Paper · 2012 · ISRN Ecology

Effects of Pythium Species and Time in Cold Storage on the Survival of Bareroot and Container-Grown Southern Pine Seedlings

D. Paul Jackson; Scott A. Enebak; David B. South

8
claims
17
verbatim quotes
5
citations
3
research areas
✓
Open access · cc-by

Abstract

Cold storing bareroot southern pine ( Pinus spp.) seedlings for greater than one week after lifting in the fall can lead to poor outplanting survival when compared to seedlings that are lifted and stored in winter. In contrast, container-grown seedlings typically do not experience adverse effects from storing for periods greater than one week. The practice of lifting bareroot seedlings can cause wounds to root systems, which could allow soil-borne pathogens such as Pythium species to be used as infection sites. Once seedlings are placed in storage, the cool, moist environment may be conducive for zoospore activity, leading to root disease and outplanting failure. Bareroot and container-grown longleaf pine ( Pinus palustris ), loblolly pine ( Pinus taeda ), and slash pine ( Pinus elliottii ) and container-grown shortleaf pine ( Pinus echinata ) were inoculated with either Pythium dimorphum or Pythium irregulare , cold-stored for 3, 4, 6, or 12 weeks, and outplanted. Both Pythium species reduced survival of bareroot longleaf pine but not bareroot slash pine. Length of storage decreased survival for both seedling stock types. Pythium species did not affect the survival of container-grown seedlings. These results suggest that P. dimorphum and P. irregulare are more virulent to bareroot longleaf pine than the other pine species tested.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Pythium dimorphum reduced bareroot longleaf pine survival.

Taxon
longleaf pinePinus palustrise0
Material
bareroot longleaf pinee0
Treatment
Pythium dimorphume1
Interactor
Pythium dimorphumElongisporangium dimorphume1pathogen
Outcome
survivale0
Direction
reducede0

Not reportedComparator

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

Pinus palustris
Pinus palustris · TaxonChuck Bargeron, University of Georgia · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Both Pythium species reduced survival of bareroot longleaf pine but not bareroot slash pine.”

✓ located verbatim in the source · abstract, characters 980–1072 · show in text ↑
e1

“Pythium dimorphum or Pythium irregulare”

✓ located verbatim in the source · abstract, characters 884–923 · show in text ↑
e2

“longleaf pine ( Pinus palustris )”

✓ located verbatim in the source · abstract, characters 701–734 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Pythium irregulare reduced bareroot longleaf pine survival.

Taxon
longleaf pinePinus palustrise0
Material
bareroot longleaf pinee0
Treatment
Pythium irregularee1
Interactor
Pythium irregulareGlobisporangium irregularee1pathogen
Outcome
survivale0
Direction
reducede0

Not reportedComparator

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

Pinus palustris
Pinus palustris · TaxonChuck Bargeron, University of Georgia · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Both Pythium species reduced survival of bareroot longleaf pine but not bareroot slash pine.”

✓ located verbatim in the source · abstract, characters 980–1072 · show in text ↑
e1

“Pythium dimorphum or Pythium irregulare”

✓ located verbatim in the source · abstract, characters 884–923 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pythium dimorphum did not reduce bareroot slash pine survival.

Taxon
slash pinePinus elliottiie0
Treatment
Pythium dimorphume1
Interactor
Pythium dimorphumElongisporangium dimorphume1pathogen
Outcome
survivale0
Direction
note0

Not reportedComparator

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

Pinus elliottii
Pinus elliottii · TaxonMason Brock ( Masebrock ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Both Pythium species reduced survival of bareroot longleaf pine but not bareroot slash pine.”

✓ located verbatim in the source · abstract, characters 980–1072 · show in text ↑
e1

“Pythium dimorphum or Pythium irregulare”

✓ located verbatim in the source · abstract, characters 884–923 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pythium irregulare did not reduce bareroot slash pine survival.

Taxon
slash pinePinus elliottiie0
Treatment
Pythium irregularee1
Interactor
Pythium irregulareGlobisporangium irregularee1pathogen
Outcome
survivale0
Direction
note0

Not reportedComparator

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

Pinus elliottii
Pinus elliottii · TaxonMason Brock ( Masebrock ) · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Both Pythium species reduced survival of bareroot longleaf pine but not bareroot slash pine.”

✓ located verbatim in the source · abstract, characters 980–1072 · show in text ↑
e1

“Pythium dimorphum or Pythium irregulare”

✓ located verbatim in the source · abstract, characters 884–923 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Longer storage decreased bareroot seedling survival.

Taxon
longleaf pinePinus palustrise1
Material
Bareroote1
Treatment
Length of storagee0
Outcome
survivale0
Direction
decreasede0

Not reportedComparator

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

Pinus palustris
Pinus palustris · TaxonChuck Bargeron, University of Georgia · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Length of storage decreased survival for both seedling stock types.”

✓ located verbatim in the source · abstract, characters 1073–1140 · show in text ↑
e1

“Bareroot and container-grown longleaf pine ( Pinus palustris ), loblolly pine ( Pinus taeda ), and slash pine ( Pinus elliottii ) and container-grown shortleaf pine ( Pinus echinata )”

✓ located verbatim in the source · abstract, characters 672–855 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Longer storage decreased container-grown seedling survival.

Taxon
longleaf pinePinus palustrise1
Material
container-growne1
Treatment
Length of storagee0
Outcome
survivale0
Direction
decreasede0

Not reportedComparator

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

Pinus palustris
Pinus palustris · TaxonChuck Bargeron, University of Georgia · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Length of storage decreased survival for both seedling stock types.”

✓ located verbatim in the source · abstract, characters 1073–1140 · show in text ↑
e1

“Bareroot and container-grown longleaf pine ( Pinus palustris ), loblolly pine ( Pinus taeda ), and slash pine ( Pinus elliottii ) and container-grown shortleaf pine ( Pinus echinata )”

✓ located verbatim in the source · abstract, characters 672–855 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Pythium did not affect container-grown pine seedling survival.

Taxon
Southern Pine Seedlingst0
Treatment
Pythium speciese0
Interactor
Pythium speciesPythiume0pathogen
Outcome
survival of container-grown seedlingse0
Direction
did not affecte0

Not reportedComparator

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

Pythium
Pythium · Interactor · picture of the genus (one of its species)Doc. RNDr. Josef Reischig, CSc. · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Pythium species did not affect the survival of container-grown seedlings.”

✓ located verbatim in the source · abstract, characters 1141–1214 · show in text ↑
e1

“Pythium dimorphum or Pythium irregulare”

✓ located verbatim in the source · abstract, characters 884–923 · show in text ↑
t0

“Southern Pine Seedlings”

✓ located verbatim in the source · title, characters 100–123 · show in text ↑
Observationauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Both Pythium species were interpreted as more virulent to bareroot longleaf pine.

Taxon
longleaf pinePinus palustrise0
Interactor
P. dimorphumElongisporangium dimorphume0pathogen
Second interactor
P. irregulareGlobisporangium irregularee0pathogen
Outcome
virulente0
Direction
moree0
Comparator
other pine species testede0

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

Pinus palustris
Pinus palustris · TaxonChuck Bargeron, University of Georgia · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“P. dimorphum and P. irregulare are more virulent to bareroot longleaf pine than the other pine species tested.”

✓ located verbatim in the source · abstract, characters 1242–1352 · show in text ↑

Globisporangium irregulare · survival · Pinus elliottii (slash pine)Results differ

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
See all 2 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.