Abstract
A new sensitive root auxanometer is described. The auxanometer represents an adaption of the position-sensor transducer method to measurement of intact root elongation and has the advantages of simplicity and high sensitivity. Experiments with the auxanometer show that auxin begins to inhibit intact pea root elongation within 10 minutes and continues to inhibit elongation for at least 1 hour following a 1-hour treatment with the hormone. Exposure of pea roots to pH 4 results in a 2- to 3-fold increase in elongation rate beginning about 1 minute after acid treatment. Acid-induced elongation continues at a steady rate for at least 160 minutes and can be reinitiated repeatedly by shifting between pH 4 and 6.5. Auxin inhibits acid-induced elongation whether given before or after acidification, and a transient exposure to auxin renders intact roots relatively insensitive to acid for at least 1 hour after withdrawal of the hormone.
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 7
Claim · model-written summary
The root auxanometer offers simplicity and high sensitivity for intact root elongation measurement.
Verbatim
e0“The auxanometer represents an adaption of the position-sensor transducer method to measurement of intact root elongation and has the advantages of simplicity and high sensitivity.”
Claim · model-written summary
Auxin began inhibiting intact pea root elongation within 10 minutes and inhibition lasted at least 1 hour after treatment.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- auxine0
- Outcome
- intact pea root elongatione0
- Direction
- inhibite0
- Value
- 10 minutese0
- Qualifier
- for at least 1 hour following a 1-hour treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Experiments with the auxanometer show that auxin begins to inhibit intact pea root elongation within 10 minutes and continues to inhibit elongation for at least 1 hour following a 1-hour treatment with the hormone.”
Claim · model-written summary
Exposure to pH 4 increased pea root elongation rate two to threefold after about one minute.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- pH 4e0
- Outcome
- elongation ratee0
- Direction
- increasee0
- Value
- 2- to 3-folde0
- Qualifier
- beginning about 1 minute after acid treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exposure of pea roots to pH 4 results in a 2- to 3-fold increase in elongation rate beginning about 1 minute after acid treatment.”
Claim · model-written summary
Acid induced elongation continued steadily for at least 160 minutes.
Not reportedTaxon
Verbatim
e0“Acid-induced elongation continues at a steady rate for at least 160 minutes and can be reinitiated repeatedly by shifting between pH 4 and 6.5.”
Claim · model-written summary
Shifting between pH 4 and 6.5 repeatedly reinitiated acid induced elongation.
Not reportedTaxonComparator
Verbatim
e0“Acid-induced elongation continues at a steady rate for at least 160 minutes and can be reinitiated repeatedly by shifting between pH 4 and 6.5.”
Claim · model-written summary
Auxin inhibited acid induced elongation whether applied before or after acidification.
- Treatment
- Auxine0
- Outcome
- acid-induced elongatione0
- Direction
- inhibitse0
- Qualifier
- whether given before or after acidificatione0
Not reportedTaxonComparator
Verbatim
e0“Auxin inhibits acid-induced elongation whether given before or after acidification, and a transient exposure to auxin renders intact roots relatively insensitive to acid for at least 1 hour after withdrawal of the hormone.”
Claim · model-written summary
Transient auxin exposure left intact roots relatively insensitive to acid for at least one hour after withdrawal.
- Treatment
- a transient exposure to auxine0
- Outcome
- intact roots relatively insensitive to acide0
- Direction
- relatively insensitivee0
- Value
- at least 1 houre0
Not reportedTaxonComparator
Verbatim
e0“Auxin inhibits acid-induced elongation whether given before or after acidification, and a transient exposure to auxin renders intact roots relatively insensitive to acid for at least 1 hour after withdrawal of the hormone.”
The same questions in other papers
ph · growth · Lathyrus oleraceus (pea)Positive and negative results
1 in the opposite direction
- no effect
class · growth · Lathyrus oleraceus (pea)Positive and negative results
14 papers in the same direction as this paper · 22 in the opposite direction
- positive
- positive
- positive
33 papers more in this group
See all 37 papers →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.