Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2010-6-29
pubmed:abstractText
Previous work has provided evidence that plants may require boron to maintain adequate levels of pyrimidine nucleotides, suggesting that the state of boron deficiency may actually be one of pyrimidine starvation. Since the availability of pyrimidine nucleotides is influenced by their rates of synthesis, salvage, and catabolism, we compared these activities in the terminal 3 centimeters of roots excised from boron-deficient and -sufficient squash plants (Cucurbita pepo L.). Transferring 5-day-old squash plants to a boron-deficient nutrient solution resulted in cessation of root elongation within 18 hours. However, withholding boron for up to 30 hours did not result in either impaired de novo pyrimidine biosynthesis or a change in the sensitivity of the de novo pathway to regulation by end product inhibition. Boron deprivation had no significant effect on pyrimidine salvage or catabolism. These results provide evidence that boron-deficient plants are not starved for uridine nucleotides collectively. Whether a particular pyrimidine nucleotide or derivative is limiting during boron deprivation remains to be examined.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-13607480, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-14223709, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16652481, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16655010, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16655382, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16655501, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16656140, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16656654, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16657849, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16658968, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16659961, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16659987, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16659990, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16660691, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16661010, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16661172, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-16661303, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-17792926, http://linkedlifedata.com/resource/pubmed/commentcorrection/16662114-26347
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Dec
pubmed:issn
0032-0889
pubmed:author
pubmed:issnType
Print
pubmed:volume
68
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1389-94
pubmed:dateRevised
2010-9-14
pubmed:year
1981
pubmed:articleTitle
Synthesis, salvage, and catabolism of uridine nucleotides in boron-deficient squash roots.
pubmed:affiliation
Department of Botany, University of Rhode Island, Kingston, Rhode Island 02881.
pubmed:publicationType
Journal Article