubmed
    ..These results show that elf3-1 can derepress late flowering through a CO-independent mechanism. ELF3 may act at more than one juncture, possibly posttranscriptionally. ..
  23. Wang Y, Maruhnich S, Mageroy M, Justice J, Folta K. Phototropin 1 and cryptochrome action in response to green light in combination with other wavelengths. Planta. 2013;237:225-37 pubmed publisher
    ..These findings demonstrate how enriched green environments may adjust RL and BL photomorphogenic responses through both the crys and phot1 receptors, and define a new role for phot1 in stem growth promotion. ..
  24. Chiang Y, Zubo Y, Tapken W, Kim H, Lavanway A, Howard L, et al. Functional characterization of the GATA transcription factors GNC and CGA1 reveals their key role in chloroplast development, growth, and division in Arabidopsis. Plant Physiol. 2012;160:332-48 pubmed publisher
  25. Cantero A, Barthakur S, Bushart T, Chou S, Morgan R, Fernandez M, et al. Expression profiling of the Arabidopsis annexin gene family during germination, de-etiolation and abiotic stress. Plant Physiol Biochem. 2006;44:13-24 pubmed
  26. Wu G, Cameron J, Ljung K, Spalding E. A role for ABCB19-mediated polar auxin transport in seedling photomorphogenesis mediated by cryptochrome 1 and phytochrome B. Plant J. 2010;62:179-91 pubmed publisher
    ..The B19OE plant proved to be a useful tool for determining aspects of the mechanism by which light, acting through cry1 or phyB, influences the auxin transport process to control hypocotyl growth during de-etiolation...
  27. Wang L, Uilecan I, Assadi A, Kozmik C, Spalding E. HYPOTrace: image analysis software for measuring hypocotyl growth and shape demonstrated on Arabidopsis seedlings undergoing photomorphogenesis. Plant Physiol. 2009;149:1632-7 pubmed publisher
    ..HYPOTrace is expected to benefit seedling development research, particularly in the photomorphogenesis field, by replacing many tedious, error-prone manual measurements with a precise, largely automated computational tool...
  28. Bhave N, Veley K, Nadeau J, Lucas J, Bhave S, Sack F. TOO MANY MOUTHS promotes cell fate progression in stomatal development of Arabidopsis stems. Planta. 2009;229:357-67 pubmed publisher
    ..Finally, the consistent presence of a small number of dedifferentiated meristemoids in mature wild-type stems suggests that precursor cell arrest is a normal feature of Arabidopsis stem development. ..
  29. Yoshihara T, Spalding E, Iino M. AtLAZY1 is a signaling component required for gravitropism of the Arabidopsis thaliana inflorescence. Plant J. 2013;74:267-79 pubmed publisher
    ..The nuclear pool of the protein appears to be unnecessary for this function, which instead relies on a pool that appears to reside at the cell periphery. ..
  30. Christians M, Robles L, Zeller S, Larsen P. The eer5 mutation, which affects a novel proteasome-related subunit, indicates a prominent role for the COP9 signalosome in resetting the ethylene-signaling pathway in Arabidopsis. Plant J. 2008;55:467-77 pubmed publisher
  31. Harrison B, Masson P. ARL2, ARG1 and PIN3 define a gravity signal transduction pathway in root statocytes. Plant J. 2008;53:380-92 pubmed
    ..Together these data suggest that ARL2 and ARG1 functionally link gravity sensation in the statocytes to auxin redistribution through the root cap. ..
  32. Stephens N, Qi Z, Spalding E. Glutamate receptor subtypes evidenced by differences in desensitization and dependence on the GLR3.3 and GLR3.4 genes. Plant Physiol. 2008;146:529-38 pubmed
    ..4 molecule specifically affected only two of the classes. The resulting model is an important step toward understanding the biological roles of these enigmatic ion channels. ..
  33. McKinney E, Kandasamy M, Meagher R. Small changes in the regulation of one Arabidopsis profilin isovariant, PRF1, alter seedling development. Plant Cell. 2001;13:1179-91 pubmed
    ..The ability of profilin to regulate actin polymerization and participate directly in signal transduction pathways is discussed in light of the prf1-1 phenotypes. ..
