Abstract
Abstract Maleic hydrazide (MH) inhibits corn root elongation through an effect on cell division apparently without inhibiting cell enlargement. The decrease in the rate of elongation was apparent only after a considerable lag, over 14 hours, even with a concentration as high as 5 mM. MH (1 mM) did not inhibit His growth of roots from corn seeds given very large doses of γ‐irradiation or excised corn root segments including the elongation Zone or the cell enlargement induced by IAA in corn coleoptile sections. Many compounds including purines, pyrimidines, nucleosides. cysteine, pyridoxal, pyruvate. kinetin and CoCl 2 , many of which had previously been reported to alleviate MH inhibition in other tissues, were tested for their ability to prevent the inhibition of corn root elongation by MH, but none were effective. These data do not support the theory that MH acts by inhibiting the synthesis of or competing with some simple metabolite or hormone. Whatever its mechanism of action the failure of MH to inhibit cell enlargement in most systems indicates that it is fairly selective.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Maleic hydrazide inhibited corn root elongation.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Maleic hydrazide (MH)e0
- Outcome
- corn root elongatione0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maleic hydrazide (MH) inhibits corn root elongation through an effect on cell division apparently without inhibiting cell enlargement”
Claim · model-written summary
Maleic hydrazide appears to inhibit corn root elongation through an effect on cell division, without inhibiting cell enlargement.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Maleic hydrazide (MH)e0
- Outcome
- corn root elongatione0
- Qualifier
- an effect on cell divisione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maleic hydrazide (MH) inhibits corn root elongation through an effect on cell division apparently without inhibiting cell enlargement”
Claim · model-written summary
The decrease in corn root elongation by maleic hydrazide appeared only after a lag of over 14 hours, even at 5 mM.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- a concentration as high as 5 mMe1
- Outcome
- rate of elongatione1
- Direction
- decreasee1
- Value
- over 14 hourse1
- Qualifier
- only after a considerable lage1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maleic hydrazide (MH) inhibits corn root elongation through an effect on cell division apparently without inhibiting cell enlargement”
e1“The decrease in the rate of elongation was apparent only after a considerable lag, over 14 hours, even with a concentration as high as 5 mM”
Claim · model-written summary
MH at 1 mM did not inhibit growth of roots from irradiated corn seeds.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- MH (1 mM)e2
- Outcome
- growth of roots from corn seedse2
- Direction
- did not inhibite2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maleic hydrazide (MH) inhibits corn root elongation through an effect on cell division apparently without inhibiting cell enlargement”
e2“MH (1 mM) did not inhibit His growth of roots from corn seeds given very large doses”
Claim · model-written summary
MH at 1 mM did not inhibit elongation of excised corn root segments.
- Taxon
- cornZea mays subsp. mayse3
- Organ / stage
- excised corn root segmentse3
- Treatment
- MH (1 mM)e2
- Outcome
- elongatione3
- Direction
- did not inhibite2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“MH (1 mM) did not inhibit His growth of roots from corn seeds given very large doses”
e3“or excised corn root segments including the elongation Zone”
Claim · model-written summary
MH at 1 mM did not inhibit the cell enlargement induced by IAA in corn coleoptile sections.
- Taxon
- cornZea mays subsp. mayse4
- Organ / stage
- corn coleoptile sectionse4
- Treatment
- MH (1 mM)e2
- Outcome
- cell enlargement induced by IAAe4
- Direction
- did not inhibite2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“MH (1 mM) did not inhibit His growth of roots from corn seeds given very large doses”
e4“or the cell enlargement induced by IAA in corn coleoptile sections”
Claim · model-written summary
Purines, pyrimidines, nucleosides and other tested compounds did not prevent the inhibition of corn root elongation by MH.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- purines, pyrimidines, nucleosidese6
- Outcome
- the inhibition of corn root elongation by MHe5
- Direction
- none were effectivee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maleic hydrazide (MH) inhibits corn root elongation through an effect on cell division apparently without inhibiting cell enlargement”
e5“were tested for their ability to prevent the inhibition of corn root elongation by MH, but none were effective”
e6“Many compounds including purines, pyrimidines, nucleosides”
Claim · model-written summary
These data do not support the theory that MH inhibits synthesis of, or competes with, a simple metabolite or hormone.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- corn root elongatione0
- Qualifier
- the theory that MH acts by inhibiting the synthesise7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maleic hydrazide (MH) inhibits corn root elongation through an effect on cell division apparently without inhibiting cell enlargement”
e7“These data do not support the theory that MH acts by inhibiting the synthesis of or competing with some simple metabolite or hormone”
The same questions in other papers
Maleic hydrazide · molecular: metabolites · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.