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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
MeSH Review

Plant Roots

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Disease relevance of Plant Roots


High impact information on Plant Roots


Chemical compound and disease context of Plant Roots

  • These results indicate that the primary target of proton toxicity may be linked to a disturbance of the stability in the pectic polysaccharide network, where calcium plays a key role in plant roots [11].
  • These results appear to be the first report of an increase in nitrate uptake by plant roots under anoxia of tomato at the early fruiting stage, and the rates of nitrite release in nutrient medium by the asphyxiated roots are the fastest yet reported [12].

Biological context of Plant Roots

  • The ATP effects may be attributable to the disturbance of auxin distribution in roots by exogenously applied ATP, because extracellular ATP can alter the pattern of auxin-induced gene expression in DR5-beta-glucuronidase transgenic plants and increase the response sensitivity of plant roots to exogenously added auxin [13].
  • The plant root tip represents a fascinating model system for studying changes in Golgi stack architecture associated with the developmental progression of meristematic cells to gravity sensing columella cells, and finally to "young" and "old", polysaccharide-slime secreting peripheral cells [14].
  • We have analyzed aquaporin family structure and expression using the A. thaliana genome sequence, and introduce a new NMR approach for the purpose of analyzing water movement in plant roots in vivo [15].

Anatomical context of Plant Roots


Associations of Plant Roots with chemical compounds

  • These results show that extracellular phytase activity of plant roots is a significant factor in the utilization of phosphorus from phytate and indicate that opportunity exists for using gene technology to improve the ability of plants to utilize accumulated forms of soil organic phosphorus [17].
  • The results obtained show that plant roots respond to low external pH by a sustained elevation in [Ca2+]c. In the presence of aluminium, this pH-mediated elevation in [Ca2+]c does not occur, therefore any potential calcium-mediated protection against low pH is likely to be irreversibly inhibited [18].
  • This agreed with the previous observation that 15 mM NO3- short-circuits the plant root PM H+-ATPase at its optimal pH of 6.5 [16].
  • Plant roots secrete a complex polysaccharide mucilage that may provide a significant source of carbon for microbes that colonize the rhizosphere [19].
  • More importantly, inoculation of sunflower roots with the engineered rhizobacterium resulted in a marked decrease in cadmium phytotoxicity and a 40% increase in cadmium accumulation in the plant root [20].

Gene context of Plant Roots

  • Inactivation of nirK had no significant effect on the ability of A. tumefaciens to bind to plant roots regardless of the oxygen tension, but it did decrease the occurrence of root-associated fluorescent cells [21].
  • We show here that the expression pattern of RAT5 correlates with plant root cells most susceptible to transformation [22].
  • New data supporting the relevance of this gene to plant-microbe interactions show that a bioS-gusA reporter fusion is expressed by bacteria on plant roots, by bacteria in alfalfa root nodules, and more generally by any stationary-phase bacterial cells in the presence of biotin [23].
  • Removal of plant roots before transferring the plants to high-salt conditions reduced only slightly the accumulation of BADH transcripts in the leaves [24].
  • This paper tests directly the hypothesis that the dominant KIR channel in plant roots (AKT1) does not contribute significantly to Cs(+) uptake by comparing Cs(+) uptake into wild-type and the akt1 knockout mutant of Arabidopsis thaliana (L.) Heynh [25].