  34. Lilley J, Gee C, Sairanen I, Ljung K, Nemhauser J. An endogenous carbon-sensing pathway triggers increased auxin flux and hypocotyl elongation. Plant Physiol. 2012;160:2261-70 pubmed publisher
    ..Thus, PIF transcription factors integrate growth with metabolic demands and thereby facilitate functional equilibrium during photomorphogenesis. ..
  35. Gu Y, Innes R. The KEEP ON GOING protein of Arabidopsis regulates intracellular protein trafficking and is degraded during fungal infection. Plant Cell. 2012;24:4717-30 pubmed publisher
  36. Cancel J, Larsen P. Loss-of-function mutations in the ethylene receptor ETR1 cause enhanced sensitivity and exaggerated response to ethylene in Arabidopsis. Plant Physiol. 2002;129:1557-67 pubmed
  37. Somers D, Kim W, Geng R. The F-box protein ZEITLUPE confers dosage-dependent control on the circadian clock, photomorphogenesis, and flowering time. Plant Cell. 2004;16:769-82 pubmed
    ..We also demonstrate that ZTL-dependent delay of flowering is mediated through decreases in CONSTANS and FLOWERING LOCUS T message levels, thus directly linking proteasome-dependent proteolysis to flowering. ..
  38. Okushima Y, Overvoorde P, Arima K, Alonso J, Chan A, Chang C, et al. Functional genomic analysis of the AUXIN RESPONSE FACTOR gene family members in Arabidopsis thaliana: unique and overlapping functions of ARF7 and ARF19. Plant Cell. 2005;17:444-63 pubmed
    ..These observations provide molecular insight into the unique and overlapping functions of ARF gene family members in Arabidopsis. ..
  39. Fuller B, Stevens S, Sehnke P, Ferl R. Proteomic analysis of the 14-3-3 family in Arabidopsis. Proteomics. 2006;6:3050-9 pubmed
  40. Rojas Pierce M, Titapiwatanakun B, Sohn E, Fang F, Larive C, Blakeslee J, et al. Arabidopsis P-glycoprotein19 participates in the inhibition of gravitropism by gravacin. Chem Biol. 2007;14:1366-76 pubmed
    ..Gravacin is an auxin transport inhibitor that inhibits PGPs, particularly PGP19, which can be used to further dissect the role of PGP19 without the inhibition of other auxin transporters, namely PIN proteins. ..
  41. Kim S, Punshon T, Lanzirotti A, Li L, Alonso J, Ecker J, et al. Localization of iron in Arabidopsis seed requires the vacuolar membrane transporter VIT1. Science. 2006;314:1295-8 pubmed
    ..We have uncovered a fundamental aspect of seed biology that will ultimately aid the development of nutrient-rich seed, benefiting both human health and agricultural productivity. ..
  42. Argyros R, Mathews D, Chiang Y, Palmer C, Thibault D, Etheridge N, et al. Type B response regulators of Arabidopsis play key roles in cytokinin signaling and plant development. Plant Cell. 2008;20:2102-16 pubmed publisher
    ..Our results support a model in which cytokinin regulates a wide array of downstream responses through the action of a multistep phosphorelay that culminates in transcriptional regulation by ARR1, ARR10, and ARR12. ..
  43. Binder B, Walker J, Gagne J, Emborg T, Hemmann G, Bleecker A, et al. The Arabidopsis EIN3 binding F-Box proteins EBF1 and EBF2 have distinct but overlapping roles in ethylene signaling. Plant Cell. 2007;19:509-23 pubmed
  44. Krysan P, Jester P, Gottwald J, Sussman M. An Arabidopsis mitogen-activated protein kinase kinase kinase gene family encodes essential positive regulators of cytokinesis. Plant Cell. 2002;14:1109-20 pubmed
    ..The molecular and structural phenotypes displayed by the double mutants support a model in which the ANP family of MAPKKKs positively regulates cell division and growth and may negatively regulate stress responses. ..
  45. Kim J, Dotson B, Rey C, Lindsey J, Bleecker A, Binder B, et al. New clothes for the jasmonic acid receptor COI1: delayed abscission, meristem arrest and apical dominance. PLoS ONE. 2013;8:e60505 pubmed publisher
    ..Our study opens the door revealing new roles for JA and its interaction with other hormones during plant development. ..