Abstract
The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells. There was a developmental gradient of polysome content in which the dividing tissue had the highest levels and the mature tissue the lowest. A few hours after transplanting the seedlings to vermiculite having low water content (water potential Psi(w) = -0.29 megapascals), stem growth rate decreased to 30% of well-watered controls and the polysome content decreased most in the dividing and elongating tissues. After 24 to 36 hours, stem growth and polysome content recovered gradually. In vitro translation products of polysomal mRNA from dividing, elongating or mature tissue were examined on two-dimensional gels. In well-watered controls, each of the stem regions was enriched in a small subset of the polysomal mRNA population, probably because of developmentally regulated gene expression. Exposing plants to low Psi(w) for 24 hours induced a change in the relative abundance of a small number of polysomal mRNAs in the elongating and mature tissues, but not in the dividing tissue. After 24 to 72 hours at low Psi(w), the changes in polysomal mRNA population were reversed in the elongating tissue. The data indicate that changes in stem growth at low water potential are associated with changes in polysome status and polysomal mRNA in the elongating tissue.
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Claims 9
Claim · model-written summary
Dividing stem tissue of soybean had the highest polysome content and mature tissue the lowest
- Taxon
- Glycine max
Glycine maxe0 - Organ / stage
- dividing tissuee1
- Outcome
- polysome contente1
- Direction
- higheste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells”
e1“There was a developmental gradient of polysome content in which the dividing tissue had the highest levels and the mature tissue the lowest”
Claim · model-written summary
Low water content of the vermiculite reduced soybean stem growth rate to 30% of well-watered controls
- Taxon
- Glycine maxGlycine maxe0
- Treatment
- vermiculite having low water contente2
- Outcome
- stem growth ratee2
- Direction
- decreasede2
- Value
- 30%e2
- Comparator
- well-watered controlse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dark-grown soybean (Glycine max [L.] Merr.) stems”
e2“A few hours after transplanting the seedlings to vermiculite having low water content (water potential Psi(w) = -0.29 megapascals), stem growth rate decreased to 30% of well-watered controls”
Claim · model-written summary
Low water content decreased polysome content most in dividing and elongating soybean stem tissues
- Taxon
- Glycine maxGlycine maxe0
- Organ / stage
- dividing and elongating tissuese3
- Treatment
- vermiculite having low water contente2
- Outcome
- polysome contente3
- Direction
- decreased moste3
- Comparator
- well-watered controlse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“A few hours after transplanting the seedlings to vermiculite having low water content (water potential Psi(w) = -0.29 megapascals), stem growth rate decreased to 30% of well-watered controls”
e0“dark-grown soybean (Glycine max [L.] Merr.) stems”
e3“the polysome content decreased most in the dividing and elongating tissues”
Claim · model-written summary
Stem growth and polysome content recovered gradually after 24 to 36 hours
- Taxon
- Glycine maxGlycine maxe0
- Outcome
- stem growth and polysome contente4
- Direction
- recoverede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells”
e4“After 24 to 36 hours, stem growth and polysome content recovered gradually”
Claim · model-written summary
In well-watered controls, each stem region was enriched in a small subset of polysomal mRNA, probably because of developmentally regulated gene expression
- Taxon
- Glycine maxGlycine maxe0
- Organ / stage
- stem regionse5
- Outcome
- a small subset of the polysomal mRNA populatione5
- Qualifier
- probably because of developmentally regulated gene expressione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells”
e5“In well-watered controls, each of the stem regions was enriched in a small subset of the polysomal mRNA population, probably because of developmentally regulated gene expression”
Claim · model-written summary
Low water potential for 24 hours changed the relative abundance of a small number of polysomal mRNAs in elongating and mature tissues
- Taxon
- Glycine maxGlycine maxe0
- Organ / stage
- elongating and mature tissuese6
- Treatment
- low Psi(w) for 24 hourse6
- Outcome
- relative abundance of a small number of polysomal mRNAse6
- Direction
- changee6
- Comparator
- dividing tissuee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells”
e6“Exposing plants to low Psi(w) for 24 hours induced a change in the relative abundance of a small number of polysomal mRNAs in the elongating and mature tissues, but not in the dividing tissue”
Claim · model-written summary
Low water potential for 24 hours did not change the relative abundance of polysomal mRNAs in dividing tissue
- Taxon
- Glycine maxGlycine maxe0
- Organ / stage
- dividing tissuee6
- Treatment
- low Psi(w) for 24 hourse6
- Outcome
- relative abundance of a small number of polysomal mRNAse6
- Direction
- no_changeinferrede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells”
e6“Exposing plants to low Psi(w) for 24 hours induced a change in the relative abundance of a small number of polysomal mRNAs in the elongating and mature tissues, but not in the dividing tissue”
Claim · model-written summary
Changes in polysomal mRNA population caused by low water potential were reversed in elongating tissue
- Taxon
- Glycine maxGlycine maxe0
- Organ / stage
- elongating tissuee7
- Treatment
- low Psi(w)e7
- Outcome
- changes in polysomal mRNA populatione7
- Direction
- reversede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells”
e7“After 24 to 72 hours at low Psi(w), the changes in polysomal mRNA population were reversed in the elongating tissue”
Claim · model-written summary
Changes in stem growth at low water potential are associated with changes in polysome status and polysomal mRNA in elongating tissue
- Taxon
- Glycine maxGlycine maxe0
- Organ / stage
- elongating tissuee1
- Treatment
- low water potentiale1
- Outcome
- changes in polysome status and polysomal mRNAe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The polysome status and populations of polysomal mRNA were examined in different regions of dark-grown soybean (Glycine max [L.] Merr.) stems that contained either dividing, elongating, or mature (nongrowing) cells”
e1“changes in stem growth at low water potential are associated with changes in polysome status and polysomal mRNA in the elongating tissue”
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See all 22 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.