Abstract
Prior exposure to freezing can increase the subsequent freezing tolerance of plants and reduce the severity of injury. However, it is unknown how freezing memory influences plant productivity. We investigated the effects of repeated freezing events over multiple seasons on the biomass of Bromus inermis, Lolium perenne, Festuca rubra, Plantago lanceolata, and Poa pratensis. The plants were exposed to different combinations of freezing in the early spring, late spring, or fall (2017), as well as the following spring (2018); control plants were frozen only once, along with all of the other treatments, during the spring of 2018. Bromus inermis that experienced every freeze, and the plants frozen in both the early and late spring, had higher biomass than the controls. Similarly, Poa pratensis plants frozen in both the early and late spring had higher biomass than the controls. In contrast, Festuca rubra plants frozen in early spring and fall had lower root biomass than the control plants, and Lolium perenne plants that experienced every freeze had lower root biomass than the controls. Variation among species in repeated freezing responses could have important consequences for the relative abundances of herbaceous species in northern temperate regions.
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Claims 5
Claim · model-written summary
Bromus inermis frozen every time had higher biomass than controls.
- Taxon
- Bromus inermis
Bromus inermise0 - Treatment
- every freezee0
- Outcome
- biomasse0
- Direction
- highere0
- Comparator
- the controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bromus inermis that experienced every freeze, and the plants frozen in both the early and late spring, had higher biomass than the controls”
Claim · model-written summary
Bromus inermis frozen in early and late spring had higher biomass than controls.
- Taxon
- Bromus inermisBromus inermise0
- Treatment
- frozen in both the early and late springe0
- Outcome
- biomasse0
- Direction
- highere0
- Comparator
- the controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bromus inermis that experienced every freeze, and the plants frozen in both the early and late spring, had higher biomass than the controls”
Claim · model-written summary
Poa pratensis frozen in early and late spring had higher biomass than controls.
- Taxon
- Poa pratensis
.jpg?width=60)
Poa pratensise0 - Treatment
- frozen in both the early and late springe0
- Outcome
- biomasse0
- Direction
- highere0
- Comparator
- the controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Poa pratensis plants frozen in both the early and late spring had higher biomass than the controls”
Claim · model-written summary
Festuca rubra frozen in early spring and fall had lower root biomass than controls.
- Taxon
- Festuca rubra
Festuca rubrae0 - Treatment
- frozen in early spring and falle0
- Outcome
- root biomasse0
- Direction
- lowere0
- Comparator
- the control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Festuca rubra plants frozen in early spring and fall had lower root biomass than the control plants”
Claim · model-written summary
Lolium perenne frozen every time had lower root biomass than controls.
- Taxon
- Lolium perenne
Lolium perennee0 - Treatment
- every freezee0
- Outcome
- root biomasse0
- Direction
- lowere0
- Comparator
- the controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that experienced every freeze had lower root biomass than the controls”
The same questions in other papers
cold · growth · Lolium perenne (perennial ryegrass)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
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1 paper more in this group
See all 5 papers →cold · growth · Bromus inermis (smooth brome grass)Results agree
1 paper in the same direction as this paper
- positive
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.