  1. Calcium spiking in plant root hairs responding to Rhizobium nodulation signals. Ehrhardt, D.W., Wais, R., Long, S.R. Cell (1996) [Pubmed]
  2. Repression of Pseudomonas putida phenanthrene-degrading activity by plant root extracts and exudates. Rentz, J.A., Alvarez, P.J., Schnoor, J.L. Environ. Microbiol. (2004) [Pubmed]
  3. Isolation and characterization of phenol-degrading denitrifying bacteria. van Schie, P.M., Young, L.Y. Appl. Environ. Microbiol. (1998) [Pubmed]
  4. Aluminium resistance requires resistance to acid stress: a case study with spinach that exudes oxalate rapidly when exposed to Al stress. Yang, J.L., Zheng, S.J., He, Y.F., Matsumoto, H. J. Exp. Bot. (2005) [Pubmed]
  5. International Commission for Protection against Environmental Mutagens and Carcinogens. ICPEMC Working Paper No. 15/1. Genetic effects of ethanol. Obe, G., Anderson, D. Mutat. Res. (1987) [Pubmed]
  6. AtKuP1: a dual-affinity K+ transporter from Arabidopsis. Fu, H.H., Luan, S. Plant Cell (1998) [Pubmed]
  7. Hydrogen peroxide mediates plant root cell response to nutrient deprivation. Shin, R., Schachtman, D.P. Proc. Natl. Acad. Sci. U.S.A. (2004) [Pubmed]
  8. AtHKT1 is a salt tolerance determinant that controls Na(+) entry into plant roots. Rus, A., Yokoi, S., Sharkhuu, A., Reddy, M., Lee, B.H., Matsumoto, T.K., Koiwa, H., Zhu, J.K., Bressan, R.A., Hasegawa, P.M. Proc. Natl. Acad. Sci. U.S.A. (2001) [Pubmed]
  9. Plant members of a family of sulfate transporters reveal functional subtypes. Smith, F.W., Ealing, P.M., Hawkesford, M.J., Clarkson, D.T. Proc. Natl. Acad. Sci. U.S.A. (1995) [Pubmed]
  10. Regulation of plant symbiosis receptor kinase through serine and threonine phosphorylation. Yoshida, S., Parniske, M. J. Biol. Chem. (2005) [Pubmed]
  11. Brief exposure to low-pH stress causes irreversible damage to the growing root in Arabidopsis thaliana: pectin-Ca interaction may play an important role in proton rhizotoxicity. Koyama, H., Toda, T., Hara, T. J. Exp. Bot. (2001) [Pubmed]
  12. Nitrate uptake and nitrite release by tomato roots in response to anoxia. Morard, P., Silvestre, J., Lacoste, L., Caumes, E., Lamaze, T. J. Plant Physiol. (2004) [Pubmed]
  13. Extracellular ATP inhibits root gravitropism at concentrations that inhibit polar auxin transport. Tang, W., Brady, S.R., Sun, Y., Muday, G.K., Roux, S.J. Plant Physiol. (2003) [Pubmed]
  14. Macromolecular differentiation of Golgi stacks in root tips of Arabidopsis and Nicotiana seedlings as visualized in high pressure frozen and freeze-substituted samples. Staehelin, L.A., Giddings, T.H., Kiss, J.Z., Sack, F.D. Protoplasma (1990) [Pubmed]
  15. From genome to function: the Arabidopsis aquaporins. Quigley, F., Rosenberg, J.M., Shachar-Hill, Y., Bohnert, H.J. Genome Biol. (2002) [Pubmed]
  16. Electrophysiological study with oxonol VI of passive NO3- transport by isolated plant root plasma membrane. Pouliquin, P., Grouzis, J., Gibrat, R. Biophys. J. (1999) [Pubmed]
  17. Extracellular secretion of Aspergillus phytase from Arabidopsis roots enables plants to obtain phosphorus from phytate. Richardson, A.E., Hadobas, P.A., Hayes, J.E. Plant J. (2001) [Pubmed]
  18. Low-pH-mediated elevations in cytosolic calcium are inhibited by aluminium: a potential mechanism for aluminium toxicity. Plieth, C., Sattelmacher, B., Hansen, U.P., Knight, M.R. Plant J. (1999) [Pubmed]
  19. Root mucilage from pea and its utilization by rhizosphere bacteria as a sole carbon source. Knee, E.M., Gong, F.C., Gao, M., Teplitski, M., Jones, A.R., Foxworthy, A., Mort, A.J., Bauer, W.D. Mol. Plant Microbe Interact. (2001) [Pubmed]
  20. Engineering plant-microbe symbiosis for rhizoremediation of heavy metals. Wu, C.H., Wood, T.K., Mulchandani, A., Chen, W. Appl. Environ. Microbiol. (2006) [Pubmed]
  21. Expression of nitrite and nitric oxide reductases in free-living and plant-associated Agrobacterium tumefaciens C58 cells. Baek, S.H., Shapleigh, J.P. Appl. Environ. Microbiol. (2005) [Pubmed]
  22. Expression of the Arabidopsis histone H2A-1 gene correlates with susceptibility to Agrobacterium transformation. Yi, H., Mysore, K.S., Gelvin, S.B. Plant J. (2002) [Pubmed]
  23. BioS, a biotin-induced, stationary-phase, and possible LysR-type regulator in Sinorhizobium meliloti. Heinz, E.B., Phillips, D.A., Streit, W.R. Mol. Plant Microbe Interact. (1999) [Pubmed]
  24. Expression of the betaine aldehyde dehydrogenase gene in barley in response to osmotic stress and abscisic acid. Ishitani, M., Nakamura, T., Han, S.Y., Takabe, T. Plant Mol. Biol. (1995) [Pubmed]
  25. Influx and accumulation of Cs(+) by the akt1 mutant of Arabidopsis thaliana (L.) Heynh. lacking a dominant K(+) transport system. Broadley, M.R., Escobar-Gutiérrez, A.J., Bowen, H.C., Willey, N.J., White, P.J. J. Exp. Bot. (2001) [Pubmed]
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