Paper · 1979 · Plant and Cell Physiology

Changes in non-histone chromosomal proteins during the development of potato tubers; their involvement in wound- and hormone-induced processes

Günter Kahl; Willi Schäfer; Manfred Wechselberger

8
claims
16
verbatim quotes
14
citations
3
research areas
—
Not open access

Abstract

The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.). With increasing age some NHC proteins evidently become eliminated. Consequently the electrophoretic pattern of these proteins is strictly dependent on the developmental stage of the organ. Wounding and treatment of wounded tissues with 10−7M gibberellic acid (GA3) drastically influence the pattern of NHC proteins in potato tuber tissues. Although actively growing organs respond to injury by increased synthesis of the NHC proteins already present in the intact tuber, older tubers react with the formation of new NHC proteins. By contrast, sprouts loose many NHC proteins, if wounded or wounded and concomitantly treated with GA3. Wounding and treatment of wounded tuber parenchyma with GA3 both induce qualitative changes in NHC proteins: these proteins become highly active in restoring the histone-inhibited transcription of DNA in vitro, whereas in the intact resting tuber they are virtually inactive. Our present results support the hypothesis that hormones govern the quality of NHC proteins of a given tissue and through this the quality of transcription.

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Claims 8

Observationobservedoriginal resultmeasured

Claim · model-written summary

The electrophoretic pattern of non-histone chromosomal proteins changes specifically during formation, dormancy and sprouting of potato tubers.

Taxon
Solanum tuberosumSolanum tuberosume1
Organ / stage
formation, dormancy and sproutinge1
Outcome
electrophoretic pattern of non-histone chromosomal proteinse1

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

With increasing age, some non-histone chromosomal proteins are eliminated from potato tubers.

Taxon
Solanum tuberosumSolanum tuberosume1
Outcome
some NHC proteinse2
Qualifier
With increasing agee2

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e2

“With increasing age some NHC proteins evidently become eliminated”

✓ located verbatim in the source · abstract, characters 192–257 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Wounding and GA3 treatment of wounded tissues drastically change the pattern of NHC proteins in potato tuber tissues.

Taxon
Solanum tuberosumSolanum tuberosume1
Organ / stage
potato tuber tissuese3
Treatment
Wounding and treatment of wounded tissues with 10−7M gibberellic acid (GA3)e3
Outcome
pattern of NHC proteinse3

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e3

“Wounding and treatment of wounded tissues with 10−7M gibberellic acid (GA3) drastically influence the pattern of NHC proteins in potato tuber tissues”

✓ located verbatim in the source · abstract, characters 381–530 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Actively growing organs respond to injury by increased synthesis of the NHC proteins already present in the intact tuber.

Taxon
Solanum tuberosumSolanum tuberosume1
Organ / stage
actively growing organse4
Treatment
injurye4
Outcome
synthesis of the NHC proteinse4
Direction
increasede4
Comparator
intact tubere4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e4

“actively growing organs respond to injury by increased synthesis of the NHC proteins already present in the intact tuber”

✓ located verbatim in the source · abstract, characters 541–661 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Older tubers form new NHC proteins after injury.

Taxon
Solanum tuberosumSolanum tuberosume1
Organ / stage
older tuberse5
Treatment
injurye4
Outcome
formation of new NHC proteinse5

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e4

“actively growing organs respond to injury by increased synthesis of the NHC proteins already present in the intact tuber”

✓ located verbatim in the source · abstract, characters 541–661 · show in text ↑
e5

“older tubers react with the formation of new NHC proteins”

✓ located verbatim in the source · abstract, characters 663–720 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Sprouts lose many NHC proteins when they are wounded, or wounded and treated with GA3.

Taxon
Solanum tuberosumSolanum tuberosume1
Organ / stage
sproutse6
Treatment
wounded or wounded and concomitantly treated with GA3e6
Outcome
NHC proteinse6
Direction
loosee6

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e6

“sprouts loose many NHC proteins, if wounded or wounded and concomitantly treated with GA3”

✓ located verbatim in the source · abstract, characters 735–824 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Wounding and GA3 treatment of wounded parenchyma make NHC proteins highly active in restoring histone-inhibited transcription in vitro, whereas NHC proteins of the intact resting tuber are virtually inactive.

Taxon
Solanum tuberosumSolanum tuberosume1
Organ / stage
tuber parenchymae7
Treatment
Wounding and treatment of wounded tuber parenchyma with GA3e7
Outcome
restoring the histone-inhibited transcription of DNA in vitroe7
Qualifier
in vitroe7
Comparator
intact resting tubere7

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e7

“Wounding and treatment of wounded tuber parenchyma with GA3 both induce qualitative changes in NHC proteins: these proteins become highly active in restoring the histone-inhibited transcription of DNA in vitro, whereas in the intact resting tuber they are virtually inactive”

✓ located verbatim in the source · abstract, characters 826–1100 · show in text ↑
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

Hormones govern the quality of NHC proteins of a given tissue and, through them, the quality of transcription (hypothesis supported by the present results).

Taxon
Solanum tuberosumSolanum tuberosume1
Outcome
quality of transcriptione7
Qualifier
hormones govern the quality of NHC proteins of a given tissuee7

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“The electrophoretic pattern of non-histone chromosomal proteins (NHC proteins) changes specifically during the formation, dormancy and sprouting of white potato tubers (Solanum tuberosum L.)”

✓ located verbatim in the source · abstract, characters 0–190 · show in text ↑
e7

“hormones govern the quality of NHC proteins of a given tissue and through this the quality of transcription”

✓ located verbatim in the source · abstract, characters 1150–1257 · show in text ↑